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rocksdb/db/flush_job_test.cc

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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).
#include "db/flush_job.h"
#include <algorithm>
#include <array>
#include <map>
#include <string>
#include "db/blob/blob_index.h"
#include "db/column_family.h"
#include "db/db_impl/db_impl.h"
#include "db/version_set.h"
#include "file/writable_file_writer.h"
#include "rocksdb/cache.h"
#include "rocksdb/file_system.h"
#include "rocksdb/write_buffer_manager.h"
#include "table/mock_table.h"
#include "test_util/testharness.h"
#include "test_util/testutil.h"
#include "util/random.h"
#include "util/string_util.h"
namespace ROCKSDB_NAMESPACE {
namespace {
std::string ValueWithWriteTime(std::string val, uint64_t write_time = 0) {
std::string result = val;
PutFixed64(&result, write_time);
return result;
}
std::string ValueWithPreferredSeqno(std::string val,
SequenceNumber preferred_seqno = 0) {
std::string result = val;
PutFixed64(&result, preferred_seqno);
return result;
}
} // namespace
// TODO(icanadi) Mock out everything else:
// 1. VersionSet
// 2. Memtable
class FlushJobTestBase : public testing::Test {
protected:
FlushJobTestBase(std::string dbname, const Comparator* ucmp)
: env_(Env::Default()),
fs_(env_->GetFileSystem()),
dbname_(std::move(dbname)),
ucmp_(ucmp),
options_(),
db_options_(options_),
column_family_names_({kDefaultColumnFamilyName, "foo", "bar"}),
table_cache_(NewLRUCache(50000, 16)),
write_buffer_manager_(db_options_.db_write_buffer_size),
shutting_down_(false),
mock_table_factory_(new mock::MockTableFactory()) {}
virtual ~FlushJobTestBase() {
if (getenv("KEEP_DB")) {
fprintf(stdout, "db is still in %s\n", dbname_.c_str());
} else {
// destroy versions_ to release all file handles
versions_.reset();
EXPECT_OK(DestroyDir(env_, dbname_));
}
}
void NewDB() {
ASSERT_OK(
SetIdentityFile(WriteOptions(), env_, dbname_, Temperature::kUnknown));
VersionEdit new_db;
new_db.SetLogNumber(0);
new_db.SetNextFile(2);
new_db.SetLastSequence(0);
autovector<VersionEdit> new_cfs;
SequenceNumber last_seq = 1;
uint32_t cf_id = 1;
for (size_t i = 1; i != column_family_names_.size(); ++i) {
VersionEdit new_cf;
new_cf.AddColumnFamily(column_family_names_[i]);
new_cf.SetColumnFamily(cf_id++);
new_cf.SetComparatorName(ucmp_->Name());
new_cf.SetPersistUserDefinedTimestamps(persist_udt_);
new_cf.SetLogNumber(0);
new_cf.SetNextFile(2);
new_cf.SetLastSequence(last_seq++);
new_cfs.emplace_back(new_cf);
}
const std::string manifest = DescriptorFileName(dbname_, 1);
const auto& fs = env_->GetFileSystem();
std::unique_ptr<WritableFileWriter> file_writer;
Status s = WritableFileWriter::Create(
fs, manifest, fs->OptimizeForManifestWrite(env_options_), &file_writer,
nullptr);
ASSERT_OK(s);
{
log::Writer log(std::move(file_writer), 0, false);
std::string record;
new_db.EncodeTo(&record);
s = log.AddRecord(WriteOptions(), record);
ASSERT_OK(s);
for (const auto& e : new_cfs) {
record.clear();
e.EncodeTo(&record);
s = log.AddRecord(WriteOptions(), record);
ASSERT_OK(s);
}
}
ASSERT_OK(s);
// Make "CURRENT" file that points to the new manifest file.
s = SetCurrentFile(WriteOptions(), fs_.get(), dbname_, 1,
Temperature::kUnknown, nullptr);
ASSERT_OK(s);
}
void SetUp() override {
EXPECT_OK(env_->CreateDirIfMissing(dbname_));
// TODO(icanadi) Remove this once we mock out VersionSet
NewDB();
db_options_.env = env_;
db_options_.fs = fs_;
db_options_.db_paths.emplace_back(dbname_,
std::numeric_limits<uint64_t>::max());
db_options_.statistics = CreateDBStatistics();
cf_options_.comparator = ucmp_;
cf_options_.persist_user_defined_timestamps = persist_udt_;
cf_options_.paranoid_file_checks = paranoid_file_checks_;
std::vector<ColumnFamilyDescriptor> column_families;
cf_options_.table_factory = mock_table_factory_;
for (const auto& cf_name : column_family_names_) {
column_families.emplace_back(cf_name, cf_options_);
}
versions_.reset(new VersionSet(
dbname_, &db_options_, env_options_, table_cache_.get(),
&write_buffer_manager_, &write_controller_,
/*block_cache_tracer=*/nullptr, /*io_tracer=*/nullptr,
/*db_id=*/"", /*db_session_id=*/"", /*daily_offpeak_time_utc=*/"",
/*error_handler=*/nullptr, /*read_only=*/false));
EXPECT_OK(versions_->Recover(column_families, false));
}
Env* env_;
std::shared_ptr<FileSystem> fs_;
std::string dbname_;
const Comparator* const ucmp_;
EnvOptions env_options_;
Options options_;
ImmutableDBOptions db_options_;
const std::vector<std::string> column_family_names_;
std::shared_ptr<Cache> table_cache_;
WriteController write_controller_;
WriteBufferManager write_buffer_manager_;
ColumnFamilyOptions cf_options_;
std::unique_ptr<VersionSet> versions_;
InstrumentedMutex mutex_;
std::atomic<bool> shutting_down_;
std::shared_ptr<mock::MockTableFactory> mock_table_factory_;
bool persist_udt_ = true;
bool paranoid_file_checks_ = false;
std::shared_ptr<SeqnoToTimeMapping> empty_seqno_to_time_mapping_;
};
class FlushJobTest : public FlushJobTestBase {
public:
FlushJobTest()
: FlushJobTestBase(test::PerThreadDBPath("flush_job_test"),
BytewiseComparator()) {}
};
TEST_F(FlushJobTest, Empty) {
JobContext job_context(0);
auto cfd = versions_->GetColumnFamilySet()->GetDefault();
EventLogger event_logger(db_options_.info_log.get());
SnapshotChecker* snapshot_checker = nullptr; // not relavant
FlushJob flush_job(
dbname_, versions_->GetColumnFamilySet()->GetDefault(), db_options_,
*cfd->GetLatestMutableCFOptions(),
std::numeric_limits<uint64_t>::max() /* memtable_id */, env_options_,
versions_.get(), &mutex_, &shutting_down_, {}, kMaxSequenceNumber,
snapshot_checker, &job_context, FlushReason::kTest, nullptr, nullptr,
nullptr, kNoCompression, nullptr, &event_logger, false,
true /* sync_output_directory */, true /* write_manifest */,
Env::Priority::USER, nullptr /*IOTracer*/, empty_seqno_to_time_mapping_);
{
InstrumentedMutexLock l(&mutex_);
flush_job.PickMemTable();
ASSERT_OK(flush_job.Run());
}
job_context.Clean();
}
TEST_F(FlushJobTest, NonEmpty) {
JobContext job_context(0);
auto cfd = versions_->GetColumnFamilySet()->GetDefault();
auto new_mem = cfd->ConstructNewMemtable(*cfd->GetLatestMutableCFOptions(),
kMaxSequenceNumber);
new_mem->Ref();
auto inserted_keys = mock::MakeMockFile();
// Test data:
// seqno [ 1, 2 ... 8998, 8999, 9000, 9001, 9002 ... 9999 ]
// key [ 1001, 1002 ... 9998, 9999, 0, 1, 2 ... 999 ]
// range-delete "9995" -> "9999" at seqno 10000
// blob references with seqnos 10001..10006
for (int i = 1; i < 10000; ++i) {
std::string key(std::to_string((i + 1000) % 10000));
std::string value("value" + key);
ASSERT_OK(new_mem->Add(SequenceNumber(i), kTypeValue, key, value,
nullptr /* kv_prot_info */));
if ((i + 1000) % 10000 < 9995) {
InternalKey internal_key(key, SequenceNumber(i), kTypeValue);
inserted_keys.push_back({internal_key.Encode().ToString(), value});
}
}
{
ASSERT_OK(new_mem->Add(SequenceNumber(10000), kTypeRangeDeletion, "9995",
"9999a", nullptr /* kv_prot_info */));
InternalKey internal_key("9995", SequenceNumber(10000), kTypeRangeDeletion);
inserted_keys.push_back({internal_key.Encode().ToString(), "9999a"});
}
// Note: the first two blob references will not be considered when resolving
// the oldest blob file referenced (the first one is inlined TTL, while the
// second one is TTL and thus points to a TTL blob file).
constexpr std::array<uint64_t, 6> blob_file_numbers{
{kInvalidBlobFileNumber, 5, 103, 17, 102, 101}};
for (size_t i = 0; i < blob_file_numbers.size(); ++i) {
std::string key(std::to_string(i + 10001));
std::string blob_index;
if (i == 0) {
BlobIndex::EncodeInlinedTTL(&blob_index, /* expiration */ 1234567890ULL,
"foo");
} else if (i == 1) {
BlobIndex::EncodeBlobTTL(&blob_index, /* expiration */ 1234567890ULL,
blob_file_numbers[i], /* offset */ i << 10,
/* size */ i << 20, kNoCompression);
} else {
BlobIndex::EncodeBlob(&blob_index, blob_file_numbers[i],
/* offset */ i << 10, /* size */ i << 20,
kNoCompression);
}
const SequenceNumber seq(i + 10001);
ASSERT_OK(new_mem->Add(seq, kTypeBlobIndex, key, blob_index,
nullptr /* kv_prot_info */));
InternalKey internal_key(key, seq, kTypeBlobIndex);
inserted_keys.push_back({internal_key.Encode().ToString(), blob_index});
}
mock::SortKVVector(&inserted_keys);
autovector<MemTable*> to_delete;
new_mem->ConstructFragmentedRangeTombstones();
cfd->imm()->Add(new_mem, &to_delete);
for (auto& m : to_delete) {
delete m;
}
EventLogger event_logger(db_options_.info_log.get());
SnapshotChecker* snapshot_checker = nullptr; // not relavant
FlushJob flush_job(
dbname_, versions_->GetColumnFamilySet()->GetDefault(), db_options_,
*cfd->GetLatestMutableCFOptions(),
std::numeric_limits<uint64_t>::max() /* memtable_id */, env_options_,
versions_.get(), &mutex_, &shutting_down_, {}, kMaxSequenceNumber,
snapshot_checker, &job_context, FlushReason::kTest, nullptr, nullptr,
nullptr, kNoCompression, db_options_.statistics.get(), &event_logger,
true, true /* sync_output_directory */, true /* write_manifest */,
Env::Priority::USER, nullptr /*IOTracer*/, empty_seqno_to_time_mapping_);
HistogramData hist;
FileMetaData file_meta;
mutex_.Lock();
flush_job.PickMemTable();
ASSERT_OK(flush_job.Run(nullptr, &file_meta));
mutex_.Unlock();
db_options_.statistics->histogramData(FLUSH_TIME, &hist);
ASSERT_GT(hist.average, 0.0);
ASSERT_EQ(std::to_string(0), file_meta.smallest.user_key().ToString());
ASSERT_EQ("9999a", file_meta.largest.user_key().ToString());
ASSERT_EQ(1, file_meta.fd.smallest_seqno);
ASSERT_EQ(10006, file_meta.fd.largest_seqno);
ASSERT_EQ(17, file_meta.oldest_blob_file_number);
mock_table_factory_->AssertSingleFile(inserted_keys);
job_context.Clean();
}
TEST_F(FlushJobTest, FlushMemTablesSingleColumnFamily) {
const size_t num_mems = 2;
const size_t num_mems_to_flush = 1;
const size_t num_keys_per_table = 100;
JobContext job_context(0);
ColumnFamilyData* cfd = versions_->GetColumnFamilySet()->GetDefault();
std::vector<uint64_t> memtable_ids;
std::vector<MemTable*> new_mems;
for (size_t i = 0; i != num_mems; ++i) {
MemTable* mem = cfd->ConstructNewMemtable(*cfd->GetLatestMutableCFOptions(),
kMaxSequenceNumber);
mem->SetID(i);
mem->Ref();
new_mems.emplace_back(mem);
memtable_ids.push_back(mem->GetID());
for (size_t j = 0; j < num_keys_per_table; ++j) {
std::string key(std::to_string(j + i * num_keys_per_table));
std::string value("value" + key);
ASSERT_OK(mem->Add(SequenceNumber(j + i * num_keys_per_table), kTypeValue,
key, value, nullptr /* kv_prot_info */));
}
}
autovector<MemTable*> to_delete;
for (auto mem : new_mems) {
mem->ConstructFragmentedRangeTombstones();
cfd->imm()->Add(mem, &to_delete);
}
EventLogger event_logger(db_options_.info_log.get());
SnapshotChecker* snapshot_checker = nullptr; // not relavant
assert(memtable_ids.size() == num_mems);
uint64_t smallest_memtable_id = memtable_ids.front();
uint64_t flush_memtable_id = smallest_memtable_id + num_mems_to_flush - 1;
FlushJob flush_job(
dbname_, versions_->GetColumnFamilySet()->GetDefault(), db_options_,
*cfd->GetLatestMutableCFOptions(), flush_memtable_id, env_options_,
versions_.get(), &mutex_, &shutting_down_, {}, kMaxSequenceNumber,
snapshot_checker, &job_context, FlushReason::kTest, nullptr, nullptr,
nullptr, kNoCompression, db_options_.statistics.get(), &event_logger,
true, true /* sync_output_directory */, true /* write_manifest */,
Env::Priority::USER, nullptr /*IOTracer*/, empty_seqno_to_time_mapping_);
HistogramData hist;
FileMetaData file_meta;
mutex_.Lock();
flush_job.PickMemTable();
ASSERT_OK(flush_job.Run(nullptr /* prep_tracker */, &file_meta));
mutex_.Unlock();
db_options_.statistics->histogramData(FLUSH_TIME, &hist);
ASSERT_GT(hist.average, 0.0);
ASSERT_EQ(std::to_string(0), file_meta.smallest.user_key().ToString());
ASSERT_EQ("99", file_meta.largest.user_key().ToString());
ASSERT_EQ(0, file_meta.fd.smallest_seqno);
ASSERT_EQ(SequenceNumber(num_mems_to_flush * num_keys_per_table - 1),
file_meta.fd.largest_seqno);
ASSERT_EQ(kInvalidBlobFileNumber, file_meta.oldest_blob_file_number);
for (auto m : to_delete) {
delete m;
}
to_delete.clear();
job_context.Clean();
}
TEST_F(FlushJobTest, FlushMemtablesMultipleColumnFamilies) {
autovector<ColumnFamilyData*> all_cfds;
for (auto cfd : *versions_->GetColumnFamilySet()) {
all_cfds.push_back(cfd);
}
const std::vector<size_t> num_memtables = {2, 1, 3};
assert(num_memtables.size() == column_family_names_.size());
const size_t num_keys_per_memtable = 1000;
JobContext job_context(0);
std::vector<uint64_t> memtable_ids;
std::vector<SequenceNumber> smallest_seqs;
std::vector<SequenceNumber> largest_seqs;
autovector<MemTable*> to_delete;
SequenceNumber curr_seqno = 0;
size_t k = 0;
for (auto cfd : all_cfds) {
smallest_seqs.push_back(curr_seqno);
for (size_t i = 0; i != num_memtables[k]; ++i) {
MemTable* mem = cfd->ConstructNewMemtable(
*cfd->GetLatestMutableCFOptions(), kMaxSequenceNumber);
mem->SetID(i);
mem->Ref();
for (size_t j = 0; j != num_keys_per_memtable; ++j) {
std::string key(std::to_string(j + i * num_keys_per_memtable));
std::string value("value" + key);
ASSERT_OK(mem->Add(curr_seqno++, kTypeValue, key, value,
nullptr /* kv_prot_info */));
}
mem->ConstructFragmentedRangeTombstones();
cfd->imm()->Add(mem, &to_delete);
}
largest_seqs.push_back(curr_seqno - 1);
memtable_ids.push_back(num_memtables[k++] - 1);
}
EventLogger event_logger(db_options_.info_log.get());
SnapshotChecker* snapshot_checker = nullptr; // not relevant
std::vector<std::unique_ptr<FlushJob>> flush_jobs;
k = 0;
for (auto cfd : all_cfds) {
std::vector<SequenceNumber> snapshot_seqs;
flush_jobs.emplace_back(new FlushJob(
dbname_, cfd, db_options_, *cfd->GetLatestMutableCFOptions(),
memtable_ids[k], env_options_, versions_.get(), &mutex_,
&shutting_down_, snapshot_seqs, kMaxSequenceNumber, snapshot_checker,
&job_context, FlushReason::kTest, nullptr, nullptr, nullptr,
kNoCompression, db_options_.statistics.get(), &event_logger, true,
false /* sync_output_directory */, false /* write_manifest */,
Env::Priority::USER, nullptr /*IOTracer*/,
empty_seqno_to_time_mapping_));
k++;
}
HistogramData hist;
std::vector<FileMetaData> file_metas;
// Call reserve to avoid auto-resizing
file_metas.reserve(flush_jobs.size());
mutex_.Lock();
for (auto& job : flush_jobs) {
job->PickMemTable();
}
for (auto& job : flush_jobs) {
FileMetaData meta;
// Run will release and re-acquire mutex
ASSERT_OK(job->Run(nullptr /**/, &meta));
file_metas.emplace_back(meta);
}
autovector<FileMetaData*> file_meta_ptrs;
for (auto& meta : file_metas) {
file_meta_ptrs.push_back(&meta);
}
autovector<const autovector<MemTable*>*> mems_list;
for (size_t i = 0; i != all_cfds.size(); ++i) {
const auto& mems = flush_jobs[i]->GetMemTables();
mems_list.push_back(&mems);
}
autovector<const MutableCFOptions*> mutable_cf_options_list;
for (auto cfd : all_cfds) {
mutable_cf_options_list.push_back(cfd->GetLatestMutableCFOptions());
}
autovector<std::list<std::unique_ptr<FlushJobInfo>>*>
committed_flush_jobs_info;
for (auto& job : flush_jobs) {
committed_flush_jobs_info.push_back(job->GetCommittedFlushJobsInfo());
}
Status s = InstallMemtableAtomicFlushResults(
nullptr /* imm_lists */, all_cfds, mutable_cf_options_list, mems_list,
versions_.get(), nullptr /* prep_tracker */, &mutex_, file_meta_ptrs,
committed_flush_jobs_info, &job_context.memtables_to_free,
nullptr /* db_directory */, nullptr /* log_buffer */);
ASSERT_OK(s);
mutex_.Unlock();
db_options_.statistics->histogramData(FLUSH_TIME, &hist);
ASSERT_GT(hist.average, 0.0);
k = 0;
for (const auto& file_meta : file_metas) {
ASSERT_EQ(std::to_string(0), file_meta.smallest.user_key().ToString());
ASSERT_EQ("999", file_meta.largest.user_key()
.ToString()); // max key by bytewise comparator
ASSERT_EQ(smallest_seqs[k], file_meta.fd.smallest_seqno);
ASSERT_EQ(largest_seqs[k], file_meta.fd.largest_seqno);
// Verify that imm is empty
ASSERT_EQ(std::numeric_limits<uint64_t>::max(),
all_cfds[k]->imm()->GetEarliestMemTableID());
ASSERT_EQ(0, all_cfds[k]->imm()->GetLatestMemTableID(
false /* for_atomic_flush */));
++k;
}
for (auto m : to_delete) {
delete m;
}
to_delete.clear();
job_context.Clean();
}
TEST_F(FlushJobTest, Snapshots) {
JobContext job_context(0);
auto cfd = versions_->GetColumnFamilySet()->GetDefault();
auto new_mem = cfd->ConstructNewMemtable(*cfd->GetLatestMutableCFOptions(),
kMaxSequenceNumber);
std::set<SequenceNumber> snapshots_set;
int keys = 10000;
int max_inserts_per_keys = 8;
Random rnd(301);
for (int i = 0; i < keys / 2; ++i) {
snapshots_set.insert(rnd.Uniform(keys * (max_inserts_per_keys / 2)) + 1);
}
// set has already removed the duplicate snapshots
std::vector<SequenceNumber> snapshots(snapshots_set.begin(),
snapshots_set.end());
new_mem->Ref();
SequenceNumber current_seqno = 0;
auto inserted_keys = mock::MakeMockFile();
for (int i = 1; i < keys; ++i) {
std::string key(std::to_string(i));
int insertions = rnd.Uniform(max_inserts_per_keys);
for (int j = 0; j < insertions; ++j) {
std::string value(rnd.HumanReadableString(10));
auto seqno = ++current_seqno;
ASSERT_OK(new_mem->Add(SequenceNumber(seqno), kTypeValue, key, value,
nullptr /* kv_prot_info */));
// a key is visible only if:
// 1. it's the last one written (j == insertions - 1)
// 2. there's a snapshot pointing at it
bool visible = (j == insertions - 1) ||
(snapshots_set.find(seqno) != snapshots_set.end());
if (visible) {
InternalKey internal_key(key, seqno, kTypeValue);
inserted_keys.push_back({internal_key.Encode().ToString(), value});
}
}
}
mock::SortKVVector(&inserted_keys);
autovector<MemTable*> to_delete;
new_mem->ConstructFragmentedRangeTombstones();
cfd->imm()->Add(new_mem, &to_delete);
for (auto& m : to_delete) {
delete m;
}
EventLogger event_logger(db_options_.info_log.get());
SnapshotChecker* snapshot_checker = nullptr; // not relavant
FlushJob flush_job(
dbname_, versions_->GetColumnFamilySet()->GetDefault(), db_options_,
*cfd->GetLatestMutableCFOptions(),
std::numeric_limits<uint64_t>::max() /* memtable_id */, env_options_,
versions_.get(), &mutex_, &shutting_down_, snapshots, kMaxSequenceNumber,
snapshot_checker, &job_context, FlushReason::kTest, nullptr, nullptr,
nullptr, kNoCompression, db_options_.statistics.get(), &event_logger,
true, true /* sync_output_directory */, true /* write_manifest */,
Env::Priority::USER, nullptr /*IOTracer*/, empty_seqno_to_time_mapping_);
mutex_.Lock();
flush_job.PickMemTable();
ASSERT_OK(flush_job.Run());
mutex_.Unlock();
mock_table_factory_->AssertSingleFile(inserted_keys);
HistogramData hist;
db_options_.statistics->histogramData(FLUSH_TIME, &hist);
ASSERT_GT(hist.average, 0.0);
job_context.Clean();
}
TEST_F(FlushJobTest, GetRateLimiterPriorityForWrite) {
// Prepare a FlushJob that flush MemTables of Single Column Family.
const size_t num_mems = 2;
const size_t num_mems_to_flush = 1;
const size_t num_keys_per_table = 100;
JobContext job_context(0);
ColumnFamilyData* cfd = versions_->GetColumnFamilySet()->GetDefault();
std::vector<uint64_t> memtable_ids;
std::vector<MemTable*> new_mems;
for (size_t i = 0; i != num_mems; ++i) {
MemTable* mem = cfd->ConstructNewMemtable(*cfd->GetLatestMutableCFOptions(),
kMaxSequenceNumber);
mem->SetID(i);
mem->Ref();
new_mems.emplace_back(mem);
memtable_ids.push_back(mem->GetID());
for (size_t j = 0; j < num_keys_per_table; ++j) {
std::string key(std::to_string(j + i * num_keys_per_table));
std::string value("value" + key);
ASSERT_OK(mem->Add(SequenceNumber(j + i * num_keys_per_table), kTypeValue,
key, value, nullptr /* kv_prot_info */));
}
}
autovector<MemTable*> to_delete;
for (auto mem : new_mems) {
mem->ConstructFragmentedRangeTombstones();
cfd->imm()->Add(mem, &to_delete);
}
EventLogger event_logger(db_options_.info_log.get());
SnapshotChecker* snapshot_checker = nullptr; // not relavant
assert(memtable_ids.size() == num_mems);
uint64_t smallest_memtable_id = memtable_ids.front();
uint64_t flush_memtable_id = smallest_memtable_id + num_mems_to_flush - 1;
FlushJob flush_job(
dbname_, versions_->GetColumnFamilySet()->GetDefault(), db_options_,
*cfd->GetLatestMutableCFOptions(), flush_memtable_id, env_options_,
versions_.get(), &mutex_, &shutting_down_, {}, kMaxSequenceNumber,
snapshot_checker, &job_context, FlushReason::kTest, nullptr, nullptr,
nullptr, kNoCompression, db_options_.statistics.get(), &event_logger,
true, true /* sync_output_directory */, true /* write_manifest */,
Env::Priority::USER, nullptr /*IOTracer*/, empty_seqno_to_time_mapping_);
// When the state from WriteController is normal.
ASSERT_EQ(flush_job.GetRateLimiterPriority(), Env::IO_HIGH);
WriteController* write_controller =
flush_job.versions_->GetColumnFamilySet()->write_controller();
{
// When the state from WriteController is Delayed.
std::unique_ptr<WriteControllerToken> delay_token =
write_controller->GetDelayToken(1000000);
ASSERT_EQ(flush_job.GetRateLimiterPriority(), Env::IO_USER);
}
{
// When the state from WriteController is Stopped.
std::unique_ptr<WriteControllerToken> stop_token =
write_controller->GetStopToken();
ASSERT_EQ(flush_job.GetRateLimiterPriority(), Env::IO_USER);
}
}
TEST_F(FlushJobTest, ReplaceTimedPutWriteTimeWithPreferredSeqno) {
JobContext job_context(0);
auto cfd = versions_->GetColumnFamilySet()->GetDefault();
auto new_mem = cfd->ConstructNewMemtable(*cfd->GetLatestMutableCFOptions(),
kMaxSequenceNumber);
new_mem->Ref();
std::shared_ptr<SeqnoToTimeMapping> seqno_to_time_mapping =
std::make_shared<SeqnoToTimeMapping>();
// Seqno: 10, 11, ... 20,
// Time: ... 500 ... 600
// GetProximalSeqnoBeforeTime(500) -> 10
// GetProximalSeqnoBeforeTime(600) -> 20
seqno_to_time_mapping->Append(10, 500);
seqno_to_time_mapping->Append(20, 600);
ASSERT_OK(new_mem->Add(SequenceNumber(15), kTypeValuePreferredSeqno, "bar",
ValueWithWriteTime("bval", 500),
nullptr /*kv_prot_info*/));
ASSERT_OK(new_mem->Add(SequenceNumber(18), kTypeValuePreferredSeqno, "foo",
ValueWithWriteTime("fval", 600),
nullptr /*kv_prot_info*/));
auto inserted_entries = mock::MakeMockFile();
InternalKey smallest_internal_key("bar", SequenceNumber(15),
kTypeValuePreferredSeqno);
inserted_entries.push_back({smallest_internal_key.Encode().ToString(),
ValueWithPreferredSeqno("bval", 10)});
InternalKey largest_internal_key("foo", SequenceNumber(18), kTypeValue);
inserted_entries.push_back(
{largest_internal_key.Encode().ToString(), "fval"});
autovector<MemTable*> to_delete;
new_mem->ConstructFragmentedRangeTombstones();
cfd->imm()->Add(new_mem, &to_delete);
for (auto& m : to_delete) {
delete m;
}
EventLogger event_logger(db_options_.info_log.get());
SnapshotChecker* snapshot_checker = nullptr; // not relevant
FlushJob flush_job(
dbname_, versions_->GetColumnFamilySet()->GetDefault(), db_options_,
*cfd->GetLatestMutableCFOptions(),
std::numeric_limits<uint64_t>::max() /* memtable_id */, env_options_,
versions_.get(), &mutex_, &shutting_down_, {}, kMaxSequenceNumber,
snapshot_checker, &job_context, FlushReason::kTest, nullptr, nullptr,
nullptr, kNoCompression, db_options_.statistics.get(), &event_logger,
true, true /* sync_output_directory */, true /* write_manifest */,
Env::Priority::USER, nullptr /*IOTracer*/, seqno_to_time_mapping);
FileMetaData file_meta;
mutex_.Lock();
flush_job.PickMemTable();
ASSERT_OK(flush_job.Run(nullptr, &file_meta));
mutex_.Unlock();
ASSERT_EQ(smallest_internal_key.Encode().ToString(),
file_meta.smallest.Encode().ToString());
ASSERT_EQ(largest_internal_key.Encode().ToString(),
file_meta.largest.Encode().ToString());
mock_table_factory_->AssertSingleFile(inserted_entries);
job_context.Clean();
}
// Test parameters:
// param 0): paranoid file check
// param 1): user-defined timestamp test mode
class FlushJobTimestampTest
: public FlushJobTestBase,
public testing::WithParamInterface<
std::tuple<bool, test::UserDefinedTimestampTestMode>> {
public:
FlushJobTimestampTest()
: FlushJobTestBase(test::PerThreadDBPath("flush_job_ts_gc_test"),
test::BytewiseComparatorWithU64TsWrapper()) {}
void AddKeyValueToMemtable(MemTable* memtable, std::string key, uint64_t ts,
SequenceNumber seq, ValueType value_type,
Slice value) {
std::string key_str(std::move(key));
PutFixed64(&key_str, ts);
ASSERT_OK(memtable->Add(seq, value_type, key_str, value,
nullptr /* kv_prot_info */));
}
protected:
void SetUp() override {
paranoid_file_checks_ = std::get<0>(GetParam());
auto udt_test_mode = std::get<1>(GetParam());
persist_udt_ = test::ShouldPersistUDT(udt_test_mode);
FlushJobTestBase::SetUp();
}
static constexpr uint64_t kStartTs = 10;
static constexpr SequenceNumber kStartSeq = 0;
SequenceNumber curr_seq_{kStartSeq};
std::atomic<uint64_t> curr_ts_{kStartTs};
void CheckFileMetaData(ColumnFamilyData* cfd,
const InternalKey& expected_smallest,
const InternalKey& expected_largest,
const FileMetaData* meta_from_flush) const {
ASSERT_EQ(expected_smallest.Encode(), meta_from_flush->smallest.Encode());
ASSERT_EQ(expected_largest.Encode(), meta_from_flush->largest.Encode());
const VersionStorageInfo* storage_info = cfd->current()->storage_info();
const std::vector<FileMetaData*>& l0_files = storage_info->LevelFiles(0);
ASSERT_EQ(l0_files.size(), 1);
auto installed_file_meta = l0_files[0];
ASSERT_EQ(expected_smallest.Encode(),
installed_file_meta->smallest.Encode());
ASSERT_EQ(expected_largest.Encode(), installed_file_meta->largest.Encode());
}
void CheckFullHistoryTsLow(ColumnFamilyData* cfd,
const std::string& expected_full_history_ts_low) {
ASSERT_EQ(expected_full_history_ts_low, cfd->GetFullHistoryTsLow());
}
};
TEST_P(FlushJobTimestampTest, AllKeysExpired) {
ColumnFamilyData* cfd = versions_->GetColumnFamilySet()->GetDefault();
autovector<MemTable*> to_delete;
{
MemTable* new_mem = cfd->ConstructNewMemtable(
*cfd->GetLatestMutableCFOptions(), kMaxSequenceNumber);
new_mem->Ref();
for (int i = 0; i < 100; ++i) {
uint64_t ts = curr_ts_.fetch_add(1);
SequenceNumber seq = (curr_seq_++);
AddKeyValueToMemtable(new_mem, test::EncodeInt(0), ts, seq,
ValueType::kTypeValue, "0_value");
}
uint64_t ts = curr_ts_.fetch_add(1);
SequenceNumber seq = (curr_seq_++);
AddKeyValueToMemtable(new_mem, test::EncodeInt(0), ts, seq,
ValueType::kTypeDeletionWithTimestamp, "");
new_mem->ConstructFragmentedRangeTombstones();
cfd->imm()->Add(new_mem, &to_delete);
}
std::vector<SequenceNumber> snapshots;
constexpr SnapshotChecker* const snapshot_checker = nullptr;
JobContext job_context(0);
EventLogger event_logger(db_options_.info_log.get());
std::string full_history_ts_low;
PutFixed64(&full_history_ts_low, std::numeric_limits<uint64_t>::max());
cfd->SetFullHistoryTsLow(full_history_ts_low);
FlushJob flush_job(
dbname_, cfd, db_options_, *cfd->GetLatestMutableCFOptions(),
std::numeric_limits<uint64_t>::max() /* memtable_id */, env_options_,
versions_.get(), &mutex_, &shutting_down_, snapshots, kMaxSequenceNumber,
snapshot_checker, &job_context, FlushReason::kTest, nullptr, nullptr,
nullptr, kNoCompression, db_options_.statistics.get(), &event_logger,
true, true /* sync_output_directory */, true /* write_manifest */,
Env::Priority::USER, nullptr /*IOTracer*/, empty_seqno_to_time_mapping_,
/*db_id=*/"",
/*db_session_id=*/"", full_history_ts_low);
FileMetaData fmeta;
mutex_.Lock();
flush_job.PickMemTable();
ASSERT_OK(flush_job.Run(/*prep_tracker=*/nullptr, &fmeta));
mutex_.Unlock();
{
std::string key = test::EncodeInt(0);
if (!persist_udt_) {
// When `AdvancedColumnFamilyOptions.persist_user_defined_timestamps` flag
// is set to false. The user-defined timestamp is stripped from user key
// during flush, making the user key logically containing the minimum
// timestamp.
key.append(test::EncodeInt(0));
} else {
key.append(test::EncodeInt(curr_ts_.load(std::memory_order_relaxed) - 1));
}
InternalKey ikey(key, curr_seq_ - 1, ValueType::kTypeDeletionWithTimestamp);
CheckFileMetaData(cfd, ikey, ikey, &fmeta);
CheckFullHistoryTsLow(cfd, full_history_ts_low);
}
job_context.Clean();
ASSERT_TRUE(to_delete.empty());
}
TEST_P(FlushJobTimestampTest, NoKeyExpired) {
ColumnFamilyData* cfd = versions_->GetColumnFamilySet()->GetDefault();
autovector<MemTable*> to_delete;
{
MemTable* new_mem = cfd->ConstructNewMemtable(
*cfd->GetLatestMutableCFOptions(), kMaxSequenceNumber);
new_mem->Ref();
for (int i = 0; i < 100; ++i) {
uint64_t ts = curr_ts_.fetch_add(1);
SequenceNumber seq = (curr_seq_++);
AddKeyValueToMemtable(new_mem, test::EncodeInt(0), ts, seq,
ValueType::kTypeValue, "0_value");
}
new_mem->ConstructFragmentedRangeTombstones();
cfd->imm()->Add(new_mem, &to_delete);
}
std::vector<SequenceNumber> snapshots;
SnapshotChecker* const snapshot_checker = nullptr;
JobContext job_context(0);
EventLogger event_logger(db_options_.info_log.get());
std::string full_history_ts_low;
PutFixed64(&full_history_ts_low, 0);
cfd->SetFullHistoryTsLow(full_history_ts_low);
FlushJob flush_job(
dbname_, cfd, db_options_, *cfd->GetLatestMutableCFOptions(),
std::numeric_limits<uint64_t>::max() /* memtable_id */, env_options_,
versions_.get(), &mutex_, &shutting_down_, snapshots, kMaxSequenceNumber,
snapshot_checker, &job_context, FlushReason::kTest, nullptr, nullptr,
nullptr, kNoCompression, db_options_.statistics.get(), &event_logger,
true, true /* sync_output_directory */, true /* write_manifest */,
Env::Priority::USER, nullptr /*IOTracer*/, empty_seqno_to_time_mapping_,
/*db_id=*/"",
/*db_session_id=*/"", full_history_ts_low);
FileMetaData fmeta;
mutex_.Lock();
flush_job.PickMemTable();
ASSERT_OK(flush_job.Run(/*prep_tracker=*/nullptr, &fmeta));
mutex_.Unlock();
{
std::string ukey = test::EncodeInt(0);
std::string smallest_key;
std::string largest_key;
std::string expected_full_history_ts_low;
if (!persist_udt_) {
// When `AdvancedColumnFamilyOptions.persist_user_defined_timestamps` flag
// is set to false. The user-defined timestamp is stripped from user key
// during flush, making the user key logically containing the minimum
// timestamp, which is hardcoded to be all zeros for now.
smallest_key = ukey + test::EncodeInt(0);
largest_key = ukey + test::EncodeInt(0);
// When not all keys have expired and `persist_user_defined_timestamps` is
// false. UDTs will be removed during flush, `full_history_ts_low` should
// be automatically increased to above the effective cutoff UDT in the
// flush.
PutFixed64(&expected_full_history_ts_low, curr_ts_.fetch_add(1));
} else {
smallest_key =
ukey + test::EncodeInt(curr_ts_.load(std::memory_order_relaxed) - 1);
largest_key = ukey + test::EncodeInt(kStartTs);
expected_full_history_ts_low = full_history_ts_low;
}
InternalKey smallest(smallest_key, curr_seq_ - 1, ValueType::kTypeValue);
InternalKey largest(largest_key, kStartSeq, ValueType::kTypeValue);
CheckFileMetaData(cfd, smallest, largest, &fmeta);
CheckFullHistoryTsLow(cfd, expected_full_history_ts_low);
}
job_context.Clean();
ASSERT_TRUE(to_delete.empty());
}
// Param 0: paranoid file check
// Param 1: test mode for the user-defined timestamp feature
INSTANTIATE_TEST_CASE_P(
FlushJobTimestampTest, FlushJobTimestampTest,
::testing::Combine(
::testing::Bool(),
::testing::Values(
test::UserDefinedTimestampTestMode::kStripUserDefinedTimestamp,
test::UserDefinedTimestampTestMode::kNormal)));
} // 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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