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rocksdb/db/db_test2.cc
Yu Zhang c6c683a0ca Remove the default force behavior for EnableFileDeletion API (#12001) 
Summary:
Disabling file deletion can be critical for operations like making a backup, recovery from manifest IO error (for now). Ideally as long as there is one caller requesting file deletion disabled, it should be kept disabled until all callers agree to re-enable it. So this PR removes the default forcing behavior for the `EnableFileDeletion` API, and users need to explicitly pass the argument if they insisted on doing so knowing the consequence of what can be potentially disrupted.

This PR removes the API's default argument value so it will cause breakage for all users that are relying on the default value, regardless of whether the forcing behavior is critical for them.  When fixing this breakage, it's good to check if the forcing behavior is indeed needed and potential disruption is OK.

This PR also makes unit test that do not need force behavior to do a regular enable file deletion.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/12001

Reviewed By: ajkr

Differential Revision: D51214683

Pulled By: jowlyzhang

fbshipit-source-id: ca7b1ebf15c09eed00f954da2f75c00d2c6a97e4
2023-11-10 14:35:54 -08:00

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// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
// This source code is licensed under both the GPLv2 (found in the
// COPYING file in the root directory) and Apache 2.0 License
// (found in the LICENSE.Apache file in the root directory).
//
// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file. See the AUTHORS file for names of contributors.
#include <atomic>
#include <cstdlib>
#include <functional>
#include <memory>
#include "db/db_test_util.h"
#include "db/read_callback.h"
#include "db/version_edit.h"
#include "options/options_helper.h"
#include "port/port.h"
#include "port/stack_trace.h"
#include "rocksdb/experimental.h"
#include "rocksdb/iostats_context.h"
#include "rocksdb/persistent_cache.h"
#include "rocksdb/trace_record.h"
#include "rocksdb/trace_record_result.h"
#include "rocksdb/utilities/replayer.h"
#include "rocksdb/wal_filter.h"
#include "test_util/testutil.h"
#include "util/random.h"
#include "utilities/fault_injection_env.h"
namespace ROCKSDB_NAMESPACE {
class DBTest2 : public DBTestBase {
public:
DBTest2() : DBTestBase("db_test2", /*env_do_fsync=*/true) {}
std::vector<FileMetaData*> GetLevelFileMetadatas(int level, int cf = 0) {
VersionSet* const versions = dbfull()->GetVersionSet();
assert(versions);
ColumnFamilyData* const cfd =
versions->GetColumnFamilySet()->GetColumnFamily(cf);
assert(cfd);
Version* const current = cfd->current();
assert(current);
VersionStorageInfo* const storage_info = current->storage_info();
assert(storage_info);
return storage_info->LevelFiles(level);
}
};
TEST_F(DBTest2, OpenForReadOnly) {
DB* db_ptr = nullptr;
std::string dbname = test::PerThreadDBPath("db_readonly");
Options options = CurrentOptions();
options.create_if_missing = true;
// OpenForReadOnly should fail but will create <dbname> in the file system
ASSERT_NOK(DB::OpenForReadOnly(options, dbname, &db_ptr));
// Since <dbname> is created, we should be able to delete the dir
// We first get the list files under <dbname>
// There should not be any subdirectories -- this is not checked here
std::vector<std::string> files;
ASSERT_OK(env_->GetChildren(dbname, &files));
for (auto& f : files) {
ASSERT_OK(env_->DeleteFile(dbname + "/" + f));
}
// <dbname> should be empty now and we should be able to delete it
ASSERT_OK(env_->DeleteDir(dbname));
options.create_if_missing = false;
// OpenForReadOnly should fail since <dbname> was successfully deleted
ASSERT_NOK(DB::OpenForReadOnly(options, dbname, &db_ptr));
// With create_if_missing false, there should not be a dir in the file system
ASSERT_NOK(env_->FileExists(dbname));
}
TEST_F(DBTest2, OpenForReadOnlyWithColumnFamilies) {
DB* db_ptr = nullptr;
std::string dbname = test::PerThreadDBPath("db_readonly");
Options options = CurrentOptions();
options.create_if_missing = true;
ColumnFamilyOptions cf_options(options);
std::vector<ColumnFamilyDescriptor> column_families;
column_families.push_back(
ColumnFamilyDescriptor(kDefaultColumnFamilyName, cf_options));
column_families.push_back(ColumnFamilyDescriptor("goku", cf_options));
std::vector<ColumnFamilyHandle*> handles;
// OpenForReadOnly should fail but will create <dbname> in the file system
ASSERT_NOK(
DB::OpenForReadOnly(options, dbname, column_families, &handles, &db_ptr));
// Since <dbname> is created, we should be able to delete the dir
// We first get the list files under <dbname>
// There should not be any subdirectories -- this is not checked here
std::vector<std::string> files;
ASSERT_OK(env_->GetChildren(dbname, &files));
for (auto& f : files) {
ASSERT_OK(env_->DeleteFile(dbname + "/" + f));
}
// <dbname> should be empty now and we should be able to delete it
ASSERT_OK(env_->DeleteDir(dbname));
options.create_if_missing = false;
// OpenForReadOnly should fail since <dbname> was successfully deleted
ASSERT_NOK(
DB::OpenForReadOnly(options, dbname, column_families, &handles, &db_ptr));
// With create_if_missing false, there should not be a dir in the file system
ASSERT_NOK(env_->FileExists(dbname));
}
class PartitionedIndexTestListener : public EventListener {
public:
void OnFlushCompleted(DB* /*db*/, const FlushJobInfo& info) override {
ASSERT_GT(info.table_properties.index_partitions, 1);
ASSERT_EQ(info.table_properties.index_key_is_user_key, 0);
}
};
TEST_F(DBTest2, PartitionedIndexUserToInternalKey) {
const int kValueSize = 10500;
const int kNumEntriesPerFile = 1000;
const int kNumFiles = 3;
const int kNumDistinctKeys = 30;
BlockBasedTableOptions table_options;
Options options = CurrentOptions();
options.disable_auto_compactions = true;
table_options.index_type = BlockBasedTableOptions::kTwoLevelIndexSearch;
PartitionedIndexTestListener* listener = new PartitionedIndexTestListener();
options.table_factory.reset(NewBlockBasedTableFactory(table_options));
options.listeners.emplace_back(listener);
std::vector<const Snapshot*> snapshots;
Reopen(options);
Random rnd(301);
for (int i = 0; i < kNumFiles; i++) {
for (int j = 0; j < kNumEntriesPerFile; j++) {
int key_id = (i * kNumEntriesPerFile + j) % kNumDistinctKeys;
std::string value = rnd.RandomString(kValueSize);
ASSERT_OK(Put("keykey_" + std::to_string(key_id), value));
snapshots.push_back(db_->GetSnapshot());
}
ASSERT_OK(Flush());
}
for (auto s : snapshots) {
db_->ReleaseSnapshot(s);
}
}
class PrefixFullBloomWithReverseComparator
: public DBTestBase,
public ::testing::WithParamInterface<bool> {
public:
PrefixFullBloomWithReverseComparator()
: DBTestBase("prefix_bloom_reverse", /*env_do_fsync=*/true) {}
void SetUp() override { if_cache_filter_ = GetParam(); }
bool if_cache_filter_;
};
TEST_P(PrefixFullBloomWithReverseComparator,
PrefixFullBloomWithReverseComparator) {
Options options = last_options_;
options.comparator = ReverseBytewiseComparator();
options.prefix_extractor.reset(NewCappedPrefixTransform(3));
options.statistics = ROCKSDB_NAMESPACE::CreateDBStatistics();
BlockBasedTableOptions bbto;
if (if_cache_filter_) {
bbto.no_block_cache = false;
bbto.cache_index_and_filter_blocks = true;
bbto.block_cache = NewLRUCache(1);
}
bbto.filter_policy.reset(NewBloomFilterPolicy(10, false));
bbto.whole_key_filtering = false;
options.table_factory.reset(NewBlockBasedTableFactory(bbto));
DestroyAndReopen(options);
ASSERT_OK(dbfull()->Put(WriteOptions(), "bar123", "foo"));
ASSERT_OK(dbfull()->Put(WriteOptions(), "bar234", "foo2"));
ASSERT_OK(dbfull()->Put(WriteOptions(), "foo123", "foo3"));
ASSERT_OK(dbfull()->Flush(FlushOptions()));
if (bbto.block_cache) {
bbto.block_cache->EraseUnRefEntries();
}
std::unique_ptr<Iterator> iter(db_->NewIterator(ReadOptions()));
iter->Seek("bar345");
ASSERT_OK(iter->status());
ASSERT_TRUE(iter->Valid());
ASSERT_EQ("bar234", iter->key().ToString());
ASSERT_EQ("foo2", iter->value().ToString());
iter->Next();
ASSERT_TRUE(iter->Valid());
ASSERT_EQ("bar123", iter->key().ToString());
ASSERT_EQ("foo", iter->value().ToString());
iter->Seek("foo234");
ASSERT_OK(iter->status());
ASSERT_TRUE(iter->Valid());
ASSERT_EQ("foo123", iter->key().ToString());
ASSERT_EQ("foo3", iter->value().ToString());
iter->Seek("bar");
ASSERT_OK(iter->status());
ASSERT_TRUE(!iter->Valid());
}
INSTANTIATE_TEST_CASE_P(PrefixFullBloomWithReverseComparator,
PrefixFullBloomWithReverseComparator, testing::Bool());
TEST_F(DBTest2, IteratorPropertyVersionNumber) {
ASSERT_OK(Put("", ""));
Iterator* iter1 = db_->NewIterator(ReadOptions());
ASSERT_OK(iter1->status());
std::string prop_value;
ASSERT_OK(
iter1->GetProperty("rocksdb.iterator.super-version-number", &prop_value));
uint64_t version_number1 =
static_cast<uint64_t>(std::atoi(prop_value.c_str()));
ASSERT_OK(Put("", ""));
ASSERT_OK(Flush());
Iterator* iter2 = db_->NewIterator(ReadOptions());
ASSERT_OK(iter2->status());
ASSERT_OK(
iter2->GetProperty("rocksdb.iterator.super-version-number", &prop_value));
uint64_t version_number2 =
static_cast<uint64_t>(std::atoi(prop_value.c_str()));
ASSERT_GT(version_number2, version_number1);
ASSERT_OK(Put("", ""));
Iterator* iter3 = db_->NewIterator(ReadOptions());
ASSERT_OK(iter3->status());
ASSERT_OK(
iter3->GetProperty("rocksdb.iterator.super-version-number", &prop_value));
uint64_t version_number3 =
static_cast<uint64_t>(std::atoi(prop_value.c_str()));
ASSERT_EQ(version_number2, version_number3);
iter1->SeekToFirst();
ASSERT_OK(
iter1->GetProperty("rocksdb.iterator.super-version-number", &prop_value));
uint64_t version_number1_new =
static_cast<uint64_t>(std::atoi(prop_value.c_str()));
ASSERT_EQ(version_number1, version_number1_new);
delete iter1;
delete iter2;
delete iter3;
}
TEST_F(DBTest2, CacheIndexAndFilterWithDBRestart) {
Options options = CurrentOptions();
options.create_if_missing = true;
options.statistics = ROCKSDB_NAMESPACE::CreateDBStatistics();
BlockBasedTableOptions table_options;
table_options.cache_index_and_filter_blocks = true;
table_options.filter_policy.reset(NewBloomFilterPolicy(20));
options.table_factory.reset(NewBlockBasedTableFactory(table_options));
CreateAndReopenWithCF({"pikachu"}, options);
ASSERT_OK(Put(1, "a", "begin"));
ASSERT_OK(Put(1, "z", "end"));
ASSERT_OK(Flush(1));
ASSERT_OK(TryReopenWithColumnFamilies({"default", "pikachu"}, options));
std::string value;
value = Get(1, "a");
}
TEST_F(DBTest2, MaxSuccessiveMergesChangeWithDBRecovery) {
Options options = CurrentOptions();
options.create_if_missing = true;
options.statistics = ROCKSDB_NAMESPACE::CreateDBStatistics();
options.max_successive_merges = 3;
options.merge_operator = MergeOperators::CreatePutOperator();
options.disable_auto_compactions = true;
DestroyAndReopen(options);
ASSERT_OK(Put("poi", "Finch"));
ASSERT_OK(db_->Merge(WriteOptions(), "poi", "Reese"));
ASSERT_OK(db_->Merge(WriteOptions(), "poi", "Shaw"));
ASSERT_OK(db_->Merge(WriteOptions(), "poi", "Root"));
options.max_successive_merges = 2;
Reopen(options);
}
class DBTestSharedWriteBufferAcrossCFs
: public DBTestBase,
public testing::WithParamInterface<std::tuple<bool, bool>> {
public:
DBTestSharedWriteBufferAcrossCFs()
: DBTestBase("db_test_shared_write_buffer", /*env_do_fsync=*/true) {}
void SetUp() override {
use_old_interface_ = std::get<0>(GetParam());
cost_cache_ = std::get<1>(GetParam());
}
bool use_old_interface_;
bool cost_cache_;
};
TEST_P(DBTestSharedWriteBufferAcrossCFs, SharedWriteBufferAcrossCFs) {
Options options = CurrentOptions();
options.arena_block_size = 4096;
auto flush_listener = std::make_shared<FlushCounterListener>();
options.listeners.push_back(flush_listener);
// Don't trip the listener at shutdown.
options.avoid_flush_during_shutdown = true;
// Avoid undeterministic value by malloc_usable_size();
// Force arena block size to 1
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
"Arena::Arena:0", [&](void* arg) {
size_t* block_size = static_cast<size_t*>(arg);
*block_size = 1;
});
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
"Arena::AllocateNewBlock:0", [&](void* arg) {
std::pair<size_t*, size_t*>* pair =
static_cast<std::pair<size_t*, size_t*>*>(arg);
*std::get<0>(*pair) = *std::get<1>(*pair);
});
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
// The total soft write buffer size is about 105000
std::shared_ptr<Cache> cache = NewLRUCache(4 * 1024 * 1024, 2);
ASSERT_LT(cache->GetUsage(), 256 * 1024);
if (use_old_interface_) {
options.db_write_buffer_size = 120000; // this is the real limit
} else if (!cost_cache_) {
options.write_buffer_manager.reset(new WriteBufferManager(114285));
} else {
options.write_buffer_manager.reset(new WriteBufferManager(114285, cache));
}
options.write_buffer_size = 500000; // this is never hit
CreateAndReopenWithCF({"pikachu", "dobrynia", "nikitich"}, options);
WriteOptions wo;
wo.disableWAL = true;
std::function<void()> wait_flush = [&]() {
ASSERT_OK(dbfull()->TEST_WaitForFlushMemTable(handles_[0]));
ASSERT_OK(dbfull()->TEST_WaitForFlushMemTable(handles_[1]));
ASSERT_OK(dbfull()->TEST_WaitForFlushMemTable(handles_[2]));
ASSERT_OK(dbfull()->TEST_WaitForFlushMemTable(handles_[3]));
// Ensure background work is fully finished including listener callbacks
// before accessing listener state.
ASSERT_OK(dbfull()->TEST_WaitForBackgroundWork());
};
// Create some data and flush "default" and "nikitich" so that they
// are newer CFs created.
flush_listener->expected_flush_reason = FlushReason::kManualFlush;
ASSERT_OK(Put(3, Key(1), DummyString(1), wo));
ASSERT_OK(Flush(3));
ASSERT_OK(Put(3, Key(1), DummyString(1), wo));
ASSERT_OK(Put(0, Key(1), DummyString(1), wo));
ASSERT_OK(Flush(0));
ASSERT_EQ(GetNumberOfSstFilesForColumnFamily(db_, "default"),
static_cast<uint64_t>(1));
ASSERT_EQ(GetNumberOfSstFilesForColumnFamily(db_, "nikitich"),
static_cast<uint64_t>(1));
flush_listener->expected_flush_reason = FlushReason::kWriteBufferManager;
ASSERT_OK(Put(3, Key(1), DummyString(30000), wo));
if (cost_cache_) {
ASSERT_GE(cache->GetUsage(), 256 * 1024);
ASSERT_LE(cache->GetUsage(), 2 * 256 * 1024);
}
wait_flush();
ASSERT_OK(Put(0, Key(1), DummyString(60000), wo));
if (cost_cache_) {
ASSERT_GE(cache->GetUsage(), 256 * 1024);
ASSERT_LE(cache->GetUsage(), 2 * 256 * 1024);
}
wait_flush();
ASSERT_OK(Put(2, Key(1), DummyString(1), wo));
// No flush should trigger
wait_flush();
{
ASSERT_EQ(GetNumberOfSstFilesForColumnFamily(db_, "default"),
static_cast<uint64_t>(1));
ASSERT_EQ(GetNumberOfSstFilesForColumnFamily(db_, "pikachu"),
static_cast<uint64_t>(0));
ASSERT_EQ(GetNumberOfSstFilesForColumnFamily(db_, "dobrynia"),
static_cast<uint64_t>(0));
ASSERT_EQ(GetNumberOfSstFilesForColumnFamily(db_, "nikitich"),
static_cast<uint64_t>(1));
}
// Trigger a flush. Flushing "nikitich".
ASSERT_OK(Put(3, Key(2), DummyString(30000), wo));
wait_flush();
ASSERT_OK(Put(0, Key(1), DummyString(1), wo));
wait_flush();
{
ASSERT_EQ(GetNumberOfSstFilesForColumnFamily(db_, "default"),
static_cast<uint64_t>(1));
ASSERT_EQ(GetNumberOfSstFilesForColumnFamily(db_, "pikachu"),
static_cast<uint64_t>(0));
ASSERT_EQ(GetNumberOfSstFilesForColumnFamily(db_, "dobrynia"),
static_cast<uint64_t>(0));
ASSERT_EQ(GetNumberOfSstFilesForColumnFamily(db_, "nikitich"),
static_cast<uint64_t>(2));
}
// Without hitting the threshold, no flush should trigger.
ASSERT_OK(Put(2, Key(1), DummyString(30000), wo));
wait_flush();
ASSERT_OK(Put(2, Key(1), DummyString(1), wo));
wait_flush();
ASSERT_OK(Put(2, Key(1), DummyString(1), wo));
wait_flush();
{
ASSERT_EQ(GetNumberOfSstFilesForColumnFamily(db_, "default"),
static_cast<uint64_t>(1));
ASSERT_EQ(GetNumberOfSstFilesForColumnFamily(db_, "pikachu"),
static_cast<uint64_t>(0));
ASSERT_EQ(GetNumberOfSstFilesForColumnFamily(db_, "dobrynia"),
static_cast<uint64_t>(0));
ASSERT_EQ(GetNumberOfSstFilesForColumnFamily(db_, "nikitich"),
static_cast<uint64_t>(2));
}
// Hit the write buffer limit again. "default"
// will have been flushed.
ASSERT_OK(Put(2, Key(2), DummyString(10000), wo));
wait_flush();
ASSERT_OK(Put(3, Key(1), DummyString(1), wo));
wait_flush();
ASSERT_OK(Put(0, Key(1), DummyString(1), wo));
wait_flush();
ASSERT_OK(Put(0, Key(1), DummyString(1), wo));
wait_flush();
ASSERT_OK(Put(0, Key(1), DummyString(1), wo));
wait_flush();
{
ASSERT_EQ(GetNumberOfSstFilesForColumnFamily(db_, "default"),
static_cast<uint64_t>(2));
ASSERT_EQ(GetNumberOfSstFilesForColumnFamily(db_, "pikachu"),
static_cast<uint64_t>(0));
ASSERT_EQ(GetNumberOfSstFilesForColumnFamily(db_, "dobrynia"),
static_cast<uint64_t>(0));
ASSERT_EQ(GetNumberOfSstFilesForColumnFamily(db_, "nikitich"),
static_cast<uint64_t>(2));
}
// Trigger another flush. This time "dobrynia". "pikachu" should not
// be flushed, althrough it was never flushed.
ASSERT_OK(Put(1, Key(1), DummyString(1), wo));
wait_flush();
ASSERT_OK(Put(2, Key(1), DummyString(80000), wo));
wait_flush();
ASSERT_OK(Put(1, Key(1), DummyString(1), wo));
wait_flush();
ASSERT_OK(Put(2, Key(1), DummyString(1), wo));
wait_flush();
{
ASSERT_EQ(GetNumberOfSstFilesForColumnFamily(db_, "default"),
static_cast<uint64_t>(2));
ASSERT_EQ(GetNumberOfSstFilesForColumnFamily(db_, "pikachu"),
static_cast<uint64_t>(0));
ASSERT_EQ(GetNumberOfSstFilesForColumnFamily(db_, "dobrynia"),
static_cast<uint64_t>(1));
ASSERT_EQ(GetNumberOfSstFilesForColumnFamily(db_, "nikitich"),
static_cast<uint64_t>(2));
}
if (cost_cache_) {
ASSERT_GE(cache->GetUsage(), 256 * 1024);
Close();
options.write_buffer_manager.reset();
last_options_.write_buffer_manager.reset();
ASSERT_LT(cache->GetUsage(), 256 * 1024);
}
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->DisableProcessing();
}
INSTANTIATE_TEST_CASE_P(DBTestSharedWriteBufferAcrossCFs,
DBTestSharedWriteBufferAcrossCFs,
::testing::Values(std::make_tuple(true, false),
std::make_tuple(false, false),
std::make_tuple(false, true)));
TEST_F(DBTest2, SharedWriteBufferLimitAcrossDB) {
std::string dbname2 = test::PerThreadDBPath("db_shared_wb_db2");
Options options = CurrentOptions();
options.arena_block_size = 4096;
auto flush_listener = std::make_shared<FlushCounterListener>();
options.listeners.push_back(flush_listener);
// Don't trip the listener at shutdown.
options.avoid_flush_during_shutdown = true;
// Avoid undeterministic value by malloc_usable_size();
// Force arena block size to 1
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
"Arena::Arena:0", [&](void* arg) {
size_t* block_size = static_cast<size_t*>(arg);
*block_size = 1;
});
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
"Arena::AllocateNewBlock:0", [&](void* arg) {
std::pair<size_t*, size_t*>* pair =
static_cast<std::pair<size_t*, size_t*>*>(arg);
*std::get<0>(*pair) = *std::get<1>(*pair);
});
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
options.write_buffer_size = 500000; // this is never hit
// Use a write buffer total size so that the soft limit is about
// 105000.
options.write_buffer_manager.reset(new WriteBufferManager(120000));
CreateAndReopenWithCF({"cf1", "cf2"}, options);
ASSERT_OK(DestroyDB(dbname2, options));
DB* db2 = nullptr;
ASSERT_OK(DB::Open(options, dbname2, &db2));
WriteOptions wo;
wo.disableWAL = true;
std::function<void()> wait_flush = [&]() {
ASSERT_OK(dbfull()->TEST_WaitForFlushMemTable(handles_[0]));
ASSERT_OK(dbfull()->TEST_WaitForFlushMemTable(handles_[1]));
ASSERT_OK(dbfull()->TEST_WaitForFlushMemTable(handles_[2]));
ASSERT_OK(static_cast<DBImpl*>(db2)->TEST_WaitForFlushMemTable());
// Ensure background work is fully finished including listener callbacks
// before accessing listener state.
ASSERT_OK(dbfull()->TEST_WaitForBackgroundWork());
ASSERT_OK(
static_cast_with_check<DBImpl>(db2)->TEST_WaitForBackgroundWork());
};
// Trigger a flush on cf2
flush_listener->expected_flush_reason = FlushReason::kWriteBufferManager;
ASSERT_OK(Put(2, Key(1), DummyString(70000), wo));
wait_flush();
ASSERT_OK(Put(0, Key(1), DummyString(20000), wo));
wait_flush();
// Insert to DB2
ASSERT_OK(db2->Put(wo, Key(2), DummyString(20000)));
wait_flush();
ASSERT_OK(Put(2, Key(1), DummyString(1), wo));
wait_flush();
ASSERT_OK(static_cast<DBImpl*>(db2)->TEST_WaitForFlushMemTable());
{
ASSERT_EQ(GetNumberOfSstFilesForColumnFamily(db_, "default") +
GetNumberOfSstFilesForColumnFamily(db_, "cf1") +
GetNumberOfSstFilesForColumnFamily(db_, "cf2"),
static_cast<uint64_t>(1));
ASSERT_EQ(GetNumberOfSstFilesForColumnFamily(db2, "default"),
static_cast<uint64_t>(0));
}
// Triggering to flush another CF in DB1
ASSERT_OK(db2->Put(wo, Key(2), DummyString(70000)));
wait_flush();
ASSERT_OK(Put(2, Key(1), DummyString(1), wo));
wait_flush();
{
ASSERT_EQ(GetNumberOfSstFilesForColumnFamily(db_, "default"),
static_cast<uint64_t>(1));
ASSERT_EQ(GetNumberOfSstFilesForColumnFamily(db_, "cf1"),
static_cast<uint64_t>(0));
ASSERT_EQ(GetNumberOfSstFilesForColumnFamily(db_, "cf2"),
static_cast<uint64_t>(1));
ASSERT_EQ(GetNumberOfSstFilesForColumnFamily(db2, "default"),
static_cast<uint64_t>(0));
}
// Triggering flush in DB2.
ASSERT_OK(db2->Put(wo, Key(3), DummyString(40000)));
wait_flush();
ASSERT_OK(db2->Put(wo, Key(1), DummyString(1)));
wait_flush();
ASSERT_OK(static_cast<DBImpl*>(db2)->TEST_WaitForFlushMemTable());
{
ASSERT_EQ(GetNumberOfSstFilesForColumnFamily(db_, "default"),
static_cast<uint64_t>(1));
ASSERT_EQ(GetNumberOfSstFilesForColumnFamily(db_, "cf1"),
static_cast<uint64_t>(0));
ASSERT_EQ(GetNumberOfSstFilesForColumnFamily(db_, "cf2"),
static_cast<uint64_t>(1));
ASSERT_EQ(GetNumberOfSstFilesForColumnFamily(db2, "default"),
static_cast<uint64_t>(1));
}
delete db2;
ASSERT_OK(DestroyDB(dbname2, options));
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->DisableProcessing();
}
TEST_F(DBTest2, TestWriteBufferNoLimitWithCache) {
Options options = CurrentOptions();
options.arena_block_size = 4096;
std::shared_ptr<Cache> cache = NewLRUCache(LRUCacheOptions(
10000000 /* capacity */, 1 /* num_shard_bits */,
false /* strict_capacity_limit */, 0.0 /* high_pri_pool_ratio */,
nullptr /* memory_allocator */, kDefaultToAdaptiveMutex,
kDontChargeCacheMetadata));
options.write_buffer_size = 50000; // this is never hit
// Use a write buffer total size so that the soft limit is about
// 105000.
options.write_buffer_manager.reset(new WriteBufferManager(0, cache));
Reopen(options);
ASSERT_OK(Put("foo", "bar"));
// One dummy entry is 256KB.
ASSERT_GT(cache->GetUsage(), 128000);
}
namespace {
void ValidateKeyExistence(DB* db, const std::vector<Slice>& keys_must_exist,
const std::vector<Slice>& keys_must_not_exist) {
// Ensure that expected keys exist
std::vector<std::string> values;
if (keys_must_exist.size() > 0) {
std::vector<Status> status_list =
db->MultiGet(ReadOptions(), keys_must_exist, &values);
for (size_t i = 0; i < keys_must_exist.size(); i++) {
ASSERT_OK(status_list[i]);
}
}
// Ensure that given keys don't exist
if (keys_must_not_exist.size() > 0) {
std::vector<Status> status_list =
db->MultiGet(ReadOptions(), keys_must_not_exist, &values);
for (size_t i = 0; i < keys_must_not_exist.size(); i++) {
ASSERT_TRUE(status_list[i].IsNotFound());
}
}
}
} // anonymous namespace
TEST_F(DBTest2, WalFilterTest) {
class TestWalFilter : public WalFilter {
private:
// Processing option that is requested to be applied at the given index
WalFilter::WalProcessingOption wal_processing_option_;
// Index at which to apply wal_processing_option_
// At other indexes default wal_processing_option::kContinueProcessing is
// returned.
size_t apply_option_at_record_index_;
// Current record index, incremented with each record encountered.
size_t current_record_index_;
public:
TestWalFilter(WalFilter::WalProcessingOption wal_processing_option,
size_t apply_option_for_record_index)
: wal_processing_option_(wal_processing_option),
apply_option_at_record_index_(apply_option_for_record_index),
current_record_index_(0) {}
WalProcessingOption LogRecord(const WriteBatch& /*batch*/,
WriteBatch* /*new_batch*/,
bool* /*batch_changed*/) const override {
WalFilter::WalProcessingOption option_to_return;
if (current_record_index_ == apply_option_at_record_index_) {
option_to_return = wal_processing_option_;
} else {
option_to_return = WalProcessingOption::kContinueProcessing;
}
// Filter is passed as a const object for RocksDB to not modify the
// object, however we modify it for our own purpose here and hence
// cast the constness away.
(const_cast<TestWalFilter*>(this)->current_record_index_)++;
return option_to_return;
}
const char* Name() const override { return "TestWalFilter"; }
};
// Create 3 batches with two keys each
std::vector<std::vector<std::string>> batch_keys(3);
batch_keys[0].push_back("key1");
batch_keys[0].push_back("key2");
batch_keys[1].push_back("key3");
batch_keys[1].push_back("key4");
batch_keys[2].push_back("key5");
batch_keys[2].push_back("key6");
// Test with all WAL processing options
for (int option = 0;
option < static_cast<int>(
WalFilter::WalProcessingOption::kWalProcessingOptionMax);
option++) {
Options options = OptionsForLogIterTest();
DestroyAndReopen(options);
CreateAndReopenWithCF({"pikachu"}, options);
// Write given keys in given batches
for (size_t i = 0; i < batch_keys.size(); i++) {
WriteBatch batch;
for (size_t j = 0; j < batch_keys[i].size(); j++) {
ASSERT_OK(batch.Put(handles_[0], batch_keys[i][j], DummyString(1024)));
}
ASSERT_OK(dbfull()->Write(WriteOptions(), &batch));
}
WalFilter::WalProcessingOption wal_processing_option =
static_cast<WalFilter::WalProcessingOption>(option);
// Create a test filter that would apply wal_processing_option at the first
// record
size_t apply_option_for_record_index = 1;
TestWalFilter test_wal_filter(wal_processing_option,
apply_option_for_record_index);
// Reopen database with option to use WAL filter
options = OptionsForLogIterTest();
options.wal_filter = &test_wal_filter;
Status status =
TryReopenWithColumnFamilies({"default", "pikachu"}, options);
if (wal_processing_option ==
WalFilter::WalProcessingOption::kCorruptedRecord) {
ASSERT_NOK(status);
// In case of corruption we can turn off paranoid_checks to reopen
// databse
options.paranoid_checks = false;
ReopenWithColumnFamilies({"default", "pikachu"}, options);
} else {
ASSERT_OK(status);
}
// Compute which keys we expect to be found
// and which we expect not to be found after recovery.
std::vector<Slice> keys_must_exist;
std::vector<Slice> keys_must_not_exist;
switch (wal_processing_option) {
case WalFilter::WalProcessingOption::kCorruptedRecord:
case WalFilter::WalProcessingOption::kContinueProcessing: {
fprintf(stderr, "Testing with complete WAL processing\n");
// we expect all records to be processed
for (size_t i = 0; i < batch_keys.size(); i++) {
for (size_t j = 0; j < batch_keys[i].size(); j++) {
keys_must_exist.push_back(Slice(batch_keys[i][j]));
}
}
break;
}
case WalFilter::WalProcessingOption::kIgnoreCurrentRecord: {
fprintf(stderr,
"Testing with ignoring record %" ROCKSDB_PRIszt " only\n",
apply_option_for_record_index);
// We expect the record with apply_option_for_record_index to be not
// found.
for (size_t i = 0; i < batch_keys.size(); i++) {
for (size_t j = 0; j < batch_keys[i].size(); j++) {
if (i == apply_option_for_record_index) {
keys_must_not_exist.push_back(Slice(batch_keys[i][j]));
} else {
keys_must_exist.push_back(Slice(batch_keys[i][j]));
}
}
}
break;
}
case WalFilter::WalProcessingOption::kStopReplay: {
fprintf(stderr,
"Testing with stopping replay from record %" ROCKSDB_PRIszt
"\n",
apply_option_for_record_index);
// We expect records beyond apply_option_for_record_index to be not
// found.
for (size_t i = 0; i < batch_keys.size(); i++) {
for (size_t j = 0; j < batch_keys[i].size(); j++) {
if (i >= apply_option_for_record_index) {
keys_must_not_exist.push_back(Slice(batch_keys[i][j]));
} else {
keys_must_exist.push_back(Slice(batch_keys[i][j]));
}
}
}
break;
}
default:
FAIL(); // unhandled case
}
bool checked_after_reopen = false;
while (true) {
// Ensure that expected keys exists
// and not expected keys don't exist after recovery
ValidateKeyExistence(db_, keys_must_exist, keys_must_not_exist);
if (checked_after_reopen) {
break;
}
// reopen database again to make sure previous log(s) are not used
//(even if they were skipped)
// reopn database with option to use WAL filter
options = OptionsForLogIterTest();
ReopenWithColumnFamilies({"default", "pikachu"}, options);
checked_after_reopen = true;
}
}
}
TEST_F(DBTest2, WalFilterTestWithChangeBatch) {
class ChangeBatchHandler : public WriteBatch::Handler {
private:
// Batch to insert keys in
WriteBatch* new_write_batch_;
// Number of keys to add in the new batch
size_t num_keys_to_add_in_new_batch_;
// Number of keys added to new batch
size_t num_keys_added_;
public:
ChangeBatchHandler(WriteBatch* new_write_batch,
size_t num_keys_to_add_in_new_batch)
: new_write_batch_(new_write_batch),
num_keys_to_add_in_new_batch_(num_keys_to_add_in_new_batch),
num_keys_added_(0) {}
void Put(const Slice& key, const Slice& value) override {
if (num_keys_added_ < num_keys_to_add_in_new_batch_) {
ASSERT_OK(new_write_batch_->Put(key, value));
++num_keys_added_;
}
}
};
class TestWalFilterWithChangeBatch : public WalFilter {
private:
// Index at which to start changing records
size_t change_records_from_index_;
// Number of keys to add in the new batch
size_t num_keys_to_add_in_new_batch_;
// Current record index, incremented with each record encountered.
size_t current_record_index_;
public:
TestWalFilterWithChangeBatch(size_t change_records_from_index,
size_t num_keys_to_add_in_new_batch)
: change_records_from_index_(change_records_from_index),
num_keys_to_add_in_new_batch_(num_keys_to_add_in_new_batch),
current_record_index_(0) {}
WalProcessingOption LogRecord(const WriteBatch& batch,
WriteBatch* new_batch,
bool* batch_changed) const override {
if (current_record_index_ >= change_records_from_index_) {
ChangeBatchHandler handler(new_batch, num_keys_to_add_in_new_batch_);
Status s = batch.Iterate(&handler);
if (s.ok()) {
*batch_changed = true;
} else {
assert(false);
}
}
// Filter is passed as a const object for RocksDB to not modify the
// object, however we modify it for our own purpose here and hence
// cast the constness away.
(const_cast<TestWalFilterWithChangeBatch*>(this)
->current_record_index_)++;
return WalProcessingOption::kContinueProcessing;
}
const char* Name() const override { return "TestWalFilterWithChangeBatch"; }
};
std::vector<std::vector<std::string>> batch_keys(3);
batch_keys[0].push_back("key1");
batch_keys[0].push_back("key2");
batch_keys[1].push_back("key3");
batch_keys[1].push_back("key4");
batch_keys[2].push_back("key5");
batch_keys[2].push_back("key6");
Options options = OptionsForLogIterTest();
DestroyAndReopen(options);
CreateAndReopenWithCF({"pikachu"}, options);
// Write given keys in given batches
for (size_t i = 0; i < batch_keys.size(); i++) {
WriteBatch batch;
for (size_t j = 0; j < batch_keys[i].size(); j++) {
ASSERT_OK(batch.Put(handles_[0], batch_keys[i][j], DummyString(1024)));
}
ASSERT_OK(dbfull()->Write(WriteOptions(), &batch));
}
// Create a test filter that would apply wal_processing_option at the first
// record
size_t change_records_from_index = 1;
size_t num_keys_to_add_in_new_batch = 1;
TestWalFilterWithChangeBatch test_wal_filter_with_change_batch(
change_records_from_index, num_keys_to_add_in_new_batch);
// Reopen database with option to use WAL filter
options = OptionsForLogIterTest();
options.wal_filter = &test_wal_filter_with_change_batch;
ReopenWithColumnFamilies({"default", "pikachu"}, options);
// Ensure that all keys exist before change_records_from_index_
// And after that index only single key exists
// as our filter adds only single key for each batch
std::vector<Slice> keys_must_exist;
std::vector<Slice> keys_must_not_exist;
for (size_t i = 0; i < batch_keys.size(); i++) {
for (size_t j = 0; j < batch_keys[i].size(); j++) {
if (i >= change_records_from_index && j >= num_keys_to_add_in_new_batch) {
keys_must_not_exist.push_back(Slice(batch_keys[i][j]));
} else {
keys_must_exist.push_back(Slice(batch_keys[i][j]));
}
}
}
bool checked_after_reopen = false;
while (true) {
// Ensure that expected keys exists
// and not expected keys don't exist after recovery
ValidateKeyExistence(db_, keys_must_exist, keys_must_not_exist);
if (checked_after_reopen) {
break;
}
// reopen database again to make sure previous log(s) are not used
//(even if they were skipped)
// reopn database with option to use WAL filter
options = OptionsForLogIterTest();
ReopenWithColumnFamilies({"default", "pikachu"}, options);
checked_after_reopen = true;
}
}
TEST_F(DBTest2, WalFilterTestWithChangeBatchExtraKeys) {
class TestWalFilterWithChangeBatchAddExtraKeys : public WalFilter {
public:
WalProcessingOption LogRecord(const WriteBatch& batch,
WriteBatch* new_batch,
bool* batch_changed) const override {
*new_batch = batch;
Status s = new_batch->Put("key_extra", "value_extra");
if (s.ok()) {
*batch_changed = true;
} else {
assert(false);
}
return WalProcessingOption::kContinueProcessing;
}
const char* Name() const override {
return "WalFilterTestWithChangeBatchExtraKeys";
}
};
std::vector<std::vector<std::string>> batch_keys(3);
batch_keys[0].push_back("key1");
batch_keys[0].push_back("key2");
batch_keys[1].push_back("key3");
batch_keys[1].push_back("key4");
batch_keys[2].push_back("key5");
batch_keys[2].push_back("key6");
Options options = OptionsForLogIterTest();
DestroyAndReopen(options);
CreateAndReopenWithCF({"pikachu"}, options);
// Write given keys in given batches
for (size_t i = 0; i < batch_keys.size(); i++) {
WriteBatch batch;
for (size_t j = 0; j < batch_keys[i].size(); j++) {
ASSERT_OK(batch.Put(handles_[0], batch_keys[i][j], DummyString(1024)));
}
ASSERT_OK(dbfull()->Write(WriteOptions(), &batch));
}
// Create a test filter that would add extra keys
TestWalFilterWithChangeBatchAddExtraKeys test_wal_filter_extra_keys;
// Reopen database with option to use WAL filter
options = OptionsForLogIterTest();
options.wal_filter = &test_wal_filter_extra_keys;
Status status = TryReopenWithColumnFamilies({"default", "pikachu"}, options);
ASSERT_TRUE(status.IsNotSupported());
// Reopen without filter, now reopen should succeed - previous
// attempt to open must not have altered the db.
options = OptionsForLogIterTest();
ReopenWithColumnFamilies({"default", "pikachu"}, options);
std::vector<Slice> keys_must_exist;
std::vector<Slice> keys_must_not_exist; // empty vector
for (size_t i = 0; i < batch_keys.size(); i++) {
for (size_t j = 0; j < batch_keys[i].size(); j++) {
keys_must_exist.push_back(Slice(batch_keys[i][j]));
}
}
ValidateKeyExistence(db_, keys_must_exist, keys_must_not_exist);
}
TEST_F(DBTest2, WalFilterTestWithColumnFamilies) {
class TestWalFilterWithColumnFamilies : public WalFilter {
private:
// column_family_id -> log_number map (provided to WALFilter)
std::map<uint32_t, uint64_t> cf_log_number_map_;
// column_family_name -> column_family_id map (provided to WALFilter)
std::map<std::string, uint32_t> cf_name_id_map_;
// column_family_name -> keys_found_in_wal map
// We store keys that are applicable to the column_family
// during recovery (i.e. aren't already flushed to SST file(s))
// for verification against the keys we expect.
std::map<uint32_t, std::vector<std::string>> cf_wal_keys_;
public:
void ColumnFamilyLogNumberMap(
const std::map<uint32_t, uint64_t>& cf_lognumber_map,
const std::map<std::string, uint32_t>& cf_name_id_map) override {
cf_log_number_map_ = cf_lognumber_map;
cf_name_id_map_ = cf_name_id_map;
}
WalProcessingOption LogRecordFound(unsigned long long log_number,
const std::string& /*log_file_name*/,
const WriteBatch& batch,
WriteBatch* /*new_batch*/,
bool* /*batch_changed*/) override {
class LogRecordBatchHandler : public WriteBatch::Handler {
private:
const std::map<uint32_t, uint64_t>& cf_log_number_map_;
std::map<uint32_t, std::vector<std::string>>& cf_wal_keys_;
unsigned long long log_number_;
public:
LogRecordBatchHandler(
unsigned long long current_log_number,
const std::map<uint32_t, uint64_t>& cf_log_number_map,
std::map<uint32_t, std::vector<std::string>>& cf_wal_keys)
: cf_log_number_map_(cf_log_number_map),
cf_wal_keys_(cf_wal_keys),
log_number_(current_log_number) {}
Status PutCF(uint32_t column_family_id, const Slice& key,
const Slice& /*value*/) override {
auto it = cf_log_number_map_.find(column_family_id);
assert(it != cf_log_number_map_.end());
unsigned long long log_number_for_cf = it->second;
// If the current record is applicable for column_family_id
// (i.e. isn't flushed to SST file(s) for column_family_id)
// add it to the cf_wal_keys_ map for verification.
if (log_number_ >= log_number_for_cf) {
cf_wal_keys_[column_family_id].push_back(
std::string(key.data(), key.size()));
}
return Status::OK();
}
} handler(log_number, cf_log_number_map_, cf_wal_keys_);
Status s = batch.Iterate(&handler);
if (!s.ok()) {
// TODO(AR) is this ok?
return WalProcessingOption::kCorruptedRecord;
}
return WalProcessingOption::kContinueProcessing;
}
const char* Name() const override {
return "WalFilterTestWithColumnFamilies";
}
const std::map<uint32_t, std::vector<std::string>>& GetColumnFamilyKeys() {
return cf_wal_keys_;
}
const std::map<std::string, uint32_t>& GetColumnFamilyNameIdMap() {
return cf_name_id_map_;
}
};
std::vector<std::vector<std::string>> batch_keys_pre_flush(3);
batch_keys_pre_flush[0].push_back("key1");
batch_keys_pre_flush[0].push_back("key2");
batch_keys_pre_flush[1].push_back("key3");
batch_keys_pre_flush[1].push_back("key4");
batch_keys_pre_flush[2].push_back("key5");
batch_keys_pre_flush[2].push_back("key6");
Options options = OptionsForLogIterTest();
DestroyAndReopen(options);
CreateAndReopenWithCF({"pikachu"}, options);
// Write given keys in given batches
for (size_t i = 0; i < batch_keys_pre_flush.size(); i++) {
WriteBatch batch;
for (size_t j = 0; j < batch_keys_pre_flush[i].size(); j++) {
ASSERT_OK(batch.Put(handles_[0], batch_keys_pre_flush[i][j],
DummyString(1024)));
ASSERT_OK(batch.Put(handles_[1], batch_keys_pre_flush[i][j],
DummyString(1024)));
}
ASSERT_OK(dbfull()->Write(WriteOptions(), &batch));
}
// Flush default column-family
ASSERT_OK(db_->Flush(FlushOptions(), handles_[0]));
// Do some more writes
std::vector<std::vector<std::string>> batch_keys_post_flush(3);
batch_keys_post_flush[0].push_back("key7");
batch_keys_post_flush[0].push_back("key8");
batch_keys_post_flush[1].push_back("key9");
batch_keys_post_flush[1].push_back("key10");
batch_keys_post_flush[2].push_back("key11");
batch_keys_post_flush[2].push_back("key12");
// Write given keys in given batches
for (size_t i = 0; i < batch_keys_post_flush.size(); i++) {
WriteBatch batch;
for (size_t j = 0; j < batch_keys_post_flush[i].size(); j++) {
ASSERT_OK(batch.Put(handles_[0], batch_keys_post_flush[i][j],
DummyString(1024)));
ASSERT_OK(batch.Put(handles_[1], batch_keys_post_flush[i][j],
DummyString(1024)));
}
ASSERT_OK(dbfull()->Write(WriteOptions(), &batch));
}
// On Recovery we should only find the second batch applicable to default CF
// But both batches applicable to pikachu CF
// Create a test filter that would add extra keys
TestWalFilterWithColumnFamilies test_wal_filter_column_families;
// Reopen database with option to use WAL filter
options = OptionsForLogIterTest();
options.wal_filter = &test_wal_filter_column_families;
Status status = TryReopenWithColumnFamilies({"default", "pikachu"}, options);
ASSERT_TRUE(status.ok());
// verify that handles_[0] only has post_flush keys
// while handles_[1] has pre and post flush keys
auto cf_wal_keys = test_wal_filter_column_families.GetColumnFamilyKeys();
auto name_id_map = test_wal_filter_column_families.GetColumnFamilyNameIdMap();
size_t index = 0;
auto keys_cf = cf_wal_keys[name_id_map[kDefaultColumnFamilyName]];
// default column-family, only post_flush keys are expected
for (size_t i = 0; i < batch_keys_post_flush.size(); i++) {
for (size_t j = 0; j < batch_keys_post_flush[i].size(); j++) {
Slice key_from_the_log(keys_cf[index++]);
Slice batch_key(batch_keys_post_flush[i][j]);
ASSERT_EQ(key_from_the_log.compare(batch_key), 0);
}
}
ASSERT_EQ(index, keys_cf.size());
index = 0;
keys_cf = cf_wal_keys[name_id_map["pikachu"]];
// pikachu column-family, all keys are expected
for (size_t i = 0; i < batch_keys_pre_flush.size(); i++) {
for (size_t j = 0; j < batch_keys_pre_flush[i].size(); j++) {
Slice key_from_the_log(keys_cf[index++]);
Slice batch_key(batch_keys_pre_flush[i][j]);
ASSERT_EQ(key_from_the_log.compare(batch_key), 0);
}
}
for (size_t i = 0; i < batch_keys_post_flush.size(); i++) {
for (size_t j = 0; j < batch_keys_post_flush[i].size(); j++) {
Slice key_from_the_log(keys_cf[index++]);
Slice batch_key(batch_keys_post_flush[i][j]);
ASSERT_EQ(key_from_the_log.compare(batch_key), 0);
}
}
ASSERT_EQ(index, keys_cf.size());
}
TEST_F(DBTest2, PresetCompressionDict) {
// Verifies that compression ratio improves when dictionary is enabled, and
// improves even further when the dictionary is trained by ZSTD.
const size_t kBlockSizeBytes = 4 << 10;
const size_t kL0FileBytes = 128 << 10;
const size_t kApproxPerBlockOverheadBytes = 50;
const int kNumL0Files = 5;
Options options;
// Make sure to use any custom env that the test is configured with.
options.env = CurrentOptions().env;
options.allow_concurrent_memtable_write = false;
options.arena_block_size = kBlockSizeBytes;
options.create_if_missing = true;
options.disable_auto_compactions = true;
options.level0_file_num_compaction_trigger = kNumL0Files;
options.memtable_factory.reset(
test::NewSpecialSkipListFactory(kL0FileBytes / kBlockSizeBytes));
options.num_levels = 2;
options.target_file_size_base = kL0FileBytes;
options.target_file_size_multiplier = 2;
options.write_buffer_size = kL0FileBytes;
BlockBasedTableOptions table_options;
table_options.block_size = kBlockSizeBytes;
std::vector<CompressionType> compression_types;
if (Zlib_Supported()) {
compression_types.push_back(kZlibCompression);
}
#if LZ4_VERSION_NUMBER >= 10400 // r124+
compression_types.push_back(kLZ4Compression);
compression_types.push_back(kLZ4HCCompression);
#endif // LZ4_VERSION_NUMBER >= 10400
if (ZSTD_Supported()) {
compression_types.push_back(kZSTD);
}
enum DictionaryTypes : int {
kWithoutDict,
kWithDict,
kWithZSTDfinalizeDict,
kWithZSTDTrainedDict,
kDictEnd,
};
for (auto compression_type : compression_types) {
options.compression = compression_type;
size_t bytes_without_dict = 0;
size_t bytes_with_dict = 0;
size_t bytes_with_zstd_finalize_dict = 0;
size_t bytes_with_zstd_trained_dict = 0;
for (int i = kWithoutDict; i < kDictEnd; i++) {
// First iteration: compress without preset dictionary
// Second iteration: compress with preset dictionary
// Third iteration (zstd only): compress with zstd-trained dictionary
//
// To make sure the compression dictionary has the intended effect, we
// verify the compressed size is smaller in successive iterations. Also in
// the non-first iterations, verify the data we get out is the same data
// we put in.
switch (i) {
case kWithoutDict:
options.compression_opts.max_dict_bytes = 0;
options.compression_opts.zstd_max_train_bytes = 0;
break;
case kWithDict:
options.compression_opts.max_dict_bytes = kBlockSizeBytes;
options.compression_opts.zstd_max_train_bytes = 0;
break;
case kWithZSTDfinalizeDict:
if (compression_type != kZSTD ||
!ZSTD_FinalizeDictionarySupported()) {
continue;
}
options.compression_opts.max_dict_bytes = kBlockSizeBytes;
options.compression_opts.zstd_max_train_bytes = kL0FileBytes;
options.compression_opts.use_zstd_dict_trainer = false;
break;
case kWithZSTDTrainedDict:
if (compression_type != kZSTD || !ZSTD_TrainDictionarySupported()) {
continue;
}
options.compression_opts.max_dict_bytes = kBlockSizeBytes;
options.compression_opts.zstd_max_train_bytes = kL0FileBytes;
options.compression_opts.use_zstd_dict_trainer = true;
break;
default:
assert(false);
}
options.statistics = ROCKSDB_NAMESPACE::CreateDBStatistics();
options.table_factory.reset(NewBlockBasedTableFactory(table_options));
CreateAndReopenWithCF({"pikachu"}, options);
Random rnd(301);
std::string seq_datas[10];
for (int j = 0; j < 10; ++j) {
seq_datas[j] =
rnd.RandomString(kBlockSizeBytes - kApproxPerBlockOverheadBytes);
}
ASSERT_EQ(0, NumTableFilesAtLevel(0, 1));
for (int j = 0; j < kNumL0Files; ++j) {
for (size_t k = 0; k < kL0FileBytes / kBlockSizeBytes + 1; ++k) {
auto key_num = j * (kL0FileBytes / kBlockSizeBytes) + k;
ASSERT_OK(Put(1, Key(static_cast<int>(key_num)),
seq_datas[(key_num / 10) % 10]));
}
ASSERT_OK(dbfull()->TEST_WaitForFlushMemTable(handles_[1]));
ASSERT_EQ(j + 1, NumTableFilesAtLevel(0, 1));
}
ASSERT_OK(dbfull()->TEST_CompactRange(0, nullptr, nullptr, handles_[1],
true /* disallow_trivial_move */));
ASSERT_EQ(0, NumTableFilesAtLevel(0, 1));
ASSERT_GT(NumTableFilesAtLevel(1, 1), 0);
// Get the live sst files size
size_t total_sst_bytes = TotalSize(1);
if (i == kWithoutDict) {
bytes_without_dict = total_sst_bytes;
} else if (i == kWithDict) {
bytes_with_dict = total_sst_bytes;
} else if (i == kWithZSTDfinalizeDict) {
bytes_with_zstd_finalize_dict = total_sst_bytes;
} else if (i == kWithZSTDTrainedDict) {
bytes_with_zstd_trained_dict = total_sst_bytes;
}
for (size_t j = 0; j < kNumL0Files * (kL0FileBytes / kBlockSizeBytes);
j++) {
ASSERT_EQ(seq_datas[(j / 10) % 10], Get(1, Key(static_cast<int>(j))));
}
if (i == kWithDict) {
ASSERT_GT(bytes_without_dict, bytes_with_dict);
} else if (i == kWithZSTDTrainedDict) {
// In zstd compression, it is sometimes possible that using a finalized
// dictionary does not get as good a compression ratio as raw content
// dictionary. But using a dictionary should always get better
// compression ratio than not using one.
ASSERT_TRUE(bytes_with_dict > bytes_with_zstd_finalize_dict ||
bytes_without_dict > bytes_with_zstd_finalize_dict);
} else if (i == kWithZSTDTrainedDict) {
// In zstd compression, it is sometimes possible that using a trained
// dictionary does not get as good a compression ratio as without
// training.
// But using a dictionary (with or without training) should always get
// better compression ratio than not using one.
ASSERT_TRUE(bytes_with_dict > bytes_with_zstd_trained_dict ||
bytes_without_dict > bytes_with_zstd_trained_dict);
}
DestroyAndReopen(options);
}
}
}
TEST_F(DBTest2, PresetCompressionDictLocality) {
if (!ZSTD_Supported()) {
return;
}
// Verifies that compression dictionary is generated from local data. The
// verification simply checks all output SSTs have different compression
// dictionaries. We do not verify effectiveness as that'd likely be flaky in
// the future.
const int kNumEntriesPerFile = 1 << 10; // 1KB
const int kNumBytesPerEntry = 1 << 10; // 1KB
const int kNumFiles = 4;
Options options = CurrentOptions();
options.compression = kZSTD;
options.compression_opts.max_dict_bytes = 1 << 14; // 16KB
options.compression_opts.zstd_max_train_bytes = 1 << 18; // 256KB
options.statistics = ROCKSDB_NAMESPACE::CreateDBStatistics();
options.target_file_size_base = kNumEntriesPerFile * kNumBytesPerEntry;
BlockBasedTableOptions table_options;
table_options.cache_index_and_filter_blocks = true;
options.table_factory.reset(NewBlockBasedTableFactory(table_options));
Reopen(options);
Random rnd(301);
for (int i = 0; i < kNumFiles; ++i) {
for (int j = 0; j < kNumEntriesPerFile; ++j) {
ASSERT_OK(Put(Key(i * kNumEntriesPerFile + j),
rnd.RandomString(kNumBytesPerEntry)));
}
ASSERT_OK(Flush());
MoveFilesToLevel(1);
ASSERT_EQ(NumTableFilesAtLevel(1), i + 1);
}
// Store all the dictionaries generated during a full compaction.
std::vector<std::string> compression_dicts;
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
"BlockBasedTableBuilder::WriteCompressionDictBlock:RawDict",
[&](void* arg) {
compression_dicts.emplace_back(static_cast<Slice*>(arg)->ToString());
});
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
CompactRangeOptions compact_range_opts;
compact_range_opts.bottommost_level_compaction =
BottommostLevelCompaction::kForceOptimized;
ASSERT_OK(db_->CompactRange(compact_range_opts, nullptr, nullptr));
// Dictionary compression should not be so good as to compress four totally
// random files into one. If it does then there's probably something wrong
// with the test.
ASSERT_GT(NumTableFilesAtLevel(1), 1);
// Furthermore, there should be one compression dictionary generated per file.
// And they should all be different from each other.
ASSERT_EQ(NumTableFilesAtLevel(1),
static_cast<int>(compression_dicts.size()));
for (size_t i = 1; i < compression_dicts.size(); ++i) {
std::string& a = compression_dicts[i - 1];
std::string& b = compression_dicts[i];
size_t alen = a.size();
size_t blen = b.size();
ASSERT_TRUE(alen != blen || memcmp(a.data(), b.data(), alen) != 0);
}
}
class PresetCompressionDictTest
: public DBTestBase,
public testing::WithParamInterface<std::tuple<CompressionType, bool>> {
public:
PresetCompressionDictTest()
: DBTestBase("db_test2", false /* env_do_fsync */),
compression_type_(std::get<0>(GetParam())),
bottommost_(std::get<1>(GetParam())) {}
protected:
const CompressionType compression_type_;
const bool bottommost_;
};
INSTANTIATE_TEST_CASE_P(
DBTest2, PresetCompressionDictTest,
::testing::Combine(::testing::ValuesIn(GetSupportedDictCompressions()),
::testing::Bool()));
TEST_P(PresetCompressionDictTest, Flush) {
// Verifies that dictionary is generated and written during flush only when
// `ColumnFamilyOptions::compression` enables dictionary. Also verifies the
// size of the dictionary is within expectations according to the limit on
// buffering set by `CompressionOptions::max_dict_buffer_bytes`.
const size_t kValueLen = 256;
const size_t kKeysPerFile = 1 << 10;
const size_t kDictLen = 16 << 10;
const size_t kBlockLen = 4 << 10;
Options options = CurrentOptions();
if (bottommost_) {
options.bottommost_compression = compression_type_;
options.bottommost_compression_opts.enabled = true;
options.bottommost_compression_opts.max_dict_bytes = kDictLen;
options.bottommost_compression_opts.max_dict_buffer_bytes = kBlockLen;
} else {
options.compression = compression_type_;
options.compression_opts.max_dict_bytes = kDictLen;
options.compression_opts.max_dict_buffer_bytes = kBlockLen;
}
options.memtable_factory.reset(test::NewSpecialSkipListFactory(kKeysPerFile));
options.statistics = CreateDBStatistics();
BlockBasedTableOptions bbto;
bbto.block_size = kBlockLen;
bbto.cache_index_and_filter_blocks = true;
options.table_factory.reset(NewBlockBasedTableFactory(bbto));
Reopen(options);
Random rnd(301);
for (size_t i = 0; i <= kKeysPerFile; ++i) {
ASSERT_OK(Put(Key(static_cast<int>(i)), rnd.RandomString(kValueLen)));
}
ASSERT_OK(dbfull()->TEST_WaitForFlushMemTable());
// We can use `BLOCK_CACHE_COMPRESSION_DICT_BYTES_INSERT` to detect whether a
// compression dictionary exists since dictionaries would be preloaded when
// the flush finishes.
if (bottommost_) {
// Flush is never considered bottommost. This should change in the future
// since flushed files may have nothing underneath them, like the one in
// this test case.
ASSERT_EQ(
TestGetTickerCount(options, BLOCK_CACHE_COMPRESSION_DICT_BYTES_INSERT),
0);
} else {
ASSERT_GT(
TestGetTickerCount(options, BLOCK_CACHE_COMPRESSION_DICT_BYTES_INSERT),
0);
// TODO(ajkr): fix the below assertion to work with ZSTD. The expectation on
// number of bytes needs to be adjusted in case the cached block is in
// ZSTD's digested dictionary format.
if (compression_type_ != kZSTD &&
compression_type_ != kZSTDNotFinalCompression) {
// Although we limited buffering to `kBlockLen`, there may be up to two
// blocks of data included in the dictionary since we only check limit
// after each block is built.
ASSERT_LE(TestGetTickerCount(options,
BLOCK_CACHE_COMPRESSION_DICT_BYTES_INSERT),
2 * kBlockLen);
}
}
}
TEST_P(PresetCompressionDictTest, CompactNonBottommost) {
// Verifies that dictionary is generated and written during compaction to
// non-bottommost level only when `ColumnFamilyOptions::compression` enables
// dictionary. Also verifies the size of the dictionary is within expectations
// according to the limit on buffering set by
// `CompressionOptions::max_dict_buffer_bytes`.
const size_t kValueLen = 256;
const size_t kKeysPerFile = 1 << 10;
const size_t kDictLen = 16 << 10;
const size_t kBlockLen = 4 << 10;
Options options = CurrentOptions();
if (bottommost_) {
options.bottommost_compression = compression_type_;
options.bottommost_compression_opts.enabled = true;
options.bottommost_compression_opts.max_dict_bytes = kDictLen;
options.bottommost_compression_opts.max_dict_buffer_bytes = kBlockLen;
} else {
options.compression = compression_type_;
options.compression_opts.max_dict_bytes = kDictLen;
options.compression_opts.max_dict_buffer_bytes = kBlockLen;
}
options.disable_auto_compactions = true;
options.statistics = CreateDBStatistics();
BlockBasedTableOptions bbto;
bbto.block_size = kBlockLen;
bbto.cache_index_and_filter_blocks = true;
options.table_factory.reset(NewBlockBasedTableFactory(bbto));
Reopen(options);
Random rnd(301);
for (size_t j = 0; j <= kKeysPerFile; ++j) {
ASSERT_OK(Put(Key(static_cast<int>(j)), rnd.RandomString(kValueLen)));
}
ASSERT_OK(Flush());
MoveFilesToLevel(2);
for (int i = 0; i < 2; ++i) {
for (size_t j = 0; j <= kKeysPerFile; ++j) {
ASSERT_OK(Put(Key(static_cast<int>(j)), rnd.RandomString(kValueLen)));
}
ASSERT_OK(Flush());
}
ASSERT_EQ("2,0,1", FilesPerLevel(0));
uint64_t prev_compression_dict_bytes_inserted =
TestGetTickerCount(options, BLOCK_CACHE_COMPRESSION_DICT_BYTES_INSERT);
// This L0->L1 compaction merges the two L0 files into L1. The produced L1
// file is not bottommost due to the existing L2 file covering the same key-
// range.
ASSERT_OK(dbfull()->TEST_CompactRange(0, nullptr, nullptr));
ASSERT_EQ("0,1,1", FilesPerLevel(0));
// We can use `BLOCK_CACHE_COMPRESSION_DICT_BYTES_INSERT` to detect whether a
// compression dictionary exists since dictionaries would be preloaded when
// the compaction finishes.
if (bottommost_) {
ASSERT_EQ(
TestGetTickerCount(options, BLOCK_CACHE_COMPRESSION_DICT_BYTES_INSERT),
prev_compression_dict_bytes_inserted);
} else {
ASSERT_GT(
TestGetTickerCount(options, BLOCK_CACHE_COMPRESSION_DICT_BYTES_INSERT),
prev_compression_dict_bytes_inserted);
// TODO(ajkr): fix the below assertion to work with ZSTD. The expectation on
// number of bytes needs to be adjusted in case the cached block is in
// ZSTD's digested dictionary format.
if (compression_type_ != kZSTD &&
compression_type_ != kZSTDNotFinalCompression) {
// Although we limited buffering to `kBlockLen`, there may be up to two
// blocks of data included in the dictionary since we only check limit
// after each block is built.
ASSERT_LE(TestGetTickerCount(options,
BLOCK_CACHE_COMPRESSION_DICT_BYTES_INSERT),
prev_compression_dict_bytes_inserted + 2 * kBlockLen);
}
}
}
TEST_P(PresetCompressionDictTest, CompactBottommost) {
// Verifies that dictionary is generated and written during compaction to
// non-bottommost level only when either `ColumnFamilyOptions::compression` or
// `ColumnFamilyOptions::bottommost_compression` enables dictionary. Also
// verifies the size of the dictionary is within expectations according to the
// limit on buffering set by `CompressionOptions::max_dict_buffer_bytes`.
const size_t kValueLen = 256;
const size_t kKeysPerFile = 1 << 10;
const size_t kDictLen = 16 << 10;
const size_t kBlockLen = 4 << 10;
Options options = CurrentOptions();
if (bottommost_) {
options.bottommost_compression = compression_type_;
options.bottommost_compression_opts.enabled = true;
options.bottommost_compression_opts.max_dict_bytes = kDictLen;
options.bottommost_compression_opts.max_dict_buffer_bytes = kBlockLen;
} else {
options.compression = compression_type_;
options.compression_opts.max_dict_bytes = kDictLen;
options.compression_opts.max_dict_buffer_bytes = kBlockLen;
}
options.disable_auto_compactions = true;
options.statistics = CreateDBStatistics();
BlockBasedTableOptions bbto;
bbto.block_size = kBlockLen;
bbto.cache_index_and_filter_blocks = true;
options.table_factory.reset(NewBlockBasedTableFactory(bbto));
Reopen(options);
Random rnd(301);
for (int i = 0; i < 2; ++i) {
for (size_t j = 0; j <= kKeysPerFile; ++j) {
ASSERT_OK(Put(Key(static_cast<int>(j)), rnd.RandomString(kValueLen)));
}
ASSERT_OK(Flush());
}
ASSERT_EQ("2", FilesPerLevel(0));
uint64_t prev_compression_dict_bytes_inserted =
TestGetTickerCount(options, BLOCK_CACHE_COMPRESSION_DICT_BYTES_INSERT);
CompactRangeOptions cro;
ASSERT_OK(db_->CompactRange(cro, nullptr, nullptr));
ASSERT_EQ("0,1", FilesPerLevel(0));
ASSERT_GT(
TestGetTickerCount(options, BLOCK_CACHE_COMPRESSION_DICT_BYTES_INSERT),
prev_compression_dict_bytes_inserted);
// TODO(ajkr): fix the below assertion to work with ZSTD. The expectation on
// number of bytes needs to be adjusted in case the cached block is in ZSTD's
// digested dictionary format.
if (compression_type_ != kZSTD &&
compression_type_ != kZSTDNotFinalCompression) {
// Although we limited buffering to `kBlockLen`, there may be up to two
// blocks of data included in the dictionary since we only check limit after
// each block is built.
ASSERT_LE(
TestGetTickerCount(options, BLOCK_CACHE_COMPRESSION_DICT_BYTES_INSERT),
prev_compression_dict_bytes_inserted + 2 * kBlockLen);
}
}
class CompactionCompressionListener : public EventListener {
public:
explicit CompactionCompressionListener(Options* db_options)
: db_options_(db_options) {}
void OnCompactionCompleted(DB* db, const CompactionJobInfo& ci) override {
// Figure out last level with files
int bottommost_level = 0;
for (int level = 0; level < db->NumberLevels(); level++) {
std::string files_at_level;
ASSERT_TRUE(
db->GetProperty("rocksdb.num-files-at-level" + std::to_string(level),
&files_at_level));
if (files_at_level != "0") {
bottommost_level = level;
}
}
if (db_options_->bottommost_compression != kDisableCompressionOption &&
ci.output_level == bottommost_level) {
ASSERT_EQ(ci.compression, db_options_->bottommost_compression);
} else if (db_options_->compression_per_level.size() != 0) {
ASSERT_EQ(ci.compression,
db_options_->compression_per_level[ci.output_level]);
} else {
ASSERT_EQ(ci.compression, db_options_->compression);
}
max_level_checked = std::max(max_level_checked, ci.output_level);
}
int max_level_checked = 0;
const Options* db_options_;
};
enum CompressionFailureType {
kTestCompressionFail,
kTestDecompressionFail,
kTestDecompressionCorruption
};
class CompressionFailuresTest
: public DBTest2,
public testing::WithParamInterface<std::tuple<
CompressionFailureType, CompressionType, uint32_t, uint32_t>> {
public:
CompressionFailuresTest() {
std::tie(compression_failure_type_, compression_type_,
compression_max_dict_bytes_, compression_parallel_threads_) =
GetParam();
}
CompressionFailureType compression_failure_type_ = kTestCompressionFail;
CompressionType compression_type_ = kNoCompression;
uint32_t compression_max_dict_bytes_ = 0;
uint32_t compression_parallel_threads_ = 0;
};
INSTANTIATE_TEST_CASE_P(
DBTest2, CompressionFailuresTest,
::testing::Combine(::testing::Values(kTestCompressionFail,
kTestDecompressionFail,
kTestDecompressionCorruption),
::testing::ValuesIn(GetSupportedCompressions()),
::testing::Values(0, 10), ::testing::Values(1, 4)));
TEST_P(CompressionFailuresTest, CompressionFailures) {
if (compression_type_ == kNoCompression) {
return;
}
Options options = CurrentOptions();
options.level0_file_num_compaction_trigger = 2;
options.max_bytes_for_level_base = 1024;
options.max_bytes_for_level_multiplier = 2;
options.num_levels = 7;
options.max_background_compactions = 1;
options.target_file_size_base = 512;
BlockBasedTableOptions table_options;
table_options.block_size = 512;
table_options.verify_compression = true;
options.table_factory.reset(NewBlockBasedTableFactory(table_options));
options.compression = compression_type_;
options.compression_opts.parallel_threads = compression_parallel_threads_;
options.compression_opts.max_dict_bytes = compression_max_dict_bytes_;
options.bottommost_compression_opts.parallel_threads =
compression_parallel_threads_;
options.bottommost_compression_opts.max_dict_bytes =
compression_max_dict_bytes_;
if (compression_failure_type_ == kTestCompressionFail) {
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
"CompressData:TamperWithReturnValue", [](void* arg) {
bool* ret = static_cast<bool*>(arg);
*ret = false;
});
} else if (compression_failure_type_ == kTestDecompressionFail) {
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
"UncompressBlockData:TamperWithReturnValue", [](void* arg) {
Status* ret = static_cast<Status*>(arg);
ASSERT_OK(*ret);
*ret = Status::Corruption("kTestDecompressionFail");
});
} else if (compression_failure_type_ == kTestDecompressionCorruption) {
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
"UncompressBlockData:"
"TamperWithDecompressionOutput",
[](void* arg) {
BlockContents* contents = static_cast<BlockContents*>(arg);
// Ensure uncompressed data != original data
const size_t len = contents->data.size() + 1;
std::unique_ptr<char[]> fake_data(new char[len]());
*contents = BlockContents(std::move(fake_data), len);
});
}
std::map<std::string, std::string> key_value_written;
const int kKeySize = 5;
const int kValUnitSize = 16;
const int kValSize = 256;
Random rnd(405);
Status s = Status::OK();
DestroyAndReopen(options);
// Write 10 random files
for (int i = 0; i < 10; i++) {
for (int j = 0; j < 5; j++) {
std::string key = rnd.RandomString(kKeySize);
// Ensure good compression ratio
std::string valueUnit = rnd.RandomString(kValUnitSize);
std::string value;
for (int k = 0; k < kValSize; k += kValUnitSize) {
value += valueUnit;
}
s = Put(key, value);
if (compression_failure_type_ == kTestCompressionFail) {
key_value_written[key] = value;
ASSERT_OK(s);
}
}
s = Flush();
if (compression_failure_type_ == kTestCompressionFail) {
ASSERT_OK(s);
}
s = dbfull()->TEST_WaitForCompact();
if (compression_failure_type_ == kTestCompressionFail) {
ASSERT_OK(s);
}
if (i == 4) {
// Make compression fail at the mid of table building
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
}
}
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->DisableProcessing();
if (compression_failure_type_ == kTestCompressionFail) {
// Should be kNoCompression, check content consistency
std::unique_ptr<Iterator> db_iter(db_->NewIterator(ReadOptions()));
for (db_iter->SeekToFirst(); db_iter->Valid(); db_iter->Next()) {
std::string key = db_iter->key().ToString();
std::string value = db_iter->value().ToString();
ASSERT_NE(key_value_written.find(key), key_value_written.end());
ASSERT_EQ(key_value_written[key], value);
key_value_written.erase(key);
}
ASSERT_OK(db_iter->status());
ASSERT_EQ(0, key_value_written.size());
} else if (compression_failure_type_ == kTestDecompressionFail) {
ASSERT_EQ(std::string(s.getState()),
"Could not decompress: kTestDecompressionFail");
} else if (compression_failure_type_ == kTestDecompressionCorruption) {
ASSERT_EQ(std::string(s.getState()),
"Decompressed block did not match pre-compression block");
}
}
TEST_F(DBTest2, CompressionOptions) {
if (!Zlib_Supported() || !Snappy_Supported()) {
return;
}
Options options = CurrentOptions();
options.level0_file_num_compaction_trigger = 2;
options.max_bytes_for_level_base = 100;
options.max_bytes_for_level_multiplier = 2;
options.num_levels = 7;
options.max_background_compactions = 1;
CompactionCompressionListener* listener =
new CompactionCompressionListener(&options);
options.listeners.emplace_back(listener);
const int kKeySize = 5;
const int kValSize = 20;
Random rnd(301);
std::vector<uint32_t> compression_parallel_threads = {1, 4};
std::map<std::string, std::string> key_value_written;
for (int iter = 0; iter <= 2; iter++) {
listener->max_level_checked = 0;
if (iter == 0) {
// Use different compression algorithms for different levels but
// always use Zlib for bottommost level
options.compression_per_level = {kNoCompression, kNoCompression,
kNoCompression, kSnappyCompression,
kSnappyCompression, kSnappyCompression,
kZlibCompression};
options.compression = kNoCompression;
options.bottommost_compression = kZlibCompression;
} else if (iter == 1) {
// Use Snappy except for bottommost level use ZLib
options.compression_per_level = {};
options.compression = kSnappyCompression;
options.bottommost_compression = kZlibCompression;
} else if (iter == 2) {
// Use Snappy everywhere
options.compression_per_level = {};
options.compression = kSnappyCompression;
options.bottommost_compression = kDisableCompressionOption;
}
for (auto num_threads : compression_parallel_threads) {
options.compression_opts.parallel_threads = num_threads;
options.bottommost_compression_opts.parallel_threads = num_threads;
DestroyAndReopen(options);
// Write 10 random files
for (int i = 0; i < 10; i++) {
for (int j = 0; j < 5; j++) {
std::string key = rnd.RandomString(kKeySize);
std::string value = rnd.RandomString(kValSize);
key_value_written[key] = value;
ASSERT_OK(Put(key, value));
}
ASSERT_OK(Flush());
ASSERT_OK(dbfull()->TEST_WaitForCompact());
}
// Make sure that we wrote enough to check all 7 levels
ASSERT_EQ(listener->max_level_checked, 6);
// Make sure database content is the same as key_value_written
std::unique_ptr<Iterator> db_iter(db_->NewIterator(ReadOptions()));
for (db_iter->SeekToFirst(); db_iter->Valid(); db_iter->Next()) {
std::string key = db_iter->key().ToString();
std::string value = db_iter->value().ToString();
ASSERT_NE(key_value_written.find(key), key_value_written.end());
ASSERT_EQ(key_value_written[key], value);
key_value_written.erase(key);
}
ASSERT_OK(db_iter->status());
ASSERT_EQ(0, key_value_written.size());
}
}
}
class CompactionStallTestListener : public EventListener {
public:
CompactionStallTestListener()
: compacting_files_cnt_(0), compacted_files_cnt_(0) {}
void OnCompactionBegin(DB* /*db*/, const CompactionJobInfo& ci) override {
ASSERT_EQ(ci.cf_name, "default");
ASSERT_EQ(ci.base_input_level, 0);
ASSERT_EQ(ci.compaction_reason, CompactionReason::kLevelL0FilesNum);
compacting_files_cnt_ += ci.input_files.size();
}
void OnCompactionCompleted(DB* /*db*/, const CompactionJobInfo& ci) override {
ASSERT_EQ(ci.cf_name, "default");
ASSERT_EQ(ci.base_input_level, 0);
ASSERT_EQ(ci.compaction_reason, CompactionReason::kLevelL0FilesNum);
compacted_files_cnt_ += ci.input_files.size();
}
std::atomic<size_t> compacting_files_cnt_;
std::atomic<size_t> compacted_files_cnt_;
};
TEST_F(DBTest2, CompactionStall) {
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->LoadDependency(
{{"DBImpl::BGWorkCompaction", "DBTest2::CompactionStall:0"},
{"DBImpl::BGWorkCompaction", "DBTest2::CompactionStall:1"},
{"DBTest2::CompactionStall:2",
"DBImpl::NotifyOnCompactionBegin::UnlockMutex"},
{"DBTest2::CompactionStall:3",
"DBImpl::NotifyOnCompactionCompleted::UnlockMutex"}});
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
Options options = CurrentOptions();
options.level0_file_num_compaction_trigger = 4;
options.max_background_compactions = 40;
CompactionStallTestListener* listener = new CompactionStallTestListener();
options.listeners.emplace_back(listener);
DestroyAndReopen(options);
// make sure all background compaction jobs can be scheduled
auto stop_token =
dbfull()->TEST_write_controler().GetCompactionPressureToken();
Random rnd(301);
// 4 Files in L0
for (int i = 0; i < 4; i++) {
for (int j = 0; j < 10; j++) {
ASSERT_OK(Put(rnd.RandomString(10), rnd.RandomString(10)));
}
ASSERT_OK(Flush());
}
// Wait for compaction to be triggered
TEST_SYNC_POINT("DBTest2::CompactionStall:0");
// Clear "DBImpl::BGWorkCompaction" SYNC_POINT since we want to hold it again
// at DBTest2::CompactionStall::1
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->ClearTrace();
// Another 6 L0 files to trigger compaction again
for (int i = 0; i < 6; i++) {
for (int j = 0; j < 10; j++) {
ASSERT_OK(Put(rnd.RandomString(10), rnd.RandomString(10)));
}
ASSERT_OK(Flush());
}
// Wait for another compaction to be triggered
TEST_SYNC_POINT("DBTest2::CompactionStall:1");
// Hold NotifyOnCompactionBegin in the unlock mutex section
TEST_SYNC_POINT("DBTest2::CompactionStall:2");
// Hold NotifyOnCompactionCompleted in the unlock mutex section
TEST_SYNC_POINT("DBTest2::CompactionStall:3");
ASSERT_OK(dbfull()->TEST_WaitForCompact());
ASSERT_LT(NumTableFilesAtLevel(0),
options.level0_file_num_compaction_trigger);
ASSERT_GT(listener->compacted_files_cnt_.load(),
10 - options.level0_file_num_compaction_trigger);
ASSERT_EQ(listener->compacting_files_cnt_.load(),
listener->compacted_files_cnt_.load());
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->DisableProcessing();
}
TEST_F(DBTest2, FirstSnapshotTest) {
Options options;
options.write_buffer_size = 100000; // Small write buffer
options = CurrentOptions(options);
CreateAndReopenWithCF({"pikachu"}, options);
// This snapshot will have sequence number 0 what is expected behaviour.
const Snapshot* s1 = db_->GetSnapshot();
ASSERT_OK(Put(1, "k1", std::string(100000, 'x'))); // Fill memtable
ASSERT_OK(Put(1, "k2", std::string(100000, 'y'))); // Trigger flush
db_->ReleaseSnapshot(s1);
}
TEST_F(DBTest2, DuplicateSnapshot) {
Options options;
options = CurrentOptions(options);
std::vector<const Snapshot*> snapshots;
DBImpl* dbi = static_cast_with_check<DBImpl>(db_);
SequenceNumber oldest_ww_snap, first_ww_snap;
ASSERT_OK(Put("k", "v")); // inc seq
snapshots.push_back(db_->GetSnapshot());
snapshots.push_back(db_->GetSnapshot());
ASSERT_OK(Put("k", "v")); // inc seq
snapshots.push_back(db_->GetSnapshot());
snapshots.push_back(dbi->GetSnapshotForWriteConflictBoundary());
first_ww_snap = snapshots.back()->GetSequenceNumber();
ASSERT_OK(Put("k", "v")); // inc seq
snapshots.push_back(dbi->GetSnapshotForWriteConflictBoundary());
snapshots.push_back(db_->GetSnapshot());
ASSERT_OK(Put("k", "v")); // inc seq
snapshots.push_back(db_->GetSnapshot());
{
InstrumentedMutexLock l(dbi->mutex());
auto seqs = dbi->snapshots().GetAll(&oldest_ww_snap);
ASSERT_EQ(seqs.size(), 4); // duplicates are not counted
ASSERT_EQ(oldest_ww_snap, first_ww_snap);
}
for (auto s : snapshots) {
db_->ReleaseSnapshot(s);
}
}
class PinL0IndexAndFilterBlocksTest
: public DBTestBase,
public testing::WithParamInterface<std::tuple<bool, bool>> {
public:
PinL0IndexAndFilterBlocksTest()
: DBTestBase("db_pin_l0_index_bloom_test", /*env_do_fsync=*/true) {}
void SetUp() override {
infinite_max_files_ = std::get<0>(GetParam());
disallow_preload_ = std::get<1>(GetParam());
}
void CreateTwoLevels(Options* options, bool close_afterwards) {
if (infinite_max_files_) {
options->max_open_files = -1;
}
options->create_if_missing = true;
options->statistics = ROCKSDB_NAMESPACE::CreateDBStatistics();
BlockBasedTableOptions table_options;
table_options.cache_index_and_filter_blocks = true;
table_options.pin_l0_filter_and_index_blocks_in_cache = true;
table_options.filter_policy.reset(NewBloomFilterPolicy(20));
options->table_factory.reset(NewBlockBasedTableFactory(table_options));
CreateAndReopenWithCF({"pikachu"}, *options);
ASSERT_OK(Put(1, "a", "begin"));
ASSERT_OK(Put(1, "z", "end"));
ASSERT_OK(Flush(1));
// move this table to L1
ASSERT_OK(dbfull()->TEST_CompactRange(0, nullptr, nullptr, handles_[1]));
ASSERT_EQ(1, NumTableFilesAtLevel(1, 1));
// reset block cache
table_options.block_cache = NewLRUCache(64 * 1024);
options->table_factory.reset(NewBlockBasedTableFactory(table_options));
ASSERT_OK(TryReopenWithColumnFamilies({"default", "pikachu"}, *options));
// create new table at L0
ASSERT_OK(Put(1, "a2", "begin2"));
ASSERT_OK(Put(1, "z2", "end2"));
ASSERT_OK(Flush(1));
if (close_afterwards) {
Close(); // This ensures that there is no ref to block cache entries
}
table_options.block_cache->EraseUnRefEntries();
}
bool infinite_max_files_;
bool disallow_preload_;
};
TEST_P(PinL0IndexAndFilterBlocksTest,
IndexAndFilterBlocksOfNewTableAddedToCacheWithPinning) {
Options options = CurrentOptions();
if (infinite_max_files_) {
options.max_open_files = -1;
}
options.create_if_missing = true;
options.statistics = ROCKSDB_NAMESPACE::CreateDBStatistics();
BlockBasedTableOptions table_options;
table_options.cache_index_and_filter_blocks = true;
table_options.pin_l0_filter_and_index_blocks_in_cache = true;
table_options.filter_policy.reset(NewBloomFilterPolicy(20));
options.table_factory.reset(NewBlockBasedTableFactory(table_options));
CreateAndReopenWithCF({"pikachu"}, options);
ASSERT_OK(Put(1, "key", "val"));
// Create a new table.
ASSERT_OK(Flush(1));
// index/filter blocks added to block cache right after table creation.
ASSERT_EQ(1, TestGetTickerCount(options, BLOCK_CACHE_FILTER_MISS));
ASSERT_EQ(0, TestGetTickerCount(options, BLOCK_CACHE_FILTER_HIT));
ASSERT_EQ(1, TestGetTickerCount(options, BLOCK_CACHE_INDEX_MISS));
ASSERT_EQ(0, TestGetTickerCount(options, BLOCK_CACHE_INDEX_HIT));
// only index/filter were added
ASSERT_EQ(2, TestGetTickerCount(options, BLOCK_CACHE_ADD));
ASSERT_EQ(0, TestGetTickerCount(options, BLOCK_CACHE_DATA_MISS));
std::string value;
// Miss and hit count should remain the same, they're all pinned.
ASSERT_TRUE(db_->KeyMayExist(ReadOptions(), handles_[1], "key", &value));
ASSERT_EQ(1, TestGetTickerCount(options, BLOCK_CACHE_FILTER_MISS));
ASSERT_EQ(0, TestGetTickerCount(options, BLOCK_CACHE_FILTER_HIT));
ASSERT_EQ(1, TestGetTickerCount(options, BLOCK_CACHE_INDEX_MISS));
ASSERT_EQ(0, TestGetTickerCount(options, BLOCK_CACHE_INDEX_HIT));
// Miss and hit count should remain the same, they're all pinned.
value = Get(1, "key");
ASSERT_EQ(1, TestGetTickerCount(options, BLOCK_CACHE_FILTER_MISS));
ASSERT_EQ(0, TestGetTickerCount(options, BLOCK_CACHE_FILTER_HIT));
ASSERT_EQ(1, TestGetTickerCount(options, BLOCK_CACHE_INDEX_MISS));
ASSERT_EQ(0, TestGetTickerCount(options, BLOCK_CACHE_INDEX_HIT));
}
TEST_P(PinL0IndexAndFilterBlocksTest,
MultiLevelIndexAndFilterBlocksCachedWithPinning) {
Options options = CurrentOptions();
PinL0IndexAndFilterBlocksTest::CreateTwoLevels(&options, false);
// get base cache values
uint64_t fm = TestGetTickerCount(options, BLOCK_CACHE_FILTER_MISS);
uint64_t fh = TestGetTickerCount(options, BLOCK_CACHE_FILTER_HIT);
uint64_t im = TestGetTickerCount(options, BLOCK_CACHE_INDEX_MISS);
uint64_t ih = TestGetTickerCount(options, BLOCK_CACHE_INDEX_HIT);
std::string value;
// this should be read from L0
// so cache values don't change
value = Get(1, "a2");
ASSERT_EQ(fm, TestGetTickerCount(options, BLOCK_CACHE_FILTER_MISS));
ASSERT_EQ(fh, TestGetTickerCount(options, BLOCK_CACHE_FILTER_HIT));
ASSERT_EQ(im, TestGetTickerCount(options, BLOCK_CACHE_INDEX_MISS));
ASSERT_EQ(ih, TestGetTickerCount(options, BLOCK_CACHE_INDEX_HIT));
// this should be read from L1
// the file is opened, prefetching results in a cache filter miss
// the block is loaded and added to the cache,
// then the get results in a cache hit for L1
// When we have inifinite max_files, there is still cache miss because we have
// reset the block cache
value = Get(1, "a");
ASSERT_EQ(fm + 1, TestGetTickerCount(options, BLOCK_CACHE_FILTER_MISS));
ASSERT_EQ(im + 1, TestGetTickerCount(options, BLOCK_CACHE_INDEX_MISS));
}
TEST_P(PinL0IndexAndFilterBlocksTest, DisablePrefetchingNonL0IndexAndFilter) {
Options options = CurrentOptions();
// This ensures that db does not ref anything in the block cache, so
// EraseUnRefEntries could clear them up.
bool close_afterwards = true;
PinL0IndexAndFilterBlocksTest::CreateTwoLevels(&options, close_afterwards);
// Get base cache values
uint64_t fm = TestGetTickerCount(options, BLOCK_CACHE_FILTER_MISS);
uint64_t fh = TestGetTickerCount(options, BLOCK_CACHE_FILTER_HIT);
uint64_t im = TestGetTickerCount(options, BLOCK_CACHE_INDEX_MISS);
uint64_t ih = TestGetTickerCount(options, BLOCK_CACHE_INDEX_HIT);
if (disallow_preload_) {
// Now we have two files. We narrow the max open files to allow 3 entries
// so that preloading SST files won't happen.
options.max_open_files = 13;
// RocksDB sanitize max open files to at least 20. Modify it back.
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
"SanitizeOptions::AfterChangeMaxOpenFiles", [&](void* arg) {
int* max_open_files = static_cast<int*>(arg);
*max_open_files = 13;
});
}
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
// Reopen database. If max_open_files is set as -1, table readers will be
// preloaded. This will trigger a BlockBasedTable::Open() and prefetch
// L0 index and filter. Level 1's prefetching is disabled in DB::Open()
ASSERT_OK(TryReopenWithColumnFamilies({"default", "pikachu"}, options));
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->DisableProcessing();
if (!disallow_preload_) {
// After reopen, cache miss are increased by one because we read (and only
// read) filter and index on L0
ASSERT_EQ(fm + 1, TestGetTickerCount(options, BLOCK_CACHE_FILTER_MISS));
ASSERT_EQ(fh, TestGetTickerCount(options, BLOCK_CACHE_FILTER_HIT));
ASSERT_EQ(im + 1, TestGetTickerCount(options, BLOCK_CACHE_INDEX_MISS));
ASSERT_EQ(ih, TestGetTickerCount(options, BLOCK_CACHE_INDEX_HIT));
} else {
// If max_open_files is not -1, we do not preload table readers, so there is
// no change.
ASSERT_EQ(fm, TestGetTickerCount(options, BLOCK_CACHE_FILTER_MISS));
ASSERT_EQ(fh, TestGetTickerCount(options, BLOCK_CACHE_FILTER_HIT));
ASSERT_EQ(im, TestGetTickerCount(options, BLOCK_CACHE_INDEX_MISS));
ASSERT_EQ(ih, TestGetTickerCount(options, BLOCK_CACHE_INDEX_HIT));
}
std::string value;
// this should be read from L0
value = Get(1, "a2");
// If max_open_files is -1, we have pinned index and filter in Rep, so there
// will not be changes in index and filter misses or hits. If max_open_files
// is not -1, Get() will open a TableReader and prefetch index and filter.
ASSERT_EQ(fm + 1, TestGetTickerCount(options, BLOCK_CACHE_FILTER_MISS));
ASSERT_EQ(fh, TestGetTickerCount(options, BLOCK_CACHE_FILTER_HIT));
ASSERT_EQ(im + 1, TestGetTickerCount(options, BLOCK_CACHE_INDEX_MISS));
ASSERT_EQ(ih, TestGetTickerCount(options, BLOCK_CACHE_INDEX_HIT));
// this should be read from L1
value = Get(1, "a");
if (!disallow_preload_) {
// In infinite max files case, there's a cache miss in executing Get()
// because index and filter are not prefetched before.
ASSERT_EQ(fm + 2, TestGetTickerCount(options, BLOCK_CACHE_FILTER_MISS));
ASSERT_EQ(fh, TestGetTickerCount(options, BLOCK_CACHE_FILTER_HIT));
ASSERT_EQ(im + 2, TestGetTickerCount(options, BLOCK_CACHE_INDEX_MISS));
ASSERT_EQ(ih, TestGetTickerCount(options, BLOCK_CACHE_INDEX_HIT));
} else {
// In this case, cache miss will be increased by one in
// BlockBasedTable::Open() because this is not in DB::Open() code path so we
// will prefetch L1's index and filter. Cache hit will also be increased by
// one because Get() will read index and filter from the block cache
// prefetched in previous Open() call.
ASSERT_EQ(fm + 2, TestGetTickerCount(options, BLOCK_CACHE_FILTER_MISS));
ASSERT_EQ(fh + 1, TestGetTickerCount(options, BLOCK_CACHE_FILTER_HIT));
ASSERT_EQ(im + 2, TestGetTickerCount(options, BLOCK_CACHE_INDEX_MISS));
ASSERT_EQ(ih + 1, TestGetTickerCount(options, BLOCK_CACHE_INDEX_HIT));
}
// Force a full compaction to one single file. There will be a block
// cache read for both of index and filter. If prefetch doesn't explicitly
// happen, it will happen when verifying the file.
Compact(1, "a", "zzzzz");
ASSERT_OK(dbfull()->TEST_WaitForCompact());
if (!disallow_preload_) {
ASSERT_EQ(fm + 3, TestGetTickerCount(options, BLOCK_CACHE_FILTER_MISS));
ASSERT_EQ(fh, TestGetTickerCount(options, BLOCK_CACHE_FILTER_HIT));
ASSERT_EQ(im + 3, TestGetTickerCount(options, BLOCK_CACHE_INDEX_MISS));
ASSERT_EQ(ih + 2, TestGetTickerCount(options, BLOCK_CACHE_INDEX_HIT));
} else {
ASSERT_EQ(fm + 3, TestGetTickerCount(options, BLOCK_CACHE_FILTER_MISS));
ASSERT_EQ(fh + 1, TestGetTickerCount(options, BLOCK_CACHE_FILTER_HIT));
ASSERT_EQ(im + 3, TestGetTickerCount(options, BLOCK_CACHE_INDEX_MISS));
ASSERT_EQ(ih + 3, TestGetTickerCount(options, BLOCK_CACHE_INDEX_HIT));
}
// Bloom and index hit will happen when a Get() happens.
value = Get(1, "a");
if (!disallow_preload_) {
ASSERT_EQ(fm + 3, TestGetTickerCount(options, BLOCK_CACHE_FILTER_MISS));
ASSERT_EQ(fh + 1, TestGetTickerCount(options, BLOCK_CACHE_FILTER_HIT));
ASSERT_EQ(im + 3, TestGetTickerCount(options, BLOCK_CACHE_INDEX_MISS));
ASSERT_EQ(ih + 3, TestGetTickerCount(options, BLOCK_CACHE_INDEX_HIT));
} else {
ASSERT_EQ(fm + 3, TestGetTickerCount(options, BLOCK_CACHE_FILTER_MISS));
ASSERT_EQ(fh + 2, TestGetTickerCount(options, BLOCK_CACHE_FILTER_HIT));
ASSERT_EQ(im + 3, TestGetTickerCount(options, BLOCK_CACHE_INDEX_MISS));
ASSERT_EQ(ih + 4, TestGetTickerCount(options, BLOCK_CACHE_INDEX_HIT));
}
}
INSTANTIATE_TEST_CASE_P(PinL0IndexAndFilterBlocksTest,
PinL0IndexAndFilterBlocksTest,
::testing::Values(std::make_tuple(true, false),
std::make_tuple(false, false),
std::make_tuple(false, true)));
TEST_F(DBTest2, MaxCompactionBytesTest) {
Options options = CurrentOptions();
options.memtable_factory.reset(test::NewSpecialSkipListFactory(
DBTestBase::kNumKeysByGenerateNewRandomFile));
options.compaction_style = kCompactionStyleLevel;
options.write_buffer_size = 200 << 10;
options.arena_block_size = 4 << 10;
options.level0_file_num_compaction_trigger = 4;
options.num_levels = 4;
options.compression = kNoCompression;
options.max_bytes_for_level_base = 450 << 10;
options.target_file_size_base = 100 << 10;
// Infinite for full compaction.
options.max_compaction_bytes = options.target_file_size_base * 100;
Reopen(options);
Random rnd(301);
for (int num = 0; num < 8; num++) {
GenerateNewRandomFile(&rnd);
}
CompactRangeOptions cro;
cro.bottommost_level_compaction = BottommostLevelCompaction::kForce;
ASSERT_OK(db_->CompactRange(cro, nullptr, nullptr));
ASSERT_EQ("0,0,8", FilesPerLevel(0));
// When compact from Ln -> Ln+1, cut a file if the file overlaps with
// more than three files in Ln+1.
options.max_compaction_bytes = options.target_file_size_base * 3;
Reopen(options);
GenerateNewRandomFile(&rnd);
// Add three more small files that overlap with the previous file
for (int i = 0; i < 3; i++) {
ASSERT_OK(Put("a", "z"));
ASSERT_OK(Flush());
}
ASSERT_OK(dbfull()->TEST_WaitForCompact());
// Output files to L1 are cut to 4 pieces, according to
// options.max_compaction_bytes (300K)
// There are 8 files on L2 (grandparents level), each one is 100K. The first
// file overlaps with a, b which max_compaction_bytes is less than 300K, the
// second one overlaps with d, e, which is also less than 300K. Including any
// extra grandparent file will make the future compaction larger than 300K.
// L1: [ 1 ] [ 2 ] [ 3 ] [ 4 ]
// L2: [a] [b] [c] [d] [e] [f] [g] [h]
ASSERT_EQ("0,4,8", FilesPerLevel(0));
}
static void UniqueIdCallback(void* arg) {
int* result = reinterpret_cast<int*>(arg);
if (*result == -1) {
*result = 0;
}
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->ClearTrace();
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
"GetUniqueIdFromFile:FS_IOC_GETVERSION", UniqueIdCallback);
}
class MockPersistentCache : public PersistentCache {
public:
explicit MockPersistentCache(const bool is_compressed, const size_t max_size)
: is_compressed_(is_compressed), max_size_(max_size) {
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
"GetUniqueIdFromFile:FS_IOC_GETVERSION", UniqueIdCallback);
}
~MockPersistentCache() override {}
PersistentCache::StatsType Stats() override {
return PersistentCache::StatsType();
}
uint64_t NewId() override {
return last_id_.fetch_add(1, std::memory_order_relaxed);
}
Status Insert(const Slice& page_key, const char* data,
const size_t size) override {
MutexLock _(&lock_);
if (size_ > max_size_) {
size_ -= data_.begin()->second.size();
data_.erase(data_.begin());
}
data_.insert(std::make_pair(page_key.ToString(), std::string(data, size)));
size_ += size;
return Status::OK();
}
Status Lookup(const Slice& page_key, std::unique_ptr<char[]>* data,
size_t* size) override {
MutexLock _(&lock_);
auto it = data_.find(page_key.ToString());
if (it == data_.end()) {
return Status::NotFound();
}
assert(page_key.ToString() == it->first);
data->reset(new char[it->second.size()]);
memcpy(data->get(), it->second.c_str(), it->second.size());
*size = it->second.size();
return Status::OK();
}
bool IsCompressed() override { return is_compressed_; }
std::string GetPrintableOptions() const override {
return "MockPersistentCache";
}
port::Mutex lock_;
std::map<std::string, std::string> data_;
const bool is_compressed_ = true;
size_t size_ = 0;
const size_t max_size_ = 10 * 1024; // 10KiB
std::atomic<uint64_t> last_id_{1};
};
#ifdef OS_LINUX
// Make sure that in CPU time perf context counters, Env::NowCPUNanos()
// is used, rather than Env::CPUNanos();
TEST_F(DBTest2, TestPerfContextGetCpuTime) {
// force resizing table cache so table handle is not preloaded so that
// we can measure find_table_nanos during Get().
dbfull()->TEST_table_cache()->SetCapacity(0);
ASSERT_OK(Put("foo", "bar"));
ASSERT_OK(Flush());
env_->now_cpu_count_.store(0);
env_->SetMockSleep();
// NOTE: Presumed unnecessary and removed: resetting mock time in env
// CPU timing is not enabled with kEnableTimeExceptForMutex
SetPerfLevel(PerfLevel::kEnableTimeExceptForMutex);
ASSERT_EQ("bar", Get("foo"));
ASSERT_EQ(0, get_perf_context()->get_cpu_nanos);
ASSERT_EQ(0, env_->now_cpu_count_.load());
constexpr uint64_t kDummyAddonSeconds = uint64_t{1000000};
constexpr uint64_t kDummyAddonNanos = 1000000000U * kDummyAddonSeconds;
// Add time to NowNanos() reading.
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
"TableCache::FindTable:0",
[&](void* /*arg*/) { env_->MockSleepForSeconds(kDummyAddonSeconds); });
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
SetPerfLevel(PerfLevel::kEnableTimeAndCPUTimeExceptForMutex);
ASSERT_EQ("bar", Get("foo"));
ASSERT_GT(env_->now_cpu_count_.load(), 2);
ASSERT_LT(get_perf_context()->get_cpu_nanos, kDummyAddonNanos);
ASSERT_GT(get_perf_context()->find_table_nanos, kDummyAddonNanos);
SetPerfLevel(PerfLevel::kDisable);
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->DisableProcessing();
}
TEST_F(DBTest2, TestPerfContextIterCpuTime) {
DestroyAndReopen(CurrentOptions());
// force resizing table cache so table handle is not preloaded so that
// we can measure find_table_nanos during iteration
dbfull()->TEST_table_cache()->SetCapacity(0);
const size_t kNumEntries = 10;
for (size_t i = 0; i < kNumEntries; ++i) {
ASSERT_OK(Put("k" + std::to_string(i), "v" + std::to_string(i)));
}
ASSERT_OK(Flush());
for (size_t i = 0; i < kNumEntries; ++i) {
ASSERT_EQ("v" + std::to_string(i), Get("k" + std::to_string(i)));
}
std::string last_key = "k" + std::to_string(kNumEntries - 1);
std::string last_value = "v" + std::to_string(kNumEntries - 1);
env_->now_cpu_count_.store(0);
env_->SetMockSleep();
// NOTE: Presumed unnecessary and removed: resetting mock time in env
// CPU timing is not enabled with kEnableTimeExceptForMutex
SetPerfLevel(PerfLevel::kEnableTimeExceptForMutex);
Iterator* iter = db_->NewIterator(ReadOptions());
iter->Seek("k0");
ASSERT_TRUE(iter->Valid());
ASSERT_EQ("v0", iter->value().ToString());
iter->SeekForPrev(last_key);
ASSERT_TRUE(iter->Valid());
iter->SeekToLast();
ASSERT_TRUE(iter->Valid());
ASSERT_EQ(last_value, iter->value().ToString());
iter->SeekToFirst();
ASSERT_TRUE(iter->Valid());
ASSERT_EQ("v0", iter->value().ToString());
ASSERT_EQ(0, get_perf_context()->iter_seek_cpu_nanos);
iter->Next();
ASSERT_TRUE(iter->Valid());
ASSERT_EQ("v1", iter->value().ToString());
ASSERT_EQ(0, get_perf_context()->iter_next_cpu_nanos);
iter->Prev();
ASSERT_TRUE(iter->Valid());
ASSERT_OK(iter->status());
ASSERT_EQ("v0", iter->value().ToString());
ASSERT_EQ(0, get_perf_context()->iter_prev_cpu_nanos);
ASSERT_EQ(0, env_->now_cpu_count_.load());
delete iter;
constexpr uint64_t kDummyAddonSeconds = uint64_t{1000000};
constexpr uint64_t kDummyAddonNanos = 1000000000U * kDummyAddonSeconds;
// Add time to NowNanos() reading.
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
"TableCache::FindTable:0",
[&](void* /*arg*/) { env_->MockSleepForSeconds(kDummyAddonSeconds); });
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
SetPerfLevel(PerfLevel::kEnableTimeAndCPUTimeExceptForMutex);
iter = db_->NewIterator(ReadOptions());
iter->Seek("k0");
ASSERT_TRUE(iter->Valid());
ASSERT_EQ("v0", iter->value().ToString());
iter->SeekForPrev(last_key);
ASSERT_TRUE(iter->Valid());
iter->SeekToLast();
ASSERT_TRUE(iter->Valid());
ASSERT_EQ(last_value, iter->value().ToString());
iter->SeekToFirst();
ASSERT_TRUE(iter->Valid());
ASSERT_EQ("v0", iter->value().ToString());
ASSERT_GT(get_perf_context()->iter_seek_cpu_nanos, 0);
ASSERT_LT(get_perf_context()->iter_seek_cpu_nanos, kDummyAddonNanos);
iter->Next();
ASSERT_TRUE(iter->Valid());
ASSERT_EQ("v1", iter->value().ToString());
ASSERT_GT(get_perf_context()->iter_next_cpu_nanos, 0);
ASSERT_LT(get_perf_context()->iter_next_cpu_nanos, kDummyAddonNanos);
iter->Prev();
ASSERT_TRUE(iter->Valid());
ASSERT_OK(iter->status());
ASSERT_EQ("v0", iter->value().ToString());
ASSERT_GT(get_perf_context()->iter_prev_cpu_nanos, 0);
ASSERT_LT(get_perf_context()->iter_prev_cpu_nanos, kDummyAddonNanos);
ASSERT_GE(env_->now_cpu_count_.load(), 12);
ASSERT_GT(get_perf_context()->find_table_nanos, kDummyAddonNanos);
SetPerfLevel(PerfLevel::kDisable);
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->DisableProcessing();
delete iter;
}
#endif // OS_LINUX
#if !defined OS_SOLARIS
TEST_F(DBTest2, PersistentCache) {
int num_iter = 80;
Options options;
options.write_buffer_size = 64 * 1024; // small write buffer
options.statistics = ROCKSDB_NAMESPACE::CreateDBStatistics();
options = CurrentOptions(options);
auto bsizes = {/*no block cache*/ 0, /*1M*/ 1 * 1024 * 1024};
auto types = {/*compressed*/ 1, /*uncompressed*/ 0};
for (auto bsize : bsizes) {
for (auto type : types) {
BlockBasedTableOptions table_options;
table_options.persistent_cache.reset(
new MockPersistentCache(type, 10 * 1024));
table_options.no_block_cache = true;
table_options.block_cache = bsize ? NewLRUCache(bsize) : nullptr;
options.table_factory.reset(NewBlockBasedTableFactory(table_options));
DestroyAndReopen(options);
CreateAndReopenWithCF({"pikachu"}, options);
// default column family doesn't have block cache
Options no_block_cache_opts;
no_block_cache_opts.statistics = options.statistics;
no_block_cache_opts = CurrentOptions(no_block_cache_opts);
BlockBasedTableOptions table_options_no_bc;
table_options_no_bc.no_block_cache = true;
no_block_cache_opts.table_factory.reset(
NewBlockBasedTableFactory(table_options_no_bc));
ReopenWithColumnFamilies(
{"default", "pikachu"},
std::vector<Options>({no_block_cache_opts, options}));
Random rnd(301);
// Write 8MB (80 values, each 100K)
ASSERT_EQ(NumTableFilesAtLevel(0, 1), 0);
std::vector<std::string> values;
std::string str;
for (int i = 0; i < num_iter; i++) {
if (i % 4 == 0) { // high compression ratio
str = rnd.RandomString(1000);
}
values.push_back(str);
ASSERT_OK(Put(1, Key(i), values[i]));
}
// flush all data from memtable so that reads are from block cache
ASSERT_OK(Flush(1));
for (int i = 0; i < num_iter; i++) {
ASSERT_EQ(Get(1, Key(i)), values[i]);
}
auto hit = options.statistics->getTickerCount(PERSISTENT_CACHE_HIT);
auto miss = options.statistics->getTickerCount(PERSISTENT_CACHE_MISS);
ASSERT_GT(hit, 0);
ASSERT_GT(miss, 0);
}
}
}
#endif // !defined OS_SOLARIS
namespace {
void CountSyncPoint() {
TEST_SYNC_POINT_CALLBACK("DBTest2::MarkedPoint", nullptr /* arg */);
}
} // anonymous namespace
TEST_F(DBTest2, SyncPointMarker) {
std::atomic<int> sync_point_called(0);
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
"DBTest2::MarkedPoint",
[&](void* /*arg*/) { sync_point_called.fetch_add(1); });
// The first dependency enforces Marker can be loaded before MarkedPoint.
// The second checks that thread 1's MarkedPoint should be disabled here.
// Execution order:
// | Thread 1 | Thread 2 |
// | | Marker |
// | MarkedPoint | |
// | Thread1First | |
// | | MarkedPoint |
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->LoadDependencyAndMarkers(
{{"DBTest2::SyncPointMarker:Thread1First", "DBTest2::MarkedPoint"}},
{{"DBTest2::SyncPointMarker:Marker", "DBTest2::MarkedPoint"}});
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
std::function<void()> func1 = [&]() {
CountSyncPoint();
TEST_SYNC_POINT("DBTest2::SyncPointMarker:Thread1First");
};
std::function<void()> func2 = [&]() {
TEST_SYNC_POINT("DBTest2::SyncPointMarker:Marker");
CountSyncPoint();
};
auto thread1 = port::Thread(func1);
auto thread2 = port::Thread(func2);
thread1.join();
thread2.join();
// Callback is only executed once
ASSERT_EQ(sync_point_called.load(), 1);
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->DisableProcessing();
}
size_t GetEncodedEntrySize(size_t key_size, size_t value_size) {
std::string buffer;
PutVarint32(&buffer, static_cast<uint32_t>(0));
PutVarint32(&buffer, static_cast<uint32_t>(key_size));
PutVarint32(&buffer, static_cast<uint32_t>(value_size));
return buffer.size() + key_size + value_size;
}
TEST_F(DBTest2, ReadAmpBitmap) {
Options options = CurrentOptions();
BlockBasedTableOptions bbto;
uint32_t bytes_per_bit[2] = {1, 16};
for (size_t k = 0; k < 2; k++) {
// Disable delta encoding to make it easier to calculate read amplification
bbto.use_delta_encoding = false;
// Huge block cache to make it easier to calculate read amplification
bbto.block_cache = NewLRUCache(1024 * 1024 * 1024);
bbto.read_amp_bytes_per_bit = bytes_per_bit[k];
options.table_factory.reset(NewBlockBasedTableFactory(bbto));
options.statistics = ROCKSDB_NAMESPACE::CreateDBStatistics();
DestroyAndReopen(options);
const size_t kNumEntries = 10000;
Random rnd(301);
for (size_t i = 0; i < kNumEntries; i++) {
ASSERT_OK(Put(Key(static_cast<int>(i)), rnd.RandomString(100)));
}
ASSERT_OK(Flush());
Close();
Reopen(options);
// Read keys/values randomly and verify that reported read amp error
// is less than 2%
uint64_t total_useful_bytes = 0;
std::set<int> read_keys;
std::string value;
for (size_t i = 0; i < kNumEntries * 5; i++) {
int key_idx = rnd.Next() % kNumEntries;
std::string key = Key(key_idx);
ASSERT_OK(db_->Get(ReadOptions(), key, &value));
if (read_keys.find(key_idx) == read_keys.end()) {
auto internal_key = InternalKey(key, 0, ValueType::kTypeValue);
total_useful_bytes +=
GetEncodedEntrySize(internal_key.size(), value.size());
read_keys.insert(key_idx);
}
double expected_read_amp =
static_cast<double>(total_useful_bytes) /
options.statistics->getTickerCount(READ_AMP_TOTAL_READ_BYTES);
double read_amp =
static_cast<double>(options.statistics->getTickerCount(
READ_AMP_ESTIMATE_USEFUL_BYTES)) /
options.statistics->getTickerCount(READ_AMP_TOTAL_READ_BYTES);
double error_pct = fabs(expected_read_amp - read_amp) * 100;
// Error between reported read amp and real read amp should be less than
// 2%
EXPECT_LE(error_pct, 2);
}
// Make sure we read every thing in the DB (which is smaller than our cache)
Iterator* iter = db_->NewIterator(ReadOptions());
for (iter->SeekToFirst(); iter->Valid(); iter->Next()) {
ASSERT_EQ(iter->value().ToString(), Get(iter->key().ToString()));
}
ASSERT_OK(iter->status());
delete iter;
// Read amp is on average 100% since we read all what we loaded in memory
if (k == 0) {
ASSERT_EQ(
options.statistics->getTickerCount(READ_AMP_ESTIMATE_USEFUL_BYTES),
options.statistics->getTickerCount(READ_AMP_TOTAL_READ_BYTES));
} else {
ASSERT_NEAR(
options.statistics->getTickerCount(READ_AMP_ESTIMATE_USEFUL_BYTES) *
1.0f /
options.statistics->getTickerCount(READ_AMP_TOTAL_READ_BYTES),
1, .01);
}
}
}
#ifndef OS_SOLARIS // GetUniqueIdFromFile is not implemented
TEST_F(DBTest2, ReadAmpBitmapLiveInCacheAfterDBClose) {
{
const int kIdBufLen = 100;
char id_buf[kIdBufLen];
Status s = Status::NotSupported();
#ifndef OS_WIN
// You can't open a directory on windows using random access file
std::unique_ptr<RandomAccessFile> file;
s = env_->NewRandomAccessFile(dbname_, &file, EnvOptions());
if (s.ok()) {
if (file->GetUniqueId(id_buf, kIdBufLen) == 0) {
// fs holding db directory doesn't support getting a unique file id,
// this means that running this test will fail because lru_cache will
// load the blocks again regardless of them being already in the cache
return;
}
}
#endif
if (!s.ok()) {
std::unique_ptr<Directory> dir;
ASSERT_OK(env_->NewDirectory(dbname_, &dir));
if (dir->GetUniqueId(id_buf, kIdBufLen) == 0) {
// fs holding db directory doesn't support getting a unique file id,
// this means that running this test will fail because lru_cache will
// load the blocks again regardless of them being already in the cache
return;
}
}
}
uint32_t bytes_per_bit[2] = {1, 16};
for (size_t k = 0; k < 2; k++) {
std::shared_ptr<Cache> lru_cache = NewLRUCache(1024 * 1024 * 1024);
std::shared_ptr<Statistics> stats = ROCKSDB_NAMESPACE::CreateDBStatistics();
Options options = CurrentOptions();
BlockBasedTableOptions bbto;
// Disable delta encoding to make it easier to calculate read amplification
bbto.use_delta_encoding = false;
// Huge block cache to make it easier to calculate read amplification
bbto.block_cache = lru_cache;
bbto.read_amp_bytes_per_bit = bytes_per_bit[k];
options.table_factory.reset(NewBlockBasedTableFactory(bbto));
options.statistics = stats;
DestroyAndReopen(options);
const int kNumEntries = 10000;
Random rnd(301);
for (int i = 0; i < kNumEntries; i++) {
ASSERT_OK(Put(Key(i), rnd.RandomString(100)));
}
ASSERT_OK(Flush());
Close();
Reopen(options);
std::set<int> read_keys;
std::string value;
// Iter1: Read half the DB, Read even keys
// Key(0), Key(2), Key(4), Key(6), Key(8), ...
for (int i = 0; i < kNumEntries; i += 2) {
std::string key = Key(i);
ASSERT_OK(db_->Get(ReadOptions(), key, &value));
if (read_keys.find(i) == read_keys.end()) {
auto internal_key = InternalKey(key, 0, ValueType::kTypeValue);
read_keys.insert(i);
}
}
size_t total_useful_bytes_iter1 =
options.statistics->getTickerCount(READ_AMP_ESTIMATE_USEFUL_BYTES);
size_t total_loaded_bytes_iter1 =
options.statistics->getTickerCount(READ_AMP_TOTAL_READ_BYTES);
Close();
std::shared_ptr<Statistics> new_statistics =
ROCKSDB_NAMESPACE::CreateDBStatistics();
// Destroy old statistics obj that the blocks in lru_cache are pointing to
options.statistics.reset();
// Use the statistics object that we just created
options.statistics = new_statistics;
Reopen(options);
// Iter2: Read half the DB, Read odd keys
// Key(1), Key(3), Key(5), Key(7), Key(9), ...
for (int i = 1; i < kNumEntries; i += 2) {
std::string key = Key(i);
ASSERT_OK(db_->Get(ReadOptions(), key, &value));
if (read_keys.find(i) == read_keys.end()) {
auto internal_key = InternalKey(key, 0, ValueType::kTypeValue);
read_keys.insert(i);
}
}
size_t total_useful_bytes_iter2 =
options.statistics->getTickerCount(READ_AMP_ESTIMATE_USEFUL_BYTES);
size_t total_loaded_bytes_iter2 =
options.statistics->getTickerCount(READ_AMP_TOTAL_READ_BYTES);
// Read amp is on average 100% since we read all what we loaded in memory
if (k == 0) {
ASSERT_EQ(total_useful_bytes_iter1 + total_useful_bytes_iter2,
total_loaded_bytes_iter1 + total_loaded_bytes_iter2);
} else {
ASSERT_NEAR((total_useful_bytes_iter1 + total_useful_bytes_iter2) * 1.0f /
(total_loaded_bytes_iter1 + total_loaded_bytes_iter2),
1, .01);
}
}
}
#endif // !OS_SOLARIS
TEST_F(DBTest2, AutomaticCompactionOverlapManualCompaction) {
Options options = CurrentOptions();
options.num_levels = 3;
options.IncreaseParallelism(20);
DestroyAndReopen(options);
ASSERT_OK(Put(Key(0), "a"));
ASSERT_OK(Put(Key(5), "a"));
ASSERT_OK(Flush());
ASSERT_OK(Put(Key(10), "a"));
ASSERT_OK(Put(Key(15), "a"));
ASSERT_OK(Flush());
CompactRangeOptions cro;
cro.change_level = true;
cro.target_level = 2;
ASSERT_OK(db_->CompactRange(cro, nullptr, nullptr));
auto get_stat = [](std::string level_str, LevelStatType type,
std::map<std::string, std::string> props) {
auto prop_str =
"compaction." + level_str + "." +
InternalStats::compaction_level_stats.at(type).property_name.c_str();
auto prop_item = props.find(prop_str);
return prop_item == props.end() ? 0 : std::stod(prop_item->second);
};
// Trivial move 2 files to L2
ASSERT_EQ("0,0,2", FilesPerLevel());
// Also test that the stats GetMapProperty API reporting the same result
{
std::map<std::string, std::string> prop;
ASSERT_TRUE(dbfull()->GetMapProperty("rocksdb.cfstats", &prop));
ASSERT_EQ(0, get_stat("L0", LevelStatType::NUM_FILES, prop));
ASSERT_EQ(0, get_stat("L1", LevelStatType::NUM_FILES, prop));
ASSERT_EQ(2, get_stat("L2", LevelStatType::NUM_FILES, prop));
ASSERT_EQ(2, get_stat("Sum", LevelStatType::NUM_FILES, prop));
}
// While the compaction is running, we will create 2 new files that
// can fit in L2, these 2 files will be moved to L2 and overlap with
// the running compaction and break the LSM consistency.
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
"CompactionJob::Run():Start", [&](void* /*arg*/) {
ASSERT_OK(
dbfull()->SetOptions({{"level0_file_num_compaction_trigger", "2"},
{"max_bytes_for_level_base", "1"}}));
ASSERT_OK(Put(Key(6), "a"));
ASSERT_OK(Put(Key(7), "a"));
ASSERT_OK(Flush());
ASSERT_OK(Put(Key(8), "a"));
ASSERT_OK(Put(Key(9), "a"));
ASSERT_OK(Flush());
});
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
// Run a manual compaction that will compact the 2 files in L2
// into 1 file in L2
cro.exclusive_manual_compaction = false;
cro.bottommost_level_compaction = BottommostLevelCompaction::kForceOptimized;
ASSERT_OK(db_->CompactRange(cro, nullptr, nullptr));
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->DisableProcessing();
// Test that the stats GetMapProperty API reporting 1 file in L2
{
std::map<std::string, std::string> prop;
ASSERT_TRUE(dbfull()->GetMapProperty("rocksdb.cfstats", &prop));
ASSERT_EQ(1, get_stat("L2", LevelStatType::NUM_FILES, prop));
}
}
TEST_F(DBTest2, ManualCompactionOverlapManualCompaction) {
Options options = CurrentOptions();
options.num_levels = 2;
options.IncreaseParallelism(20);
options.disable_auto_compactions = true;
DestroyAndReopen(options);
ASSERT_OK(Put(Key(0), "a"));
ASSERT_OK(Put(Key(5), "a"));
ASSERT_OK(Flush());
ASSERT_OK(Put(Key(10), "a"));
ASSERT_OK(Put(Key(15), "a"));
ASSERT_OK(Flush());
ASSERT_OK(db_->CompactRange(CompactRangeOptions(), nullptr, nullptr));
// Trivial move 2 files to L1
ASSERT_EQ("0,2", FilesPerLevel());
std::function<void()> bg_manual_compact = [&]() {
std::string k1 = Key(6);
std::string k2 = Key(9);
Slice k1s(k1);
Slice k2s(k2);
CompactRangeOptions cro;
cro.exclusive_manual_compaction = false;
ASSERT_OK(db_->CompactRange(cro, &k1s, &k2s));
};
ROCKSDB_NAMESPACE::port::Thread bg_thread;
// While the compaction is running, we will create 2 new files that
// can fit in L1, these 2 files will be moved to L1 and overlap with
// the running compaction and break the LSM consistency.
std::atomic<bool> flag(false);
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
"CompactionJob::Run():Start", [&](void* /*arg*/) {
if (flag.exchange(true)) {
// We want to make sure to call this callback only once
return;
}
ASSERT_OK(Put(Key(6), "a"));
ASSERT_OK(Put(Key(7), "a"));
ASSERT_OK(Flush());
ASSERT_OK(Put(Key(8), "a"));
ASSERT_OK(Put(Key(9), "a"));
ASSERT_OK(Flush());
// Start a non-exclusive manual compaction in a bg thread
bg_thread = port::Thread(bg_manual_compact);
// This manual compaction conflict with the other manual compaction
// so it should wait until the first compaction finish
env_->SleepForMicroseconds(1000000);
});
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
// Run a manual compaction that will compact the 2 files in L1
// into 1 file in L1
CompactRangeOptions cro;
cro.exclusive_manual_compaction = false;
cro.bottommost_level_compaction = BottommostLevelCompaction::kForceOptimized;
ASSERT_OK(db_->CompactRange(cro, nullptr, nullptr));
bg_thread.join();
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->DisableProcessing();
}
TEST_F(DBTest2, PausingManualCompaction1) {
Options options = CurrentOptions();
options.disable_auto_compactions = true;
options.num_levels = 7;
DestroyAndReopen(options);
Random rnd(301);
// Generate a file containing 10 keys.
for (int i = 0; i < 10; i++) {
ASSERT_OK(Put(Key(i), rnd.RandomString(50)));
}
ASSERT_OK(Flush());
// Generate another file containing same keys
for (int i = 0; i < 10; i++) {
ASSERT_OK(Put(Key(i), rnd.RandomString(50)));
}
ASSERT_OK(Flush());
int manual_compactions_paused = 0;
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
"CompactionJob::Run():PausingManualCompaction:1", [&](void* arg) {
auto canceled = static_cast<std::atomic<bool>*>(arg);
// CompactRange triggers manual compaction and cancel the compaction
// by set *canceled as true
if (canceled != nullptr) {
canceled->store(true, std::memory_order_release);
}
manual_compactions_paused += 1;
});
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
"TestCompactFiles:PausingManualCompaction:3", [&](void* arg) {
auto paused = static_cast<std::atomic<int>*>(arg);
// CompactFiles() relies on manual_compactions_paused to
// determine if thie compaction should be paused or not
ASSERT_EQ(0, paused->load(std::memory_order_acquire));
paused->fetch_add(1, std::memory_order_release);
});
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
std::vector<std::string> files_before_compact, files_after_compact;
// Remember file name before compaction is triggered
std::vector<LiveFileMetaData> files_meta;
dbfull()->GetLiveFilesMetaData(&files_meta);
for (auto file : files_meta) {
files_before_compact.push_back(file.name);
}
// OK, now trigger a manual compaction
ASSERT_TRUE(dbfull()
->CompactRange(CompactRangeOptions(), nullptr, nullptr)
.IsManualCompactionPaused());
// Wait for compactions to get scheduled and stopped
ASSERT_OK(dbfull()->TEST_WaitForCompact());
// Get file names after compaction is stopped
files_meta.clear();
dbfull()->GetLiveFilesMetaData(&files_meta);
for (auto file : files_meta) {
files_after_compact.push_back(file.name);
}
// Like nothing happened
ASSERT_EQ(files_before_compact, files_after_compact);
ASSERT_EQ(manual_compactions_paused, 1);
manual_compactions_paused = 0;
// Now make sure CompactFiles also not run
ASSERT_TRUE(dbfull()
->CompactFiles(ROCKSDB_NAMESPACE::CompactionOptions(),
files_before_compact, 0)
.IsManualCompactionPaused());
// Wait for manual compaction to get scheduled and finish
ASSERT_OK(dbfull()->TEST_WaitForCompact());
files_meta.clear();
files_after_compact.clear();
dbfull()->GetLiveFilesMetaData(&files_meta);
for (auto file : files_meta) {
files_after_compact.push_back(file.name);
}
ASSERT_EQ(files_before_compact, files_after_compact);
// CompactFiles returns at entry point
ASSERT_EQ(manual_compactions_paused, 0);
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->DisableProcessing();
}
// PausingManualCompaction does not affect auto compaction
TEST_F(DBTest2, PausingManualCompaction2) {
Options options = CurrentOptions();
options.level0_file_num_compaction_trigger = 2;
options.disable_auto_compactions = false;
DestroyAndReopen(options);
dbfull()->DisableManualCompaction();
Random rnd(301);
for (int i = 0; i < 2; i++) {
// Generate a file containing 100 keys.
for (int j = 0; j < 100; j++) {
ASSERT_OK(Put(Key(j), rnd.RandomString(50)));
}
ASSERT_OK(Flush());
}
ASSERT_OK(dbfull()->TEST_WaitForCompact());
std::vector<LiveFileMetaData> files_meta;
dbfull()->GetLiveFilesMetaData(&files_meta);
ASSERT_EQ(files_meta.size(), 1);
}
TEST_F(DBTest2, PausingManualCompaction3) {
CompactRangeOptions compact_options;
Options options = CurrentOptions();
options.disable_auto_compactions = true;
options.num_levels = 7;
Random rnd(301);
auto generate_files = [&]() {
for (int i = 0; i < options.num_levels; i++) {
for (int j = 0; j < options.num_levels - i + 1; j++) {
for (int k = 0; k < 1000; k++) {
ASSERT_OK(Put(Key(k + j * 1000), rnd.RandomString(50)));
}
ASSERT_OK(Flush());
}
for (int l = 1; l < options.num_levels - i; l++) {
MoveFilesToLevel(l);
}
}
};
DestroyAndReopen(options);
generate_files();
ASSERT_EQ("2,3,4,5,6,7,8", FilesPerLevel());
int run_manual_compactions = 0;
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
"CompactionJob::Run():PausingManualCompaction:1",
[&](void* /*arg*/) { run_manual_compactions++; });
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
dbfull()->DisableManualCompaction();
ASSERT_TRUE(dbfull()
->CompactRange(compact_options, nullptr, nullptr)
.IsManualCompactionPaused());
ASSERT_OK(dbfull()->TEST_WaitForCompact());
// As manual compaction disabled, not even reach sync point
ASSERT_EQ(run_manual_compactions, 0);
ASSERT_EQ("2,3,4,5,6,7,8", FilesPerLevel());
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->ClearCallBack(
"CompactionJob::Run():PausingManualCompaction:1");
dbfull()->EnableManualCompaction();
ASSERT_OK(dbfull()->CompactRange(compact_options, nullptr, nullptr));
ASSERT_OK(dbfull()->TEST_WaitForCompact());
ASSERT_EQ("0,0,0,0,0,0,2", FilesPerLevel());
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->DisableProcessing();
}
TEST_F(DBTest2, PausingManualCompaction4) {
CompactRangeOptions compact_options;
Options options = CurrentOptions();
options.disable_auto_compactions = true;
options.num_levels = 7;
Random rnd(301);
auto generate_files = [&]() {
for (int i = 0; i < options.num_levels; i++) {
for (int j = 0; j < options.num_levels - i + 1; j++) {
for (int k = 0; k < 1000; k++) {
ASSERT_OK(Put(Key(k + j * 1000), rnd.RandomString(50)));
}
ASSERT_OK(Flush());
}
for (int l = 1; l < options.num_levels - i; l++) {
MoveFilesToLevel(l);
}
}
};
DestroyAndReopen(options);
generate_files();
ASSERT_EQ("2,3,4,5,6,7,8", FilesPerLevel());
int run_manual_compactions = 0;
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
"CompactionJob::Run():PausingManualCompaction:2", [&](void* arg) {
auto canceled = static_cast<std::atomic<bool>*>(arg);
// CompactRange triggers manual compaction and cancel the compaction
// by set *canceled as true
if (canceled != nullptr) {
canceled->store(true, std::memory_order_release);
}
run_manual_compactions++;
});
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
"TestCompactFiles:PausingManualCompaction:3", [&](void* arg) {
auto paused = static_cast<std::atomic<int>*>(arg);
// CompactFiles() relies on manual_compactions_paused to
// determine if thie compaction should be paused or not
ASSERT_EQ(0, paused->load(std::memory_order_acquire));
paused->fetch_add(1, std::memory_order_release);
});
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
ASSERT_TRUE(dbfull()
->CompactRange(compact_options, nullptr, nullptr)
.IsManualCompactionPaused());
ASSERT_OK(dbfull()->TEST_WaitForCompact());
ASSERT_EQ(run_manual_compactions, 1);
ASSERT_EQ("2,3,4,5,6,7,8", FilesPerLevel());
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->ClearCallBack(
"CompactionJob::Run():PausingManualCompaction:2");
ASSERT_OK(dbfull()->CompactRange(compact_options, nullptr, nullptr));
ASSERT_OK(dbfull()->TEST_WaitForCompact());
ASSERT_EQ("0,0,0,0,0,0,2", FilesPerLevel());
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->DisableProcessing();
}
TEST_F(DBTest2, CancelManualCompaction1) {
CompactRangeOptions compact_options;
auto canceledPtr =
std::unique_ptr<std::atomic<bool>>(new std::atomic<bool>{true});
compact_options.canceled = canceledPtr.get();
Options options = CurrentOptions();
options.disable_auto_compactions = true;
options.num_levels = 7;
Random rnd(301);
auto generate_files = [&]() {
for (int i = 0; i < options.num_levels; i++) {
for (int j = 0; j < options.num_levels - i + 1; j++) {
for (int k = 0; k < 1000; k++) {
ASSERT_OK(Put(Key(k + j * 1000), rnd.RandomString(50)));
}
ASSERT_OK(Flush());
}
for (int l = 1; l < options.num_levels - i; l++) {
MoveFilesToLevel(l);
}
}
};
DestroyAndReopen(options);
generate_files();
ASSERT_EQ("2,3,4,5,6,7,8", FilesPerLevel());
int run_manual_compactions = 0;
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
"CompactionJob::Run():PausingManualCompaction:1",
[&](void* /*arg*/) { run_manual_compactions++; });
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
// Setup a callback to disable compactions after a couple of levels are
// compacted
int compactions_run = 0;
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
"DBImpl::RunManualCompaction()::1",
[&](void* /*arg*/) { ++compactions_run; });
ASSERT_TRUE(dbfull()
->CompactRange(compact_options, nullptr, nullptr)
.IsManualCompactionPaused());
ASSERT_OK(dbfull()->TEST_WaitForCompact());
// Since compactions are disabled, we shouldn't start compacting.
// E.g. we should call the compaction function exactly one time.
ASSERT_EQ(compactions_run, 0);
ASSERT_EQ(run_manual_compactions, 0);
ASSERT_EQ("2,3,4,5,6,7,8", FilesPerLevel());
compactions_run = 0;
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->ClearCallBack(
"DBImpl::RunManualCompaction()::1");
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
"DBImpl::RunManualCompaction()::1", [&](void* /*arg*/) {
++compactions_run;
// After 3 compactions disable
if (compactions_run == 3) {
compact_options.canceled->store(true, std::memory_order_release);
}
});
compact_options.canceled->store(false, std::memory_order_release);
ASSERT_TRUE(dbfull()
->CompactRange(compact_options, nullptr, nullptr)
.IsManualCompactionPaused());
ASSERT_OK(dbfull()->TEST_WaitForCompact());
ASSERT_EQ(compactions_run, 3);
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->ClearCallBack(
"DBImpl::RunManualCompaction()::1");
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->ClearCallBack(
"CompactionJob::Run():PausingManualCompaction:1");
// Compactions should work again if we re-enable them..
compact_options.canceled->store(false, std::memory_order_relaxed);
ASSERT_OK(dbfull()->CompactRange(compact_options, nullptr, nullptr));
ASSERT_OK(dbfull()->TEST_WaitForCompact());
ASSERT_EQ("0,0,0,0,0,0,2", FilesPerLevel());
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->DisableProcessing();
}
TEST_F(DBTest2, CancelManualCompaction2) {
CompactRangeOptions compact_options;
auto canceledPtr =
std::unique_ptr<std::atomic<bool>>(new std::atomic<bool>{true});
compact_options.canceled = canceledPtr.get();
compact_options.max_subcompactions = 1;
Options options = CurrentOptions();
options.disable_auto_compactions = true;
options.num_levels = 7;
Random rnd(301);
auto generate_files = [&]() {
for (int i = 0; i < options.num_levels; i++) {
for (int j = 0; j < options.num_levels - i + 1; j++) {
for (int k = 0; k < 1000; k++) {
ASSERT_OK(Put(Key(k + j * 1000), rnd.RandomString(50)));
}
ASSERT_OK(Flush());
}
for (int l = 1; l < options.num_levels - i; l++) {
MoveFilesToLevel(l);
}
}
};
DestroyAndReopen(options);
generate_files();
ASSERT_EQ("2,3,4,5,6,7,8", FilesPerLevel());
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
int compactions_run = 0;
std::atomic<int> kv_compactions{0};
int compactions_stopped_at = 0;
int kv_compactions_stopped_at = 0;
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
"DBImpl::RunManualCompaction()::1", [&](void* /*arg*/) {
++compactions_run;
// After 3 compactions disable
});
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
"CompactionIterator:ProcessKV", [&](void* /*arg*/) {
int kv_compactions_run =
kv_compactions.fetch_add(1, std::memory_order_release);
if (kv_compactions_run == 5) {
compact_options.canceled->store(true, std::memory_order_release);
kv_compactions_stopped_at = kv_compactions_run;
compactions_stopped_at = compactions_run;
}
});
compact_options.canceled->store(false, std::memory_order_release);
ASSERT_TRUE(dbfull()
->CompactRange(compact_options, nullptr, nullptr)
.IsManualCompactionPaused());
ASSERT_OK(dbfull()->TEST_WaitForCompact());
// NOTE: as we set compact_options.max_subcompacitons = 1, and store true to
// the canceled variable from the single compacting thread (via callback),
// this value is deterministically kv_compactions_stopped_at + 1.
ASSERT_EQ(kv_compactions, kv_compactions_stopped_at + 1);
ASSERT_EQ(compactions_run, compactions_stopped_at);
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->ClearCallBack(
"CompactionIterator::ProcessKV");
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->ClearCallBack(
"DBImpl::RunManualCompaction()::1");
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->ClearCallBack(
"CompactionJob::Run():PausingManualCompaction:1");
// Compactions should work again if we re-enable them..
compact_options.canceled->store(false, std::memory_order_relaxed);
ASSERT_OK(dbfull()->CompactRange(compact_options, nullptr, nullptr));
ASSERT_OK(dbfull()->TEST_WaitForCompact());
ASSERT_EQ("0,0,0,0,0,0,2", FilesPerLevel());
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->DisableProcessing();
}
class CancelCompactionListener : public EventListener {
public:
CancelCompactionListener()
: num_compaction_started_(0), num_compaction_ended_(0) {}
void OnCompactionBegin(DB* /*db*/, const CompactionJobInfo& ci) override {
ASSERT_EQ(ci.cf_name, "default");
ASSERT_EQ(ci.base_input_level, 0);
num_compaction_started_++;
}
void OnCompactionCompleted(DB* /*db*/, const CompactionJobInfo& ci) override {
ASSERT_EQ(ci.cf_name, "default");
ASSERT_EQ(ci.base_input_level, 0);
ASSERT_EQ(ci.status.code(), code_);
ASSERT_EQ(ci.status.subcode(), subcode_);
num_compaction_ended_++;
}
std::atomic<size_t> num_compaction_started_;
std::atomic<size_t> num_compaction_ended_;
Status::Code code_;
Status::SubCode subcode_;
};
TEST_F(DBTest2, CancelManualCompactionWithListener) {
CompactRangeOptions compact_options;
auto canceledPtr =
std::unique_ptr<std::atomic<bool>>(new std::atomic<bool>{true});
compact_options.canceled = canceledPtr.get();
compact_options.max_subcompactions = 1;
Options options = CurrentOptions();
options.disable_auto_compactions = true;
CancelCompactionListener* listener = new CancelCompactionListener();
options.listeners.emplace_back(listener);
DestroyAndReopen(options);
Random rnd(301);
for (int i = 0; i < 10; i++) {
for (int j = 0; j < 10; j++) {
ASSERT_OK(Put(Key(i + j * 10), rnd.RandomString(50)));
}
ASSERT_OK(Flush());
}
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
"CompactionIterator:ProcessKV", [&](void* /*arg*/) {
compact_options.canceled->store(true, std::memory_order_release);
});
int running_compaction = 0;
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
"CompactionJob::FinishCompactionOutputFile1",
[&](void* /*arg*/) { running_compaction++; });
// Case I: 1 Notify begin compaction, 2 Set *canceled as true to disable
// manual compaction in the callback function, 3 Compaction not run,
// 4 Notify compaction end.
listener->code_ = Status::kIncomplete;
listener->subcode_ = Status::SubCode::kManualCompactionPaused;
compact_options.canceled->store(false, std::memory_order_release);
ASSERT_TRUE(dbfull()
->CompactRange(compact_options, nullptr, nullptr)
.IsManualCompactionPaused());
ASSERT_OK(dbfull()->TEST_WaitForCompact());
ASSERT_GT(listener->num_compaction_started_, 0);
ASSERT_EQ(listener->num_compaction_started_, listener->num_compaction_ended_);
ASSERT_EQ(running_compaction, 0);
listener->num_compaction_started_ = 0;
listener->num_compaction_ended_ = 0;
// Case II: 1 Set *canceled as true in the callback function to disable manual
// compaction, 2 Notify begin compaction (return without notifying), 3 Notify
// compaction end (return without notifying).
ASSERT_TRUE(dbfull()
->CompactRange(compact_options, nullptr, nullptr)
.IsManualCompactionPaused());
ASSERT_OK(dbfull()->TEST_WaitForCompact());
ASSERT_EQ(listener->num_compaction_started_, 0);
ASSERT_EQ(listener->num_compaction_started_, listener->num_compaction_ended_);
ASSERT_EQ(running_compaction, 0);
// Case III: 1 Notify begin compaction, 2 Compaction in between
// 3. Set *canceled as true in the callback function to disable manual
// compaction, 4 Notify compaction end.
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->ClearCallBack(
"CompactionIterator:ProcessKV");
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
"CompactionJob::Run:BeforeVerify", [&](void* /*arg*/) {
compact_options.canceled->store(true, std::memory_order_release);
});
listener->code_ = Status::kOk;
listener->subcode_ = Status::SubCode::kNone;
compact_options.canceled->store(false, std::memory_order_release);
ASSERT_OK(dbfull()->CompactRange(compact_options, nullptr, nullptr));
ASSERT_OK(dbfull()->TEST_WaitForCompact());
ASSERT_GT(listener->num_compaction_started_, 0);
ASSERT_EQ(listener->num_compaction_started_, listener->num_compaction_ended_);
// Compaction job will succeed.
ASSERT_GT(running_compaction, 0);
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->ClearAllCallBacks();
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->DisableProcessing();
}
TEST_F(DBTest2, CompactionOnBottomPriorityWithListener) {
int num_levels = 3;
const int kNumFilesTrigger = 4;
Options options = CurrentOptions();
env_->SetBackgroundThreads(0, Env::Priority::HIGH);
env_->SetBackgroundThreads(0, Env::Priority::LOW);
env_->SetBackgroundThreads(1, Env::Priority::BOTTOM);
options.env = env_;
options.compaction_style = kCompactionStyleUniversal;
options.num_levels = num_levels;
options.write_buffer_size = 100 << 10; // 100KB
options.target_file_size_base = 32 << 10; // 32KB
options.level0_file_num_compaction_trigger = kNumFilesTrigger;
// Trigger compaction if size amplification exceeds 110%
options.compaction_options_universal.max_size_amplification_percent = 110;
CancelCompactionListener* listener = new CancelCompactionListener();
options.listeners.emplace_back(listener);
DestroyAndReopen(options);
int num_bottom_thread_compaction_scheduled = 0;
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
"DBImpl::BackgroundCompaction:ForwardToBottomPriPool",
[&](void* /*arg*/) { num_bottom_thread_compaction_scheduled++; });
int num_compaction_jobs = 0;
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
"CompactionJob::Run():End",
[&](void* /*arg*/) { num_compaction_jobs++; });
listener->code_ = Status::kOk;
listener->subcode_ = Status::SubCode::kNone;
Random rnd(301);
for (int i = 0; i < 1; ++i) {
for (int num = 0; num < kNumFilesTrigger; num++) {
int key_idx = 0;
GenerateNewFile(&rnd, &key_idx, true /* no_wait */);
// use no_wait above because that one waits for flush and compaction. We
// don't want to wait for compaction because the full compaction is
// intentionally blocked while more files are flushed.
ASSERT_OK(dbfull()->TEST_WaitForFlushMemTable());
}
}
ASSERT_OK(dbfull()->TEST_WaitForCompact());
ASSERT_GT(num_bottom_thread_compaction_scheduled, 0);
ASSERT_EQ(num_compaction_jobs, 1);
ASSERT_GT(listener->num_compaction_started_, 0);
ASSERT_EQ(listener->num_compaction_started_, listener->num_compaction_ended_);
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->ClearAllCallBacks();
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->DisableProcessing();
}
TEST_F(DBTest2, OptimizeForPointLookup) {
Options options = CurrentOptions();
Close();
options.OptimizeForPointLookup(2);
ASSERT_OK(DB::Open(options, dbname_, &db_));
ASSERT_OK(Put("foo", "v1"));
ASSERT_EQ("v1", Get("foo"));
ASSERT_OK(Flush());
ASSERT_EQ("v1", Get("foo"));
}
TEST_F(DBTest2, OptimizeForSmallDB) {
Options options = CurrentOptions();
Close();
options.OptimizeForSmallDb();
// Find the cache object
ASSERT_TRUE(options.table_factory->IsInstanceOf(
TableFactory::kBlockBasedTableName()));
auto table_options =
options.table_factory->GetOptions<BlockBasedTableOptions>();
ASSERT_TRUE(table_options != nullptr);
std::shared_ptr<Cache> cache = table_options->block_cache;
ASSERT_EQ(0, cache->GetUsage());
ASSERT_OK(DB::Open(options, dbname_, &db_));
ASSERT_OK(Put("foo", "v1"));
// memtable size is costed to the block cache
ASSERT_NE(0, cache->GetUsage());
ASSERT_EQ("v1", Get("foo"));
ASSERT_OK(Flush());
size_t prev_size = cache->GetUsage();
// Remember block cache size, so that we can find that
// it is filled after Get().
// Use pinnable slice so that it can ping the block so that
// when we check the size it is not evicted.
PinnableSlice value;
ASSERT_OK(db_->Get(ReadOptions(), db_->DefaultColumnFamily(), "foo", &value));
ASSERT_GT(cache->GetUsage(), prev_size);
value.Reset();
}
TEST_F(DBTest2, IterRaceFlush1) {
ASSERT_OK(Put("foo", "v1"));
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->LoadDependency(
{{"DBImpl::NewIterator:1", "DBTest2::IterRaceFlush:1"},
{"DBTest2::IterRaceFlush:2", "DBImpl::NewIterator:2"}});
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
ROCKSDB_NAMESPACE::port::Thread t1([&] {
TEST_SYNC_POINT("DBTest2::IterRaceFlush:1");
ASSERT_OK(Put("foo", "v2"));
ASSERT_OK(Flush());
TEST_SYNC_POINT("DBTest2::IterRaceFlush:2");
});
// iterator is created after the first Put(), and its snapshot sequence is
// assigned after second Put(), so it must see v2.
{
std::unique_ptr<Iterator> it(db_->NewIterator(ReadOptions()));
it->Seek("foo");
ASSERT_TRUE(it->Valid());
ASSERT_OK(it->status());
ASSERT_EQ("foo", it->key().ToString());
ASSERT_EQ("v2", it->value().ToString());
}
t1.join();
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->DisableProcessing();
}
TEST_F(DBTest2, IterRaceFlush2) {
ASSERT_OK(Put("foo", "v1"));
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->LoadDependency(
{{"DBImpl::NewIterator:3", "DBTest2::IterRaceFlush2:1"},
{"DBTest2::IterRaceFlush2:2", "DBImpl::NewIterator:4"}});
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
ROCKSDB_NAMESPACE::port::Thread t1([&] {
TEST_SYNC_POINT("DBTest2::IterRaceFlush2:1");
ASSERT_OK(Put("foo", "v2"));
ASSERT_OK(Flush());
TEST_SYNC_POINT("DBTest2::IterRaceFlush2:2");
});
// iterator is created after the first Put(), and its snapshot sequence is
// assigned before second Put(), thus it must see v1.
{
std::unique_ptr<Iterator> it(db_->NewIterator(ReadOptions()));
it->Seek("foo");
ASSERT_TRUE(it->Valid());
ASSERT_OK(it->status());
ASSERT_EQ("foo", it->key().ToString());
ASSERT_EQ("v1", it->value().ToString());
}
t1.join();
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->DisableProcessing();
}
TEST_F(DBTest2, IterRefreshRaceFlush) {
ASSERT_OK(Put("foo", "v1"));
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->LoadDependency(
{{"ArenaWrappedDBIter::Refresh:1", "DBTest2::IterRefreshRaceFlush:1"},
{"DBTest2::IterRefreshRaceFlush:2", "ArenaWrappedDBIter::Refresh:2"}});
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
ROCKSDB_NAMESPACE::port::Thread t1([&] {
TEST_SYNC_POINT("DBTest2::IterRefreshRaceFlush:1");
ASSERT_OK(Put("foo", "v2"));
ASSERT_OK(Flush());
TEST_SYNC_POINT("DBTest2::IterRefreshRaceFlush:2");
});
// iterator is refreshed after the first Put(), and its sequence number is
// assigned after second Put(), thus it must see v2.
{
std::unique_ptr<Iterator> it(db_->NewIterator(ReadOptions()));
ASSERT_OK(it->status());
ASSERT_OK(it->Refresh());
it->Seek("foo");
ASSERT_TRUE(it->Valid());
ASSERT_OK(it->status());
ASSERT_EQ("foo", it->key().ToString());
ASSERT_EQ("v2", it->value().ToString());
}
t1.join();
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->DisableProcessing();
}
TEST_F(DBTest2, GetRaceFlush1) {
ASSERT_OK(Put("foo", "v1"));
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->LoadDependency(
{{"DBImpl::GetImpl:1", "DBTest2::GetRaceFlush:1"},
{"DBTest2::GetRaceFlush:2", "DBImpl::GetImpl:2"}});
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
ROCKSDB_NAMESPACE::port::Thread t1([&] {
TEST_SYNC_POINT("DBTest2::GetRaceFlush:1");
ASSERT_OK(Put("foo", "v2"));
ASSERT_OK(Flush());
TEST_SYNC_POINT("DBTest2::GetRaceFlush:2");
});
// Get() is issued after the first Put(), so it should see either
// "v1" or "v2".
ASSERT_NE("NOT_FOUND", Get("foo"));
t1.join();
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->DisableProcessing();
}
TEST_F(DBTest2, GetRaceFlush2) {
ASSERT_OK(Put("foo", "v1"));
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->LoadDependency(
{{"DBImpl::GetImpl:3", "DBTest2::GetRaceFlush:1"},
{"DBTest2::GetRaceFlush:2", "DBImpl::GetImpl:4"}});
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
port::Thread t1([&] {
TEST_SYNC_POINT("DBTest2::GetRaceFlush:1");
ASSERT_OK(Put("foo", "v2"));
ASSERT_OK(Flush());
TEST_SYNC_POINT("DBTest2::GetRaceFlush:2");
});
// Get() is issued after the first Put(), so it should see either
// "v1" or "v2".
ASSERT_NE("NOT_FOUND", Get("foo"));
t1.join();
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->DisableProcessing();
}
TEST_F(DBTest2, DirectIO) {
if (!IsDirectIOSupported()) {
return;
}
Options options = CurrentOptions();
options.use_direct_reads = options.use_direct_io_for_flush_and_compaction =
true;
options.allow_mmap_reads = options.allow_mmap_writes = false;
DestroyAndReopen(options);
ASSERT_OK(Put(Key(0), "a"));
ASSERT_OK(Put(Key(5), "a"));
ASSERT_OK(Flush());
ASSERT_OK(Put(Key(10), "a"));
ASSERT_OK(Put(Key(15), "a"));
ASSERT_OK(Flush());
ASSERT_OK(db_->CompactRange(CompactRangeOptions(), nullptr, nullptr));
Reopen(options);
}
TEST_F(DBTest2, MemtableOnlyIterator) {
Options options = CurrentOptions();
CreateAndReopenWithCF({"pikachu"}, options);
ASSERT_OK(Put(1, "foo", "first"));
ASSERT_OK(Put(1, "bar", "second"));
ReadOptions ropt;
ropt.read_tier = kMemtableTier;
std::string value;
Iterator* it = nullptr;
// Before flushing
// point lookups
ASSERT_OK(db_->Get(ropt, handles_[1], "foo", &value));
ASSERT_EQ("first", value);
ASSERT_OK(db_->Get(ropt, handles_[1], "bar", &value));
ASSERT_EQ("second", value);
// Memtable-only iterator (read_tier=kMemtableTier); data not flushed yet.
it = db_->NewIterator(ropt, handles_[1]);
int count = 0;
for (it->SeekToFirst(); it->Valid(); it->Next()) {
ASSERT_TRUE(it->Valid());
count++;
}
ASSERT_TRUE(!it->Valid());
ASSERT_OK(it->status());
ASSERT_EQ(2, count);
delete it;
ASSERT_OK(Flush(1));
// After flushing
// point lookups
ASSERT_OK(db_->Get(ropt, handles_[1], "foo", &value));
ASSERT_EQ("first", value);
ASSERT_OK(db_->Get(ropt, handles_[1], "bar", &value));
ASSERT_EQ("second", value);
// nothing should be returned using memtable-only iterator after flushing.
it = db_->NewIterator(ropt, handles_[1]);
ASSERT_OK(it->status());
count = 0;
for (it->SeekToFirst(); it->Valid(); it->Next()) {
ASSERT_TRUE(it->Valid());
count++;
}
ASSERT_TRUE(!it->Valid());
ASSERT_EQ(0, count);
ASSERT_OK(it->status());
delete it;
// Add a key to memtable
ASSERT_OK(Put(1, "foobar", "third"));
it = db_->NewIterator(ropt, handles_[1]);
ASSERT_OK(it->status());
count = 0;
for (it->SeekToFirst(); it->Valid(); it->Next()) {
ASSERT_TRUE(it->Valid());
ASSERT_EQ("foobar", it->key().ToString());
ASSERT_EQ("third", it->value().ToString());
count++;
}
ASSERT_TRUE(!it->Valid());
ASSERT_EQ(1, count);
ASSERT_OK(it->status());
delete it;
}
TEST_F(DBTest2, LowPriWrite) {
Options options = CurrentOptions();
// Compaction pressure should trigger since 6 files
options.level0_file_num_compaction_trigger = 4;
options.level0_slowdown_writes_trigger = 12;
options.level0_stop_writes_trigger = 30;
options.delayed_write_rate = 8 * 1024 * 1024;
Reopen(options);
std::atomic<int> rate_limit_count(0);
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
"GenericRateLimiter::Request:1", [&](void* arg) {
rate_limit_count.fetch_add(1);
int64_t* rate_bytes_per_sec = static_cast<int64_t*>(arg);
ASSERT_EQ(1024 * 1024, *rate_bytes_per_sec);
});
// Block compaction
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->LoadDependency({
{"DBTest.LowPriWrite:0", "DBImpl::BGWorkCompaction"},
});
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
WriteOptions wo;
for (int i = 0; i < 6; i++) {
wo.low_pri = false;
ASSERT_OK(Put("", "", wo));
wo.low_pri = true;
ASSERT_OK(Put("", "", wo));
ASSERT_OK(Flush());
}
ASSERT_EQ(0, rate_limit_count.load());
wo.low_pri = true;
ASSERT_OK(Put("", "", wo));
ASSERT_EQ(1, rate_limit_count.load());
wo.low_pri = false;
ASSERT_OK(Put("", "", wo));
ASSERT_EQ(1, rate_limit_count.load());
wo.low_pri = true;
std::string big_value = std::string(1 * 1024 * 1024, 'x');
ASSERT_OK(Put("", big_value, wo));
ASSERT_LT(1, rate_limit_count.load());
// Reset
rate_limit_count = 0;
wo.low_pri = false;
ASSERT_OK(Put("", big_value, wo));
ASSERT_EQ(0, rate_limit_count.load());
TEST_SYNC_POINT("DBTest.LowPriWrite:0");
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->DisableProcessing();
ASSERT_OK(dbfull()->TEST_WaitForCompact());
wo.low_pri = true;
ASSERT_OK(Put("", "", wo));
ASSERT_EQ(0, rate_limit_count.load());
wo.low_pri = false;
ASSERT_OK(Put("", "", wo));
ASSERT_EQ(0, rate_limit_count.load());
}
TEST_F(DBTest2, RateLimitedCompactionReads) {
// compaction input has 512KB data
const int kNumKeysPerFile = 128;
const int kBytesPerKey = 1024;
const int kNumL0Files = 4;
for (int compaction_readahead_size : {0, 32 << 10}) {
for (auto use_direct_io : {false, true}) {
if (use_direct_io && !IsDirectIOSupported()) {
continue;
}
Options options = CurrentOptions();
options.compaction_readahead_size = compaction_readahead_size;
options.compression = kNoCompression;
options.level0_file_num_compaction_trigger = kNumL0Files;
options.memtable_factory.reset(
test::NewSpecialSkipListFactory(kNumKeysPerFile));
// takes roughly one second, split into 100 x 10ms intervals. Each
// interval permits 5.12KB, which is smaller than the block size, so this
// test exercises the code for chunking reads.
options.rate_limiter.reset(NewGenericRateLimiter(
static_cast<int64_t>(kNumL0Files * kNumKeysPerFile *
kBytesPerKey) /* rate_bytes_per_sec */,
10 * 1000 /* refill_period_us */, 10 /* fairness */,
RateLimiter::Mode::kReadsOnly));
options.use_direct_reads =
options.use_direct_io_for_flush_and_compaction = use_direct_io;
BlockBasedTableOptions bbto;
bbto.block_size = 16384;
bbto.no_block_cache = true;
options.table_factory.reset(NewBlockBasedTableFactory(bbto));
DestroyAndReopen(options);
for (int i = 0; i < kNumL0Files; ++i) {
for (int j = 0; j <= kNumKeysPerFile; ++j) {
ASSERT_OK(Put(Key(j), DummyString(kBytesPerKey)));
}
ASSERT_OK(dbfull()->TEST_WaitForFlushMemTable());
if (i + 1 < kNumL0Files) {
ASSERT_EQ(i + 1, NumTableFilesAtLevel(0));
}
}
ASSERT_OK(dbfull()->TEST_WaitForCompact());
ASSERT_EQ(0, NumTableFilesAtLevel(0));
// should be slightly above 512KB due to non-data blocks read. Arbitrarily
// chose 1MB as the upper bound on the total bytes read.
size_t rate_limited_bytes = static_cast<size_t>(
options.rate_limiter->GetTotalBytesThrough(Env::IO_TOTAL));
// The charges can exist for `IO_LOW` and `IO_USER` priorities.
size_t rate_limited_bytes_by_pri =
options.rate_limiter->GetTotalBytesThrough(Env::IO_LOW) +
options.rate_limiter->GetTotalBytesThrough(Env::IO_USER);
ASSERT_EQ(rate_limited_bytes,
static_cast<size_t>(rate_limited_bytes_by_pri));
// Include the explicit prefetch of the footer in direct I/O case.
size_t direct_io_extra = use_direct_io ? 512 * 1024 : 0;
ASSERT_GE(
rate_limited_bytes,
static_cast<size_t>(kNumKeysPerFile * kBytesPerKey * kNumL0Files));
ASSERT_LT(
rate_limited_bytes,
static_cast<size_t>(2 * kNumKeysPerFile * kBytesPerKey * kNumL0Files +
direct_io_extra));
Iterator* iter = db_->NewIterator(ReadOptions());
ASSERT_OK(iter->status());
for (iter->SeekToFirst(); iter->Valid(); iter->Next()) {
ASSERT_EQ(iter->value().ToString(), DummyString(kBytesPerKey));
}
delete iter;
// bytes read for user iterator shouldn't count against the rate limit.
rate_limited_bytes_by_pri =
options.rate_limiter->GetTotalBytesThrough(Env::IO_LOW) +
options.rate_limiter->GetTotalBytesThrough(Env::IO_USER);
ASSERT_EQ(rate_limited_bytes,
static_cast<size_t>(rate_limited_bytes_by_pri));
}
}
}
// Make sure DB can be reopen with reduced number of levels, given no file
// is on levels higher than the new num_levels.
TEST_F(DBTest2, ReduceLevel) {
Options options;
options.env = env_;
options.disable_auto_compactions = true;
options.num_levels = 7;
Reopen(options);
ASSERT_OK(Put("foo", "bar"));
ASSERT_OK(Flush());
MoveFilesToLevel(6);
ASSERT_EQ("0,0,0,0,0,0,1", FilesPerLevel());
CompactRangeOptions compact_options;
compact_options.change_level = true;
compact_options.target_level = 1;
ASSERT_OK(dbfull()->CompactRange(compact_options, nullptr, nullptr));
ASSERT_EQ("0,1", FilesPerLevel());
options.num_levels = 3;
Reopen(options);
ASSERT_EQ("0,1", FilesPerLevel());
}
// Test that ReadCallback is actually used in both memtbale and sst tables
TEST_F(DBTest2, ReadCallbackTest) {
Options options;
options.disable_auto_compactions = true;
options.num_levels = 7;
options.env = env_;
Reopen(options);
std::vector<const Snapshot*> snapshots;
// Try to create a db with multiple layers and a memtable
const std::string key = "foo";
const std::string value = "bar";
// This test assumes that the seq start with 1 and increased by 1 after each
// write batch of size 1. If that behavior changes, the test needs to be
// updated as well.
// TODO(myabandeh): update this test to use the seq number that is returned by
// the DB instead of assuming what seq the DB used.
int i = 1;
for (; i < 10; i++) {
ASSERT_OK(Put(key, value + std::to_string(i)));
// Take a snapshot to avoid the value being removed during compaction
auto snapshot = dbfull()->GetSnapshot();
snapshots.push_back(snapshot);
}
ASSERT_OK(Flush());
for (; i < 20; i++) {
ASSERT_OK(Put(key, value + std::to_string(i)));
// Take a snapshot to avoid the value being removed during compaction
auto snapshot = dbfull()->GetSnapshot();
snapshots.push_back(snapshot);
}
ASSERT_OK(Flush());
MoveFilesToLevel(6);
ASSERT_EQ("0,0,0,0,0,0,2", FilesPerLevel());
for (; i < 30; i++) {
ASSERT_OK(Put(key, value + std::to_string(i)));
auto snapshot = dbfull()->GetSnapshot();
snapshots.push_back(snapshot);
}
ASSERT_OK(Flush());
ASSERT_EQ("1,0,0,0,0,0,2", FilesPerLevel());
// And also add some values to the memtable
for (; i < 40; i++) {
ASSERT_OK(Put(key, value + std::to_string(i)));
auto snapshot = dbfull()->GetSnapshot();
snapshots.push_back(snapshot);
}
class TestReadCallback : public ReadCallback {
public:
explicit TestReadCallback(SequenceNumber snapshot)
: ReadCallback(snapshot), snapshot_(snapshot) {}
bool IsVisibleFullCheck(SequenceNumber seq) override {
return seq <= snapshot_;
}
private:
SequenceNumber snapshot_;
};
for (int seq = 1; seq < i; seq++) {
PinnableSlice pinnable_val;
ReadOptions roptions;
TestReadCallback callback(seq);
bool dont_care = true;
DBImpl::GetImplOptions get_impl_options;
get_impl_options.column_family = dbfull()->DefaultColumnFamily();
get_impl_options.value = &pinnable_val;
get_impl_options.value_found = &dont_care;
get_impl_options.callback = &callback;
Status s = dbfull()->GetImpl(roptions, key, get_impl_options);
ASSERT_TRUE(s.ok());
// Assuming that after each Put the DB increased seq by one, the value and
// seq number must be equal since we also inc value by 1 after each Put.
ASSERT_EQ(value + std::to_string(seq), pinnable_val.ToString());
}
for (auto snapshot : snapshots) {
dbfull()->ReleaseSnapshot(snapshot);
}
}
TEST_F(DBTest2, LiveFilesOmitObsoleteFiles) {
// Regression test for race condition where an obsolete file is returned to
// user as a "live file" but then deleted, all while file deletions are
// disabled.
//
// It happened like this:
//
// 1. [flush thread] Log file "x.log" found by FindObsoleteFiles
// 2. [user thread] DisableFileDeletions, GetSortedWalFiles are called and the
// latter returned "x.log"
// 3. [flush thread] PurgeObsoleteFiles deleted "x.log"
// 4. [user thread] Reading "x.log" failed
//
// Unfortunately the only regression test I can come up with involves sleep.
// We cannot set SyncPoints to repro since, once the fix is applied, the
// SyncPoints would cause a deadlock as the repro's sequence of events is now
// prohibited.
//
// Instead, if we sleep for a second between Find and Purge, and ensure the
// read attempt happens after purge, then the sequence of events will almost
// certainly happen on the old code.
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->LoadDependency({
{"DBImpl::BackgroundCallFlush:FilesFound",
"DBTest2::LiveFilesOmitObsoleteFiles:FlushTriggered"},
{"DBImpl::PurgeObsoleteFiles:End",
"DBTest2::LiveFilesOmitObsoleteFiles:LiveFilesCaptured"},
});
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
"DBImpl::PurgeObsoleteFiles:Begin",
[&](void* /*arg*/) { env_->SleepForMicroseconds(1000000); });
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
ASSERT_OK(Put("key", "val"));
FlushOptions flush_opts;
flush_opts.wait = false;
ASSERT_OK(db_->Flush(flush_opts));
TEST_SYNC_POINT("DBTest2::LiveFilesOmitObsoleteFiles:FlushTriggered");
ASSERT_OK(db_->DisableFileDeletions());
VectorLogPtr log_files;
ASSERT_OK(db_->GetSortedWalFiles(log_files));
TEST_SYNC_POINT("DBTest2::LiveFilesOmitObsoleteFiles:LiveFilesCaptured");
for (const auto& log_file : log_files) {
ASSERT_OK(env_->FileExists(LogFileName(dbname_, log_file->LogNumber())));
}
ASSERT_OK(db_->EnableFileDeletions(/*force=*/false));
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->DisableProcessing();
}
TEST_F(DBTest2, TestNumPread) {
Options options = CurrentOptions();
bool prefetch_supported =
test::IsPrefetchSupported(env_->GetFileSystem(), dbname_);
// disable block cache
BlockBasedTableOptions table_options;
table_options.no_block_cache = true;
options.table_factory.reset(NewBlockBasedTableFactory(table_options));
Reopen(options);
env_->count_random_reads_ = true;
env_->random_file_open_counter_.store(0);
ASSERT_OK(Put("bar", "foo"));
ASSERT_OK(Put("foo", "bar"));
ASSERT_OK(Flush());
if (prefetch_supported) {
// After flush, we'll open the file and read footer, meta block,
// property block and index block.
ASSERT_EQ(4, env_->random_read_counter_.Read());
} else {
// With prefetch not supported, we will do a single read into a buffer
ASSERT_EQ(1, env_->random_read_counter_.Read());
}
ASSERT_EQ(1, env_->random_file_open_counter_.load());
// One pread per a normal data block read
env_->random_file_open_counter_.store(0);
env_->random_read_counter_.Reset();
ASSERT_EQ("bar", Get("foo"));
ASSERT_EQ(1, env_->random_read_counter_.Read());
// All files are already opened.
ASSERT_EQ(0, env_->random_file_open_counter_.load());
env_->random_file_open_counter_.store(0);
env_->random_read_counter_.Reset();
ASSERT_OK(Put("bar2", "foo2"));
ASSERT_OK(Put("foo2", "bar2"));
ASSERT_OK(Flush());
if (prefetch_supported) {
// After flush, we'll open the file and read footer, meta block,
// property block and index block.
ASSERT_EQ(4, env_->random_read_counter_.Read());
} else {
// With prefetch not supported, we will do a single read into a buffer
ASSERT_EQ(1, env_->random_read_counter_.Read());
}
ASSERT_EQ(1, env_->random_file_open_counter_.load());
env_->random_file_open_counter_.store(0);
env_->random_read_counter_.Reset();
ASSERT_OK(db_->CompactRange(CompactRangeOptions(), nullptr, nullptr));
if (prefetch_supported) {
// Compaction needs two input blocks, which requires 2 preads, and
// generate a new SST file which needs 4 preads (footer, meta block,
// property block and index block). In total 6.
ASSERT_EQ(6, env_->random_read_counter_.Read());
} else {
// With prefetch off, compaction needs two input blocks,
// followed by a single buffered read. In total 3.
ASSERT_EQ(3, env_->random_read_counter_.Read());
}
// All compaction input files should have already been opened.
ASSERT_EQ(1, env_->random_file_open_counter_.load());
// One pread per a normal data block read
env_->random_file_open_counter_.store(0);
env_->random_read_counter_.Reset();
ASSERT_EQ("foo2", Get("bar2"));
ASSERT_EQ(1, env_->random_read_counter_.Read());
// SST files are already opened.
ASSERT_EQ(0, env_->random_file_open_counter_.load());
}
class TraceExecutionResultHandler : public TraceRecordResult::Handler {
public:
TraceExecutionResultHandler() {}
~TraceExecutionResultHandler() override {}
virtual Status Handle(const StatusOnlyTraceExecutionResult& result) override {
if (result.GetStartTimestamp() > result.GetEndTimestamp()) {
return Status::InvalidArgument("Invalid timestamps.");
}
result.GetStatus().PermitUncheckedError();
switch (result.GetTraceType()) {
case kTraceWrite: {
total_latency_ += result.GetLatency();
cnt_++;
writes_++;
break;
}
default:
return Status::Corruption("Type mismatch.");
}
return Status::OK();
}
virtual Status Handle(
const SingleValueTraceExecutionResult& result) override {
if (result.GetStartTimestamp() > result.GetEndTimestamp()) {
return Status::InvalidArgument("Invalid timestamps.");
}
result.GetStatus().PermitUncheckedError();
switch (result.GetTraceType()) {
case kTraceGet: {
total_latency_ += result.GetLatency();
cnt_++;
gets_++;
break;
}
default:
return Status::Corruption("Type mismatch.");
}
return Status::OK();
}
virtual Status Handle(
const MultiValuesTraceExecutionResult& result) override {
if (result.GetStartTimestamp() > result.GetEndTimestamp()) {
return Status::InvalidArgument("Invalid timestamps.");
}
for (const Status& s : result.GetMultiStatus()) {
s.PermitUncheckedError();
}
switch (result.GetTraceType()) {
case kTraceMultiGet: {
total_latency_ += result.GetLatency();
cnt_++;
multigets_++;
break;
}
default:
return Status::Corruption("Type mismatch.");
}
return Status::OK();
}
virtual Status Handle(const IteratorTraceExecutionResult& result) override {
if (result.GetStartTimestamp() > result.GetEndTimestamp()) {
return Status::InvalidArgument("Invalid timestamps.");
}
result.GetStatus().PermitUncheckedError();
switch (result.GetTraceType()) {
case kTraceIteratorSeek:
case kTraceIteratorSeekForPrev: {
total_latency_ += result.GetLatency();
cnt_++;
seeks_++;
break;
}
default:
return Status::Corruption("Type mismatch.");
}
return Status::OK();
}
void Reset() {
total_latency_ = 0;
cnt_ = 0;
writes_ = 0;
gets_ = 0;
seeks_ = 0;
multigets_ = 0;
}
double GetAvgLatency() const {
return cnt_ == 0 ? 0.0 : 1.0 * total_latency_ / cnt_;
}
int GetNumWrites() const { return writes_; }
int GetNumGets() const { return gets_; }
int GetNumIterSeeks() const { return seeks_; }
int GetNumMultiGets() const { return multigets_; }
private:
std::atomic<uint64_t> total_latency_{0};
std::atomic<uint32_t> cnt_{0};
std::atomic<int> writes_{0};
std::atomic<int> gets_{0};
std::atomic<int> seeks_{0};
std::atomic<int> multigets_{0};
};
TEST_F(DBTest2, TraceAndReplay) {
Options options = CurrentOptions();
options.merge_operator = MergeOperators::CreatePutOperator();
ReadOptions ro;
WriteOptions wo;
TraceOptions trace_opts;
EnvOptions env_opts;
CreateAndReopenWithCF({"pikachu"}, options);
Random rnd(301);
Iterator* single_iter = nullptr;
ASSERT_TRUE(db_->EndTrace().IsIOError());
std::string trace_filename = dbname_ + "/rocksdb.trace";
std::unique_ptr<TraceWriter> trace_writer;
ASSERT_OK(NewFileTraceWriter(env_, env_opts, trace_filename, &trace_writer));
ASSERT_OK(db_->StartTrace(trace_opts, std::move(trace_writer)));
// 5 Writes
ASSERT_OK(Put(0, "a", "1"));
ASSERT_OK(Merge(0, "b", "2"));
ASSERT_OK(Delete(0, "c"));
ASSERT_OK(SingleDelete(0, "d"));
ASSERT_OK(db_->DeleteRange(wo, dbfull()->DefaultColumnFamily(), "e", "f"));
// 6th Write
WriteBatch batch;
ASSERT_OK(batch.Put("f", "11"));
ASSERT_OK(batch.Merge("g", "12"));
ASSERT_OK(batch.Delete("h"));
ASSERT_OK(batch.SingleDelete("i"));
ASSERT_OK(batch.DeleteRange("j", "k"));
ASSERT_OK(db_->Write(wo, &batch));
// 2 Seek(ForPrev)s
single_iter = db_->NewIterator(ro);
single_iter->Seek("f"); // Seek 1
single_iter->SeekForPrev("g");
ASSERT_OK(single_iter->status());
delete single_iter;
// 2 Gets
ASSERT_EQ("1", Get(0, "a"));
ASSERT_EQ("12", Get(0, "g"));
// 7th and 8th Write, 3rd Get
ASSERT_OK(Put(1, "foo", "bar"));
ASSERT_OK(Put(1, "rocksdb", "rocks"));
ASSERT_EQ("NOT_FOUND", Get(1, "leveldb"));
// Total Write x 8, Get x 3, Seek x 2.
ASSERT_OK(db_->EndTrace());
// These should not get into the trace file as it is after EndTrace.
ASSERT_OK(Put("hello", "world"));
ASSERT_OK(Merge("foo", "bar"));
// Open another db, replay, and verify the data
std::string value;
std::string dbname2 = test::PerThreadDBPath(env_, "/db_replay");
ASSERT_OK(DestroyDB(dbname2, options));
// Using a different name than db2, to pacify infer's use-after-lifetime
// warnings (http://fbinfer.com).
DB* db2_init = nullptr;
options.create_if_missing = true;
ASSERT_OK(DB::Open(options, dbname2, &db2_init));
ColumnFamilyHandle* cf;
ASSERT_OK(
db2_init->CreateColumnFamily(ColumnFamilyOptions(), "pikachu", &cf));
delete cf;
delete db2_init;
DB* db2 = nullptr;
std::vector<ColumnFamilyDescriptor> column_families;
ColumnFamilyOptions cf_options;
cf_options.merge_operator = MergeOperators::CreatePutOperator();
column_families.push_back(ColumnFamilyDescriptor("default", cf_options));
column_families.push_back(
ColumnFamilyDescriptor("pikachu", ColumnFamilyOptions()));
std::vector<ColumnFamilyHandle*> handles;
DBOptions db_opts;
db_opts.env = env_;
ASSERT_OK(DB::Open(db_opts, dbname2, column_families, &handles, &db2));
env_->SleepForMicroseconds(100);
// Verify that the keys don't already exist
ASSERT_TRUE(db2->Get(ro, handles[0], "a", &value).IsNotFound());
ASSERT_TRUE(db2->Get(ro, handles[0], "g", &value).IsNotFound());
std::unique_ptr<TraceReader> trace_reader;
ASSERT_OK(NewFileTraceReader(env_, env_opts, trace_filename, &trace_reader));
std::unique_ptr<Replayer> replayer;
ASSERT_OK(
db2->NewDefaultReplayer(handles, std::move(trace_reader), &replayer));
TraceExecutionResultHandler res_handler;
std::function<void(Status, std::unique_ptr<TraceRecordResult> &&)> res_cb =
[&res_handler](Status exec_s, std::unique_ptr<TraceRecordResult>&& res) {
ASSERT_TRUE(exec_s.ok() || exec_s.IsNotSupported());
if (res != nullptr) {
ASSERT_OK(res->Accept(&res_handler));
res.reset();
}
};
// Unprepared replay should fail with Status::Incomplete()
ASSERT_TRUE(replayer->Replay(ReplayOptions(), nullptr).IsIncomplete());
ASSERT_OK(replayer->Prepare());
// Ok to repeatedly Prepare().
ASSERT_OK(replayer->Prepare());
// Replay using 1 thread, 1x speed.
ASSERT_OK(replayer->Replay(ReplayOptions(1, 1.0), res_cb));
ASSERT_GE(res_handler.GetAvgLatency(), 0.0);
ASSERT_EQ(res_handler.GetNumWrites(), 8);
ASSERT_EQ(res_handler.GetNumGets(), 3);
ASSERT_EQ(res_handler.GetNumIterSeeks(), 2);
ASSERT_EQ(res_handler.GetNumMultiGets(), 0);
res_handler.Reset();
ASSERT_OK(db2->Get(ro, handles[0], "a", &value));
ASSERT_EQ("1", value);
ASSERT_OK(db2->Get(ro, handles[0], "g", &value));
ASSERT_EQ("12", value);
ASSERT_TRUE(db2->Get(ro, handles[0], "hello", &value).IsNotFound());
ASSERT_TRUE(db2->Get(ro, handles[0], "world", &value).IsNotFound());
ASSERT_OK(db2->Get(ro, handles[1], "foo", &value));
ASSERT_EQ("bar", value);
ASSERT_OK(db2->Get(ro, handles[1], "rocksdb", &value));
ASSERT_EQ("rocks", value);
// Re-replay should fail with Status::Incomplete() if Prepare() was not
// called. Currently we don't distinguish between unprepared and trace end.
ASSERT_TRUE(replayer->Replay(ReplayOptions(), nullptr).IsIncomplete());
// Re-replay using 2 threads, 2x speed.
ASSERT_OK(replayer->Prepare());
ASSERT_OK(replayer->Replay(ReplayOptions(2, 2.0), res_cb));
ASSERT_GE(res_handler.GetAvgLatency(), 0.0);
ASSERT_EQ(res_handler.GetNumWrites(), 8);
ASSERT_EQ(res_handler.GetNumGets(), 3);
ASSERT_EQ(res_handler.GetNumIterSeeks(), 2);
ASSERT_EQ(res_handler.GetNumMultiGets(), 0);
res_handler.Reset();
// Re-replay using 2 threads, 1/2 speed.
ASSERT_OK(replayer->Prepare());
ASSERT_OK(replayer->Replay(ReplayOptions(2, 0.5), res_cb));
ASSERT_GE(res_handler.GetAvgLatency(), 0.0);
ASSERT_EQ(res_handler.GetNumWrites(), 8);
ASSERT_EQ(res_handler.GetNumGets(), 3);
ASSERT_EQ(res_handler.GetNumIterSeeks(), 2);
ASSERT_EQ(res_handler.GetNumMultiGets(), 0);
res_handler.Reset();
replayer.reset();
for (auto handle : handles) {
delete handle;
}
delete db2;
ASSERT_OK(DestroyDB(dbname2, options));
}
TEST_F(DBTest2, TraceAndManualReplay) {
Options options = CurrentOptions();
options.merge_operator = MergeOperators::CreatePutOperator();
ReadOptions ro;
WriteOptions wo;
TraceOptions trace_opts;
EnvOptions env_opts;
CreateAndReopenWithCF({"pikachu"}, options);
Random rnd(301);
Iterator* single_iter = nullptr;
ASSERT_TRUE(db_->EndTrace().IsIOError());
std::string trace_filename = dbname_ + "/rocksdb.trace";
std::unique_ptr<TraceWriter> trace_writer;
ASSERT_OK(NewFileTraceWriter(env_, env_opts, trace_filename, &trace_writer));
ASSERT_OK(db_->StartTrace(trace_opts, std::move(trace_writer)));
ASSERT_OK(Put(0, "a", "1"));
ASSERT_OK(Merge(0, "b", "2"));
ASSERT_OK(Delete(0, "c"));
ASSERT_OK(SingleDelete(0, "d"));
ASSERT_OK(db_->DeleteRange(wo, dbfull()->DefaultColumnFamily(), "e", "f"));
WriteBatch batch;
ASSERT_OK(batch.Put("f", "11"));
ASSERT_OK(batch.Merge("g", "12"));
ASSERT_OK(batch.Delete("h"));
ASSERT_OK(batch.SingleDelete("i"));
ASSERT_OK(batch.DeleteRange("j", "k"));
ASSERT_OK(db_->Write(wo, &batch));
single_iter = db_->NewIterator(ro);
single_iter->Seek("f");
single_iter->SeekForPrev("g");
ASSERT_OK(single_iter->status());
delete single_iter;
// Write some sequenced keys for testing lower/upper bounds of iterator.
batch.Clear();
ASSERT_OK(batch.Put("iter-0", "iter-0"));
ASSERT_OK(batch.Put("iter-1", "iter-1"));
ASSERT_OK(batch.Put("iter-2", "iter-2"));
ASSERT_OK(batch.Put("iter-3", "iter-3"));
ASSERT_OK(batch.Put("iter-4", "iter-4"));
ASSERT_OK(db_->Write(wo, &batch));
ReadOptions bounded_ro = ro;
Slice lower_bound("iter-1");
Slice upper_bound("iter-3");
bounded_ro.iterate_lower_bound = &lower_bound;
bounded_ro.iterate_upper_bound = &upper_bound;
single_iter = db_->NewIterator(bounded_ro);
single_iter->Seek("iter-0");
ASSERT_EQ(single_iter->key().ToString(), "iter-1");
single_iter->Seek("iter-2");
ASSERT_EQ(single_iter->key().ToString(), "iter-2");
single_iter->Seek("iter-4");
ASSERT_FALSE(single_iter->Valid());
single_iter->SeekForPrev("iter-0");
ASSERT_FALSE(single_iter->Valid());
single_iter->SeekForPrev("iter-2");
ASSERT_EQ(single_iter->key().ToString(), "iter-2");
single_iter->SeekForPrev("iter-4");
ASSERT_EQ(single_iter->key().ToString(), "iter-2");
ASSERT_OK(single_iter->status());
delete single_iter;
ASSERT_EQ("1", Get(0, "a"));
ASSERT_EQ("12", Get(0, "g"));
ASSERT_OK(Put(1, "foo", "bar"));
ASSERT_OK(Put(1, "rocksdb", "rocks"));
ASSERT_EQ("NOT_FOUND", Get(1, "leveldb"));
// Same as TraceAndReplay, Write x 8, Get x 3, Seek x 2.
// Plus 1 WriteBatch for iterator with lower/upper bounds, and 6
// Seek(ForPrev)s.
// Total Write x 9, Get x 3, Seek x 8
ASSERT_OK(db_->EndTrace());
// These should not get into the trace file as it is after EndTrace.
ASSERT_OK(Put("hello", "world"));
ASSERT_OK(Merge("foo", "bar"));
// Open another db, replay, and verify the data
std::string value;
std::string dbname2 = test::PerThreadDBPath(env_, "/db_replay");
ASSERT_OK(DestroyDB(dbname2, options));
// Using a different name than db2, to pacify infer's use-after-lifetime
// warnings (http://fbinfer.com).
DB* db2_init = nullptr;
options.create_if_missing = true;
ASSERT_OK(DB::Open(options, dbname2, &db2_init));
ColumnFamilyHandle* cf;
ASSERT_OK(
db2_init->CreateColumnFamily(ColumnFamilyOptions(), "pikachu", &cf));
delete cf;
delete db2_init;
DB* db2 = nullptr;
std::vector<ColumnFamilyDescriptor> column_families;
ColumnFamilyOptions cf_options;
cf_options.merge_operator = MergeOperators::CreatePutOperator();
column_families.push_back(ColumnFamilyDescriptor("default", cf_options));
column_families.push_back(
ColumnFamilyDescriptor("pikachu", ColumnFamilyOptions()));
std::vector<ColumnFamilyHandle*> handles;
DBOptions db_opts;
db_opts.env = env_;
ASSERT_OK(DB::Open(db_opts, dbname2, column_families, &handles, &db2));
env_->SleepForMicroseconds(100);
// Verify that the keys don't already exist
ASSERT_TRUE(db2->Get(ro, handles[0], "a", &value).IsNotFound());
ASSERT_TRUE(db2->Get(ro, handles[0], "g", &value).IsNotFound());
std::unique_ptr<TraceReader> trace_reader;
ASSERT_OK(NewFileTraceReader(env_, env_opts, trace_filename, &trace_reader));
std::unique_ptr<Replayer> replayer;
ASSERT_OK(
db2->NewDefaultReplayer(handles, std::move(trace_reader), &replayer));
TraceExecutionResultHandler res_handler;
// Manual replay for 2 times. The 2nd checks if the replay can restart.
std::unique_ptr<TraceRecord> record;
std::unique_ptr<TraceRecordResult> result;
for (int i = 0; i < 2; i++) {
// Next should fail if unprepared.
ASSERT_TRUE(replayer->Next(nullptr).IsIncomplete());
ASSERT_OK(replayer->Prepare());
Status s = Status::OK();
// Looping until trace end.
while (s.ok()) {
s = replayer->Next(&record);
// Skip unsupported operations.
if (s.IsNotSupported()) {
continue;
}
if (s.ok()) {
ASSERT_OK(replayer->Execute(record, &result));
if (result != nullptr) {
ASSERT_OK(result->Accept(&res_handler));
if (record->GetTraceType() == kTraceIteratorSeek ||
record->GetTraceType() == kTraceIteratorSeekForPrev) {
IteratorSeekQueryTraceRecord* iter_rec =
dynamic_cast<IteratorSeekQueryTraceRecord*>(record.get());
IteratorTraceExecutionResult* iter_res =
dynamic_cast<IteratorTraceExecutionResult*>(result.get());
// Check if lower/upper bounds are correctly saved and decoded.
std::string lower_str = iter_rec->GetLowerBound().ToString();
std::string upper_str = iter_rec->GetUpperBound().ToString();
std::string iter_key = iter_res->GetKey().ToString();
std::string iter_value = iter_res->GetValue().ToString();
if (!lower_str.empty() && !upper_str.empty()) {
ASSERT_EQ(lower_str, "iter-1");
ASSERT_EQ(upper_str, "iter-3");
if (iter_res->GetValid()) {
// If iterator is valid, then lower_bound <= key < upper_bound.
ASSERT_GE(iter_key, lower_str);
ASSERT_LT(iter_key, upper_str);
} else {
// If iterator is invalid, then
// key < lower_bound or key >= upper_bound.
ASSERT_TRUE(iter_key < lower_str || iter_key >= upper_str);
}
}
// If iterator is invalid, the key and value should be empty.
if (!iter_res->GetValid()) {
ASSERT_TRUE(iter_key.empty());
ASSERT_TRUE(iter_value.empty());
}
}
result.reset();
}
}
}
// Status::Incomplete() will be returned when manually reading the trace
// end, or Prepare() was not called.
ASSERT_TRUE(s.IsIncomplete());
ASSERT_TRUE(replayer->Next(nullptr).IsIncomplete());
ASSERT_GE(res_handler.GetAvgLatency(), 0.0);
ASSERT_EQ(res_handler.GetNumWrites(), 9);
ASSERT_EQ(res_handler.GetNumGets(), 3);
ASSERT_EQ(res_handler.GetNumIterSeeks(), 8);
ASSERT_EQ(res_handler.GetNumMultiGets(), 0);
res_handler.Reset();
}
ASSERT_OK(db2->Get(ro, handles[0], "a", &value));
ASSERT_EQ("1", value);
ASSERT_OK(db2->Get(ro, handles[0], "g", &value));
ASSERT_EQ("12", value);
ASSERT_TRUE(db2->Get(ro, handles[0], "hello", &value).IsNotFound());
ASSERT_TRUE(db2->Get(ro, handles[0], "world", &value).IsNotFound());
ASSERT_OK(db2->Get(ro, handles[1], "foo", &value));
ASSERT_EQ("bar", value);
ASSERT_OK(db2->Get(ro, handles[1], "rocksdb", &value));
ASSERT_EQ("rocks", value);
// Test execution of artificially created TraceRecords.
uint64_t fake_ts = 1U;
// Write
batch.Clear();
ASSERT_OK(batch.Put("trace-record-write1", "write1"));
ASSERT_OK(batch.Put("trace-record-write2", "write2"));
record.reset(new WriteQueryTraceRecord(batch.Data(), fake_ts++));
ASSERT_OK(replayer->Execute(record, &result));
ASSERT_TRUE(result != nullptr);
ASSERT_OK(result->Accept(&res_handler)); // Write x 1
ASSERT_OK(db2->Get(ro, handles[0], "trace-record-write1", &value));
ASSERT_EQ("write1", value);
ASSERT_OK(db2->Get(ro, handles[0], "trace-record-write2", &value));
ASSERT_EQ("write2", value);
ASSERT_GE(res_handler.GetAvgLatency(), 0.0);
ASSERT_EQ(res_handler.GetNumWrites(), 1);
ASSERT_EQ(res_handler.GetNumGets(), 0);
ASSERT_EQ(res_handler.GetNumIterSeeks(), 0);
ASSERT_EQ(res_handler.GetNumMultiGets(), 0);
res_handler.Reset();
// Get related
// Get an existing key.
record.reset(new GetQueryTraceRecord(handles[0]->GetID(),
"trace-record-write1", fake_ts++));
ASSERT_OK(replayer->Execute(record, &result));
ASSERT_TRUE(result != nullptr);
ASSERT_OK(result->Accept(&res_handler)); // Get x 1
// Get an non-existing key, should still return Status::OK().
record.reset(new GetQueryTraceRecord(handles[0]->GetID(), "trace-record-get",
fake_ts++));
ASSERT_OK(replayer->Execute(record, &result));
ASSERT_TRUE(result != nullptr);
ASSERT_OK(result->Accept(&res_handler)); // Get x 2
// Get from an invalid (non-existing) cf_id.
uint32_t invalid_cf_id = handles[1]->GetID() + 1;
record.reset(new GetQueryTraceRecord(invalid_cf_id, "whatever", fake_ts++));
ASSERT_TRUE(replayer->Execute(record, &result).IsCorruption());
ASSERT_TRUE(result == nullptr);
ASSERT_GE(res_handler.GetAvgLatency(), 0.0);
ASSERT_EQ(res_handler.GetNumWrites(), 0);
ASSERT_EQ(res_handler.GetNumGets(), 2);
ASSERT_EQ(res_handler.GetNumIterSeeks(), 0);
ASSERT_EQ(res_handler.GetNumMultiGets(), 0);
res_handler.Reset();
// Iteration related
for (IteratorSeekQueryTraceRecord::SeekType seekType :
{IteratorSeekQueryTraceRecord::kSeek,
IteratorSeekQueryTraceRecord::kSeekForPrev}) {
// Seek to an existing key.
record.reset(new IteratorSeekQueryTraceRecord(
seekType, handles[0]->GetID(), "trace-record-write1", fake_ts++));
ASSERT_OK(replayer->Execute(record, &result));
ASSERT_TRUE(result != nullptr);
ASSERT_OK(result->Accept(&res_handler)); // Seek x 1 in one iteration
// Seek to an non-existing key, should still return Status::OK().
record.reset(new IteratorSeekQueryTraceRecord(
seekType, handles[0]->GetID(), "trace-record-get", fake_ts++));
ASSERT_OK(replayer->Execute(record, &result));
ASSERT_TRUE(result != nullptr);
ASSERT_OK(result->Accept(&res_handler)); // Seek x 2 in one iteration
// Seek from an invalid cf_id.
record.reset(new IteratorSeekQueryTraceRecord(seekType, invalid_cf_id,
"whatever", fake_ts++));
ASSERT_TRUE(replayer->Execute(record, &result).IsCorruption());
ASSERT_TRUE(result == nullptr);
}
ASSERT_GE(res_handler.GetAvgLatency(), 0.0);
ASSERT_EQ(res_handler.GetNumWrites(), 0);
ASSERT_EQ(res_handler.GetNumGets(), 0);
ASSERT_EQ(res_handler.GetNumIterSeeks(), 4); // Seek x 2 in two iterations
ASSERT_EQ(res_handler.GetNumMultiGets(), 0);
res_handler.Reset();
// MultiGet related
// Get existing keys.
record.reset(new MultiGetQueryTraceRecord(
std::vector<uint32_t>({handles[0]->GetID(), handles[1]->GetID()}),
std::vector<std::string>({"a", "foo"}), fake_ts++));
ASSERT_OK(replayer->Execute(record, &result));
ASSERT_TRUE(result != nullptr);
ASSERT_OK(result->Accept(&res_handler)); // MultiGet x 1
// Get all non-existing keys, should still return Status::OK().
record.reset(new MultiGetQueryTraceRecord(
std::vector<uint32_t>({handles[0]->GetID(), handles[1]->GetID()}),
std::vector<std::string>({"no1", "no2"}), fake_ts++));
ASSERT_OK(replayer->Execute(record, &result));
ASSERT_TRUE(result != nullptr);
ASSERT_OK(result->Accept(&res_handler)); // MultiGet x 2
// Get mixed of existing and non-existing keys, should still return
// Status::OK().
record.reset(new MultiGetQueryTraceRecord(
std::vector<uint32_t>({handles[0]->GetID(), handles[1]->GetID()}),
std::vector<std::string>({"a", "no2"}), fake_ts++));
ASSERT_OK(replayer->Execute(record, &result));
ASSERT_TRUE(result != nullptr);
MultiValuesTraceExecutionResult* mvr =
dynamic_cast<MultiValuesTraceExecutionResult*>(result.get());
ASSERT_TRUE(mvr != nullptr);
ASSERT_OK(mvr->GetMultiStatus()[0]);
ASSERT_TRUE(mvr->GetMultiStatus()[1].IsNotFound());
ASSERT_EQ(mvr->GetValues()[0], "1");
ASSERT_EQ(mvr->GetValues()[1], "");
ASSERT_OK(result->Accept(&res_handler)); // MultiGet x 3
// Get from an invalid (non-existing) cf_id.
record.reset(new MultiGetQueryTraceRecord(
std::vector<uint32_t>(
{handles[0]->GetID(), handles[1]->GetID(), invalid_cf_id}),
std::vector<std::string>({"a", "foo", "whatever"}), fake_ts++));
ASSERT_TRUE(replayer->Execute(record, &result).IsCorruption());
ASSERT_TRUE(result == nullptr);
// Empty MultiGet
record.reset(new MultiGetQueryTraceRecord(
std::vector<uint32_t>(), std::vector<std::string>(), fake_ts++));
ASSERT_TRUE(replayer->Execute(record, &result).IsInvalidArgument());
ASSERT_TRUE(result == nullptr);
// MultiGet size mismatch
record.reset(new MultiGetQueryTraceRecord(
std::vector<uint32_t>({handles[0]->GetID(), handles[1]->GetID()}),
std::vector<std::string>({"a"}), fake_ts++));
ASSERT_TRUE(replayer->Execute(record, &result).IsInvalidArgument());
ASSERT_TRUE(result == nullptr);
ASSERT_GE(res_handler.GetAvgLatency(), 0.0);
ASSERT_EQ(res_handler.GetNumWrites(), 0);
ASSERT_EQ(res_handler.GetNumGets(), 0);
ASSERT_EQ(res_handler.GetNumIterSeeks(), 0);
ASSERT_EQ(res_handler.GetNumMultiGets(), 3);
res_handler.Reset();
replayer.reset();
for (auto handle : handles) {
delete handle;
}
delete db2;
ASSERT_OK(DestroyDB(dbname2, options));
}
TEST_F(DBTest2, TraceWithLimit) {
Options options = CurrentOptions();
options.merge_operator = MergeOperators::CreatePutOperator();
ReadOptions ro;
WriteOptions wo;
TraceOptions trace_opts;
EnvOptions env_opts;
CreateAndReopenWithCF({"pikachu"}, options);
Random rnd(301);
// test the max trace file size options
trace_opts.max_trace_file_size = 5;
std::string trace_filename = dbname_ + "/rocksdb.trace1";
std::unique_ptr<TraceWriter> trace_writer;
ASSERT_OK(NewFileTraceWriter(env_, env_opts, trace_filename, &trace_writer));
ASSERT_OK(db_->StartTrace(trace_opts, std::move(trace_writer)));
ASSERT_OK(Put(0, "a", "1"));
ASSERT_OK(Put(0, "b", "1"));
ASSERT_OK(Put(0, "c", "1"));
ASSERT_OK(db_->EndTrace());
std::string dbname2 = test::PerThreadDBPath(env_, "/db_replay2");
std::string value;
ASSERT_OK(DestroyDB(dbname2, options));
// Using a different name than db2, to pacify infer's use-after-lifetime
// warnings (http://fbinfer.com).
DB* db2_init = nullptr;
options.create_if_missing = true;
ASSERT_OK(DB::Open(options, dbname2, &db2_init));
ColumnFamilyHandle* cf;
ASSERT_OK(
db2_init->CreateColumnFamily(ColumnFamilyOptions(), "pikachu", &cf));
delete cf;
delete db2_init;
DB* db2 = nullptr;
std::vector<ColumnFamilyDescriptor> column_families;
ColumnFamilyOptions cf_options;
cf_options.merge_operator = MergeOperators::CreatePutOperator();
column_families.push_back(ColumnFamilyDescriptor("default", cf_options));
column_families.push_back(
ColumnFamilyDescriptor("pikachu", ColumnFamilyOptions()));
std::vector<ColumnFamilyHandle*> handles;
DBOptions db_opts;
db_opts.env = env_;
ASSERT_OK(DB::Open(db_opts, dbname2, column_families, &handles, &db2));
env_->SleepForMicroseconds(100);
// Verify that the keys don't already exist
ASSERT_TRUE(db2->Get(ro, handles[0], "a", &value).IsNotFound());
ASSERT_TRUE(db2->Get(ro, handles[0], "b", &value).IsNotFound());
ASSERT_TRUE(db2->Get(ro, handles[0], "c", &value).IsNotFound());
std::unique_ptr<TraceReader> trace_reader;
ASSERT_OK(NewFileTraceReader(env_, env_opts, trace_filename, &trace_reader));
std::unique_ptr<Replayer> replayer;
ASSERT_OK(
db2->NewDefaultReplayer(handles, std::move(trace_reader), &replayer));
ASSERT_OK(replayer->Prepare());
ASSERT_OK(replayer->Replay(ReplayOptions(), nullptr));
replayer.reset();
ASSERT_TRUE(db2->Get(ro, handles[0], "a", &value).IsNotFound());
ASSERT_TRUE(db2->Get(ro, handles[0], "b", &value).IsNotFound());
ASSERT_TRUE(db2->Get(ro, handles[0], "c", &value).IsNotFound());
for (auto handle : handles) {
delete handle;
}
delete db2;
ASSERT_OK(DestroyDB(dbname2, options));
}
TEST_F(DBTest2, TraceWithSampling) {
Options options = CurrentOptions();
ReadOptions ro;
WriteOptions wo;
TraceOptions trace_opts;
EnvOptions env_opts;
CreateAndReopenWithCF({"pikachu"}, options);
Random rnd(301);
// test the trace file sampling options
trace_opts.sampling_frequency = 2;
std::string trace_filename = dbname_ + "/rocksdb.trace_sampling";
std::unique_ptr<TraceWriter> trace_writer;
ASSERT_OK(NewFileTraceWriter(env_, env_opts, trace_filename, &trace_writer));
ASSERT_OK(db_->StartTrace(trace_opts, std::move(trace_writer)));
ASSERT_OK(Put(0, "a", "1"));
ASSERT_OK(Put(0, "b", "2"));
ASSERT_OK(Put(0, "c", "3"));
ASSERT_OK(Put(0, "d", "4"));
ASSERT_OK(Put(0, "e", "5"));
ASSERT_OK(db_->EndTrace());
std::string dbname2 = test::PerThreadDBPath(env_, "/db_replay_sampling");
std::string value;
ASSERT_OK(DestroyDB(dbname2, options));
// Using a different name than db2, to pacify infer's use-after-lifetime
// warnings (http://fbinfer.com).
DB* db2_init = nullptr;
options.create_if_missing = true;
ASSERT_OK(DB::Open(options, dbname2, &db2_init));
ColumnFamilyHandle* cf;
ASSERT_OK(
db2_init->CreateColumnFamily(ColumnFamilyOptions(), "pikachu", &cf));
delete cf;
delete db2_init;
DB* db2 = nullptr;
std::vector<ColumnFamilyDescriptor> column_families;
ColumnFamilyOptions cf_options;
column_families.push_back(ColumnFamilyDescriptor("default", cf_options));
column_families.push_back(
ColumnFamilyDescriptor("pikachu", ColumnFamilyOptions()));
std::vector<ColumnFamilyHandle*> handles;
DBOptions db_opts;
db_opts.env = env_;
ASSERT_OK(DB::Open(db_opts, dbname2, column_families, &handles, &db2));
env_->SleepForMicroseconds(100);
ASSERT_TRUE(db2->Get(ro, handles[0], "a", &value).IsNotFound());
ASSERT_TRUE(db2->Get(ro, handles[0], "b", &value).IsNotFound());
ASSERT_TRUE(db2->Get(ro, handles[0], "c", &value).IsNotFound());
ASSERT_TRUE(db2->Get(ro, handles[0], "d", &value).IsNotFound());
ASSERT_TRUE(db2->Get(ro, handles[0], "e", &value).IsNotFound());
std::unique_ptr<TraceReader> trace_reader;
ASSERT_OK(NewFileTraceReader(env_, env_opts, trace_filename, &trace_reader));
std::unique_ptr<Replayer> replayer;
ASSERT_OK(
db2->NewDefaultReplayer(handles, std::move(trace_reader), &replayer));
ASSERT_OK(replayer->Prepare());
ASSERT_OK(replayer->Replay(ReplayOptions(), nullptr));
replayer.reset();
ASSERT_TRUE(db2->Get(ro, handles[0], "a", &value).IsNotFound());
ASSERT_FALSE(db2->Get(ro, handles[0], "b", &value).IsNotFound());
ASSERT_TRUE(db2->Get(ro, handles[0], "c", &value).IsNotFound());
ASSERT_FALSE(db2->Get(ro, handles[0], "d", &value).IsNotFound());
ASSERT_TRUE(db2->Get(ro, handles[0], "e", &value).IsNotFound());
for (auto handle : handles) {
delete handle;
}
delete db2;
ASSERT_OK(DestroyDB(dbname2, options));
}
TEST_F(DBTest2, TraceWithFilter) {
Options options = CurrentOptions();
options.merge_operator = MergeOperators::CreatePutOperator();
ReadOptions ro;
WriteOptions wo;
TraceOptions trace_opts;
EnvOptions env_opts;
CreateAndReopenWithCF({"pikachu"}, options);
Random rnd(301);
Iterator* single_iter = nullptr;
trace_opts.filter = TraceFilterType::kTraceFilterWrite;
std::string trace_filename = dbname_ + "/rocksdb.trace";
std::unique_ptr<TraceWriter> trace_writer;
ASSERT_OK(NewFileTraceWriter(env_, env_opts, trace_filename, &trace_writer));
ASSERT_OK(db_->StartTrace(trace_opts, std::move(trace_writer)));
ASSERT_OK(Put(0, "a", "1"));
ASSERT_OK(Merge(0, "b", "2"));
ASSERT_OK(Delete(0, "c"));
ASSERT_OK(SingleDelete(0, "d"));
ASSERT_OK(db_->DeleteRange(wo, dbfull()->DefaultColumnFamily(), "e", "f"));
WriteBatch batch;
ASSERT_OK(batch.Put("f", "11"));
ASSERT_OK(batch.Merge("g", "12"));
ASSERT_OK(batch.Delete("h"));
ASSERT_OK(batch.SingleDelete("i"));
ASSERT_OK(batch.DeleteRange("j", "k"));
ASSERT_OK(db_->Write(wo, &batch));
single_iter = db_->NewIterator(ro);
single_iter->Seek("f");
single_iter->SeekForPrev("g");
delete single_iter;
ASSERT_EQ("1", Get(0, "a"));
ASSERT_EQ("12", Get(0, "g"));
ASSERT_OK(Put(1, "foo", "bar"));
ASSERT_OK(Put(1, "rocksdb", "rocks"));
ASSERT_EQ("NOT_FOUND", Get(1, "leveldb"));
ASSERT_OK(db_->EndTrace());
// These should not get into the trace file as it is after EndTrace.
ASSERT_OK(Put("hello", "world"));
ASSERT_OK(Merge("foo", "bar"));
// Open another db, replay, and verify the data
std::string value;
std::string dbname2 = test::PerThreadDBPath(env_, "db_replay");
ASSERT_OK(DestroyDB(dbname2, options));
// Using a different name than db2, to pacify infer's use-after-lifetime
// warnings (http://fbinfer.com).
DB* db2_init = nullptr;
options.create_if_missing = true;
ASSERT_OK(DB::Open(options, dbname2, &db2_init));
ColumnFamilyHandle* cf;
ASSERT_OK(
db2_init->CreateColumnFamily(ColumnFamilyOptions(), "pikachu", &cf));
delete cf;
delete db2_init;
DB* db2 = nullptr;
std::vector<ColumnFamilyDescriptor> column_families;
ColumnFamilyOptions cf_options;
cf_options.merge_operator = MergeOperators::CreatePutOperator();
column_families.push_back(ColumnFamilyDescriptor("default", cf_options));
column_families.push_back(
ColumnFamilyDescriptor("pikachu", ColumnFamilyOptions()));
std::vector<ColumnFamilyHandle*> handles;
DBOptions db_opts;
db_opts.env = env_;
ASSERT_OK(DB::Open(db_opts, dbname2, column_families, &handles, &db2));
env_->SleepForMicroseconds(100);
// Verify that the keys don't already exist
ASSERT_TRUE(db2->Get(ro, handles[0], "a", &value).IsNotFound());
ASSERT_TRUE(db2->Get(ro, handles[0], "g", &value).IsNotFound());
std::unique_ptr<TraceReader> trace_reader;
ASSERT_OK(NewFileTraceReader(env_, env_opts, trace_filename, &trace_reader));
std::unique_ptr<Replayer> replayer;
ASSERT_OK(
db2->NewDefaultReplayer(handles, std::move(trace_reader), &replayer));
ASSERT_OK(replayer->Prepare());
ASSERT_OK(replayer->Replay(ReplayOptions(), nullptr));
replayer.reset();
// All the key-values should not present since we filter out the WRITE ops.
ASSERT_TRUE(db2->Get(ro, handles[0], "a", &value).IsNotFound());
ASSERT_TRUE(db2->Get(ro, handles[0], "g", &value).IsNotFound());
ASSERT_TRUE(db2->Get(ro, handles[0], "hello", &value).IsNotFound());
ASSERT_TRUE(db2->Get(ro, handles[0], "world", &value).IsNotFound());
ASSERT_TRUE(db2->Get(ro, handles[0], "foo", &value).IsNotFound());
ASSERT_TRUE(db2->Get(ro, handles[0], "rocksdb", &value).IsNotFound());
for (auto handle : handles) {
delete handle;
}
delete db2;
ASSERT_OK(DestroyDB(dbname2, options));
// Set up a new db.
std::string dbname3 = test::PerThreadDBPath(env_, "db_not_trace_read");
ASSERT_OK(DestroyDB(dbname3, options));
DB* db3_init = nullptr;
options.create_if_missing = true;
ColumnFamilyHandle* cf3;
ASSERT_OK(DB::Open(options, dbname3, &db3_init));
ASSERT_OK(
db3_init->CreateColumnFamily(ColumnFamilyOptions(), "pikachu", &cf3));
delete cf3;
delete db3_init;
column_families.clear();
column_families.push_back(ColumnFamilyDescriptor("default", cf_options));
column_families.push_back(
ColumnFamilyDescriptor("pikachu", ColumnFamilyOptions()));
handles.clear();
DB* db3 = nullptr;
ASSERT_OK(DB::Open(db_opts, dbname3, column_families, &handles, &db3));
env_->SleepForMicroseconds(100);
// Verify that the keys don't already exist
ASSERT_TRUE(db3->Get(ro, handles[0], "a", &value).IsNotFound());
ASSERT_TRUE(db3->Get(ro, handles[0], "g", &value).IsNotFound());
// The tracer will not record the READ ops.
trace_opts.filter = TraceFilterType::kTraceFilterGet;
std::string trace_filename3 = dbname_ + "/rocksdb.trace_3";
std::unique_ptr<TraceWriter> trace_writer3;
ASSERT_OK(
NewFileTraceWriter(env_, env_opts, trace_filename3, &trace_writer3));
ASSERT_OK(db3->StartTrace(trace_opts, std::move(trace_writer3)));
ASSERT_OK(db3->Put(wo, handles[0], "a", "1"));
ASSERT_OK(db3->Merge(wo, handles[0], "b", "2"));
ASSERT_OK(db3->Delete(wo, handles[0], "c"));
ASSERT_OK(db3->SingleDelete(wo, handles[0], "d"));
ASSERT_OK(db3->Get(ro, handles[0], "a", &value));
ASSERT_EQ(value, "1");
ASSERT_TRUE(db3->Get(ro, handles[0], "c", &value).IsNotFound());
ASSERT_OK(db3->EndTrace());
for (auto handle : handles) {
delete handle;
}
delete db3;
ASSERT_OK(DestroyDB(dbname3, options));
std::unique_ptr<TraceReader> trace_reader3;
ASSERT_OK(
NewFileTraceReader(env_, env_opts, trace_filename3, &trace_reader3));
// Count the number of records in the trace file;
int count = 0;
std::string data;
Status s;
while (true) {
s = trace_reader3->Read(&data);
if (!s.ok()) {
break;
}
count += 1;
}
// We also need to count the header and footer
// 4 WRITE + HEADER + FOOTER = 6
ASSERT_EQ(count, 6);
}
TEST_F(DBTest2, PinnableSliceAndMmapReads) {
Options options = CurrentOptions();
options.env = env_;
if (!IsMemoryMappedAccessSupported()) {
ROCKSDB_GTEST_SKIP("Test requires default environment");
return;
}
options.allow_mmap_reads = true;
options.max_open_files = 100;
options.compression = kNoCompression;
Reopen(options);
ASSERT_OK(Put("foo", "bar"));
ASSERT_OK(Flush());
PinnableSlice pinned_value;
ASSERT_EQ(Get("foo", &pinned_value), Status::OK());
// It is not safe to pin mmap files as they might disappear by compaction
ASSERT_FALSE(pinned_value.IsPinned());
ASSERT_EQ(pinned_value.ToString(), "bar");
ASSERT_OK(dbfull()->TEST_CompactRange(
0 /* level */, nullptr /* begin */, nullptr /* end */,
nullptr /* column_family */, true /* disallow_trivial_move */));
// Ensure pinned_value doesn't rely on memory munmap'd by the above
// compaction. It crashes if it does.
ASSERT_EQ(pinned_value.ToString(), "bar");
pinned_value.Reset();
// Unsafe to pin mmap files when they could be kicked out of table cache
Close();
ASSERT_OK(ReadOnlyReopen(options));
ASSERT_EQ(Get("foo", &pinned_value), Status::OK());
ASSERT_FALSE(pinned_value.IsPinned());
ASSERT_EQ(pinned_value.ToString(), "bar");
pinned_value.Reset();
// In read-only mode with infinite capacity on table cache it should pin the
// value and avoid the memcpy
Close();
options.max_open_files = -1;
ASSERT_OK(ReadOnlyReopen(options));
ASSERT_EQ(Get("foo", &pinned_value), Status::OK());
ASSERT_TRUE(pinned_value.IsPinned());
ASSERT_EQ(pinned_value.ToString(), "bar");
}
TEST_F(DBTest2, DISABLED_IteratorPinnedMemory) {
Options options = CurrentOptions();
options.create_if_missing = true;
options.statistics = ROCKSDB_NAMESPACE::CreateDBStatistics();
BlockBasedTableOptions bbto;
bbto.no_block_cache = false;
bbto.cache_index_and_filter_blocks = false;
bbto.block_cache = NewLRUCache(100000);
bbto.block_size = 400; // small block size
options.table_factory.reset(NewBlockBasedTableFactory(bbto));
Reopen(options);
Random rnd(301);
std::string v = rnd.RandomString(400);
// Since v is the size of a block, each key should take a block
// of 400+ bytes.
ASSERT_OK(Put("1", v));
ASSERT_OK(Put("3", v));
ASSERT_OK(Put("5", v));
ASSERT_OK(Put("7", v));
ASSERT_OK(Flush());
ASSERT_EQ(0, bbto.block_cache->GetPinnedUsage());
// Verify that iterators don't pin more than one data block in block cache
// at each time.
{
std::unique_ptr<Iterator> iter(db_->NewIterator(ReadOptions()));
iter->SeekToFirst();
for (int i = 0; i < 4; i++) {
ASSERT_TRUE(iter->Valid());
// Block cache should contain exactly one block.
ASSERT_GT(bbto.block_cache->GetPinnedUsage(), 0);
ASSERT_LT(bbto.block_cache->GetPinnedUsage(), 800);
iter->Next();
}
ASSERT_FALSE(iter->Valid());
iter->Seek("4");
ASSERT_TRUE(iter->Valid());
ASSERT_GT(bbto.block_cache->GetPinnedUsage(), 0);
ASSERT_LT(bbto.block_cache->GetPinnedUsage(), 800);
iter->Seek("3");
ASSERT_TRUE(iter->Valid());
ASSERT_OK(iter->status());
ASSERT_GT(bbto.block_cache->GetPinnedUsage(), 0);
ASSERT_LT(bbto.block_cache->GetPinnedUsage(), 800);
}
ASSERT_EQ(0, bbto.block_cache->GetPinnedUsage());
// Test compaction case
ASSERT_OK(Put("2", v));
ASSERT_OK(Put("5", v));
ASSERT_OK(Put("6", v));
ASSERT_OK(Put("8", v));
ASSERT_OK(Flush());
// Clear existing data in block cache
bbto.block_cache->SetCapacity(0);
bbto.block_cache->SetCapacity(100000);
// Verify compaction input iterators don't hold more than one data blocks at
// one time.
std::atomic<bool> finished(false);
std::atomic<int> block_newed(0);
std::atomic<int> block_destroyed(0);
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
"Block::Block:0", [&](void* /*arg*/) {
if (finished) {
return;
}
// Two iterators. At most 2 outstanding blocks.
EXPECT_GE(block_newed.load(), block_destroyed.load());
EXPECT_LE(block_newed.load(), block_destroyed.load() + 1);
block_newed.fetch_add(1);
});
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
"Block::~Block", [&](void* /*arg*/) {
if (finished) {
return;
}
// Two iterators. At most 2 outstanding blocks.
EXPECT_GE(block_newed.load(), block_destroyed.load() + 1);
EXPECT_LE(block_newed.load(), block_destroyed.load() + 2);
block_destroyed.fetch_add(1);
});
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
"CompactionJob::Run:BeforeVerify",
[&](void* /*arg*/) { finished = true; });
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
ASSERT_OK(db_->CompactRange(CompactRangeOptions(), nullptr, nullptr));
// Two input files. Each of them has 4 data blocks.
ASSERT_EQ(8, block_newed.load());
ASSERT_EQ(8, block_destroyed.load());
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->DisableProcessing();
}
TEST_F(DBTest2, TestGetColumnFamilyHandleUnlocked) {
// Setup sync point dependency to reproduce the race condition of
// DBImpl::GetColumnFamilyHandleUnlocked
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->LoadDependency({
{"TestGetColumnFamilyHandleUnlocked::GetColumnFamilyHandleUnlocked1",
"TestGetColumnFamilyHandleUnlocked::PreGetColumnFamilyHandleUnlocked2"},
{"TestGetColumnFamilyHandleUnlocked::GetColumnFamilyHandleUnlocked2",
"TestGetColumnFamilyHandleUnlocked::ReadColumnFamilyHandle1"},
});
SyncPoint::GetInstance()->EnableProcessing();
CreateColumnFamilies({"test1", "test2"}, Options());
ASSERT_EQ(handles_.size(), 2);
DBImpl* dbi = static_cast_with_check<DBImpl>(db_);
port::Thread user_thread1([&]() {
auto cfh = dbi->GetColumnFamilyHandleUnlocked(handles_[0]->GetID());
ASSERT_EQ(cfh->GetID(), handles_[0]->GetID());
TEST_SYNC_POINT(
"TestGetColumnFamilyHandleUnlocked::GetColumnFamilyHandleUnlocked1");
TEST_SYNC_POINT(
"TestGetColumnFamilyHandleUnlocked::ReadColumnFamilyHandle1");
ASSERT_EQ(cfh->GetID(), handles_[0]->GetID());
});
port::Thread user_thread2([&]() {
TEST_SYNC_POINT(
"TestGetColumnFamilyHandleUnlocked::PreGetColumnFamilyHandleUnlocked2");
auto cfh = dbi->GetColumnFamilyHandleUnlocked(handles_[1]->GetID());
ASSERT_EQ(cfh->GetID(), handles_[1]->GetID());
TEST_SYNC_POINT(
"TestGetColumnFamilyHandleUnlocked::GetColumnFamilyHandleUnlocked2");
ASSERT_EQ(cfh->GetID(), handles_[1]->GetID());
});
user_thread1.join();
user_thread2.join();
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->DisableProcessing();
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->ClearAllCallBacks();
}
TEST_F(DBTest2, TestCompactFiles) {
// Setup sync point dependency to reproduce the race condition of
// DBImpl::GetColumnFamilyHandleUnlocked
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->LoadDependency({
{"TestCompactFiles::IngestExternalFile1",
"TestCompactFiles::IngestExternalFile2"},
});
SyncPoint::GetInstance()->EnableProcessing();
Options options;
options.env = env_;
options.num_levels = 2;
options.disable_auto_compactions = true;
Reopen(options);
auto* handle = db_->DefaultColumnFamily();
ASSERT_EQ(db_->NumberLevels(handle), 2);
ROCKSDB_NAMESPACE::SstFileWriter sst_file_writer{
ROCKSDB_NAMESPACE::EnvOptions(), options};
std::string external_file1 = dbname_ + "/test_compact_files1.sst_t";
std::string external_file2 = dbname_ + "/test_compact_files2.sst_t";
std::string external_file3 = dbname_ + "/test_compact_files3.sst_t";
ASSERT_OK(sst_file_writer.Open(external_file1));
ASSERT_OK(sst_file_writer.Put("1", "1"));
ASSERT_OK(sst_file_writer.Put("2", "2"));
ASSERT_OK(sst_file_writer.Finish());
ASSERT_OK(sst_file_writer.Open(external_file2));
ASSERT_OK(sst_file_writer.Put("3", "3"));
ASSERT_OK(sst_file_writer.Put("4", "4"));
ASSERT_OK(sst_file_writer.Finish());
ASSERT_OK(sst_file_writer.Open(external_file3));
ASSERT_OK(sst_file_writer.Put("5", "5"));
ASSERT_OK(sst_file_writer.Put("6", "6"));
ASSERT_OK(sst_file_writer.Finish());
ASSERT_OK(db_->IngestExternalFile(handle, {external_file1, external_file3},
IngestExternalFileOptions()));
ASSERT_EQ(NumTableFilesAtLevel(1, 0), 2);
std::vector<std::string> files;
GetSstFiles(env_, dbname_, &files);
ASSERT_EQ(files.size(), 2);
Status user_thread1_status;
port::Thread user_thread1([&]() {
user_thread1_status =
db_->CompactFiles(CompactionOptions(), handle, files, 1);
});
Status user_thread2_status;
port::Thread user_thread2([&]() {
user_thread2_status = db_->IngestExternalFile(handle, {external_file2},
IngestExternalFileOptions());
TEST_SYNC_POINT("TestCompactFiles::IngestExternalFile1");
});
user_thread1.join();
user_thread2.join();
ASSERT_OK(user_thread1_status);
ASSERT_OK(user_thread2_status);
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->DisableProcessing();
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->ClearAllCallBacks();
}
TEST_F(DBTest2, MultiDBParallelOpenTest) {
const int kNumDbs = 2;
Options options = CurrentOptions();
std::vector<std::string> dbnames;
for (int i = 0; i < kNumDbs; ++i) {
dbnames.emplace_back(test::PerThreadDBPath(env_, "db" + std::to_string(i)));
ASSERT_OK(DestroyDB(dbnames.back(), options));
}
// Verify empty DBs can be created in parallel
std::vector<std::thread> open_threads;
std::vector<DB*> dbs{static_cast<unsigned int>(kNumDbs), nullptr};
options.create_if_missing = true;
for (int i = 0; i < kNumDbs; ++i) {
open_threads.emplace_back(
[&](int dbnum) {
ASSERT_OK(DB::Open(options, dbnames[dbnum], &dbs[dbnum]));
},
i);
}
// Now add some data and close, so next we can verify non-empty DBs can be
// recovered in parallel
for (int i = 0; i < kNumDbs; ++i) {
open_threads[i].join();
ASSERT_OK(dbs[i]->Put(WriteOptions(), "xi", "gua"));
delete dbs[i];
}
// Verify non-empty DBs can be recovered in parallel
open_threads.clear();
for (int i = 0; i < kNumDbs; ++i) {
open_threads.emplace_back(
[&](int dbnum) {
ASSERT_OK(DB::Open(options, dbnames[dbnum], &dbs[dbnum]));
},
i);
}
// Wait and cleanup
for (int i = 0; i < kNumDbs; ++i) {
open_threads[i].join();
delete dbs[i];
ASSERT_OK(DestroyDB(dbnames[i], options));
}
}
namespace {
class DummyOldStats : public Statistics {
public:
const char* Name() const override { return "DummyOldStats"; }
uint64_t getTickerCount(uint32_t /*ticker_type*/) const override { return 0; }
void recordTick(uint32_t /* ticker_type */, uint64_t /* count */) override {
num_rt++;
}
void setTickerCount(uint32_t /*ticker_type*/, uint64_t /*count*/) override {}
uint64_t getAndResetTickerCount(uint32_t /*ticker_type*/) override {
return 0;
}
void measureTime(uint32_t /*histogram_type*/, uint64_t /*count*/) override {
num_mt++;
}
void histogramData(
uint32_t /*histogram_type*/,
ROCKSDB_NAMESPACE::HistogramData* const /*data*/) const override {}
std::string getHistogramString(uint32_t /*type*/) const override {
return "";
}
bool HistEnabledForType(uint32_t /*type*/) const override { return false; }
std::string ToString() const override { return ""; }
std::atomic<int> num_rt{0};
std::atomic<int> num_mt{0};
};
} // anonymous namespace
TEST_F(DBTest2, OldStatsInterface) {
DummyOldStats* dos = new DummyOldStats();
std::shared_ptr<Statistics> stats(dos);
Options options = CurrentOptions();
options.create_if_missing = true;
options.statistics = stats;
Reopen(options);
ASSERT_OK(Put("foo", "bar"));
ASSERT_EQ("bar", Get("foo"));
ASSERT_OK(Flush());
ASSERT_EQ("bar", Get("foo"));
ASSERT_GT(dos->num_rt, 0);
ASSERT_GT(dos->num_mt, 0);
}
TEST_F(DBTest2, CloseWithUnreleasedSnapshot) {
const Snapshot* ss = db_->GetSnapshot();
for (auto h : handles_) {
db_->DestroyColumnFamilyHandle(h);
}
handles_.clear();
ASSERT_NOK(db_->Close());
db_->ReleaseSnapshot(ss);
ASSERT_OK(db_->Close());
delete db_;
db_ = nullptr;
}
TEST_F(DBTest2, PrefixBloomReseek) {
Options options = CurrentOptions();
options.create_if_missing = true;
options.prefix_extractor.reset(NewCappedPrefixTransform(3));
BlockBasedTableOptions bbto;
bbto.filter_policy.reset(NewBloomFilterPolicy(10, false));
bbto.whole_key_filtering = false;
options.table_factory.reset(NewBlockBasedTableFactory(bbto));
DestroyAndReopen(options);
// Construct two L1 files with keys:
// f1:[aaa1 ccc1] f2:[ddd0]
ASSERT_OK(Put("aaa1", ""));
ASSERT_OK(Put("ccc1", ""));
ASSERT_OK(Flush());
ASSERT_OK(Put("ddd0", ""));
ASSERT_OK(Flush());
CompactRangeOptions cro;
cro.bottommost_level_compaction = BottommostLevelCompaction::kSkip;
ASSERT_OK(db_->CompactRange(cro, nullptr, nullptr));
ASSERT_OK(Put("bbb1", ""));
Iterator* iter = db_->NewIterator(ReadOptions());
ASSERT_OK(iter->status());
// Seeking into f1, the iterator will check bloom filter which returns the
// file iterator ot be invalidate, and the cursor will put into f2, with
// the next key to be "ddd0".
iter->Seek("bbb1");
ASSERT_TRUE(iter->Valid());
ASSERT_EQ("bbb1", iter->key().ToString());
// Reseek ccc1, the L1 iterator needs to go back to f1 and reseek.
iter->Seek("ccc1");
ASSERT_TRUE(iter->Valid());
ASSERT_EQ("ccc1", iter->key().ToString());
delete iter;
}
TEST_F(DBTest2, PrefixBloomFilteredOut) {
Options options = CurrentOptions();
options.create_if_missing = true;
options.prefix_extractor.reset(NewCappedPrefixTransform(3));
BlockBasedTableOptions bbto;
bbto.filter_policy.reset(NewBloomFilterPolicy(10, false));
bbto.whole_key_filtering = false;
options.table_factory.reset(NewBlockBasedTableFactory(bbto));
DestroyAndReopen(options);
// Construct two L1 files with keys:
// f1:[aaa1 ccc1] f2:[ddd0]
ASSERT_OK(Put("aaa1", ""));
ASSERT_OK(Put("ccc1", ""));
ASSERT_OK(Flush());
ASSERT_OK(Put("ddd0", ""));
ASSERT_OK(Flush());
CompactRangeOptions cro;
cro.bottommost_level_compaction = BottommostLevelCompaction::kSkip;
ASSERT_OK(db_->CompactRange(cro, nullptr, nullptr));
Iterator* iter = db_->NewIterator(ReadOptions());
ASSERT_OK(iter->status());
// Bloom filter is filterd out by f1.
// This is just one of several valid position following the contract.
// Postioning to ccc1 or ddd0 is also valid. This is just to validate
// the behavior of the current implementation. If underlying implementation
// changes, the test might fail here.
iter->Seek("bbb1");
ASSERT_OK(iter->status());
ASSERT_FALSE(iter->Valid());
delete iter;
}
TEST_F(DBTest2, RowCacheSnapshot) {
Options options = CurrentOptions();
options.statistics = ROCKSDB_NAMESPACE::CreateDBStatistics();
options.row_cache = NewLRUCache(8 * 8192);
DestroyAndReopen(options);
ASSERT_OK(Put("foo", "bar1"));
const Snapshot* s1 = db_->GetSnapshot();
ASSERT_OK(Put("foo", "bar2"));
ASSERT_OK(Flush());
ASSERT_OK(Put("foo2", "bar"));
const Snapshot* s2 = db_->GetSnapshot();
ASSERT_OK(Put("foo3", "bar"));
const Snapshot* s3 = db_->GetSnapshot();
ASSERT_EQ(TestGetTickerCount(options, ROW_CACHE_HIT), 0);
ASSERT_EQ(TestGetTickerCount(options, ROW_CACHE_MISS), 0);
ASSERT_EQ(Get("foo"), "bar2");
ASSERT_EQ(TestGetTickerCount(options, ROW_CACHE_HIT), 0);
ASSERT_EQ(TestGetTickerCount(options, ROW_CACHE_MISS), 1);
ASSERT_EQ(Get("foo"), "bar2");
ASSERT_EQ(TestGetTickerCount(options, ROW_CACHE_HIT), 1);
ASSERT_EQ(TestGetTickerCount(options, ROW_CACHE_MISS), 1);
ASSERT_EQ(Get("foo", s1), "bar1");
ASSERT_EQ(TestGetTickerCount(options, ROW_CACHE_HIT), 1);
ASSERT_EQ(TestGetTickerCount(options, ROW_CACHE_MISS), 2);
ASSERT_EQ(Get("foo", s2), "bar2");
ASSERT_EQ(TestGetTickerCount(options, ROW_CACHE_HIT), 2);
ASSERT_EQ(TestGetTickerCount(options, ROW_CACHE_MISS), 2);
ASSERT_EQ(Get("foo", s1), "bar1");
ASSERT_EQ(TestGetTickerCount(options, ROW_CACHE_HIT), 3);
ASSERT_EQ(TestGetTickerCount(options, ROW_CACHE_MISS), 2);
ASSERT_EQ(Get("foo", s3), "bar2");
ASSERT_EQ(TestGetTickerCount(options, ROW_CACHE_HIT), 4);
ASSERT_EQ(TestGetTickerCount(options, ROW_CACHE_MISS), 2);
db_->ReleaseSnapshot(s1);
db_->ReleaseSnapshot(s2);
db_->ReleaseSnapshot(s3);
}
// When DB is reopened with multiple column families, the manifest file
// is written after the first CF is flushed, and it is written again
// after each flush. If DB crashes between the flushes, the flushed CF
// flushed will pass the latest log file, and now we require it not
// to be corrupted, and triggering a corruption report.
// We need to fix the bug and enable the test.
TEST_F(DBTest2, CrashInRecoveryMultipleCF) {
const std::vector<std::string> sync_points = {
"DBImpl::RecoverLogFiles:BeforeFlushFinalMemtable",
"VersionSet::ProcessManifestWrites:BeforeWriteLastVersionEdit:0"};
for (const auto& test_sync_point : sync_points) {
Options options = CurrentOptions();
// First destroy original db to ensure a clean start.
DestroyAndReopen(options);
options.create_if_missing = true;
options.wal_recovery_mode = WALRecoveryMode::kPointInTimeRecovery;
CreateAndReopenWithCF({"pikachu"}, options);
ASSERT_OK(Put("foo", "bar"));
ASSERT_OK(Flush());
ASSERT_OK(Put(1, "foo", "bar"));
ASSERT_OK(Flush(1));
ASSERT_OK(Put("foo", "bar"));
ASSERT_OK(Put(1, "foo", "bar"));
// The value is large enough to be divided to two blocks.
std::string large_value(400, ' ');
ASSERT_OK(Put("foo1", large_value));
ASSERT_OK(Put("foo2", large_value));
Close();
// Corrupt the log file in the middle, so that it is not corrupted
// in the tail.
std::vector<std::string> filenames;
ASSERT_OK(env_->GetChildren(dbname_, &filenames));
for (const auto& f : filenames) {
uint64_t number;
FileType type;
if (ParseFileName(f, &number, &type) && type == FileType::kWalFile) {
std::string fname = dbname_ + "/" + f;
std::string file_content;
ASSERT_OK(ReadFileToString(env_, fname, &file_content));
file_content[400] = 'h';
file_content[401] = 'a';
ASSERT_OK(WriteStringToFile(env_, file_content, fname));
break;
}
}
// Reopen and freeze the file system after the first manifest write.
FaultInjectionTestEnv fit_env(options.env);
options.env = &fit_env;
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->ClearAllCallBacks();
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
test_sync_point,
[&](void* /*arg*/) { fit_env.SetFilesystemActive(false); });
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
ASSERT_NOK(TryReopenWithColumnFamilies(
{kDefaultColumnFamilyName, "pikachu"}, options));
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->DisableProcessing();
fit_env.SetFilesystemActive(true);
// If we continue using failure ingestion Env, it will conplain something
// when renaming current file, which is not expected. Need to investigate
// why.
options.env = env_;
ASSERT_OK(TryReopenWithColumnFamilies({kDefaultColumnFamilyName, "pikachu"},
options));
}
}
TEST_F(DBTest2, SeekFileRangeDeleteTail) {
Options options = CurrentOptions();
options.prefix_extractor.reset(NewCappedPrefixTransform(1));
options.num_levels = 3;
DestroyAndReopen(options);
ASSERT_OK(Put("a", "a"));
const Snapshot* s1 = db_->GetSnapshot();
ASSERT_OK(
db_->DeleteRange(WriteOptions(), db_->DefaultColumnFamily(), "a", "f"));
ASSERT_OK(Put("b", "a"));
ASSERT_OK(Flush());
ASSERT_OK(Put("x", "a"));
ASSERT_OK(Put("z", "a"));
ASSERT_OK(Flush());
CompactRangeOptions cro;
cro.change_level = true;
cro.target_level = 2;
ASSERT_OK(db_->CompactRange(cro, nullptr, nullptr));
{
ReadOptions ro;
ro.total_order_seek = true;
std::unique_ptr<Iterator> iter(db_->NewIterator(ro));
ASSERT_OK(iter->status());
iter->Seek("e");
ASSERT_TRUE(iter->Valid());
ASSERT_EQ("x", iter->key().ToString());
}
db_->ReleaseSnapshot(s1);
}
TEST_F(DBTest2, BackgroundPurgeTest) {
Options options = CurrentOptions();
options.write_buffer_manager =
std::make_shared<ROCKSDB_NAMESPACE::WriteBufferManager>(1 << 20);
options.avoid_unnecessary_blocking_io = true;
DestroyAndReopen(options);
size_t base_value = options.write_buffer_manager->memory_usage();
ASSERT_OK(Put("a", "a"));
Iterator* iter = db_->NewIterator(ReadOptions());
ASSERT_OK(iter->status());
ASSERT_OK(Flush());
size_t value = options.write_buffer_manager->memory_usage();
ASSERT_GT(value, base_value);
db_->GetEnv()->SetBackgroundThreads(1, Env::Priority::HIGH);
test::SleepingBackgroundTask sleeping_task_after;
db_->GetEnv()->Schedule(&test::SleepingBackgroundTask::DoSleepTask,
&sleeping_task_after, Env::Priority::HIGH);
delete iter;
Env::Default()->SleepForMicroseconds(100000);
value = options.write_buffer_manager->memory_usage();
ASSERT_GT(value, base_value);
sleeping_task_after.WakeUp();
sleeping_task_after.WaitUntilDone();
test::SleepingBackgroundTask sleeping_task_after2;
db_->GetEnv()->Schedule(&test::SleepingBackgroundTask::DoSleepTask,
&sleeping_task_after2, Env::Priority::HIGH);
sleeping_task_after2.WakeUp();
sleeping_task_after2.WaitUntilDone();
value = options.write_buffer_manager->memory_usage();
ASSERT_EQ(base_value, value);
}
TEST_F(DBTest2, SwitchMemtableRaceWithNewManifest) {
Options options = CurrentOptions();
DestroyAndReopen(options);
options.max_manifest_file_size = 10;
options.create_if_missing = true;
CreateAndReopenWithCF({"pikachu"}, options);
ASSERT_EQ(2, handles_.size());
ASSERT_OK(Put("foo", "value"));
const int kL0Files = options.level0_file_num_compaction_trigger;
for (int i = 0; i < kL0Files; ++i) {
ASSERT_OK(Put(/*cf=*/1, "a", std::to_string(i)));
ASSERT_OK(Flush(/*cf=*/1));
}
port::Thread thread([&]() { ASSERT_OK(Flush()); });
ASSERT_OK(dbfull()->TEST_WaitForCompact());
thread.join();
}
TEST_F(DBTest2, SameSmallestInSameLevel) {
// This test validates fractional casacading logic when several files at one
// one level only contains the same user key.
Options options = CurrentOptions();
options.merge_operator = MergeOperators::CreateStringAppendOperator();
DestroyAndReopen(options);
ASSERT_OK(Put("key", "1"));
ASSERT_OK(Put("key", "2"));
ASSERT_OK(db_->Merge(WriteOptions(), "key", "3"));
ASSERT_OK(db_->Merge(WriteOptions(), "key", "4"));
ASSERT_OK(Flush());
CompactRangeOptions cro;
cro.change_level = true;
cro.target_level = 2;
ASSERT_OK(dbfull()->CompactRange(cro, db_->DefaultColumnFamily(), nullptr,
nullptr));
ASSERT_OK(db_->Merge(WriteOptions(), "key", "5"));
ASSERT_OK(Flush());
ASSERT_OK(db_->Merge(WriteOptions(), "key", "6"));
ASSERT_OK(Flush());
ASSERT_OK(db_->Merge(WriteOptions(), "key", "7"));
ASSERT_OK(Flush());
ASSERT_OK(db_->Merge(WriteOptions(), "key", "8"));
ASSERT_OK(Flush());
ASSERT_OK(dbfull()->TEST_WaitForCompact());
ASSERT_EQ("0,4,1", FilesPerLevel());
ASSERT_EQ("2,3,4,5,6,7,8", Get("key"));
}
TEST_F(DBTest2, FileConsistencyCheckInOpen) {
ASSERT_OK(Put("foo", "bar"));
ASSERT_OK(Flush());
SyncPoint::GetInstance()->SetCallBack(
"VersionBuilder::CheckConsistencyBeforeReturn", [&](void* arg) {
Status* ret_s = static_cast<Status*>(arg);
*ret_s = Status::Corruption("fcc");
});
SyncPoint::GetInstance()->EnableProcessing();
Options options = CurrentOptions();
options.force_consistency_checks = true;
ASSERT_NOK(TryReopen(options));
SyncPoint::GetInstance()->DisableProcessing();
}
TEST_F(DBTest2, BlockBasedTablePrefixIndexSeekForPrev) {
// create a DB with block prefix index
BlockBasedTableOptions table_options;
Options options = CurrentOptions();
table_options.block_size = 300;
table_options.index_type = BlockBasedTableOptions::kHashSearch;
table_options.index_shortening =
BlockBasedTableOptions::IndexShorteningMode::kNoShortening;
options.table_factory.reset(NewBlockBasedTableFactory(table_options));
options.prefix_extractor.reset(NewFixedPrefixTransform(1));
Reopen(options);
Random rnd(301);
std::string large_value = rnd.RandomString(500);
ASSERT_OK(Put("a1", large_value));
ASSERT_OK(Put("x1", large_value));
ASSERT_OK(Put("y1", large_value));
ASSERT_OK(Flush());
{
std::unique_ptr<Iterator> iterator(db_->NewIterator(ReadOptions()));
ASSERT_OK(iterator->status());
iterator->SeekForPrev("x3");
ASSERT_TRUE(iterator->Valid());
ASSERT_EQ("x1", iterator->key().ToString());
iterator->SeekForPrev("a3");
ASSERT_TRUE(iterator->Valid());
ASSERT_EQ("a1", iterator->key().ToString());
iterator->SeekForPrev("y3");
ASSERT_TRUE(iterator->Valid());
ASSERT_EQ("y1", iterator->key().ToString());
// Query more than one non-existing prefix to cover the case both
// of empty hash bucket and hash bucket conflict.
iterator->SeekForPrev("b1");
// Result should be not valid or "a1".
if (iterator->Valid()) {
ASSERT_EQ("a1", iterator->key().ToString());
}
iterator->SeekForPrev("c1");
// Result should be not valid or "a1".
if (iterator->Valid()) {
ASSERT_EQ("a1", iterator->key().ToString());
}
iterator->SeekForPrev("d1");
// Result should be not valid or "a1".
if (iterator->Valid()) {
ASSERT_EQ("a1", iterator->key().ToString());
}
iterator->SeekForPrev("y3");
ASSERT_TRUE(iterator->Valid());
ASSERT_EQ("y1", iterator->key().ToString());
}
}
TEST_F(DBTest2, PartitionedIndexPrefetchFailure) {
Options options = last_options_;
options.env = env_;
options.max_open_files = 20;
BlockBasedTableOptions bbto;
bbto.index_type = BlockBasedTableOptions::IndexType::kTwoLevelIndexSearch;
bbto.metadata_block_size = 128;
bbto.block_size = 128;
bbto.block_cache = NewLRUCache(16777216);
bbto.cache_index_and_filter_blocks = true;
options.table_factory.reset(NewBlockBasedTableFactory(bbto));
DestroyAndReopen(options);
// Force no table cache so every read will preload the SST file.
dbfull()->TEST_table_cache()->SetCapacity(0);
bbto.block_cache->SetCapacity(0);
Random rnd(301);
for (int i = 0; i < 4096; i++) {
ASSERT_OK(Put(Key(i), rnd.RandomString(32)));
}
ASSERT_OK(Flush());
// Try different random failures in table open for 300 times.
for (int i = 0; i < 300; i++) {
env_->num_reads_fails_ = 0;
env_->rand_reads_fail_odd_ = 8;
std::string value;
Status s = dbfull()->Get(ReadOptions(), Key(1), &value);
if (env_->num_reads_fails_ > 0) {
ASSERT_NOK(s);
} else {
ASSERT_OK(s);
}
}
env_->rand_reads_fail_odd_ = 0;
}
TEST_F(DBTest2, ChangePrefixExtractor) {
for (bool use_partitioned_filter : {true, false}) {
// create a DB with block prefix index
BlockBasedTableOptions table_options;
Options options = CurrentOptions();
// Sometimes filter is checked based on upper bound. Assert counters
// for that case. Otherwise, only check data correctness.
bool expect_filter_check = !use_partitioned_filter;
table_options.partition_filters = use_partitioned_filter;
if (use_partitioned_filter) {
table_options.index_type =
BlockBasedTableOptions::IndexType::kTwoLevelIndexSearch;
}
table_options.filter_policy.reset(NewBloomFilterPolicy(10, false));
options.table_factory.reset(NewBlockBasedTableFactory(table_options));
options.statistics = CreateDBStatistics();
options.prefix_extractor.reset(NewFixedPrefixTransform(2));
DestroyAndReopen(options);
Random rnd(301);
ASSERT_OK(Put("aa", ""));
ASSERT_OK(Put("xb", ""));
ASSERT_OK(Put("xx1", ""));
ASSERT_OK(Put("xz1", ""));
ASSERT_OK(Put("zz", ""));
ASSERT_OK(Flush());
// After reopening DB with prefix size 2 => 1, prefix extractor
// won't take effective unless it won't change results based
// on upper bound and seek key.
options.prefix_extractor.reset(NewFixedPrefixTransform(1));
Reopen(options);
{
std::unique_ptr<Iterator> iterator(db_->NewIterator(ReadOptions()));
ASSERT_OK(iterator->status());
iterator->Seek("xa");
ASSERT_TRUE(iterator->Valid());
ASSERT_EQ("xb", iterator->key().ToString());
if (expect_filter_check) {
EXPECT_EQ(0, PopTicker(options, NON_LAST_LEVEL_SEEK_FILTER_MATCH));
}
iterator->Seek("xz");
ASSERT_TRUE(iterator->Valid());
ASSERT_EQ("xz1", iterator->key().ToString());
if (expect_filter_check) {
EXPECT_EQ(0, PopTicker(options, NON_LAST_LEVEL_SEEK_FILTER_MATCH));
}
}
std::string ub_str = "xg9";
Slice ub(ub_str);
ReadOptions ro;
ro.iterate_upper_bound = &ub;
{
std::unique_ptr<Iterator> iterator(db_->NewIterator(ro));
ASSERT_OK(iterator->status());
// SeekForPrev() never uses prefix bloom if it is changed.
iterator->SeekForPrev("xg0");
ASSERT_TRUE(iterator->Valid());
ASSERT_EQ("xb", iterator->key().ToString());
if (expect_filter_check) {
EXPECT_EQ(0, PopTicker(options, NON_LAST_LEVEL_SEEK_FILTER_MATCH));
}
}
ub_str = "xx9";
ub = Slice(ub_str);
{
std::unique_ptr<Iterator> iterator(db_->NewIterator(ro));
ASSERT_OK(iterator->status());
iterator->Seek("x");
ASSERT_TRUE(iterator->Valid());
ASSERT_EQ("xb", iterator->key().ToString());
if (expect_filter_check) {
EXPECT_EQ(0, PopTicker(options, NON_LAST_LEVEL_SEEK_FILTER_MATCH));
}
iterator->Seek("xx0");
ASSERT_TRUE(iterator->Valid());
ASSERT_EQ("xx1", iterator->key().ToString());
if (expect_filter_check) {
EXPECT_EQ(1, PopTicker(options, NON_LAST_LEVEL_SEEK_FILTER_MATCH));
}
}
CompactRangeOptions compact_range_opts;
compact_range_opts.bottommost_level_compaction =
BottommostLevelCompaction::kForce;
ASSERT_OK(db_->CompactRange(compact_range_opts, nullptr, nullptr));
ASSERT_OK(db_->CompactRange(compact_range_opts, nullptr, nullptr));
// Re-execute similar queries after a full compaction
{
std::unique_ptr<Iterator> iterator(db_->NewIterator(ReadOptions()));
iterator->Seek("x");
ASSERT_TRUE(iterator->Valid());
ASSERT_EQ("xb", iterator->key().ToString());
if (expect_filter_check) {
EXPECT_EQ(1, PopTicker(options, NON_LAST_LEVEL_SEEK_FILTER_MATCH));
}
iterator->Seek("xg");
ASSERT_TRUE(iterator->Valid());
ASSERT_EQ("xx1", iterator->key().ToString());
if (expect_filter_check) {
EXPECT_EQ(1, PopTicker(options, NON_LAST_LEVEL_SEEK_FILTER_MATCH));
}
iterator->Seek("xz");
ASSERT_TRUE(iterator->Valid());
ASSERT_EQ("xz1", iterator->key().ToString());
if (expect_filter_check) {
EXPECT_EQ(1, PopTicker(options, NON_LAST_LEVEL_SEEK_FILTER_MATCH));
}
ASSERT_OK(iterator->status());
}
{
std::unique_ptr<Iterator> iterator(db_->NewIterator(ro));
iterator->SeekForPrev("xx0");
ASSERT_TRUE(iterator->Valid());
ASSERT_EQ("xb", iterator->key().ToString());
if (expect_filter_check) {
EXPECT_EQ(1, PopTicker(options, NON_LAST_LEVEL_SEEK_FILTER_MATCH));
}
iterator->Seek("xx0");
ASSERT_TRUE(iterator->Valid());
ASSERT_EQ("xx1", iterator->key().ToString());
if (expect_filter_check) {
EXPECT_EQ(1, PopTicker(options, NON_LAST_LEVEL_SEEK_FILTER_MATCH));
}
ASSERT_OK(iterator->status());
}
ub_str = "xg9";
ub = Slice(ub_str);
{
std::unique_ptr<Iterator> iterator(db_->NewIterator(ro));
iterator->SeekForPrev("xg0");
ASSERT_TRUE(iterator->Valid());
ASSERT_EQ("xb", iterator->key().ToString());
if (expect_filter_check) {
EXPECT_EQ(1, PopTicker(options, NON_LAST_LEVEL_SEEK_FILTER_MATCH));
}
ASSERT_OK(iterator->status());
}
}
}
TEST_F(DBTest2, BlockBasedTablePrefixGetIndexNotFound) {
// create a DB with block prefix index
BlockBasedTableOptions table_options;
Options options = CurrentOptions();
table_options.block_size = 300;
table_options.index_type = BlockBasedTableOptions::kHashSearch;
table_options.index_shortening =
BlockBasedTableOptions::IndexShorteningMode::kNoShortening;
options.table_factory.reset(NewBlockBasedTableFactory(table_options));
options.prefix_extractor.reset(NewFixedPrefixTransform(1));
options.level0_file_num_compaction_trigger = 8;
Reopen(options);
ASSERT_OK(Put("b1", "ok"));
ASSERT_OK(Flush());
// Flushing several files so that the chance that hash bucket
// is empty fo "b" in at least one of the files is high.
ASSERT_OK(Put("a1", ""));
ASSERT_OK(Put("c1", ""));
ASSERT_OK(Flush());
ASSERT_OK(Put("a2", ""));
ASSERT_OK(Put("c2", ""));
ASSERT_OK(Flush());
ASSERT_OK(Put("a3", ""));
ASSERT_OK(Put("c3", ""));
ASSERT_OK(Flush());
ASSERT_OK(Put("a4", ""));
ASSERT_OK(Put("c4", ""));
ASSERT_OK(Flush());
ASSERT_OK(Put("a5", ""));
ASSERT_OK(Put("c5", ""));
ASSERT_OK(Flush());
ASSERT_EQ("ok", Get("b1"));
}
TEST_F(DBTest2, AutoPrefixMode1) {
do {
// create a DB with block prefix index
Options options = CurrentOptions();
BlockBasedTableOptions table_options =
*options.table_factory->GetOptions<BlockBasedTableOptions>();
table_options.filter_policy.reset(NewBloomFilterPolicy(10, false));
options.table_factory.reset(NewBlockBasedTableFactory(table_options));
options.prefix_extractor.reset(NewFixedPrefixTransform(1));
options.statistics = CreateDBStatistics();
Reopen(options);
Random rnd(301);
std::string large_value = rnd.RandomString(500);
ASSERT_OK(Put("a1", large_value));
ASSERT_OK(Put("x1", large_value));
ASSERT_OK(Put("y1", large_value));
ASSERT_OK(Flush());
ReadOptions ro;
ro.total_order_seek = false;
ro.auto_prefix_mode = true;
const auto hit_stat = options.num_levels == 1
? LAST_LEVEL_SEEK_FILTER_MATCH
: NON_LAST_LEVEL_SEEK_FILTER_MATCH;
const auto miss_stat = options.num_levels == 1
? LAST_LEVEL_SEEK_FILTERED
: NON_LAST_LEVEL_SEEK_FILTERED;
{
std::unique_ptr<Iterator> iterator(db_->NewIterator(ro));
iterator->Seek("b1");
ASSERT_TRUE(iterator->Valid());
ASSERT_EQ("x1", iterator->key().ToString());
EXPECT_EQ(0, TestGetAndResetTickerCount(options, hit_stat));
EXPECT_EQ(0, TestGetAndResetTickerCount(options, miss_stat));
ASSERT_OK(iterator->status());
}
Slice ub;
ro.iterate_upper_bound = &ub;
ub = "b9";
{
std::unique_ptr<Iterator> iterator(db_->NewIterator(ro));
iterator->Seek("b1");
ASSERT_FALSE(iterator->Valid());
EXPECT_EQ(0, TestGetAndResetTickerCount(options, hit_stat));
EXPECT_EQ(1, TestGetAndResetTickerCount(options, miss_stat));
ASSERT_OK(iterator->status());
}
ub = "z";
{
std::unique_ptr<Iterator> iterator(db_->NewIterator(ro));
iterator->Seek("b1");
ASSERT_TRUE(iterator->Valid());
ASSERT_EQ("x1", iterator->key().ToString());
EXPECT_EQ(0, TestGetAndResetTickerCount(options, hit_stat));
EXPECT_EQ(0, TestGetAndResetTickerCount(options, miss_stat));
ASSERT_OK(iterator->status());
}
ub = "c";
{
std::unique_ptr<Iterator> iterator(db_->NewIterator(ro));
iterator->Seek("b1");
ASSERT_FALSE(iterator->Valid());
EXPECT_EQ(0, TestGetAndResetTickerCount(options, hit_stat));
EXPECT_EQ(1, TestGetAndResetTickerCount(options, miss_stat));
ASSERT_OK(iterator->status());
}
ub = "c1";
{
std::unique_ptr<Iterator> iterator(db_->NewIterator(ro));
iterator->Seek("b1");
ASSERT_FALSE(iterator->Valid());
EXPECT_EQ(0, TestGetAndResetTickerCount(options, hit_stat));
EXPECT_EQ(0, TestGetAndResetTickerCount(options, miss_stat));
ASSERT_OK(iterator->status());
}
// The same queries without recreating iterator
{
std::unique_ptr<Iterator> iterator(db_->NewIterator(ro));
ub = "b9";
iterator->Seek("b1");
ASSERT_FALSE(iterator->Valid());
EXPECT_EQ(0, TestGetAndResetTickerCount(options, hit_stat));
EXPECT_EQ(1, TestGetAndResetTickerCount(options, miss_stat));
ASSERT_OK(iterator->status());
ub = "z";
iterator->Seek("b1");
ASSERT_TRUE(iterator->Valid());
ASSERT_EQ("x1", iterator->key().ToString());
EXPECT_EQ(0, TestGetAndResetTickerCount(options, hit_stat));
EXPECT_EQ(0, TestGetAndResetTickerCount(options, miss_stat));
ub = "c";
iterator->Seek("b1");
ASSERT_FALSE(iterator->Valid());
EXPECT_EQ(0, TestGetAndResetTickerCount(options, hit_stat));
EXPECT_EQ(1, TestGetAndResetTickerCount(options, miss_stat));
ub = "b9";
iterator->SeekForPrev("b1");
ASSERT_TRUE(iterator->Valid());
ASSERT_EQ("a1", iterator->key().ToString());
EXPECT_EQ(0, TestGetAndResetTickerCount(options, hit_stat));
EXPECT_EQ(0, TestGetAndResetTickerCount(options, miss_stat));
ub = "zz";
iterator->SeekToLast();
ASSERT_TRUE(iterator->Valid());
ASSERT_EQ("y1", iterator->key().ToString());
iterator->SeekToFirst();
ASSERT_TRUE(iterator->Valid());
ASSERT_EQ("a1", iterator->key().ToString());
}
// Similar, now with reverse comparator
// Technically, we are violating axiom 2 of prefix_extractors, but
// it should be revised because of major use-cases using
// ReverseBytewiseComparator with capped/fixed prefix Seek. (FIXME)
options.comparator = ReverseBytewiseComparator();
options.prefix_extractor.reset(NewFixedPrefixTransform(1));
DestroyAndReopen(options);
ASSERT_OK(Put("a1", large_value));
ASSERT_OK(Put("x1", large_value));
ASSERT_OK(Put("y1", large_value));
ASSERT_OK(Flush());
{
std::unique_ptr<Iterator> iterator(db_->NewIterator(ro));
ub = "b1";
iterator->Seek("b9");
ASSERT_FALSE(iterator->Valid());
EXPECT_EQ(0, TestGetAndResetTickerCount(options, hit_stat));
EXPECT_EQ(1, TestGetAndResetTickerCount(options, miss_stat));
ASSERT_OK(iterator->status());
ub = "b1";
iterator->Seek("z");
ASSERT_TRUE(iterator->Valid());
ASSERT_EQ("y1", iterator->key().ToString());
EXPECT_EQ(0, TestGetAndResetTickerCount(options, hit_stat));
EXPECT_EQ(0, TestGetAndResetTickerCount(options, miss_stat));
ub = "b1";
iterator->Seek("c");
ASSERT_FALSE(iterator->Valid());
EXPECT_EQ(0, TestGetAndResetTickerCount(options, hit_stat));
EXPECT_EQ(0, TestGetAndResetTickerCount(options, miss_stat));
ub = "b";
iterator->Seek("c9");
ASSERT_FALSE(iterator->Valid());
// Fails if ReverseBytewiseComparator::IsSameLengthImmediateSuccessor
// is "correctly" implemented.
EXPECT_EQ(0, TestGetAndResetTickerCount(options, hit_stat));
EXPECT_EQ(0, TestGetAndResetTickerCount(options, miss_stat));
ub = "a";
iterator->Seek("b9");
// Fails if ReverseBytewiseComparator::IsSameLengthImmediateSuccessor
// is "correctly" implemented.
ASSERT_TRUE(iterator->Valid());
ASSERT_EQ("a1", iterator->key().ToString());
EXPECT_EQ(0, TestGetAndResetTickerCount(options, hit_stat));
EXPECT_EQ(0, TestGetAndResetTickerCount(options, miss_stat));
ub = "b";
iterator->Seek("a");
ASSERT_FALSE(iterator->Valid());
// Fails if ReverseBytewiseComparator::IsSameLengthImmediateSuccessor
// matches BytewiseComparator::IsSameLengthImmediateSuccessor. Upper
// comparing before seek key prevents a real bug from surfacing.
EXPECT_EQ(0, TestGetAndResetTickerCount(options, hit_stat));
EXPECT_EQ(0, TestGetAndResetTickerCount(options, miss_stat));
ub = "b1";
iterator->SeekForPrev("b9");
ASSERT_TRUE(iterator->Valid());
// Fails if ReverseBytewiseComparator::IsSameLengthImmediateSuccessor
// is "correctly" implemented.
ASSERT_EQ("x1", iterator->key().ToString());
EXPECT_EQ(0, TestGetAndResetTickerCount(options, hit_stat));
EXPECT_EQ(0, TestGetAndResetTickerCount(options, miss_stat));
ub = "a";
iterator->SeekToLast();
ASSERT_TRUE(iterator->Valid());
ASSERT_EQ("a1", iterator->key().ToString());
iterator->SeekToFirst();
ASSERT_TRUE(iterator->Valid());
ASSERT_EQ("y1", iterator->key().ToString());
}
// Now something a bit different, related to "short" keys that
// auto_prefix_mode can omit. See "BUG" section of auto_prefix_mode.
options.comparator = BytewiseComparator();
for (const auto config : {"fixed:2", "capped:2"}) {
ASSERT_OK(SliceTransform::CreateFromString(ConfigOptions(), config,
&options.prefix_extractor));
// FIXME: kHashSearch, etc. requires all keys be InDomain
if (StartsWith(config, "fixed") &&
(table_options.index_type == BlockBasedTableOptions::kHashSearch ||
StartsWith(options.memtable_factory->Name(), "Hash"))) {
continue;
}
DestroyAndReopen(options);
const char* a_end_stuff = "a\xffXYZ";
const char* b_begin_stuff = "b\x00XYZ";
ASSERT_OK(Put("a", large_value));
ASSERT_OK(Put("b", large_value));
ASSERT_OK(Put(Slice(b_begin_stuff, 3), large_value));
ASSERT_OK(Put("c", large_value));
ASSERT_OK(Flush());
// control showing valid optimization with auto_prefix mode
ub = Slice(a_end_stuff, 4);
ro.iterate_upper_bound = &ub;
std::unique_ptr<Iterator> iterator(db_->NewIterator(ro));
iterator->Seek(Slice(a_end_stuff, 2));
ASSERT_FALSE(iterator->Valid());
EXPECT_EQ(0, TestGetAndResetTickerCount(options, hit_stat));
EXPECT_EQ(1, TestGetAndResetTickerCount(options, miss_stat));
ASSERT_OK(iterator->status());
// test, cannot be validly optimized with auto_prefix_mode
ub = Slice(b_begin_stuff, 2);
ro.iterate_upper_bound = &ub;
iterator->Seek(Slice(a_end_stuff, 2));
// !!! BUG !!! See "BUG" section of auto_prefix_mode.
ASSERT_FALSE(iterator->Valid());
EXPECT_EQ(0, TestGetAndResetTickerCount(options, hit_stat));
EXPECT_EQ(1, TestGetAndResetTickerCount(options, miss_stat));
ASSERT_OK(iterator->status());
// To prove that is the wrong result, now use total order seek
ReadOptions tos_ro = ro;
tos_ro.total_order_seek = true;
tos_ro.auto_prefix_mode = false;
iterator.reset(db_->NewIterator(tos_ro));
iterator->Seek(Slice(a_end_stuff, 2));
ASSERT_TRUE(iterator->Valid());
ASSERT_EQ("b", iterator->key().ToString());
EXPECT_EQ(0, TestGetAndResetTickerCount(options, hit_stat));
EXPECT_EQ(0, TestGetAndResetTickerCount(options, miss_stat));
ASSERT_OK(iterator->status());
}
} while (ChangeOptions(kSkipPlainTable));
}
class RenameCurrentTest : public DBTestBase,
public testing::WithParamInterface<std::string> {
public:
RenameCurrentTest()
: DBTestBase("rename_current_test", /*env_do_fsync=*/true),
sync_point_(GetParam()) {}
~RenameCurrentTest() override {}
void SetUp() override {
env_->no_file_overwrite_.store(true, std::memory_order_release);
}
void TearDown() override {
env_->no_file_overwrite_.store(false, std::memory_order_release);
}
void SetupSyncPoints() {
SyncPoint::GetInstance()->DisableProcessing();
SyncPoint::GetInstance()->SetCallBack(sync_point_, [&](void* arg) {
Status* s = reinterpret_cast<Status*>(arg);
assert(s);
*s = Status::IOError("Injected IO error.");
});
}
const std::string sync_point_;
};
INSTANTIATE_TEST_CASE_P(DistributedFS, RenameCurrentTest,
::testing::Values("SetCurrentFile:BeforeRename",
"SetCurrentFile:AfterRename"));
TEST_P(RenameCurrentTest, Open) {
Destroy(last_options_);
Options options = GetDefaultOptions();
options.create_if_missing = true;
SetupSyncPoints();
SyncPoint::GetInstance()->EnableProcessing();
Status s = TryReopen(options);
ASSERT_NOK(s);
SyncPoint::GetInstance()->DisableProcessing();
Reopen(options);
}
TEST_P(RenameCurrentTest, Flush) {
Destroy(last_options_);
Options options = GetDefaultOptions();
options.max_manifest_file_size = 1;
options.create_if_missing = true;
Reopen(options);
ASSERT_OK(Put("key", "value"));
SetupSyncPoints();
SyncPoint::GetInstance()->EnableProcessing();
ASSERT_NOK(Flush());
ASSERT_NOK(Put("foo", "value"));
SyncPoint::GetInstance()->DisableProcessing();
Reopen(options);
ASSERT_EQ("value", Get("key"));
ASSERT_EQ("NOT_FOUND", Get("foo"));
}
TEST_P(RenameCurrentTest, Compaction) {
Destroy(last_options_);
Options options = GetDefaultOptions();
options.max_manifest_file_size = 1;
options.create_if_missing = true;
Reopen(options);
ASSERT_OK(Put("a", "a_value"));
ASSERT_OK(Put("c", "c_value"));
ASSERT_OK(Flush());
ASSERT_OK(Put("b", "b_value"));
ASSERT_OK(Put("d", "d_value"));
ASSERT_OK(Flush());
SetupSyncPoints();
SyncPoint::GetInstance()->EnableProcessing();
ASSERT_NOK(db_->CompactRange(CompactRangeOptions(), /*begin=*/nullptr,
/*end=*/nullptr));
ASSERT_NOK(Put("foo", "value"));
SyncPoint::GetInstance()->DisableProcessing();
Reopen(options);
ASSERT_EQ("NOT_FOUND", Get("foo"));
ASSERT_EQ("d_value", Get("d"));
}
TEST_F(DBTest2, LastLevelTemperature) {
class TestListener : public EventListener {
public:
void OnFileReadFinish(const FileOperationInfo& info) override {
UpdateFileTemperature(info);
}
void OnFileWriteFinish(const FileOperationInfo& info) override {
UpdateFileTemperature(info);
}
void OnFileFlushFinish(const FileOperationInfo& info) override {
UpdateFileTemperature(info);
}
void OnFileSyncFinish(const FileOperationInfo& info) override {
UpdateFileTemperature(info);
}
void OnFileCloseFinish(const FileOperationInfo& info) override {
UpdateFileTemperature(info);
}
bool ShouldBeNotifiedOnFileIO() override { return true; }
std::unordered_map<uint64_t, Temperature> file_temperatures;
private:
void UpdateFileTemperature(const FileOperationInfo& info) {
auto filename = GetFileName(info.path);
uint64_t number;
FileType type;
ASSERT_TRUE(ParseFileName(filename, &number, &type));
if (type == kTableFile) {
MutexLock l(&mutex_);
auto ret = file_temperatures.insert({number, info.temperature});
if (!ret.second) {
// the same file temperature should always be the same for all events
ASSERT_TRUE(ret.first->second == info.temperature);
}
}
}
std::string GetFileName(const std::string& fname) {
auto filename = fname.substr(fname.find_last_of(kFilePathSeparator) + 1);
// workaround only for Windows that the file path could contain both
// Windows FilePathSeparator and '/'
filename = filename.substr(filename.find_last_of('/') + 1);
return filename;
}
port::Mutex mutex_;
};
const int kNumLevels = 7;
const int kLastLevel = kNumLevels - 1;
auto* listener = new TestListener();
Options options = CurrentOptions();
options.bottommost_temperature = Temperature::kWarm;
options.level0_file_num_compaction_trigger = 2;
options.level_compaction_dynamic_level_bytes = true;
options.num_levels = kNumLevels;
options.statistics = CreateDBStatistics();
options.listeners.emplace_back(listener);
Reopen(options);
auto size = GetSstSizeHelper(Temperature::kUnknown);
ASSERT_EQ(size, 0);
size = GetSstSizeHelper(Temperature::kWarm);
ASSERT_EQ(size, 0);
size = GetSstSizeHelper(Temperature::kHot);
ASSERT_EQ(size, 0);
ASSERT_OK(Put("foo", "bar"));
ASSERT_OK(Put("bar", "bar"));
ASSERT_OK(Flush());
ASSERT_OK(Put("foo", "bar"));
ASSERT_OK(Put("bar", "bar"));
ASSERT_OK(Flush());
ASSERT_OK(dbfull()->TEST_WaitForCompact());
get_iostats_context()->Reset();
IOStatsContext* iostats = get_iostats_context();
ColumnFamilyMetaData metadata;
db_->GetColumnFamilyMetaData(&metadata);
ASSERT_EQ(1, metadata.file_count);
SstFileMetaData meta = metadata.levels[kLastLevel].files[0];
ASSERT_EQ(Temperature::kWarm, meta.temperature);
uint64_t number;
FileType type;
ASSERT_TRUE(ParseFileName(meta.name, &number, &type));
ASSERT_EQ(listener->file_temperatures.at(number), meta.temperature);
size = GetSstSizeHelper(Temperature::kUnknown);
ASSERT_EQ(size, 0);
size = GetSstSizeHelper(Temperature::kWarm);
ASSERT_GT(size, 0);
ASSERT_EQ(iostats->file_io_stats_by_temperature.hot_file_read_count, 0);
ASSERT_EQ(iostats->file_io_stats_by_temperature.warm_file_read_count, 0);
ASSERT_EQ(iostats->file_io_stats_by_temperature.hot_file_read_count, 0);
ASSERT_EQ(options.statistics->getTickerCount(HOT_FILE_READ_BYTES), 0);
ASSERT_GT(options.statistics->getTickerCount(WARM_FILE_READ_BYTES), 0);
ASSERT_EQ(options.statistics->getTickerCount(COLD_FILE_READ_BYTES), 0);
ASSERT_EQ("bar", Get("foo"));
ASSERT_EQ(iostats->file_io_stats_by_temperature.hot_file_read_count, 0);
ASSERT_EQ(iostats->file_io_stats_by_temperature.warm_file_read_count, 1);
ASSERT_EQ(iostats->file_io_stats_by_temperature.hot_file_read_count, 0);
ASSERT_EQ(iostats->file_io_stats_by_temperature.hot_file_bytes_read, 0);
ASSERT_GT(iostats->file_io_stats_by_temperature.warm_file_bytes_read, 0);
ASSERT_EQ(iostats->file_io_stats_by_temperature.cold_file_bytes_read, 0);
ASSERT_EQ(options.statistics->getTickerCount(HOT_FILE_READ_BYTES), 0);
ASSERT_GT(options.statistics->getTickerCount(WARM_FILE_READ_BYTES), 0);
ASSERT_EQ(options.statistics->getTickerCount(COLD_FILE_READ_BYTES), 0);
ASSERT_EQ(options.statistics->getTickerCount(HOT_FILE_READ_COUNT), 0);
ASSERT_GT(options.statistics->getTickerCount(WARM_FILE_READ_COUNT), 0);
ASSERT_EQ(options.statistics->getTickerCount(COLD_FILE_READ_COUNT), 0);
// non-bottommost file still has unknown temperature
ASSERT_OK(Put("foo", "bar"));
ASSERT_OK(Put("bar", "bar"));
ASSERT_OK(Flush());
ASSERT_EQ("bar", Get("bar"));
ASSERT_EQ(iostats->file_io_stats_by_temperature.hot_file_read_count, 0);
ASSERT_EQ(iostats->file_io_stats_by_temperature.warm_file_read_count, 1);
ASSERT_EQ(iostats->file_io_stats_by_temperature.hot_file_read_count, 0);
ASSERT_EQ(iostats->file_io_stats_by_temperature.hot_file_bytes_read, 0);
ASSERT_GT(iostats->file_io_stats_by_temperature.warm_file_bytes_read, 0);
ASSERT_EQ(iostats->file_io_stats_by_temperature.cold_file_bytes_read, 0);
ASSERT_EQ(options.statistics->getTickerCount(HOT_FILE_READ_BYTES), 0);
ASSERT_GT(options.statistics->getTickerCount(WARM_FILE_READ_BYTES), 0);
ASSERT_EQ(options.statistics->getTickerCount(COLD_FILE_READ_BYTES), 0);
ASSERT_EQ(options.statistics->getTickerCount(HOT_FILE_READ_COUNT), 0);
ASSERT_GT(options.statistics->getTickerCount(WARM_FILE_READ_COUNT), 0);
ASSERT_EQ(options.statistics->getTickerCount(COLD_FILE_READ_COUNT), 0);
db_->GetColumnFamilyMetaData(&metadata);
ASSERT_EQ(2, metadata.file_count);
meta = metadata.levels[0].files[0];
ASSERT_EQ(Temperature::kUnknown, meta.temperature);
ASSERT_TRUE(ParseFileName(meta.name, &number, &type));
ASSERT_EQ(listener->file_temperatures.at(number), meta.temperature);
meta = metadata.levels[kLastLevel].files[0];
ASSERT_EQ(Temperature::kWarm, meta.temperature);
ASSERT_TRUE(ParseFileName(meta.name, &number, &type));
ASSERT_EQ(listener->file_temperatures.at(number), meta.temperature);
size = GetSstSizeHelper(Temperature::kUnknown);
ASSERT_GT(size, 0);
size = GetSstSizeHelper(Temperature::kWarm);
ASSERT_GT(size, 0);
// reopen and check the information is persisted
Reopen(options);
db_->GetColumnFamilyMetaData(&metadata);
ASSERT_EQ(2, metadata.file_count);
meta = metadata.levels[0].files[0];
ASSERT_EQ(Temperature::kUnknown, meta.temperature);
ASSERT_TRUE(ParseFileName(meta.name, &number, &type));
ASSERT_EQ(listener->file_temperatures.at(number), meta.temperature);
meta = metadata.levels[kLastLevel].files[0];
ASSERT_EQ(Temperature::kWarm, meta.temperature);
ASSERT_TRUE(ParseFileName(meta.name, &number, &type));
ASSERT_EQ(listener->file_temperatures.at(number), meta.temperature);
size = GetSstSizeHelper(Temperature::kUnknown);
ASSERT_GT(size, 0);
size = GetSstSizeHelper(Temperature::kWarm);
ASSERT_GT(size, 0);
// check other non-exist temperatures
size = GetSstSizeHelper(Temperature::kHot);
ASSERT_EQ(size, 0);
size = GetSstSizeHelper(Temperature::kCold);
ASSERT_EQ(size, 0);
std::string prop;
ASSERT_TRUE(dbfull()->GetProperty(
DB::Properties::kLiveSstFilesSizeAtTemperature + std::to_string(22),
&prop));
ASSERT_EQ(std::atoi(prop.c_str()), 0);
Reopen(options);
db_->GetColumnFamilyMetaData(&metadata);
ASSERT_EQ(2, metadata.file_count);
meta = metadata.levels[0].files[0];
ASSERT_EQ(Temperature::kUnknown, meta.temperature);
ASSERT_TRUE(ParseFileName(meta.name, &number, &type));
ASSERT_EQ(listener->file_temperatures.at(number), meta.temperature);
meta = metadata.levels[kLastLevel].files[0];
ASSERT_EQ(Temperature::kWarm, meta.temperature);
ASSERT_TRUE(ParseFileName(meta.name, &number, &type));
ASSERT_EQ(listener->file_temperatures.at(number), meta.temperature);
}
TEST_F(DBTest2, LastLevelTemperatureUniversal) {
const int kTriggerNum = 3;
const int kNumLevels = 5;
const int kBottommostLevel = kNumLevels - 1;
Options options = CurrentOptions();
options.compaction_style = kCompactionStyleUniversal;
options.level0_file_num_compaction_trigger = kTriggerNum;
options.num_levels = kNumLevels;
options.statistics = CreateDBStatistics();
DestroyAndReopen(options);
auto size = GetSstSizeHelper(Temperature::kUnknown);
ASSERT_EQ(size, 0);
size = GetSstSizeHelper(Temperature::kWarm);
ASSERT_EQ(size, 0);
size = GetSstSizeHelper(Temperature::kHot);
ASSERT_EQ(size, 0);
get_iostats_context()->Reset();
IOStatsContext* iostats = get_iostats_context();
for (int i = 0; i < kTriggerNum; i++) {
ASSERT_OK(Put("foo", "bar"));
ASSERT_OK(Put("bar", "bar"));
ASSERT_OK(Flush());
}
ASSERT_OK(dbfull()->TEST_WaitForCompact());
ColumnFamilyMetaData metadata;
db_->GetColumnFamilyMetaData(&metadata);
ASSERT_EQ(1, metadata.file_count);
ASSERT_EQ(Temperature::kUnknown,
metadata.levels[kBottommostLevel].files[0].temperature);
size = GetSstSizeHelper(Temperature::kUnknown);
ASSERT_GT(size, 0);
size = GetSstSizeHelper(Temperature::kWarm);
ASSERT_EQ(size, 0);
ASSERT_EQ(iostats->file_io_stats_by_temperature.hot_file_read_count, 0);
ASSERT_EQ(iostats->file_io_stats_by_temperature.warm_file_read_count, 0);
ASSERT_EQ(iostats->file_io_stats_by_temperature.cold_file_read_count, 0);
ASSERT_EQ(options.statistics->getTickerCount(HOT_FILE_READ_BYTES), 0);
ASSERT_EQ(options.statistics->getTickerCount(WARM_FILE_READ_BYTES), 0);
ASSERT_EQ(options.statistics->getTickerCount(COLD_FILE_READ_BYTES), 0);
ASSERT_EQ(options.statistics->getTickerCount(HOT_FILE_READ_COUNT), 0);
ASSERT_EQ(options.statistics->getTickerCount(WARM_FILE_READ_COUNT), 0);
ASSERT_EQ(options.statistics->getTickerCount(COLD_FILE_READ_COUNT), 0);
ASSERT_EQ("bar", Get("foo"));
ASSERT_EQ(iostats->file_io_stats_by_temperature.hot_file_read_count, 0);
ASSERT_EQ(iostats->file_io_stats_by_temperature.warm_file_read_count, 0);
ASSERT_EQ(iostats->file_io_stats_by_temperature.hot_file_read_count, 0);
ASSERT_EQ(iostats->file_io_stats_by_temperature.hot_file_bytes_read, 0);
ASSERT_EQ(iostats->file_io_stats_by_temperature.warm_file_bytes_read, 0);
ASSERT_EQ(iostats->file_io_stats_by_temperature.cold_file_bytes_read, 0);
ASSERT_EQ(options.statistics->getTickerCount(HOT_FILE_READ_BYTES), 0);
ASSERT_EQ(options.statistics->getTickerCount(WARM_FILE_READ_BYTES), 0);
ASSERT_EQ(options.statistics->getTickerCount(COLD_FILE_READ_BYTES), 0);
ASSERT_EQ(options.statistics->getTickerCount(HOT_FILE_READ_COUNT), 0);
ASSERT_EQ(options.statistics->getTickerCount(WARM_FILE_READ_COUNT), 0);
ASSERT_EQ(options.statistics->getTickerCount(COLD_FILE_READ_COUNT), 0);
ASSERT_OK(Put("foo", "bar"));
ASSERT_OK(Put("bar", "bar"));
ASSERT_OK(Flush());
ASSERT_OK(dbfull()->TEST_WaitForCompact());
db_->GetColumnFamilyMetaData(&metadata);
ASSERT_EQ(2, metadata.file_count);
ASSERT_EQ(Temperature::kUnknown, metadata.levels[0].files[0].temperature);
size = GetSstSizeHelper(Temperature::kUnknown);
ASSERT_GT(size, 0);
size = GetSstSizeHelper(Temperature::kWarm);
ASSERT_EQ(size, 0);
// Update bottommost temperature
options.bottommost_temperature = Temperature::kWarm;
Reopen(options);
db_->GetColumnFamilyMetaData(&metadata);
// Should not impact existing ones
ASSERT_EQ(Temperature::kUnknown,
metadata.levels[kBottommostLevel].files[0].temperature);
size = GetSstSizeHelper(Temperature::kUnknown);
ASSERT_GT(size, 0);
size = GetSstSizeHelper(Temperature::kWarm);
ASSERT_EQ(size, 0);
// new generated file should have the new settings
ASSERT_OK(db_->CompactRange(CompactRangeOptions(), nullptr, nullptr));
db_->GetColumnFamilyMetaData(&metadata);
ASSERT_EQ(1, metadata.file_count);
ASSERT_EQ(Temperature::kWarm,
metadata.levels[kBottommostLevel].files[0].temperature);
size = GetSstSizeHelper(Temperature::kUnknown);
ASSERT_EQ(size, 0);
size = GetSstSizeHelper(Temperature::kWarm);
ASSERT_GT(size, 0);
ASSERT_EQ(options.statistics->getTickerCount(HOT_FILE_READ_BYTES), 0);
ASSERT_GT(options.statistics->getTickerCount(WARM_FILE_READ_BYTES), 0);
ASSERT_EQ(options.statistics->getTickerCount(COLD_FILE_READ_BYTES), 0);
ASSERT_EQ(options.statistics->getTickerCount(HOT_FILE_READ_COUNT), 0);
ASSERT_GT(options.statistics->getTickerCount(WARM_FILE_READ_COUNT), 0);
ASSERT_EQ(options.statistics->getTickerCount(COLD_FILE_READ_COUNT), 0);
// non-bottommost file still has unknown temperature
ASSERT_OK(Put("foo", "bar"));
ASSERT_OK(Put("bar", "bar"));
ASSERT_OK(Flush());
ASSERT_OK(dbfull()->TEST_WaitForCompact());
db_->GetColumnFamilyMetaData(&metadata);
ASSERT_EQ(2, metadata.file_count);
ASSERT_EQ(Temperature::kUnknown, metadata.levels[0].files[0].temperature);
size = GetSstSizeHelper(Temperature::kUnknown);
ASSERT_GT(size, 0);
size = GetSstSizeHelper(Temperature::kWarm);
ASSERT_GT(size, 0);
// check other non-exist temperatures
size = GetSstSizeHelper(Temperature::kHot);
ASSERT_EQ(size, 0);
size = GetSstSizeHelper(Temperature::kCold);
ASSERT_EQ(size, 0);
std::string prop;
ASSERT_TRUE(dbfull()->GetProperty(
DB::Properties::kLiveSstFilesSizeAtTemperature + std::to_string(22),
&prop));
ASSERT_EQ(std::atoi(prop.c_str()), 0);
// Update bottommost temperature dynamically with SetOptions
auto s = db_->SetOptions({{"last_level_temperature", "kCold"}});
ASSERT_OK(s);
ASSERT_EQ(db_->GetOptions().bottommost_temperature, Temperature::kCold);
db_->GetColumnFamilyMetaData(&metadata);
// Should not impact the existing files
ASSERT_EQ(Temperature::kWarm,
metadata.levels[kBottommostLevel].files[0].temperature);
size = GetSstSizeHelper(Temperature::kUnknown);
ASSERT_GT(size, 0);
size = GetSstSizeHelper(Temperature::kWarm);
ASSERT_GT(size, 0);
size = GetSstSizeHelper(Temperature::kCold);
ASSERT_EQ(size, 0);
// new generated files should have the new settings
ASSERT_OK(db_->CompactRange(CompactRangeOptions(), nullptr, nullptr));
db_->GetColumnFamilyMetaData(&metadata);
ASSERT_EQ(1, metadata.file_count);
ASSERT_EQ(Temperature::kCold,
metadata.levels[kBottommostLevel].files[0].temperature);
size = GetSstSizeHelper(Temperature::kUnknown);
ASSERT_EQ(size, 0);
size = GetSstSizeHelper(Temperature::kWarm);
ASSERT_EQ(size, 0);
size = GetSstSizeHelper(Temperature::kCold);
ASSERT_GT(size, 0);
// kLastTemperature is an invalid temperature
options.bottommost_temperature = Temperature::kLastTemperature;
s = TryReopen(options);
ASSERT_TRUE(s.IsIOError());
}
TEST_F(DBTest2, LastLevelStatistics) {
Options options = CurrentOptions();
options.bottommost_temperature = Temperature::kWarm;
options.default_temperature = Temperature::kHot;
options.level0_file_num_compaction_trigger = 2;
options.level_compaction_dynamic_level_bytes = true;
options.statistics = CreateDBStatistics();
Reopen(options);
// generate 1 sst on level 0
ASSERT_OK(Put("foo", "bar"));
ASSERT_OK(Put("bar", "bar"));
ASSERT_OK(Flush());
ASSERT_EQ("bar", Get("bar"));
ASSERT_GT(options.statistics->getTickerCount(NON_LAST_LEVEL_READ_BYTES), 0);
ASSERT_GT(options.statistics->getTickerCount(NON_LAST_LEVEL_READ_COUNT), 0);
ASSERT_EQ(options.statistics->getTickerCount(NON_LAST_LEVEL_READ_BYTES),
options.statistics->getTickerCount(HOT_FILE_READ_BYTES));
ASSERT_EQ(options.statistics->getTickerCount(NON_LAST_LEVEL_READ_COUNT),
options.statistics->getTickerCount(HOT_FILE_READ_COUNT));
ASSERT_EQ(options.statistics->getTickerCount(LAST_LEVEL_READ_BYTES), 0);
ASSERT_EQ(options.statistics->getTickerCount(LAST_LEVEL_READ_COUNT), 0);
// 2nd flush to trigger compaction
ASSERT_OK(Put("foo", "bar"));
ASSERT_OK(Put("bar", "bar"));
ASSERT_OK(Flush());
ASSERT_OK(dbfull()->TEST_WaitForCompact());
ASSERT_EQ("bar", Get("bar"));
ASSERT_EQ(options.statistics->getTickerCount(NON_LAST_LEVEL_READ_BYTES),
options.statistics->getTickerCount(HOT_FILE_READ_BYTES));
ASSERT_EQ(options.statistics->getTickerCount(NON_LAST_LEVEL_READ_COUNT),
options.statistics->getTickerCount(HOT_FILE_READ_COUNT));
ASSERT_EQ(options.statistics->getTickerCount(LAST_LEVEL_READ_BYTES),
options.statistics->getTickerCount(WARM_FILE_READ_BYTES));
ASSERT_EQ(options.statistics->getTickerCount(LAST_LEVEL_READ_COUNT),
options.statistics->getTickerCount(WARM_FILE_READ_COUNT));
auto pre_bytes =
options.statistics->getTickerCount(NON_LAST_LEVEL_READ_BYTES);
auto pre_count =
options.statistics->getTickerCount(NON_LAST_LEVEL_READ_COUNT);
// 3rd flush to generate 1 sst on level 0
ASSERT_OK(Put("foo", "bar"));
ASSERT_OK(Put("bar", "bar"));
ASSERT_OK(Flush());
ASSERT_EQ("bar", Get("bar"));
ASSERT_GT(options.statistics->getTickerCount(NON_LAST_LEVEL_READ_BYTES),
pre_bytes);
ASSERT_GT(options.statistics->getTickerCount(NON_LAST_LEVEL_READ_COUNT),
pre_count);
ASSERT_EQ(options.statistics->getTickerCount(NON_LAST_LEVEL_READ_BYTES),
options.statistics->getTickerCount(HOT_FILE_READ_BYTES));
ASSERT_EQ(options.statistics->getTickerCount(NON_LAST_LEVEL_READ_COUNT),
options.statistics->getTickerCount(HOT_FILE_READ_COUNT));
ASSERT_EQ(options.statistics->getTickerCount(LAST_LEVEL_READ_BYTES),
options.statistics->getTickerCount(WARM_FILE_READ_BYTES));
ASSERT_EQ(options.statistics->getTickerCount(LAST_LEVEL_READ_COUNT),
options.statistics->getTickerCount(WARM_FILE_READ_COUNT));
// Not a realistic setting to make last level kWarm and default temp kCold.
// This is just for testing default temp can be reset on reopen while the
// last level temp is consistent across DB reopen because those file's temp
// are persisted in manifest.
options.default_temperature = Temperature::kCold;
ASSERT_OK(options.statistics->Reset());
Reopen(options);
ASSERT_EQ("bar", Get("bar"));
ASSERT_EQ(0, options.statistics->getTickerCount(HOT_FILE_READ_BYTES));
ASSERT_EQ(options.statistics->getTickerCount(NON_LAST_LEVEL_READ_BYTES),
options.statistics->getTickerCount(COLD_FILE_READ_BYTES));
ASSERT_EQ(options.statistics->getTickerCount(NON_LAST_LEVEL_READ_COUNT),
options.statistics->getTickerCount(COLD_FILE_READ_COUNT));
ASSERT_EQ(options.statistics->getTickerCount(LAST_LEVEL_READ_BYTES),
options.statistics->getTickerCount(WARM_FILE_READ_BYTES));
ASSERT_EQ(options.statistics->getTickerCount(LAST_LEVEL_READ_COUNT),
options.statistics->getTickerCount(WARM_FILE_READ_COUNT));
}
TEST_F(DBTest2, CheckpointFileTemperature) {
class NoLinkTestFS : public FileTemperatureTestFS {
using FileTemperatureTestFS::FileTemperatureTestFS;
IOStatus LinkFile(const std::string&, const std::string&, const IOOptions&,
IODebugContext*) override {
// return not supported to force checkpoint copy the file instead of just
// link
return IOStatus::NotSupported();
}
};
auto test_fs = std::make_shared<NoLinkTestFS>(env_->GetFileSystem());
std::unique_ptr<Env> env(new CompositeEnvWrapper(env_, test_fs));
Options options = CurrentOptions();
options.bottommost_temperature = Temperature::kWarm;
// set dynamic_level to true so the compaction would compact the data to the
// last level directly which will have the last_level_temperature
options.level_compaction_dynamic_level_bytes = true;
options.level0_file_num_compaction_trigger = 2;
options.env = env.get();
Reopen(options);
// generate a bottommost file and a non-bottommost file
ASSERT_OK(Put("foo", "bar"));
ASSERT_OK(Put("bar", "bar"));
ASSERT_OK(Flush());
ASSERT_OK(Put("foo", "bar"));
ASSERT_OK(Put("bar", "bar"));
ASSERT_OK(Flush());
ASSERT_OK(dbfull()->TEST_WaitForCompact());
ASSERT_OK(Put("foo", "bar"));
ASSERT_OK(Put("bar", "bar"));
ASSERT_OK(Flush());
auto size = GetSstSizeHelper(Temperature::kWarm);
ASSERT_GT(size, 0);
std::map<uint64_t, Temperature> temperatures;
std::vector<LiveFileStorageInfo> infos;
ASSERT_OK(
dbfull()->GetLiveFilesStorageInfo(LiveFilesStorageInfoOptions(), &infos));
for (auto info : infos) {
temperatures.emplace(info.file_number, info.temperature);
}
test_fs->PopRequestedSstFileTemperatures();
Checkpoint* checkpoint;
ASSERT_OK(Checkpoint::Create(db_, &checkpoint));
ASSERT_OK(
checkpoint->CreateCheckpoint(dbname_ + kFilePathSeparator + "tempcp"));
// checking src file src_temperature hints: 2 sst files: 1 sst is kWarm,
// another is kUnknown
std::vector<std::pair<uint64_t, Temperature>> requested_temps;
test_fs->PopRequestedSstFileTemperatures(&requested_temps);
// Two requests
ASSERT_EQ(requested_temps.size(), 2);
std::set<uint64_t> distinct_requests;
for (const auto& requested_temp : requested_temps) {
// Matching manifest temperatures
ASSERT_EQ(temperatures.at(requested_temp.first), requested_temp.second);
distinct_requests.insert(requested_temp.first);
}
// Each request to distinct file
ASSERT_EQ(distinct_requests.size(), requested_temps.size());
delete checkpoint;
Close();
}
TEST_F(DBTest2, FileTemperatureManifestFixup) {
auto test_fs = std::make_shared<FileTemperatureTestFS>(env_->GetFileSystem());
std::unique_ptr<Env> env(new CompositeEnvWrapper(env_, test_fs));
Options options = CurrentOptions();
options.bottommost_temperature = Temperature::kWarm;
// set dynamic_level to true so the compaction would compact the data to the
// last level directly which will have the last_level_temperature
options.level_compaction_dynamic_level_bytes = true;
options.level0_file_num_compaction_trigger = 2;
options.env = env.get();
std::vector<std::string> cfs = {/*"default",*/ "test1", "test2"};
CreateAndReopenWithCF(cfs, options);
// Needed for later re-opens (weird)
cfs.insert(cfs.begin(), kDefaultColumnFamilyName);
// Generate a bottommost file in all CFs
for (int cf = 0; cf < 3; ++cf) {
ASSERT_OK(Put(cf, "a", "val"));
ASSERT_OK(Put(cf, "c", "val"));
ASSERT_OK(Flush(cf));
ASSERT_OK(Put(cf, "b", "val"));
ASSERT_OK(Put(cf, "d", "val"));
ASSERT_OK(Flush(cf));
}
ASSERT_OK(dbfull()->TEST_WaitForCompact());
// verify
ASSERT_GT(GetSstSizeHelper(Temperature::kWarm), 0);
ASSERT_EQ(GetSstSizeHelper(Temperature::kUnknown), 0);
ASSERT_EQ(GetSstSizeHelper(Temperature::kCold), 0);
ASSERT_EQ(GetSstSizeHelper(Temperature::kHot), 0);
// Generate a non-bottommost file in all CFs
for (int cf = 0; cf < 3; ++cf) {
ASSERT_OK(Put(cf, "e", "val"));
ASSERT_OK(Flush(cf));
}
// re-verify
ASSERT_GT(GetSstSizeHelper(Temperature::kWarm), 0);
// Not supported: ASSERT_GT(GetSstSizeHelper(Temperature::kUnknown), 0);
ASSERT_EQ(GetSstSizeHelper(Temperature::kCold), 0);
ASSERT_EQ(GetSstSizeHelper(Temperature::kHot), 0);
// Now change FS temperature on bottommost file(s) to kCold
std::map<uint64_t, Temperature> current_temps;
test_fs->CopyCurrentSstFileTemperatures(&current_temps);
for (auto e : current_temps) {
if (e.second == Temperature::kWarm) {
test_fs->OverrideSstFileTemperature(e.first, Temperature::kCold);
}
}
// Metadata not yet updated
ASSERT_EQ(Get("a"), "val");
ASSERT_EQ(GetSstSizeHelper(Temperature::kCold), 0);
// Update with Close and UpdateManifestForFilesState, but first save cf
// descriptors
std::vector<ColumnFamilyDescriptor> column_families;
for (size_t i = 0; i < handles_.size(); ++i) {
ColumnFamilyDescriptor cfdescriptor;
handles_[i]->GetDescriptor(&cfdescriptor).PermitUncheckedError();
column_families.push_back(cfdescriptor);
}
Close();
experimental::UpdateManifestForFilesStateOptions update_opts;
update_opts.update_temperatures = true;
ASSERT_OK(experimental::UpdateManifestForFilesState(
options, dbname_, column_families, update_opts));
// Re-open and re-verify after update
ReopenWithColumnFamilies(cfs, options);
ASSERT_GT(GetSstSizeHelper(Temperature::kCold), 0);
// Not supported: ASSERT_GT(GetSstSizeHelper(Temperature::kUnknown), 0);
ASSERT_EQ(GetSstSizeHelper(Temperature::kWarm), 0);
ASSERT_EQ(GetSstSizeHelper(Temperature::kHot), 0);
// Change kUnknown to kHot
test_fs->CopyCurrentSstFileTemperatures(&current_temps);
for (auto e : current_temps) {
if (e.second == Temperature::kUnknown) {
test_fs->OverrideSstFileTemperature(e.first, Temperature::kHot);
}
}
// Update with Close and UpdateManifestForFilesState
Close();
ASSERT_OK(experimental::UpdateManifestForFilesState(
options, dbname_, column_families, update_opts));
// Re-open and re-verify after update
ReopenWithColumnFamilies(cfs, options);
ASSERT_GT(GetSstSizeHelper(Temperature::kCold), 0);
ASSERT_EQ(GetSstSizeHelper(Temperature::kUnknown), 0);
ASSERT_EQ(GetSstSizeHelper(Temperature::kWarm), 0);
ASSERT_GT(GetSstSizeHelper(Temperature::kHot), 0);
Close();
}
// WAL recovery mode is WALRecoveryMode::kPointInTimeRecovery.
TEST_F(DBTest2, PointInTimeRecoveryWithIOErrorWhileReadingWal) {
Options options = CurrentOptions();
DestroyAndReopen(options);
ASSERT_OK(Put("foo", "value0"));
Close();
SyncPoint::GetInstance()->DisableProcessing();
SyncPoint::GetInstance()->ClearAllCallBacks();
bool should_inject_error = false;
SyncPoint::GetInstance()->SetCallBack(
"DBImpl::RecoverLogFiles:BeforeReadWal",
[&](void* /*arg*/) { should_inject_error = true; });
SyncPoint::GetInstance()->SetCallBack(
"LogReader::ReadMore:AfterReadFile", [&](void* arg) {
if (should_inject_error) {
ASSERT_NE(nullptr, arg);
*reinterpret_cast<Status*>(arg) = Status::IOError("Injected IOError");
}
});
SyncPoint::GetInstance()->EnableProcessing();
options.avoid_flush_during_recovery = true;
options.wal_recovery_mode = WALRecoveryMode::kPointInTimeRecovery;
Status s = TryReopen(options);
ASSERT_TRUE(s.IsIOError());
}
TEST_F(DBTest2, PointInTimeRecoveryWithSyncFailureInCFCreation) {
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->LoadDependency(
{{"DBImpl::BackgroundCallFlush:Start:1",
"PointInTimeRecoveryWithSyncFailureInCFCreation:1"},
{"PointInTimeRecoveryWithSyncFailureInCFCreation:2",
"DBImpl::BackgroundCallFlush:Start:2"}});
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
CreateColumnFamilies({"test1"}, Options());
ASSERT_OK(Put("foo", "bar"));
// Creating a CF when a flush is going on, log is synced but the
// closed log file is not synced and corrupted.
port::Thread flush_thread([&]() { ASSERT_NOK(Flush()); });
TEST_SYNC_POINT("PointInTimeRecoveryWithSyncFailureInCFCreation:1");
CreateColumnFamilies({"test2"}, Options());
env_->corrupt_in_sync_ = true;
TEST_SYNC_POINT("PointInTimeRecoveryWithSyncFailureInCFCreation:2");
flush_thread.join();
env_->corrupt_in_sync_ = false;
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->DisableProcessing();
// Reopening the DB should not corrupt anything
Options options = CurrentOptions();
options.wal_recovery_mode = WALRecoveryMode::kPointInTimeRecovery;
ReopenWithColumnFamilies({"default", "test1", "test2"}, options);
}
TEST_F(DBTest2, SortL0FilesByEpochNumber) {
Options options = CurrentOptions();
options.num_levels = 1;
options.compaction_style = kCompactionStyleUniversal;
DestroyAndReopen(options);
// Set up L0 files to be sorted by their epoch_number
ASSERT_OK(Put("key1", "seq1"));
SstFileWriter sst_file_writer{EnvOptions(), options};
std::string external_file1 = dbname_ + "/test_files1.sst";
std::string external_file2 = dbname_ + "/test_files2.sst";
ASSERT_OK(sst_file_writer.Open(external_file1));
ASSERT_OK(sst_file_writer.Put("key2", "seq0"));
ASSERT_OK(sst_file_writer.Finish());
ASSERT_OK(sst_file_writer.Open(external_file2));
ASSERT_OK(sst_file_writer.Put("key3", "seq0"));
ASSERT_OK(sst_file_writer.Finish());
ASSERT_OK(Put("key4", "seq2"));
ASSERT_OK(Flush());
auto* handle = db_->DefaultColumnFamily();
ASSERT_OK(db_->IngestExternalFile(handle, {external_file1, external_file2},
IngestExternalFileOptions()));
// To verify L0 files are sorted by epoch_number in descending order
// instead of largest_seqno
std::vector<FileMetaData*> level0_files = GetLevelFileMetadatas(0 /* level*/);
ASSERT_EQ(level0_files.size(), 3);
EXPECT_EQ(level0_files[0]->epoch_number, 3);
EXPECT_EQ(level0_files[0]->fd.largest_seqno, 0);
ASSERT_EQ(level0_files[0]->num_entries, 1);
ASSERT_TRUE(level0_files[0]->largest.user_key() == Slice("key3"));
EXPECT_EQ(level0_files[1]->epoch_number, 2);
EXPECT_EQ(level0_files[1]->fd.largest_seqno, 0);
ASSERT_EQ(level0_files[1]->num_entries, 1);
ASSERT_TRUE(level0_files[1]->largest.user_key() == Slice("key2"));
EXPECT_EQ(level0_files[2]->epoch_number, 1);
EXPECT_EQ(level0_files[2]->fd.largest_seqno, 2);
ASSERT_EQ(level0_files[2]->num_entries, 2);
ASSERT_TRUE(level0_files[2]->largest.user_key() == Slice("key4"));
ASSERT_TRUE(level0_files[2]->smallest.user_key() == Slice("key1"));
// To verify compacted file is assigned with the minimum epoch_number
// among input files'
ASSERT_OK(db_->CompactRange(CompactRangeOptions(), nullptr, nullptr));
level0_files = GetLevelFileMetadatas(0 /* level*/);
ASSERT_EQ(level0_files.size(), 1);
EXPECT_EQ(level0_files[0]->epoch_number, 1);
ASSERT_EQ(level0_files[0]->num_entries, 4);
ASSERT_TRUE(level0_files[0]->largest.user_key() == Slice("key4"));
ASSERT_TRUE(level0_files[0]->smallest.user_key() == Slice("key1"));
}
TEST_F(DBTest2, SameEpochNumberAfterCompactRangeChangeLevel) {
Options options = CurrentOptions();
options.num_levels = 7;
options.compaction_style = CompactionStyle::kCompactionStyleLevel;
options.disable_auto_compactions = true;
DestroyAndReopen(options);
// Set up the file in L1 to be moved to L0 in later step of CompactRange()
ASSERT_OK(Put("key1", "seq1"));
ASSERT_OK(Flush());
MoveFilesToLevel(1, 0);
std::vector<FileMetaData*> level0_files = GetLevelFileMetadatas(0 /* level*/);
ASSERT_EQ(level0_files.size(), 0);
std::vector<FileMetaData*> level1_files = GetLevelFileMetadatas(1 /* level*/);
ASSERT_EQ(level1_files.size(), 1);
std::vector<FileMetaData*> level2_files = GetLevelFileMetadatas(2 /* level*/);
ASSERT_EQ(level2_files.size(), 0);
ASSERT_EQ(level1_files[0]->epoch_number, 1);
// To verify CompactRange() moving file to L0 still keeps the file's
// epoch_number
CompactRangeOptions croptions;
croptions.change_level = true;
croptions.target_level = 0;
ASSERT_OK(db_->CompactRange(croptions, nullptr, nullptr));
level0_files = GetLevelFileMetadatas(0 /* level*/);
level1_files = GetLevelFileMetadatas(1 /* level*/);
ASSERT_EQ(level0_files.size(), 1);
ASSERT_EQ(level1_files.size(), 0);
EXPECT_EQ(level0_files[0]->epoch_number, 1);
ASSERT_EQ(level0_files[0]->num_entries, 1);
ASSERT_TRUE(level0_files[0]->largest.user_key() == Slice("key1"));
}
TEST_F(DBTest2, RecoverEpochNumber) {
for (bool allow_ingest_behind : {true, false}) {
Options options = CurrentOptions();
options.allow_ingest_behind = allow_ingest_behind;
options.num_levels = 7;
options.compaction_style = kCompactionStyleLevel;
options.disable_auto_compactions = true;
DestroyAndReopen(options);
CreateAndReopenWithCF({"cf1"}, options);
VersionSet* versions = dbfull()->GetVersionSet();
assert(versions);
const ColumnFamilyData* default_cf =
versions->GetColumnFamilySet()->GetDefault();
const ColumnFamilyData* cf1 =
versions->GetColumnFamilySet()->GetColumnFamily("cf1");
// Set up files in default CF to recover in later step
ASSERT_OK(Put("key1", "epoch1"));
ASSERT_OK(Flush());
MoveFilesToLevel(1 /* level*/, 0 /* cf*/);
ASSERT_OK(Put("key2", "epoch2"));
ASSERT_OK(Flush());
std::vector<FileMetaData*> level0_files =
GetLevelFileMetadatas(0 /* level*/);
ASSERT_EQ(level0_files.size(), 1);
ASSERT_EQ(level0_files[0]->epoch_number,
allow_ingest_behind
? 2 + kReservedEpochNumberForFileIngestedBehind
: 2);
ASSERT_EQ(level0_files[0]->num_entries, 1);
ASSERT_TRUE(level0_files[0]->largest.user_key() == Slice("key2"));
std::vector<FileMetaData*> level1_files =
GetLevelFileMetadatas(1 /* level*/);
ASSERT_EQ(level1_files.size(), 1);
ASSERT_EQ(level1_files[0]->epoch_number,
allow_ingest_behind
? 1 + kReservedEpochNumberForFileIngestedBehind
: 1);
ASSERT_EQ(level1_files[0]->num_entries, 1);
ASSERT_TRUE(level1_files[0]->largest.user_key() == Slice("key1"));
// Set up files in cf1 to recover in later step
ASSERT_OK(Put(1 /* cf */, "cf1_key1", "epoch1"));
ASSERT_OK(Flush(1 /* cf */));
std::vector<FileMetaData*> level0_files_cf1 =
GetLevelFileMetadatas(0 /* level*/, 1 /* cf*/);
ASSERT_EQ(level0_files_cf1.size(), 1);
ASSERT_EQ(level0_files_cf1[0]->epoch_number,
allow_ingest_behind
? 1 + kReservedEpochNumberForFileIngestedBehind
: 1);
ASSERT_EQ(level0_files_cf1[0]->num_entries, 1);
ASSERT_TRUE(level0_files_cf1[0]->largest.user_key() == Slice("cf1_key1"));
ASSERT_EQ(default_cf->GetNextEpochNumber(),
allow_ingest_behind
? 3 + kReservedEpochNumberForFileIngestedBehind
: 3);
ASSERT_EQ(cf1->GetNextEpochNumber(),
allow_ingest_behind
? 2 + kReservedEpochNumberForFileIngestedBehind
: 2);
// To verify epoch_number of files of different levels/CFs are
// persisted and recovered correctly
ReopenWithColumnFamilies({"default", "cf1"}, options);
versions = dbfull()->GetVersionSet();
assert(versions);
default_cf = versions->GetColumnFamilySet()->GetDefault();
cf1 = versions->GetColumnFamilySet()->GetColumnFamily("cf1");
level0_files = GetLevelFileMetadatas(0 /* level*/);
ASSERT_EQ(level0_files.size(), 1);
EXPECT_EQ(level0_files[0]->epoch_number,
allow_ingest_behind
? 2 + kReservedEpochNumberForFileIngestedBehind
: 2);
ASSERT_EQ(level0_files[0]->num_entries, 1);
ASSERT_TRUE(level0_files[0]->largest.user_key() == Slice("key2"));
level1_files = GetLevelFileMetadatas(1 /* level*/);
ASSERT_EQ(level1_files.size(), 1);
EXPECT_EQ(level1_files[0]->epoch_number,
allow_ingest_behind
? 1 + kReservedEpochNumberForFileIngestedBehind
: 1);
ASSERT_EQ(level1_files[0]->num_entries, 1);
ASSERT_TRUE(level1_files[0]->largest.user_key() == Slice("key1"));
level0_files_cf1 = GetLevelFileMetadatas(0 /* level*/, 1 /* cf*/);
ASSERT_EQ(level0_files_cf1.size(), 1);
EXPECT_EQ(level0_files_cf1[0]->epoch_number,
allow_ingest_behind
? 1 + kReservedEpochNumberForFileIngestedBehind
: 1);
ASSERT_EQ(level0_files_cf1[0]->num_entries, 1);
ASSERT_TRUE(level0_files_cf1[0]->largest.user_key() == Slice("cf1_key1"));
// To verify next epoch number is recovered correctly
EXPECT_EQ(default_cf->GetNextEpochNumber(),
allow_ingest_behind
? 3 + kReservedEpochNumberForFileIngestedBehind
: 3);
EXPECT_EQ(cf1->GetNextEpochNumber(),
allow_ingest_behind
? 2 + kReservedEpochNumberForFileIngestedBehind
: 2);
}
}
TEST_F(DBTest2, RenameDirectory) {
Options options = CurrentOptions();
DestroyAndReopen(options);
ASSERT_OK(Put("foo", "value0"));
Close();
auto old_dbname = dbname_;
auto new_dbname = dbname_ + "_2";
EXPECT_OK(env_->RenameFile(dbname_, new_dbname));
options.create_if_missing = false;
dbname_ = new_dbname;
ASSERT_OK(TryReopen(options));
ASSERT_EQ("value0", Get("foo"));
Destroy(options);
dbname_ = old_dbname;
}
TEST_F(DBTest2, SstUniqueIdVerifyBackwardCompatible) {
const int kNumSst = 3;
const int kLevel0Trigger = 4;
auto options = CurrentOptions();
options.level0_file_num_compaction_trigger = kLevel0Trigger;
options.statistics = CreateDBStatistics();
// Skip for now
options.verify_sst_unique_id_in_manifest = false;
Reopen(options);
std::atomic_int skipped = 0;
std::atomic_int passed = 0;
SyncPoint::GetInstance()->SetCallBack(
"BlockBasedTable::Open::SkippedVerifyUniqueId",
[&](void* /*arg*/) { skipped++; });
SyncPoint::GetInstance()->SetCallBack(
"BlockBasedTable::Open::PassedVerifyUniqueId",
[&](void* /*arg*/) { passed++; });
SyncPoint::GetInstance()->EnableProcessing();
// generate a few SSTs
for (int i = 0; i < kNumSst; i++) {
for (int j = 0; j < 100; j++) {
ASSERT_OK(Put(Key(i * 10 + j), "value"));
}
ASSERT_OK(Flush());
}
// Verification has been skipped on files so far
EXPECT_EQ(skipped, kNumSst);
EXPECT_EQ(passed, 0);
// Reopen with verification
options.verify_sst_unique_id_in_manifest = true;
skipped = 0;
passed = 0;
Reopen(options);
EXPECT_EQ(skipped, 0);
EXPECT_EQ(passed, kNumSst);
// Now simulate no unique id in manifest for next file
// NOTE: this only works for loading manifest from disk,
// not in-memory manifest, so we need to re-open below.
SyncPoint::GetInstance()->SetCallBack(
"VersionEdit::EncodeTo:UniqueId", [&](void* arg) {
auto unique_id = static_cast<UniqueId64x2*>(arg);
// remove id before writing it to manifest
(*unique_id)[0] = 0;
(*unique_id)[1] = 0;
});
// test compaction generated Sst
for (int i = kNumSst; i < kLevel0Trigger; i++) {
for (int j = 0; j < 100; j++) {
ASSERT_OK(Put(Key(i * 10 + j), "value"));
}
ASSERT_OK(Flush());
}
ASSERT_OK(dbfull()->TEST_WaitForCompact());
ASSERT_EQ("0,1", FilesPerLevel(0));
// Reopen (with verification)
ASSERT_TRUE(options.verify_sst_unique_id_in_manifest);
skipped = 0;
passed = 0;
Reopen(options);
EXPECT_EQ(skipped, 1);
EXPECT_EQ(passed, 0);
}
TEST_F(DBTest2, SstUniqueIdVerify) {
const int kNumSst = 3;
const int kLevel0Trigger = 4;
auto options = CurrentOptions();
options.level0_file_num_compaction_trigger = kLevel0Trigger;
// Allow mismatch for now
options.verify_sst_unique_id_in_manifest = false;
Reopen(options);
SyncPoint::GetInstance()->SetCallBack(
"PropertyBlockBuilder::AddTableProperty:Start", [&](void* props_vs) {
auto props = static_cast<TableProperties*>(props_vs);
// update table property session_id to a different one, which
// changes unique ID
props->db_session_id = DBImpl::GenerateDbSessionId(nullptr);
});
SyncPoint::GetInstance()->EnableProcessing();
// generate a few SSTs
for (int i = 0; i < kNumSst; i++) {
for (int j = 0; j < 100; j++) {
ASSERT_OK(Put(Key(i * 10 + j), "value"));
}
ASSERT_OK(Flush());
}
// Reopen with verification should report corruption
options.verify_sst_unique_id_in_manifest = true;
auto s = TryReopen(options);
ASSERT_TRUE(s.IsCorruption());
// Reopen without verification should be fine
options.verify_sst_unique_id_in_manifest = false;
Reopen(options);
// test compaction generated Sst
for (int i = kNumSst; i < kLevel0Trigger; i++) {
for (int j = 0; j < 100; j++) {
ASSERT_OK(Put(Key(i * 10 + j), "value"));
}
ASSERT_OK(Flush());
}
ASSERT_OK(dbfull()->TEST_WaitForCompact());
ASSERT_EQ("0,1", FilesPerLevel(0));
// Reopen with verification should fail
options.verify_sst_unique_id_in_manifest = true;
s = TryReopen(options);
ASSERT_TRUE(s.IsCorruption());
}
TEST_F(DBTest2, SstUniqueIdVerifyMultiCFs) {
const int kNumSst = 3;
const int kLevel0Trigger = 4;
auto options = CurrentOptions();
options.level0_file_num_compaction_trigger = kLevel0Trigger;
// Allow mismatch for now
options.verify_sst_unique_id_in_manifest = false;
CreateAndReopenWithCF({"one", "two"}, options);
// generate good SSTs
for (int cf_num : {0, 2}) {
for (int i = 0; i < kNumSst; i++) {
for (int j = 0; j < 100; j++) {
ASSERT_OK(Put(cf_num, Key(i * 10 + j), "value"));
}
ASSERT_OK(Flush(cf_num));
}
}
// generate SSTs with bad unique id
SyncPoint::GetInstance()->SetCallBack(
"PropertyBlockBuilder::AddTableProperty:Start", [&](void* props_vs) {
auto props = static_cast<TableProperties*>(props_vs);
// update table property session_id to a different one
props->db_session_id = DBImpl::GenerateDbSessionId(nullptr);
});
SyncPoint::GetInstance()->EnableProcessing();
for (int i = 0; i < kNumSst; i++) {
for (int j = 0; j < 100; j++) {
ASSERT_OK(Put(1, Key(i * 10 + j), "value"));
}
ASSERT_OK(Flush(1));
}
// Reopen with verification should report corruption
options.verify_sst_unique_id_in_manifest = true;
auto s = TryReopenWithColumnFamilies({"default", "one", "two"}, options);
ASSERT_TRUE(s.IsCorruption());
}
TEST_F(DBTest2, BestEffortsRecoveryWithSstUniqueIdVerification) {
const auto tamper_with_uniq_id = [&](void* arg) {
auto props = static_cast<TableProperties*>(arg);
assert(props);
// update table property session_id to a different one
props->db_session_id = DBImpl::GenerateDbSessionId(nullptr);
};
const auto assert_db = [&](size_t expected_count,
const std::string& expected_v) {
std::unique_ptr<Iterator> it(db_->NewIterator(ReadOptions()));
size_t cnt = 0;
for (it->SeekToFirst(); it->Valid(); it->Next(), ++cnt) {
ASSERT_EQ(std::to_string(cnt), it->key());
ASSERT_EQ(expected_v, it->value());
}
EXPECT_OK(it->status());
ASSERT_EQ(expected_count, cnt);
};
const int num_l0_compaction_trigger = 8;
const int num_l0 = num_l0_compaction_trigger - 1;
Options options = CurrentOptions();
options.level0_file_num_compaction_trigger = num_l0_compaction_trigger;
for (int k = 0; k < num_l0; ++k) {
// Allow mismatch for now
options.verify_sst_unique_id_in_manifest = false;
DestroyAndReopen(options);
constexpr size_t num_keys_per_file = 10;
for (int i = 0; i < num_l0; ++i) {
for (size_t j = 0; j < num_keys_per_file; ++j) {
ASSERT_OK(Put(std::to_string(j), "v" + std::to_string(i)));
}
if (i == k) {
SyncPoint::GetInstance()->DisableProcessing();
SyncPoint::GetInstance()->SetCallBack(
"PropertyBlockBuilder::AddTableProperty:Start",
tamper_with_uniq_id);
SyncPoint::GetInstance()->EnableProcessing();
}
ASSERT_OK(Flush());
}
options.verify_sst_unique_id_in_manifest = true;
Status s = TryReopen(options);
ASSERT_TRUE(s.IsCorruption());
options.best_efforts_recovery = true;
Reopen(options);
assert_db(k == 0 ? 0 : num_keys_per_file, "v" + std::to_string(k - 1));
// Reopen with regular recovery
options.best_efforts_recovery = false;
Reopen(options);
assert_db(k == 0 ? 0 : num_keys_per_file, "v" + std::to_string(k - 1));
SyncPoint::GetInstance()->DisableProcessing();
SyncPoint::GetInstance()->ClearAllCallBacks();
for (size_t i = 0; i < num_keys_per_file; ++i) {
ASSERT_OK(Put(std::to_string(i), "v"));
}
ASSERT_OK(Flush());
Reopen(options);
{
for (size_t i = 0; i < num_keys_per_file; ++i) {
ASSERT_EQ("v", Get(std::to_string(i)));
}
}
}
}
TEST_F(DBTest2, GetLatestSeqAndTsForKey) {
Destroy(last_options_);
Options options = CurrentOptions();
options.max_write_buffer_size_to_maintain = 64 << 10;
options.create_if_missing = true;
options.disable_auto_compactions = true;
options.comparator = test::BytewiseComparatorWithU64TsWrapper();
options.statistics = CreateDBStatistics();
Reopen(options);
constexpr uint64_t kTsU64Value = 12;
for (uint64_t key = 0; key < 100; ++key) {
std::string ts;
PutFixed64(&ts, kTsU64Value);
std::string key_str;
PutFixed64(&key_str, key);
std::reverse(key_str.begin(), key_str.end());
ASSERT_OK(db_->Put(WriteOptions(), key_str, ts, "value"));
}
ASSERT_OK(Flush());
constexpr bool cache_only = true;
constexpr SequenceNumber lower_bound_seq = 0;
auto* cfhi = static_cast_with_check<ColumnFamilyHandleImpl>(
dbfull()->DefaultColumnFamily());
assert(cfhi);
assert(cfhi->cfd());
SuperVersion* sv = cfhi->cfd()->GetSuperVersion();
for (uint64_t key = 0; key < 100; ++key) {
std::string key_str;
PutFixed64(&key_str, key);
std::reverse(key_str.begin(), key_str.end());
std::string ts;
SequenceNumber seq = kMaxSequenceNumber;
bool found_record_for_key = false;
bool is_blob_index = false;
const Status s = dbfull()->GetLatestSequenceForKey(
sv, key_str, cache_only, lower_bound_seq, &seq, &ts,
&found_record_for_key, &is_blob_index);
ASSERT_OK(s);
std::string expected_ts;
PutFixed64(&expected_ts, kTsU64Value);
ASSERT_EQ(expected_ts, ts);
ASSERT_TRUE(found_record_for_key);
ASSERT_FALSE(is_blob_index);
}
// Verify that no read to SST files.
ASSERT_EQ(0, options.statistics->getTickerCount(GET_HIT_L0));
}
#if defined(ZSTD_ADVANCED)
TEST_F(DBTest2, ZSTDChecksum) {
// Verify that corruption during decompression is caught.
Options options = CurrentOptions();
options.create_if_missing = true;
options.compression = kZSTD;
options.compression_opts.max_compressed_bytes_per_kb = 1024;
options.compression_opts.checksum = true;
DestroyAndReopen(options);
Random rnd(33);
ASSERT_OK(Put(Key(0), rnd.RandomString(4 << 10)));
SyncPoint::GetInstance()->SetCallBack(
"BlockBasedTableBuilder::WriteBlock:TamperWithCompressedData",
[&](void* arg) {
std::string* output = static_cast<std::string*>(arg);
// https://github.com/facebook/zstd/blob/dev/doc/zstd_compression_format.md#zstandard-frames
// Checksum is the last 4 bytes, corrupting that part in unit test is
// more controllable.
output->data()[output->size() - 1]++;
});
SyncPoint::GetInstance()->EnableProcessing();
ASSERT_OK(Flush());
PinnableSlice val;
Status s = Get(Key(0), &val);
ASSERT_TRUE(s.IsCorruption());
// Corruption caught during flush.
options.paranoid_file_checks = true;
DestroyAndReopen(options);
ASSERT_OK(Put(Key(0), rnd.RandomString(4 << 10)));
s = Flush();
ASSERT_TRUE(s.IsCorruption());
}
#endif
} // namespace ROCKSDB_NAMESPACE
int main(int argc, char** argv) {
ROCKSDB_NAMESPACE::port::InstallStackTraceHandler();
::testing::InitGoogleTest(&argc, argv);
RegisterCustomObjects(argc, argv);
return RUN_ALL_TESTS();
}
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