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rocksdb/monitoring/stats_history_test.cc
Akanksha Mahajan d04df2752a Persist the new MANIFEST after successfully syncing the new WAL during recovery (#9922) 
Summary:
In case of non-TransactionDB and avoid_flush_during_recovery = true, RocksDB won't
flush the data from WAL to L0 for all column families if possible. As a
result, not all column families can increase their log_numbers, and
min_log_number_to_keep won't change.
For transaction DB (.allow_2pc), even with the flush, there may be old WAL files that it must not delete because they can contain data of uncommitted transactions and min_log_number_to_keep won't change.
If we persist a new MANIFEST with
advanced log_numbers for some column families, then during a second
crash after persisting the MANIFEST, RocksDB will see some column
families' log_numbers larger than the corrupted wal, and the "column family inconsistency" error will be hit, causing recovery to fail.

As a solution, RocksDB will persist the new MANIFEST after successfully syncing the new WAL.
If a future recovery starts from the new MANIFEST, then it means the new WAL is successfully synced. Due to the sentinel empty write batch at the beginning, kPointInTimeRecovery of WAL is guaranteed to go after this point.
If future recovery starts from the old MANIFEST, it means the writing the new MANIFEST failed. We won't have the "SST ahead of WAL" error.
Currently, RocksDB DB::Open() may creates and writes to two new MANIFEST files even before recovery succeeds. This PR buffers the edits in a structure and writes to a new MANIFEST after recovery is successful

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9922

Test Plan:
1. Update unit tests to fail without this change
2. make crast_test -j

Branch with unit test and no fix  https://github.com/facebook/rocksdb/pull/9942 to keep track of unit test (without fix)

Reviewed By: riversand963

Differential Revision: D36043701

Pulled By: akankshamahajan15

fbshipit-source-id: 5760970db0a0920fb73d3c054a4155733500acd9
2022-06-01 10:52:26 -07:00

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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 "rocksdb/stats_history.h"
#include <limits>
#include <string>
#include <unordered_map>
#include "db/column_family.h"
#include "db/db_impl/db_impl.h"
#include "db/db_test_util.h"
#include "db/periodic_work_scheduler.h"
#include "monitoring/persistent_stats_history.h"
#include "options/options_helper.h"
#include "port/stack_trace.h"
#include "rocksdb/cache.h"
#include "rocksdb/convenience.h"
#include "rocksdb/rate_limiter.h"
#include "test_util/mock_time_env.h"
#include "test_util/sync_point.h"
#include "test_util/testutil.h"
#include "util/random.h"
namespace ROCKSDB_NAMESPACE {
#ifndef ROCKSDB_LITE
class StatsHistoryTest : public DBTestBase {
public:
StatsHistoryTest() : DBTestBase("stats_history_test", /*env_do_fsync=*/true) {
mock_clock_ = std::make_shared<MockSystemClock>(env_->GetSystemClock());
mock_env_.reset(new CompositeEnvWrapper(env_, mock_clock_));
}
protected:
std::shared_ptr<MockSystemClock> mock_clock_;
std::unique_ptr<Env> mock_env_;
void SetUp() override {
mock_clock_->InstallTimedWaitFixCallback();
SyncPoint::GetInstance()->SetCallBack(
"DBImpl::StartPeriodicWorkScheduler:Init", [&](void* arg) {
auto* periodic_work_scheduler_ptr =
reinterpret_cast<PeriodicWorkScheduler**>(arg);
*periodic_work_scheduler_ptr =
PeriodicWorkTestScheduler::Default(mock_clock_);
});
}
};
TEST_F(StatsHistoryTest, RunStatsDumpPeriodSec) {
constexpr int kPeriodSec = 5;
Options options;
options.create_if_missing = true;
options.stats_dump_period_sec = kPeriodSec;
options.env = mock_env_.get();
int counter = 0;
SyncPoint::GetInstance()->SetCallBack("DBImpl::DumpStats:1",
[&](void* /*arg*/) { counter++; });
Reopen(options);
ASSERT_EQ(5u, dbfull()->GetDBOptions().stats_dump_period_sec);
// Wait for the first stats persist to finish, as the initial delay could be
// different.
dbfull()->TEST_WaitForStatsDumpRun(
[&] { mock_clock_->MockSleepForSeconds(kPeriodSec - 1); });
dbfull()->TEST_WaitForStatsDumpRun(
[&] { mock_clock_->MockSleepForSeconds(kPeriodSec); });
ASSERT_GE(counter, 1);
// Test cancel job through SetOptions
ASSERT_OK(dbfull()->SetDBOptions({{"stats_dump_period_sec", "0"}}));
int old_val = counter;
for (int i = 1; i < 20; ++i) {
mock_clock_->MockSleepForSeconds(kPeriodSec);
}
ASSERT_EQ(counter, old_val);
Close();
}
// Test persistent stats background thread scheduling and cancelling
TEST_F(StatsHistoryTest, StatsPersistScheduling) {
constexpr int kPeriodSec = 5;
Options options;
options.create_if_missing = true;
options.stats_persist_period_sec = kPeriodSec;
options.env = mock_env_.get();
int counter = 0;
SyncPoint::GetInstance()->SetCallBack("DBImpl::PersistStats:Entry",
[&](void* /*arg*/) { counter++; });
Reopen(options);
ASSERT_EQ(5u, dbfull()->GetDBOptions().stats_persist_period_sec);
// Wait for the first stats persist to finish, as the initial delay could be
// different.
dbfull()->TEST_WaitForStatsDumpRun(
[&] { mock_clock_->MockSleepForSeconds(kPeriodSec - 1); });
dbfull()->TEST_WaitForStatsDumpRun(
[&] { mock_clock_->MockSleepForSeconds(kPeriodSec); });
ASSERT_GE(counter, 1);
// Test cancel job through SetOptions
ASSERT_OK(dbfull()->SetDBOptions({{"stats_persist_period_sec", "0"}}));
int old_val = counter;
dbfull()->TEST_WaitForStatsDumpRun(
[&] { mock_clock_->MockSleepForSeconds(kPeriodSec * 2); });
ASSERT_EQ(counter, old_val);
Close();
}
// Test enabling persistent stats for the first time
TEST_F(StatsHistoryTest, PersistentStatsFreshInstall) {
constexpr unsigned int kPeriodSec = 5;
Options options;
options.create_if_missing = true;
options.stats_persist_period_sec = 0;
options.env = mock_env_.get();
int counter = 0;
SyncPoint::GetInstance()->SetCallBack("DBImpl::PersistStats:Entry",
[&](void* /*arg*/) { counter++; });
Reopen(options);
ASSERT_OK(dbfull()->SetDBOptions(
{{"stats_persist_period_sec", std::to_string(kPeriodSec)}}));
ASSERT_EQ(kPeriodSec, dbfull()->GetDBOptions().stats_persist_period_sec);
dbfull()->TEST_WaitForStatsDumpRun(
[&] { mock_clock_->MockSleepForSeconds(kPeriodSec); });
ASSERT_GE(counter, 1);
Close();
}
// TODO(Zhongyi): Move persistent stats related tests to a separate file
TEST_F(StatsHistoryTest, GetStatsHistoryInMemory) {
constexpr int kPeriodSec = 5;
Options options;
options.create_if_missing = true;
options.stats_persist_period_sec = kPeriodSec;
options.statistics = CreateDBStatistics();
options.env = mock_env_.get();
CreateColumnFamilies({"pikachu"}, options);
ASSERT_OK(Put("foo", "bar"));
ReopenWithColumnFamilies({"default", "pikachu"}, options);
// make sure the first stats persist to finish
dbfull()->TEST_WaitForStatsDumpRun(
[&] { mock_clock_->MockSleepForSeconds(kPeriodSec - 1); });
// Wait for stats persist to finish
dbfull()->TEST_WaitForStatsDumpRun(
[&] { mock_clock_->MockSleepForSeconds(kPeriodSec); });
std::unique_ptr<StatsHistoryIterator> stats_iter;
ASSERT_OK(
db_->GetStatsHistory(0, mock_clock_->NowSeconds() + 1, &stats_iter));
ASSERT_TRUE(stats_iter != nullptr);
// disabled stats snapshots
ASSERT_OK(dbfull()->SetDBOptions({{"stats_persist_period_sec", "0"}}));
size_t stats_count = 0;
for (; stats_iter->Valid(); stats_iter->Next()) {
auto stats_map = stats_iter->GetStatsMap();
ASSERT_EQ(stats_iter->GetStatsTime(), mock_clock_->NowSeconds());
stats_count += stats_map.size();
}
ASSERT_GT(stats_count, 0);
// Wait a bit and verify no more stats are found
for (int i = 0; i < 10; ++i) {
dbfull()->TEST_WaitForStatsDumpRun(
[&] { mock_clock_->MockSleepForSeconds(1); });
}
ASSERT_OK(db_->GetStatsHistory(0, mock_clock_->NowSeconds(), &stats_iter));
ASSERT_TRUE(stats_iter != nullptr);
size_t stats_count_new = 0;
for (; stats_iter->Valid(); stats_iter->Next()) {
stats_count_new += stats_iter->GetStatsMap().size();
}
ASSERT_EQ(stats_count_new, stats_count);
Close();
}
TEST_F(StatsHistoryTest, InMemoryStatsHistoryPurging) {
constexpr int kPeriodSec = 1;
Options options;
options.create_if_missing = true;
options.statistics = CreateDBStatistics();
options.stats_persist_period_sec = kPeriodSec;
options.env = mock_env_.get();
CreateColumnFamilies({"pikachu"}, options);
ASSERT_OK(Put("foo", "bar"));
ReopenWithColumnFamilies({"default", "pikachu"}, options);
// some random operation to populate statistics
ASSERT_OK(Delete("foo"));
ASSERT_OK(Put("sol", "sol"));
ASSERT_OK(Put("epic", "epic"));
ASSERT_OK(Put("ltd", "ltd"));
ASSERT_EQ("sol", Get("sol"));
ASSERT_EQ("epic", Get("epic"));
ASSERT_EQ("ltd", Get("ltd"));
Iterator* iterator = db_->NewIterator(ReadOptions());
for (iterator->SeekToFirst(); iterator->Valid(); iterator->Next()) {
ASSERT_TRUE(iterator->key() == iterator->value());
}
delete iterator;
ASSERT_OK(Flush());
ASSERT_OK(Delete("sol"));
ASSERT_OK(db_->CompactRange(CompactRangeOptions(), nullptr, nullptr));
// second round of ops
ASSERT_OK(Put("saigon", "saigon"));
ASSERT_OK(Put("noodle talk", "noodle talk"));
ASSERT_OK(Put("ping bistro", "ping bistro"));
iterator = db_->NewIterator(ReadOptions());
for (iterator->SeekToFirst(); iterator->Valid(); iterator->Next()) {
ASSERT_TRUE(iterator->key() == iterator->value());
}
delete iterator;
ASSERT_OK(Flush());
ASSERT_OK(db_->CompactRange(CompactRangeOptions(), nullptr, nullptr));
const int kIterations = 10;
for (int i = 0; i < kIterations; ++i) {
dbfull()->TEST_WaitForStatsDumpRun(
[&] { mock_clock_->MockSleepForSeconds(kPeriodSec); });
}
std::unique_ptr<StatsHistoryIterator> stats_iter;
ASSERT_OK(
db_->GetStatsHistory(0, mock_clock_->NowSeconds() + 1, &stats_iter));
ASSERT_TRUE(stats_iter != nullptr);
size_t stats_count = 0;
int slice_count = 0;
for (; stats_iter->Valid(); stats_iter->Next()) {
slice_count++;
auto stats_map = stats_iter->GetStatsMap();
stats_count += stats_map.size();
}
size_t stats_history_size = dbfull()->TEST_EstimateInMemoryStatsHistorySize();
ASSERT_GE(slice_count, kIterations - 1);
ASSERT_GE(stats_history_size, 15000);
// capping memory cost at 15000 bytes since one slice is around 10000~15000
ASSERT_OK(dbfull()->SetDBOptions({{"stats_history_buffer_size", "15000"}}));
ASSERT_EQ(15000, dbfull()->GetDBOptions().stats_history_buffer_size);
// Wait for stats persist to finish
for (int i = 0; i < kIterations; ++i) {
dbfull()->TEST_WaitForStatsDumpRun(
[&] { mock_clock_->MockSleepForSeconds(kPeriodSec); });
}
ASSERT_OK(
db_->GetStatsHistory(0, mock_clock_->NowSeconds() + 1, &stats_iter));
ASSERT_TRUE(stats_iter != nullptr);
size_t stats_count_reopen = 0;
slice_count = 0;
for (; stats_iter->Valid(); stats_iter->Next()) {
slice_count++;
auto stats_map = stats_iter->GetStatsMap();
stats_count_reopen += stats_map.size();
}
size_t stats_history_size_reopen =
dbfull()->TEST_EstimateInMemoryStatsHistorySize();
// only one slice can fit under the new stats_history_buffer_size
ASSERT_LT(slice_count, 2);
ASSERT_TRUE(stats_history_size_reopen < 15000 &&
stats_history_size_reopen > 0);
ASSERT_TRUE(stats_count_reopen < stats_count && stats_count_reopen > 0);
Close();
// TODO: may also want to verify stats timestamp to make sure we are purging
// the correct stats snapshot
}
int countkeys(Iterator* iter) {
int count = 0;
for (iter->SeekToFirst(); iter->Valid(); iter->Next()) {
count++;
}
return count;
}
TEST_F(StatsHistoryTest, GetStatsHistoryFromDisk) {
constexpr int kPeriodSec = 5;
Options options;
options.create_if_missing = true;
options.stats_persist_period_sec = kPeriodSec;
options.statistics = CreateDBStatistics();
options.persist_stats_to_disk = true;
options.env = mock_env_.get();
CreateColumnFamilies({"pikachu"}, options);
ASSERT_OK(Put("foo", "bar"));
ReopenWithColumnFamilies({"default", "pikachu"}, options);
ASSERT_EQ(Get("foo"), "bar");
// Wait for the first stats persist to finish, as the initial delay could be
// different.
dbfull()->TEST_WaitForStatsDumpRun(
[&] { mock_clock_->MockSleepForSeconds(kPeriodSec - 1); });
// Wait for stats persist to finish
dbfull()->TEST_WaitForStatsDumpRun(
[&] { mock_clock_->MockSleepForSeconds(kPeriodSec); });
auto iter =
db_->NewIterator(ReadOptions(), dbfull()->PersistentStatsColumnFamily());
int key_count1 = countkeys(iter);
delete iter;
dbfull()->TEST_WaitForStatsDumpRun(
[&] { mock_clock_->MockSleepForSeconds(kPeriodSec); });
iter =
db_->NewIterator(ReadOptions(), dbfull()->PersistentStatsColumnFamily());
int key_count2 = countkeys(iter);
delete iter;
dbfull()->TEST_WaitForStatsDumpRun(
[&] { mock_clock_->MockSleepForSeconds(kPeriodSec); });
iter =
db_->NewIterator(ReadOptions(), dbfull()->PersistentStatsColumnFamily());
int key_count3 = countkeys(iter);
delete iter;
ASSERT_GE(key_count2, key_count1);
ASSERT_GE(key_count3, key_count2);
ASSERT_EQ(key_count3 - key_count2, key_count2 - key_count1);
std::unique_ptr<StatsHistoryIterator> stats_iter;
ASSERT_OK(
db_->GetStatsHistory(0, mock_clock_->NowSeconds() + 1, &stats_iter));
ASSERT_TRUE(stats_iter != nullptr);
size_t stats_count = 0;
int slice_count = 0;
int non_zero_count = 0;
for (int i = 2; stats_iter->Valid(); stats_iter->Next(), i++) {
slice_count++;
auto stats_map = stats_iter->GetStatsMap();
ASSERT_EQ(stats_iter->GetStatsTime(), kPeriodSec * i - 1);
for (auto& stat : stats_map) {
if (stat.second != 0) {
non_zero_count++;
}
}
stats_count += stats_map.size();
}
ASSERT_EQ(slice_count, 3);
// 2 extra keys for format version
ASSERT_EQ(stats_count, key_count3 - 2);
// verify reopen will not cause data loss
ReopenWithColumnFamilies({"default", "pikachu"}, options);
ASSERT_OK(
db_->GetStatsHistory(0, mock_clock_->NowSeconds() + 1, &stats_iter));
ASSERT_TRUE(stats_iter != nullptr);
size_t stats_count_reopen = 0;
int slice_count_reopen = 0;
int non_zero_count_recover = 0;
for (; stats_iter->Valid(); stats_iter->Next()) {
slice_count_reopen++;
auto stats_map = stats_iter->GetStatsMap();
for (auto& stat : stats_map) {
if (stat.second != 0) {
non_zero_count_recover++;
}
}
stats_count_reopen += stats_map.size();
}
ASSERT_EQ(non_zero_count, non_zero_count_recover);
ASSERT_EQ(slice_count, slice_count_reopen);
ASSERT_EQ(stats_count, stats_count_reopen);
Close();
}
// Test persisted stats matches the value found in options.statistics and
// the stats value retains after DB reopen
TEST_F(StatsHistoryTest, PersitentStatsVerifyValue) {
constexpr int kPeriodSec = 5;
Options options;
options.create_if_missing = true;
options.stats_persist_period_sec = kPeriodSec;
options.statistics = CreateDBStatistics();
options.persist_stats_to_disk = true;
std::map<std::string, uint64_t> stats_map_before;
ASSERT_TRUE(options.statistics->getTickerMap(&stats_map_before));
options.env = mock_env_.get();
CreateColumnFamilies({"pikachu"}, options);
ASSERT_OK(Put("foo", "bar"));
ReopenWithColumnFamilies({"default", "pikachu"}, options);
ASSERT_EQ(Get("foo"), "bar");
// Wait for the first stats persist to finish, as the initial delay could be
// different.
dbfull()->TEST_WaitForStatsDumpRun(
[&] { mock_clock_->MockSleepForSeconds(kPeriodSec - 1); });
// Wait for stats persist to finish
dbfull()->TEST_WaitForStatsDumpRun(
[&] { mock_clock_->MockSleepForSeconds(kPeriodSec); });
auto iter =
db_->NewIterator(ReadOptions(), dbfull()->PersistentStatsColumnFamily());
countkeys(iter);
delete iter;
dbfull()->TEST_WaitForStatsDumpRun(
[&] { mock_clock_->MockSleepForSeconds(kPeriodSec); });
iter =
db_->NewIterator(ReadOptions(), dbfull()->PersistentStatsColumnFamily());
countkeys(iter);
delete iter;
dbfull()->TEST_WaitForStatsDumpRun(
[&] { mock_clock_->MockSleepForSeconds(kPeriodSec); });
iter =
db_->NewIterator(ReadOptions(), dbfull()->PersistentStatsColumnFamily());
countkeys(iter);
delete iter;
dbfull()->TEST_WaitForStatsDumpRun(
[&] { mock_clock_->MockSleepForSeconds(kPeriodSec); });
std::map<std::string, uint64_t> stats_map_after;
ASSERT_TRUE(options.statistics->getTickerMap(&stats_map_after));
std::unique_ptr<StatsHistoryIterator> stats_iter;
ASSERT_OK(
db_->GetStatsHistory(0, mock_clock_->NowSeconds() + 1, &stats_iter));
ASSERT_TRUE(stats_iter != nullptr);
std::string sample = "rocksdb.num.iterator.deleted";
uint64_t recovered_value = 0;
for (int i = 2; stats_iter->Valid(); stats_iter->Next(), ++i) {
auto stats_map = stats_iter->GetStatsMap();
ASSERT_EQ(stats_iter->GetStatsTime(), kPeriodSec * i - 1);
for (const auto& stat : stats_map) {
if (sample.compare(stat.first) == 0) {
recovered_value += stat.second;
}
}
}
ASSERT_EQ(recovered_value, stats_map_after[sample]);
// test stats value retains after recovery
ReopenWithColumnFamilies({"default", "pikachu"}, options);
ASSERT_OK(
db_->GetStatsHistory(0, mock_clock_->NowSeconds() + 1, &stats_iter));
ASSERT_TRUE(stats_iter != nullptr);
uint64_t new_recovered_value = 0;
for (int i = 2; stats_iter->Valid(); stats_iter->Next(), i++) {
auto stats_map = stats_iter->GetStatsMap();
ASSERT_EQ(stats_iter->GetStatsTime(), kPeriodSec * i - 1);
for (const auto& stat : stats_map) {
if (sample.compare(stat.first) == 0) {
new_recovered_value += stat.second;
}
}
}
ASSERT_EQ(recovered_value, new_recovered_value);
// TODO(Zhongyi): also add test to read raw values from disk and verify
// correctness
Close();
}
// TODO(Zhongyi): add test for different format versions
TEST_F(StatsHistoryTest, PersistentStatsCreateColumnFamilies) {
constexpr int kPeriodSec = 5;
Options options;
options.create_if_missing = true;
options.stats_persist_period_sec = kPeriodSec;
options.statistics = CreateDBStatistics();
options.persist_stats_to_disk = true;
options.env = mock_env_.get();
ASSERT_OK(TryReopen(options));
CreateColumnFamilies({"one", "two", "three"}, options);
ASSERT_OK(Put(1, "foo", "bar"));
ReopenWithColumnFamilies({"default", "one", "two", "three"}, options);
ASSERT_EQ(Get(2, "foo"), "bar");
CreateColumnFamilies({"four"}, options);
ReopenWithColumnFamilies({"default", "one", "two", "three", "four"}, options);
ASSERT_EQ(Get(2, "foo"), "bar");
// make sure the first stats persist to finish
dbfull()->TEST_WaitForStatsDumpRun(
[&] { mock_clock_->MockSleepForSeconds(kPeriodSec - 1); });
dbfull()->TEST_WaitForStatsDumpRun(
[&] { mock_clock_->MockSleepForSeconds(kPeriodSec); });
auto iter =
db_->NewIterator(ReadOptions(), dbfull()->PersistentStatsColumnFamily());
int key_count = countkeys(iter);
delete iter;
ASSERT_GE(key_count, 0);
uint64_t num_write_wal = 0;
std::string sample = "rocksdb.write.wal";
std::unique_ptr<StatsHistoryIterator> stats_iter;
ASSERT_OK(db_->GetStatsHistory(0, mock_clock_->NowSeconds(), &stats_iter));
ASSERT_TRUE(stats_iter != nullptr);
for (; stats_iter->Valid(); stats_iter->Next()) {
auto stats_map = stats_iter->GetStatsMap();
for (const auto& stat : stats_map) {
if (sample.compare(stat.first) == 0) {
num_write_wal += stat.second;
}
}
}
stats_iter.reset();
ASSERT_EQ(num_write_wal, 1);
options.persist_stats_to_disk = false;
ReopenWithColumnFamilies({"default", "one", "two", "three", "four"}, options);
int cf_count = 0;
for (auto cfd : *dbfull()->versions_->GetColumnFamilySet()) {
(void)cfd;
cf_count++;
}
// persistent stats cf will be implicitly opened even if
// persist_stats_to_disk is false
ASSERT_EQ(cf_count, 6);
ASSERT_EQ(Get(2, "foo"), "bar");
// attempt to create column family using same name, should fail
ColumnFamilyOptions cf_opts(options);
ColumnFamilyHandle* handle;
ASSERT_NOK(db_->CreateColumnFamily(cf_opts, kPersistentStatsColumnFamilyName,
&handle));
options.persist_stats_to_disk = true;
ReopenWithColumnFamilies({"default", "one", "two", "three", "four"}, options);
ASSERT_NOK(db_->CreateColumnFamily(cf_opts, kPersistentStatsColumnFamilyName,
&handle));
// verify stats is not affected by prior failed CF creation
ASSERT_OK(db_->GetStatsHistory(0, mock_clock_->NowSeconds(), &stats_iter));
ASSERT_TRUE(stats_iter != nullptr);
num_write_wal = 0;
for (; stats_iter->Valid(); stats_iter->Next()) {
auto stats_map = stats_iter->GetStatsMap();
for (const auto& stat : stats_map) {
if (sample.compare(stat.first) == 0) {
num_write_wal += stat.second;
}
}
}
ASSERT_EQ(num_write_wal, 1);
Close();
Destroy(options);
}
TEST_F(StatsHistoryTest, PersistentStatsReadOnly) {
ASSERT_OK(Put("bar", "v2"));
Close();
auto options = CurrentOptions();
options.stats_persist_period_sec = 5;
options.persist_stats_to_disk = true;
assert(options.env == env_);
ASSERT_OK(ReadOnlyReopen(options));
ASSERT_EQ("v2", Get("bar"));
Close();
// Reopen and flush memtable.
ASSERT_OK(TryReopen(options));
ASSERT_OK(Flush());
Close();
// Now check keys in read only mode.
ASSERT_OK(ReadOnlyReopen(options));
}
TEST_F(StatsHistoryTest, ForceManualFlushStatsCF) {
constexpr int kPeriodSec = 5;
Options options;
options.create_if_missing = true;
options.write_buffer_size = 1024 * 1024 * 10; // 10 Mb
options.stats_persist_period_sec = kPeriodSec;
options.statistics = CreateDBStatistics();
options.persist_stats_to_disk = true;
options.env = mock_env_.get();
CreateColumnFamilies({"pikachu"}, options);
ReopenWithColumnFamilies({"default", "pikachu"}, options);
// Wait for the first stats persist to finish, as the initial delay could be
// different.
dbfull()->TEST_WaitForStatsDumpRun(
[&] { mock_clock_->MockSleepForSeconds(kPeriodSec - 1); });
ColumnFamilyData* cfd_default =
static_cast<ColumnFamilyHandleImpl*>(dbfull()->DefaultColumnFamily())
->cfd();
ColumnFamilyData* cfd_stats = static_cast<ColumnFamilyHandleImpl*>(
dbfull()->PersistentStatsColumnFamily())
->cfd();
ColumnFamilyData* cfd_test =
static_cast<ColumnFamilyHandleImpl*>(handles_[1])->cfd();
ASSERT_OK(Put("foo", "v0"));
ASSERT_OK(Put("bar", "v0"));
ASSERT_EQ("v0", Get("bar"));
ASSERT_EQ("v0", Get("foo"));
ASSERT_OK(Put(1, "Eevee", "v0"));
ASSERT_EQ("v0", Get(1, "Eevee"));
dbfull()->TEST_WaitForStatsDumpRun(
[&] { mock_clock_->MockSleepForSeconds(kPeriodSec); });
// writing to all three cf, flush default cf
// LogNumbers: default: 16, stats: 10, pikachu: 5
// Since in recovery process, cfd_stats column is created after WAL is
// created, synced and MANIFEST is persisted, its log number which depends on
// logfile_number_ will be different. Since "pikachu" is never flushed, thus
// its log_number should be the smallest of the three.
ASSERT_OK(Flush());
ASSERT_LT(cfd_test->GetLogNumber(), cfd_stats->GetLogNumber());
ASSERT_LT(cfd_test->GetLogNumber(), cfd_default->GetLogNumber());
ASSERT_OK(Put("foo1", "v1"));
ASSERT_OK(Put("bar1", "v1"));
ASSERT_EQ("v1", Get("bar1"));
ASSERT_EQ("v1", Get("foo1"));
ASSERT_OK(Put(1, "Vaporeon", "v1"));
ASSERT_EQ("v1", Get(1, "Vaporeon"));
// writing to default and test cf, flush test cf
// LogNumbers: default: 14, stats: 16, pikachu: 16
ASSERT_OK(Flush(1));
ASSERT_EQ(cfd_stats->GetLogNumber(), cfd_test->GetLogNumber());
ASSERT_GT(cfd_stats->GetLogNumber(), cfd_default->GetLogNumber());
ASSERT_OK(Put("foo2", "v2"));
ASSERT_OK(Put("bar2", "v2"));
ASSERT_EQ("v2", Get("bar2"));
ASSERT_EQ("v2", Get("foo2"));
dbfull()->TEST_WaitForStatsDumpRun(
[&] { mock_clock_->MockSleepForSeconds(kPeriodSec); });
// writing to default and stats cf, flushing default cf
// LogNumbers: default: 19, stats: 19, pikachu: 19
ASSERT_OK(Flush());
ASSERT_EQ(cfd_stats->GetLogNumber(), cfd_test->GetLogNumber());
ASSERT_EQ(cfd_stats->GetLogNumber(), cfd_default->GetLogNumber());
ASSERT_OK(Put("foo3", "v3"));
ASSERT_OK(Put("bar3", "v3"));
ASSERT_EQ("v3", Get("bar3"));
ASSERT_EQ("v3", Get("foo3"));
ASSERT_OK(Put(1, "Jolteon", "v3"));
ASSERT_EQ("v3", Get(1, "Jolteon"));
dbfull()->TEST_WaitForStatsDumpRun(
[&] { mock_clock_->MockSleepForSeconds(kPeriodSec); });
// writing to all three cf, flushing test cf
// LogNumbers: default: 19, stats: 19, pikachu: 22
ASSERT_OK(Flush(1));
ASSERT_LT(cfd_stats->GetLogNumber(), cfd_test->GetLogNumber());
ASSERT_EQ(cfd_stats->GetLogNumber(), cfd_default->GetLogNumber());
Close();
}
#endif // !ROCKSDB_LITE
} // namespace ROCKSDB_NAMESPACE
int main(int argc, char** argv) {
ROCKSDB_NAMESPACE::port::InstallStackTraceHandler();
::testing::InitGoogleTest(&argc, argv);
return RUN_ALL_TESTS();
}
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