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49623f9c8e
rocksdb/db/version_set_test.cc
Yanqin Jin e0c84aa0dc Fix a race condition in WAL tracking causing DB open failure (#9715) 
Summary:
There is a race condition if WAL tracking in the MANIFEST is enabled in a database that disables 2PC.

The race condition is between two background flush threads trying to install flush results to the MANIFEST.

Consider an example database with two column families: "default" (cfd0) and "cf1" (cfd1). Initially,
both column families have one mutable (active) memtable whose data backed by 6.log.

1. Trigger a manual flush for "cf1", creating a 7.log
2. Insert another key to "default", and trigger flush for "default", creating 8.log
3. BgFlushThread1 finishes writing 9.sst
4. BgFlushThread2 finishes writing 10.sst

```
Time  BgFlushThread1                                    BgFlushThread2
 |    mutex_.Lock()
 |    precompute min_wal_to_keep as 6
 |    mutex_.Unlock()
 |                                                     mutex_.Lock()
 |                                                     precompute min_wal_to_keep as 6
 |                                                     join MANIFEST write queue and mutex_.Unlock()
 |    write to MANIFEST
 |    mutex_.Lock()
 |    cfd1->log_number = 7
 |    Signal bg_flush_2 and mutex_.Unlock()
 |                                                     wake up and mutex_.Lock()
 |                                                     cfd0->log_number = 8
 |                                                     FindObsoleteFiles() with job_context->log_number == 7
 |                                                     mutex_.Unlock()
 |                                                     PurgeObsoleteFiles() deletes 6.log
 V
```

As shown in the above, BgFlushThread2 thinks that the min wal to keep is 6.log because "cf1" has unflushed data in 6.log (cf1.log_number=6).
Similarly, BgThread1 thinks that min wal to keep is also 6.log because "default" has unflushed data (default.log_number=6).
No WAL deletion will be written to MANIFEST because 6 is equal to `versions_->wals_.min_wal_number_to_keep`,
due to https://github.com/facebook/rocksdb/blob/7.1.fb/db/memtable_list.cc#L513:L514.
The bg flush thread that finishes last will perform file purging. `job_context.log_number` will be evaluated as 7, i.e.
the min wal that contains unflushed data, causing 6.log to be deleted. However, MANIFEST thinks 6.log should still exist.
If you close the db at this point, you won't be able to re-open it if `track_and_verify_wal_in_manifest` is true.

We must handle the case of multiple bg flush threads, and it is difficult for one bg flush thread to know
the correct min wal number until the other bg flush threads have finished committing to the manifest and updated
the `cfd::log_number`.
To fix this issue, we rename an existing variable `min_log_number_to_keep_2pc` to `min_log_number_to_keep`,
and use it to track WAL file deletion in non-2pc mode as well.
This variable is updated only 1) during recovery with mutex held, or 2) in the MANIFEST write thread.
`min_log_number_to_keep` means RocksDB will delete WALs below it, although there may be WALs
above it which are also obsolete. Formally, we will have [min_wal_to_keep, max_obsolete_wal]. During recovery, we
make sure that only WALs above max_obsolete_wal are checked and added back to `alive_log_files_`.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9715

Test Plan:
```
make check
```
Also ran stress test below (with asan) to make sure it completes successfully.
```
TEST_TMPDIR=/dev/shm/rocksdb OPT=-g ASAN_OPTIONS=disable_coredump=0 \
CRASH_TEST_EXT_ARGS=--compression_type=zstd SKIP_FORMAT_BUCK_CHECKS=1 \
make J=52 -j52 blackbox_asan_crash_test
```

Reviewed By: ltamasi

Differential Revision: D34984412

Pulled By: riversand963

fbshipit-source-id: c7b21a8d84751bb55ea79c9f387103d21b231005
2022-03-23 19:41:31 -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 "db/version_set.h"
#include <algorithm>
#include "db/db_impl/db_impl.h"
#include "db/log_writer.h"
#include "rocksdb/advanced_options.h"
#include "rocksdb/convenience.h"
#include "rocksdb/file_system.h"
#include "table/block_based/block_based_table_factory.h"
#include "table/mock_table.h"
#include "test_util/testharness.h"
#include "test_util/testutil.h"
#include "util/string_util.h"
namespace ROCKSDB_NAMESPACE {
class GenerateLevelFilesBriefTest : public testing::Test {
public:
std::vector<FileMetaData*> files_;
LevelFilesBrief file_level_;
Arena arena_;
GenerateLevelFilesBriefTest() { }
~GenerateLevelFilesBriefTest() override {
for (size_t i = 0; i < files_.size(); i++) {
delete files_[i];
}
}
void Add(const char* smallest, const char* largest,
SequenceNumber smallest_seq = 100,
SequenceNumber largest_seq = 100) {
FileMetaData* f = new FileMetaData(
files_.size() + 1, 0, 0,
InternalKey(smallest, smallest_seq, kTypeValue),
InternalKey(largest, largest_seq, kTypeValue), smallest_seq,
largest_seq, /* marked_for_compact */ false, Temperature::kUnknown,
kInvalidBlobFileNumber, kUnknownOldestAncesterTime,
kUnknownFileCreationTime, kUnknownFileChecksum,
kUnknownFileChecksumFuncName, kDisableUserTimestamp,
kDisableUserTimestamp);
files_.push_back(f);
}
int Compare() {
int diff = 0;
for (size_t i = 0; i < files_.size(); i++) {
if (file_level_.files[i].fd.GetNumber() != files_[i]->fd.GetNumber()) {
diff++;
}
}
return diff;
}
};
TEST_F(GenerateLevelFilesBriefTest, Empty) {
DoGenerateLevelFilesBrief(&file_level_, files_, &arena_);
ASSERT_EQ(0u, file_level_.num_files);
ASSERT_EQ(0, Compare());
}
TEST_F(GenerateLevelFilesBriefTest, Single) {
Add("p", "q");
DoGenerateLevelFilesBrief(&file_level_, files_, &arena_);
ASSERT_EQ(1u, file_level_.num_files);
ASSERT_EQ(0, Compare());
}
TEST_F(GenerateLevelFilesBriefTest, Multiple) {
Add("150", "200");
Add("200", "250");
Add("300", "350");
Add("400", "450");
DoGenerateLevelFilesBrief(&file_level_, files_, &arena_);
ASSERT_EQ(4u, file_level_.num_files);
ASSERT_EQ(0, Compare());
}
class CountingLogger : public Logger {
public:
CountingLogger() : log_count(0) {}
using Logger::Logv;
void Logv(const char* /*format*/, va_list /*ap*/) override { log_count++; }
int log_count;
};
Options GetOptionsWithNumLevels(int num_levels,
std::shared_ptr<CountingLogger> logger) {
Options opt;
opt.num_levels = num_levels;
opt.info_log = logger;
return opt;
}
class VersionStorageInfoTestBase : public testing::Test {
public:
const Comparator* ucmp_;
InternalKeyComparator icmp_;
std::shared_ptr<CountingLogger> logger_;
Options options_;
ImmutableOptions ioptions_;
MutableCFOptions mutable_cf_options_;
VersionStorageInfo vstorage_;
InternalKey GetInternalKey(const char* ukey,
SequenceNumber smallest_seq = 100) {
return InternalKey(ukey, smallest_seq, kTypeValue);
}
explicit VersionStorageInfoTestBase(const Comparator* ucmp)
: ucmp_(ucmp),
icmp_(ucmp_),
logger_(new CountingLogger()),
options_(GetOptionsWithNumLevels(6, logger_)),
ioptions_(options_),
mutable_cf_options_(options_),
vstorage_(&icmp_, ucmp_, 6, kCompactionStyleLevel,
/*src_vstorage=*/nullptr,
/*_force_consistency_checks=*/false) {}
~VersionStorageInfoTestBase() override {
for (int i = 0; i < vstorage_.num_levels(); ++i) {
for (auto* f : vstorage_.LevelFiles(i)) {
if (--f->refs == 0) {
delete f;
}
}
}
}
void Add(int level, uint32_t file_number, const char* smallest,
const char* largest, uint64_t file_size = 0,
uint64_t oldest_blob_file_number = kInvalidBlobFileNumber) {
constexpr SequenceNumber dummy_seq = 0;
Add(level, file_number, GetInternalKey(smallest, dummy_seq),
GetInternalKey(largest, dummy_seq), file_size, oldest_blob_file_number);
}
void Add(int level, uint32_t file_number, const InternalKey& smallest,
const InternalKey& largest, uint64_t file_size = 0,
uint64_t oldest_blob_file_number = kInvalidBlobFileNumber) {
assert(level < vstorage_.num_levels());
FileMetaData* f = new FileMetaData(
file_number, 0, file_size, smallest, largest, /* smallest_seq */ 0,
/* largest_seq */ 0, /* marked_for_compact */ false,
Temperature::kUnknown, oldest_blob_file_number,
kUnknownOldestAncesterTime, kUnknownFileCreationTime,
kUnknownFileChecksum, kUnknownFileChecksumFuncName,
kDisableUserTimestamp, kDisableUserTimestamp);
f->compensated_file_size = file_size;
vstorage_.AddFile(level, f);
}
void AddBlob(uint64_t blob_file_number, uint64_t total_blob_count,
uint64_t total_blob_bytes,
BlobFileMetaData::LinkedSsts linked_ssts,
uint64_t garbage_blob_count, uint64_t garbage_blob_bytes) {
auto shared_meta = SharedBlobFileMetaData::Create(
blob_file_number, total_blob_count, total_blob_bytes,
/* checksum_method */ std::string(),
/* checksum_value */ std::string());
auto meta =
BlobFileMetaData::Create(std::move(shared_meta), std::move(linked_ssts),
garbage_blob_count, garbage_blob_bytes);
vstorage_.AddBlobFile(std::move(meta));
}
void UpdateVersionStorageInfo() {
vstorage_.PrepareForVersionAppend(ioptions_, mutable_cf_options_);
vstorage_.SetFinalized();
}
std::string GetOverlappingFiles(int level, const InternalKey& begin,
const InternalKey& end) {
std::vector<FileMetaData*> inputs;
vstorage_.GetOverlappingInputs(level, &begin, &end, &inputs);
std::string result;
for (size_t i = 0; i < inputs.size(); ++i) {
if (i > 0) {
result += ",";
}
AppendNumberTo(&result, inputs[i]->fd.GetNumber());
}
return result;
}
};
class VersionStorageInfoTest : public VersionStorageInfoTestBase {
public:
VersionStorageInfoTest() : VersionStorageInfoTestBase(BytewiseComparator()) {}
~VersionStorageInfoTest() override {}
};
TEST_F(VersionStorageInfoTest, MaxBytesForLevelStatic) {
ioptions_.level_compaction_dynamic_level_bytes = false;
mutable_cf_options_.max_bytes_for_level_base = 10;
mutable_cf_options_.max_bytes_for_level_multiplier = 5;
Add(4, 100U, "1", "2", 100U);
Add(5, 101U, "1", "2", 100U);
UpdateVersionStorageInfo();
ASSERT_EQ(vstorage_.MaxBytesForLevel(1), 10U);
ASSERT_EQ(vstorage_.MaxBytesForLevel(2), 50U);
ASSERT_EQ(vstorage_.MaxBytesForLevel(3), 250U);
ASSERT_EQ(vstorage_.MaxBytesForLevel(4), 1250U);
ASSERT_EQ(0, logger_->log_count);
}
TEST_F(VersionStorageInfoTest, MaxBytesForLevelDynamic_1) {
ioptions_.level_compaction_dynamic_level_bytes = true;
mutable_cf_options_.max_bytes_for_level_base = 1000;
mutable_cf_options_.max_bytes_for_level_multiplier = 5;
Add(5, 1U, "1", "2", 500U);
UpdateVersionStorageInfo();
ASSERT_EQ(0, logger_->log_count);
ASSERT_EQ(vstorage_.base_level(), 5);
}
TEST_F(VersionStorageInfoTest, MaxBytesForLevelDynamic_2) {
ioptions_.level_compaction_dynamic_level_bytes = true;
mutable_cf_options_.max_bytes_for_level_base = 1000;
mutable_cf_options_.max_bytes_for_level_multiplier = 5;
Add(5, 1U, "1", "2", 500U);
Add(5, 2U, "3", "4", 550U);
UpdateVersionStorageInfo();
ASSERT_EQ(0, logger_->log_count);
ASSERT_EQ(vstorage_.MaxBytesForLevel(4), 1000U);
ASSERT_EQ(vstorage_.base_level(), 4);
}
TEST_F(VersionStorageInfoTest, MaxBytesForLevelDynamic_3) {
ioptions_.level_compaction_dynamic_level_bytes = true;
mutable_cf_options_.max_bytes_for_level_base = 1000;
mutable_cf_options_.max_bytes_for_level_multiplier = 5;
Add(5, 1U, "1", "2", 500U);
Add(5, 2U, "3", "4", 550U);
Add(4, 3U, "3", "4", 550U);
UpdateVersionStorageInfo();
ASSERT_EQ(0, logger_->log_count);
ASSERT_EQ(vstorage_.MaxBytesForLevel(4), 1000U);
ASSERT_EQ(vstorage_.base_level(), 4);
}
TEST_F(VersionStorageInfoTest, MaxBytesForLevelDynamic_4) {
ioptions_.level_compaction_dynamic_level_bytes = true;
mutable_cf_options_.max_bytes_for_level_base = 1000;
mutable_cf_options_.max_bytes_for_level_multiplier = 5;
Add(5, 1U, "1", "2", 500U);
Add(5, 2U, "3", "4", 550U);
Add(4, 3U, "3", "4", 550U);
Add(3, 4U, "3", "4", 250U);
Add(3, 5U, "5", "7", 300U);
UpdateVersionStorageInfo();
ASSERT_EQ(1, logger_->log_count);
ASSERT_EQ(vstorage_.MaxBytesForLevel(4), 1005U);
ASSERT_EQ(vstorage_.MaxBytesForLevel(3), 1000U);
ASSERT_EQ(vstorage_.base_level(), 3);
}
TEST_F(VersionStorageInfoTest, MaxBytesForLevelDynamic_5) {
ioptions_.level_compaction_dynamic_level_bytes = true;
mutable_cf_options_.max_bytes_for_level_base = 1000;
mutable_cf_options_.max_bytes_for_level_multiplier = 5;
Add(5, 1U, "1", "2", 500U);
Add(5, 2U, "3", "4", 550U);
Add(4, 3U, "3", "4", 550U);
Add(3, 4U, "3", "4", 250U);
Add(3, 5U, "5", "7", 300U);
Add(1, 6U, "3", "4", 5U);
Add(1, 7U, "8", "9", 5U);
UpdateVersionStorageInfo();
ASSERT_EQ(1, logger_->log_count);
ASSERT_GT(vstorage_.MaxBytesForLevel(4), 1005U);
ASSERT_GT(vstorage_.MaxBytesForLevel(3), 1005U);
ASSERT_EQ(vstorage_.MaxBytesForLevel(2), 1005U);
ASSERT_EQ(vstorage_.MaxBytesForLevel(1), 1000U);
ASSERT_EQ(vstorage_.base_level(), 1);
}
TEST_F(VersionStorageInfoTest, MaxBytesForLevelDynamicLotsOfData) {
ioptions_.level_compaction_dynamic_level_bytes = true;
mutable_cf_options_.max_bytes_for_level_base = 100;
mutable_cf_options_.max_bytes_for_level_multiplier = 2;
Add(0, 1U, "1", "2", 50U);
Add(1, 2U, "1", "2", 50U);
Add(2, 3U, "1", "2", 500U);
Add(3, 4U, "1", "2", 500U);
Add(4, 5U, "1", "2", 1700U);
Add(5, 6U, "1", "2", 500U);
UpdateVersionStorageInfo();
ASSERT_EQ(vstorage_.MaxBytesForLevel(4), 800U);
ASSERT_EQ(vstorage_.MaxBytesForLevel(3), 400U);
ASSERT_EQ(vstorage_.MaxBytesForLevel(2), 200U);
ASSERT_EQ(vstorage_.MaxBytesForLevel(1), 100U);
ASSERT_EQ(vstorage_.base_level(), 1);
ASSERT_EQ(0, logger_->log_count);
}
TEST_F(VersionStorageInfoTest, MaxBytesForLevelDynamicLargeLevel) {
uint64_t kOneGB = 1000U * 1000U * 1000U;
ioptions_.level_compaction_dynamic_level_bytes = true;
mutable_cf_options_.max_bytes_for_level_base = 10U * kOneGB;
mutable_cf_options_.max_bytes_for_level_multiplier = 10;
Add(0, 1U, "1", "2", 50U);
Add(3, 4U, "1", "2", 32U * kOneGB);
Add(4, 5U, "1", "2", 500U * kOneGB);
Add(5, 6U, "1", "2", 3000U * kOneGB);
UpdateVersionStorageInfo();
ASSERT_EQ(vstorage_.MaxBytesForLevel(5), 3000U * kOneGB);
ASSERT_EQ(vstorage_.MaxBytesForLevel(4), 300U * kOneGB);
ASSERT_EQ(vstorage_.MaxBytesForLevel(3), 30U * kOneGB);
ASSERT_EQ(vstorage_.MaxBytesForLevel(2), 10U * kOneGB);
ASSERT_EQ(vstorage_.base_level(), 2);
ASSERT_EQ(0, logger_->log_count);
}
TEST_F(VersionStorageInfoTest, MaxBytesForLevelDynamicWithLargeL0_1) {
ioptions_.level_compaction_dynamic_level_bytes = true;
mutable_cf_options_.max_bytes_for_level_base = 40000;
mutable_cf_options_.max_bytes_for_level_multiplier = 5;
mutable_cf_options_.level0_file_num_compaction_trigger = 2;
Add(0, 1U, "1", "2", 10000U);
Add(0, 2U, "1", "2", 10000U);
Add(0, 3U, "1", "2", 10000U);
Add(5, 4U, "1", "2", 1286250U);
Add(4, 5U, "1", "2", 200000U);
Add(3, 6U, "1", "2", 40000U);
Add(2, 7U, "1", "2", 8000U);
UpdateVersionStorageInfo();
ASSERT_EQ(0, logger_->log_count);
ASSERT_EQ(2, vstorage_.base_level());
// level multiplier should be 3.5
ASSERT_EQ(vstorage_.level_multiplier(), 5.0);
// Level size should be around 30,000, 105,000, 367,500
ASSERT_EQ(40000U, vstorage_.MaxBytesForLevel(2));
ASSERT_EQ(51450U, vstorage_.MaxBytesForLevel(3));
ASSERT_EQ(257250U, vstorage_.MaxBytesForLevel(4));
}
TEST_F(VersionStorageInfoTest, MaxBytesForLevelDynamicWithLargeL0_2) {
ioptions_.level_compaction_dynamic_level_bytes = true;
mutable_cf_options_.max_bytes_for_level_base = 10000;
mutable_cf_options_.max_bytes_for_level_multiplier = 5;
mutable_cf_options_.level0_file_num_compaction_trigger = 2;
Add(0, 11U, "1", "2", 10000U);
Add(0, 12U, "1", "2", 10000U);
Add(0, 13U, "1", "2", 10000U);
Add(5, 4U, "1", "2", 1286250U);
Add(4, 5U, "1", "2", 200000U);
Add(3, 6U, "1", "2", 40000U);
Add(2, 7U, "1", "2", 8000U);
UpdateVersionStorageInfo();
ASSERT_EQ(0, logger_->log_count);
ASSERT_EQ(2, vstorage_.base_level());
// level multiplier should be 3.5
ASSERT_LT(vstorage_.level_multiplier(), 3.6);
ASSERT_GT(vstorage_.level_multiplier(), 3.4);
// Level size should be around 30,000, 105,000, 367,500
ASSERT_EQ(30000U, vstorage_.MaxBytesForLevel(2));
ASSERT_LT(vstorage_.MaxBytesForLevel(3), 110000U);
ASSERT_GT(vstorage_.MaxBytesForLevel(3), 100000U);
ASSERT_LT(vstorage_.MaxBytesForLevel(4), 370000U);
ASSERT_GT(vstorage_.MaxBytesForLevel(4), 360000U);
}
TEST_F(VersionStorageInfoTest, MaxBytesForLevelDynamicWithLargeL0_3) {
ioptions_.level_compaction_dynamic_level_bytes = true;
mutable_cf_options_.max_bytes_for_level_base = 10000;
mutable_cf_options_.max_bytes_for_level_multiplier = 5;
mutable_cf_options_.level0_file_num_compaction_trigger = 2;
Add(0, 11U, "1", "2", 5000U);
Add(0, 12U, "1", "2", 5000U);
Add(0, 13U, "1", "2", 5000U);
Add(0, 14U, "1", "2", 5000U);
Add(0, 15U, "1", "2", 5000U);
Add(0, 16U, "1", "2", 5000U);
Add(5, 4U, "1", "2", 1286250U);
Add(4, 5U, "1", "2", 200000U);
Add(3, 6U, "1", "2", 40000U);
Add(2, 7U, "1", "2", 8000U);
UpdateVersionStorageInfo();
ASSERT_EQ(0, logger_->log_count);
ASSERT_EQ(2, vstorage_.base_level());
// level multiplier should be 3.5
ASSERT_LT(vstorage_.level_multiplier(), 3.6);
ASSERT_GT(vstorage_.level_multiplier(), 3.4);
// Level size should be around 30,000, 105,000, 367,500
ASSERT_EQ(30000U, vstorage_.MaxBytesForLevel(2));
ASSERT_LT(vstorage_.MaxBytesForLevel(3), 110000U);
ASSERT_GT(vstorage_.MaxBytesForLevel(3), 100000U);
ASSERT_LT(vstorage_.MaxBytesForLevel(4), 370000U);
ASSERT_GT(vstorage_.MaxBytesForLevel(4), 360000U);
}
TEST_F(VersionStorageInfoTest, EstimateLiveDataSize) {
// Test whether the overlaps are detected as expected
Add(1, 1U, "4", "7", 1U); // Perfect overlap with last level
Add(2, 2U, "3", "5", 1U); // Partial overlap with last level
Add(2, 3U, "6", "8", 1U); // Partial overlap with last level
Add(3, 4U, "1", "9", 1U); // Contains range of last level
Add(4, 5U, "4", "5", 1U); // Inside range of last level
Add(4, 6U, "6", "7", 1U); // Inside range of last level
Add(5, 7U, "4", "7", 10U);
UpdateVersionStorageInfo();
ASSERT_EQ(10U, vstorage_.EstimateLiveDataSize());
}
TEST_F(VersionStorageInfoTest, EstimateLiveDataSize2) {
Add(0, 1U, "9", "9", 1U); // Level 0 is not ordered
Add(0, 2U, "5", "6", 1U); // Ignored because of [5,6] in l1
Add(1, 3U, "1", "2", 1U); // Ignored because of [2,3] in l2
Add(1, 4U, "3", "4", 1U); // Ignored because of [2,3] in l2
Add(1, 5U, "5", "6", 1U);
Add(2, 6U, "2", "3", 1U);
Add(3, 7U, "7", "8", 1U);
UpdateVersionStorageInfo();
ASSERT_EQ(4U, vstorage_.EstimateLiveDataSize());
}
TEST_F(VersionStorageInfoTest, GetOverlappingInputs) {
// Two files that overlap at the range deletion tombstone sentinel.
Add(1, 1U, {"a", 0, kTypeValue}, {"b", kMaxSequenceNumber, kTypeRangeDeletion}, 1);
Add(1, 2U, {"b", 0, kTypeValue}, {"c", 0, kTypeValue}, 1);
// Two files that overlap at the same user key.
Add(1, 3U, {"d", 0, kTypeValue}, {"e", kMaxSequenceNumber, kTypeValue}, 1);
Add(1, 4U, {"e", 0, kTypeValue}, {"f", 0, kTypeValue}, 1);
// Two files that do not overlap.
Add(1, 5U, {"g", 0, kTypeValue}, {"h", 0, kTypeValue}, 1);
Add(1, 6U, {"i", 0, kTypeValue}, {"j", 0, kTypeValue}, 1);
UpdateVersionStorageInfo();
ASSERT_EQ("1,2", GetOverlappingFiles(
1, {"a", 0, kTypeValue}, {"b", 0, kTypeValue}));
ASSERT_EQ("1", GetOverlappingFiles(
1, {"a", 0, kTypeValue}, {"b", kMaxSequenceNumber, kTypeRangeDeletion}));
ASSERT_EQ("2", GetOverlappingFiles(
1, {"b", kMaxSequenceNumber, kTypeValue}, {"c", 0, kTypeValue}));
ASSERT_EQ("3,4", GetOverlappingFiles(
1, {"d", 0, kTypeValue}, {"e", 0, kTypeValue}));
ASSERT_EQ("3", GetOverlappingFiles(
1, {"d", 0, kTypeValue}, {"e", kMaxSequenceNumber, kTypeRangeDeletion}));
ASSERT_EQ("3,4", GetOverlappingFiles(
1, {"e", kMaxSequenceNumber, kTypeValue}, {"f", 0, kTypeValue}));
ASSERT_EQ("3,4", GetOverlappingFiles(
1, {"e", 0, kTypeValue}, {"f", 0, kTypeValue}));
ASSERT_EQ("5", GetOverlappingFiles(
1, {"g", 0, kTypeValue}, {"h", 0, kTypeValue}));
ASSERT_EQ("6", GetOverlappingFiles(
1, {"i", 0, kTypeValue}, {"j", 0, kTypeValue}));
}
TEST_F(VersionStorageInfoTest, FileLocationAndMetaDataByNumber) {
Add(0, 11U, "1", "2", 5000U);
Add(0, 12U, "1", "2", 5000U);
Add(2, 7U, "1", "2", 8000U);
UpdateVersionStorageInfo();
ASSERT_EQ(vstorage_.GetFileLocation(11U),
VersionStorageInfo::FileLocation(0, 0));
ASSERT_NE(vstorage_.GetFileMetaDataByNumber(11U), nullptr);
ASSERT_EQ(vstorage_.GetFileLocation(12U),
VersionStorageInfo::FileLocation(0, 1));
ASSERT_NE(vstorage_.GetFileMetaDataByNumber(12U), nullptr);
ASSERT_EQ(vstorage_.GetFileLocation(7U),
VersionStorageInfo::FileLocation(2, 0));
ASSERT_NE(vstorage_.GetFileMetaDataByNumber(7U), nullptr);
ASSERT_FALSE(vstorage_.GetFileLocation(999U).IsValid());
ASSERT_EQ(vstorage_.GetFileMetaDataByNumber(999U), nullptr);
}
TEST_F(VersionStorageInfoTest, ForcedBlobGCEmpty) {
// No SST or blob files in VersionStorageInfo
UpdateVersionStorageInfo();
constexpr double age_cutoff = 0.5;
constexpr double force_threshold = 0.75;
vstorage_.ComputeFilesMarkedForForcedBlobGC(age_cutoff, force_threshold);
ASSERT_TRUE(vstorage_.FilesMarkedForForcedBlobGC().empty());
}
TEST_F(VersionStorageInfoTest, ForcedBlobGCSingleBatch) {
// Test the edge case when all blob files are part of the oldest batch.
// We have one L0 SST file #1, and four blob files #10, #11, #12, and #13.
// The oldest blob file used by SST #1 is blob file #10.
constexpr int level = 0;
constexpr uint64_t sst = 1;
constexpr uint64_t first_blob = 10;
constexpr uint64_t second_blob = 11;
constexpr uint64_t third_blob = 12;
constexpr uint64_t fourth_blob = 13;
{
constexpr char smallest[] = "bar1";
constexpr char largest[] = "foo1";
constexpr uint64_t file_size = 1000;
Add(level, sst, smallest, largest, file_size, first_blob);
}
{
constexpr uint64_t total_blob_count = 10;
constexpr uint64_t total_blob_bytes = 100000;
constexpr uint64_t garbage_blob_count = 2;
constexpr uint64_t garbage_blob_bytes = 15000;
AddBlob(first_blob, total_blob_count, total_blob_bytes,
BlobFileMetaData::LinkedSsts{sst}, garbage_blob_count,
garbage_blob_bytes);
}
{
constexpr uint64_t total_blob_count = 4;
constexpr uint64_t total_blob_bytes = 400000;
constexpr uint64_t garbage_blob_count = 3;
constexpr uint64_t garbage_blob_bytes = 235000;
AddBlob(second_blob, total_blob_count, total_blob_bytes,
BlobFileMetaData::LinkedSsts{}, garbage_blob_count,
garbage_blob_bytes);
}
{
constexpr uint64_t total_blob_count = 20;
constexpr uint64_t total_blob_bytes = 1000000;
constexpr uint64_t garbage_blob_count = 8;
constexpr uint64_t garbage_blob_bytes = 400000;
AddBlob(third_blob, total_blob_count, total_blob_bytes,
BlobFileMetaData::LinkedSsts{}, garbage_blob_count,
garbage_blob_bytes);
}
{
constexpr uint64_t total_blob_count = 128;
constexpr uint64_t total_blob_bytes = 1000000;
constexpr uint64_t garbage_blob_count = 67;
constexpr uint64_t garbage_blob_bytes = 600000;
AddBlob(fourth_blob, total_blob_count, total_blob_bytes,
BlobFileMetaData::LinkedSsts{}, garbage_blob_count,
garbage_blob_bytes);
}
UpdateVersionStorageInfo();
assert(vstorage_.num_levels() > 0);
const auto& level_files = vstorage_.LevelFiles(level);
assert(level_files.size() == 1);
assert(level_files[0] && level_files[0]->fd.GetNumber() == sst);
// No blob files eligible for GC due to the age cutoff
{
constexpr double age_cutoff = 0.1;
constexpr double force_threshold = 0.0;
vstorage_.ComputeFilesMarkedForForcedBlobGC(age_cutoff, force_threshold);
ASSERT_TRUE(vstorage_.FilesMarkedForForcedBlobGC().empty());
}
// Part of the oldest batch of blob files (specifically, #12 and #13) is
// ineligible for GC due to the age cutoff
{
constexpr double age_cutoff = 0.5;
constexpr double force_threshold = 0.0;
vstorage_.ComputeFilesMarkedForForcedBlobGC(age_cutoff, force_threshold);
ASSERT_TRUE(vstorage_.FilesMarkedForForcedBlobGC().empty());
}
// Oldest batch is eligible based on age cutoff but its overall garbage ratio
// is below threshold
{
constexpr double age_cutoff = 1.0;
constexpr double force_threshold = 0.6;
vstorage_.ComputeFilesMarkedForForcedBlobGC(age_cutoff, force_threshold);
ASSERT_TRUE(vstorage_.FilesMarkedForForcedBlobGC().empty());
}
// Oldest batch is eligible based on age cutoff and its overall garbage ratio
// meets threshold
{
constexpr double age_cutoff = 1.0;
constexpr double force_threshold = 0.5;
vstorage_.ComputeFilesMarkedForForcedBlobGC(age_cutoff, force_threshold);
auto ssts_to_be_compacted = vstorage_.FilesMarkedForForcedBlobGC();
ASSERT_EQ(ssts_to_be_compacted.size(), 1);
const autovector<std::pair<int, FileMetaData*>>
expected_ssts_to_be_compacted{{level, level_files[0]}};
ASSERT_EQ(ssts_to_be_compacted[0], expected_ssts_to_be_compacted[0]);
}
}
TEST_F(VersionStorageInfoTest, ForcedBlobGCMultipleBatches) {
// Add three L0 SSTs (1, 2, and 3) and four blob files (10, 11, 12, and 13).
// The first two SSTs have the same oldest blob file, namely, the very oldest
// one (10), while the third SST's oldest blob file reference points to the
// third blob file (12). Thus, the oldest batch of blob files contains the
// first two blob files 10 and 11, and assuming they are eligible for GC based
// on the age cutoff, compacting away the SSTs 1 and 2 will eliminate them.
constexpr int level = 0;
constexpr uint64_t first_sst = 1;
constexpr uint64_t second_sst = 2;
constexpr uint64_t third_sst = 3;
constexpr uint64_t first_blob = 10;
constexpr uint64_t second_blob = 11;
constexpr uint64_t third_blob = 12;
constexpr uint64_t fourth_blob = 13;
{
constexpr char smallest[] = "bar1";
constexpr char largest[] = "foo1";
constexpr uint64_t file_size = 1000;
Add(level, first_sst, smallest, largest, file_size, first_blob);
}
{
constexpr char smallest[] = "bar2";
constexpr char largest[] = "foo2";
constexpr uint64_t file_size = 2000;
Add(level, second_sst, smallest, largest, file_size, first_blob);
}
{
constexpr char smallest[] = "bar3";
constexpr char largest[] = "foo3";
constexpr uint64_t file_size = 3000;
Add(level, third_sst, smallest, largest, file_size, third_blob);
}
{
constexpr uint64_t total_blob_count = 10;
constexpr uint64_t total_blob_bytes = 100000;
constexpr uint64_t garbage_blob_count = 2;
constexpr uint64_t garbage_blob_bytes = 15000;
AddBlob(first_blob, total_blob_count, total_blob_bytes,
BlobFileMetaData::LinkedSsts{first_sst, second_sst},
garbage_blob_count, garbage_blob_bytes);
}
{
constexpr uint64_t total_blob_count = 4;
constexpr uint64_t total_blob_bytes = 400000;
constexpr uint64_t garbage_blob_count = 3;
constexpr uint64_t garbage_blob_bytes = 235000;
AddBlob(second_blob, total_blob_count, total_blob_bytes,
BlobFileMetaData::LinkedSsts{}, garbage_blob_count,
garbage_blob_bytes);
}
{
constexpr uint64_t total_blob_count = 20;
constexpr uint64_t total_blob_bytes = 1000000;
constexpr uint64_t garbage_blob_count = 8;
constexpr uint64_t garbage_blob_bytes = 123456;
AddBlob(third_blob, total_blob_count, total_blob_bytes,
BlobFileMetaData::LinkedSsts{third_sst}, garbage_blob_count,
garbage_blob_bytes);
}
{
constexpr uint64_t total_blob_count = 128;
constexpr uint64_t total_blob_bytes = 789012345;
constexpr uint64_t garbage_blob_count = 67;
constexpr uint64_t garbage_blob_bytes = 88888888;
AddBlob(fourth_blob, total_blob_count, total_blob_bytes,
BlobFileMetaData::LinkedSsts{}, garbage_blob_count,
garbage_blob_bytes);
}
UpdateVersionStorageInfo();
assert(vstorage_.num_levels() > 0);
const auto& level_files = vstorage_.LevelFiles(level);
assert(level_files.size() == 3);
assert(level_files[0] && level_files[0]->fd.GetNumber() == first_sst);
assert(level_files[1] && level_files[1]->fd.GetNumber() == second_sst);
assert(level_files[2] && level_files[2]->fd.GetNumber() == third_sst);
// No blob files eligible for GC due to the age cutoff
{
constexpr double age_cutoff = 0.1;
constexpr double force_threshold = 0.0;
vstorage_.ComputeFilesMarkedForForcedBlobGC(age_cutoff, force_threshold);
ASSERT_TRUE(vstorage_.FilesMarkedForForcedBlobGC().empty());
}
// Part of the oldest batch of blob files (specifically, the second file) is
// ineligible for GC due to the age cutoff
{
constexpr double age_cutoff = 0.25;
constexpr double force_threshold = 0.0;
vstorage_.ComputeFilesMarkedForForcedBlobGC(age_cutoff, force_threshold);
ASSERT_TRUE(vstorage_.FilesMarkedForForcedBlobGC().empty());
}
// Oldest batch is eligible based on age cutoff but its overall garbage ratio
// is below threshold
{
constexpr double age_cutoff = 0.5;
constexpr double force_threshold = 0.6;
vstorage_.ComputeFilesMarkedForForcedBlobGC(age_cutoff, force_threshold);
ASSERT_TRUE(vstorage_.FilesMarkedForForcedBlobGC().empty());
}
// Oldest batch is eligible based on age cutoff and its overall garbage ratio
// meets threshold
{
constexpr double age_cutoff = 0.5;
constexpr double force_threshold = 0.5;
vstorage_.ComputeFilesMarkedForForcedBlobGC(age_cutoff, force_threshold);
auto ssts_to_be_compacted = vstorage_.FilesMarkedForForcedBlobGC();
ASSERT_EQ(ssts_to_be_compacted.size(), 2);
std::sort(ssts_to_be_compacted.begin(), ssts_to_be_compacted.end(),
[](const std::pair<int, FileMetaData*>& lhs,
const std::pair<int, FileMetaData*>& rhs) {
assert(lhs.second);
assert(rhs.second);
return lhs.second->fd.GetNumber() < rhs.second->fd.GetNumber();
});
const autovector<std::pair<int, FileMetaData*>>
expected_ssts_to_be_compacted{{level, level_files[0]},
{level, level_files[1]}};
ASSERT_EQ(ssts_to_be_compacted[0], expected_ssts_to_be_compacted[0]);
ASSERT_EQ(ssts_to_be_compacted[1], expected_ssts_to_be_compacted[1]);
}
// Now try the last two cases again with a greater than necessary age cutoff
// Oldest batch is eligible based on age cutoff but its overall garbage ratio
// is below threshold
{
constexpr double age_cutoff = 0.75;
constexpr double force_threshold = 0.6;
vstorage_.ComputeFilesMarkedForForcedBlobGC(age_cutoff, force_threshold);
ASSERT_TRUE(vstorage_.FilesMarkedForForcedBlobGC().empty());
}
// Oldest batch is eligible based on age cutoff and its overall garbage ratio
// meets threshold
{
constexpr double age_cutoff = 0.75;
constexpr double force_threshold = 0.5;
vstorage_.ComputeFilesMarkedForForcedBlobGC(age_cutoff, force_threshold);
auto ssts_to_be_compacted = vstorage_.FilesMarkedForForcedBlobGC();
ASSERT_EQ(ssts_to_be_compacted.size(), 2);
std::sort(ssts_to_be_compacted.begin(), ssts_to_be_compacted.end(),
[](const std::pair<int, FileMetaData*>& lhs,
const std::pair<int, FileMetaData*>& rhs) {
assert(lhs.second);
assert(rhs.second);
return lhs.second->fd.GetNumber() < rhs.second->fd.GetNumber();
});
const autovector<std::pair<int, FileMetaData*>>
expected_ssts_to_be_compacted{{level, level_files[0]},
{level, level_files[1]}};
ASSERT_EQ(ssts_to_be_compacted[0], expected_ssts_to_be_compacted[0]);
ASSERT_EQ(ssts_to_be_compacted[1], expected_ssts_to_be_compacted[1]);
}
}
class VersionStorageInfoTimestampTest : public VersionStorageInfoTestBase {
public:
VersionStorageInfoTimestampTest()
: VersionStorageInfoTestBase(test::BytewiseComparatorWithU64TsWrapper()) {
}
~VersionStorageInfoTimestampTest() override {}
std::string Timestamp(uint64_t ts) const {
std::string ret;
PutFixed64(&ret, ts);
return ret;
}
std::string PackUserKeyAndTimestamp(const Slice& ukey, uint64_t ts) const {
std::string ret;
ret.assign(ukey.data(), ukey.size());
PutFixed64(&ret, ts);
return ret;
}
};
TEST_F(VersionStorageInfoTimestampTest, GetOverlappingInputs) {
Add(/*level=*/1, /*file_number=*/1, /*smallest=*/
{PackUserKeyAndTimestamp("a", /*ts=*/9), /*s=*/0, kTypeValue},
/*largest=*/
{PackUserKeyAndTimestamp("a", /*ts=*/8), /*s=*/0, kTypeValue},
/*file_size=*/100);
Add(/*level=*/1, /*file_number=*/2, /*smallest=*/
{PackUserKeyAndTimestamp("a", /*ts=*/5), /*s=*/0, kTypeValue},
/*largest=*/
{PackUserKeyAndTimestamp("b", /*ts=*/10), /*s=*/0, kTypeValue},
/*file_size=*/100);
Add(/*level=*/1, /*file_number=*/3, /*smallest=*/
{PackUserKeyAndTimestamp("c", /*ts=*/12), /*s=*/0, kTypeValue},
/*largest=*/
{PackUserKeyAndTimestamp("d", /*ts=*/1), /*s=*/0, kTypeValue},
/*file_size=*/100);
UpdateVersionStorageInfo();
ASSERT_EQ(
"1,2",
GetOverlappingFiles(
/*level=*/1,
{PackUserKeyAndTimestamp("a", /*ts=*/12), /*s=*/0, kTypeValue},
{PackUserKeyAndTimestamp("a", /*ts=*/11), /*s=*/0, kTypeValue}));
ASSERT_EQ("3",
GetOverlappingFiles(
/*level=*/1,
{PackUserKeyAndTimestamp("c", /*ts=*/15), /*s=*/0, kTypeValue},
{PackUserKeyAndTimestamp("c", /*ts=*/2), /*s=*/0, kTypeValue}));
}
class FindLevelFileTest : public testing::Test {
public:
LevelFilesBrief file_level_;
bool disjoint_sorted_files_;
Arena arena_;
FindLevelFileTest() : disjoint_sorted_files_(true) { }
~FindLevelFileTest() override {}
void LevelFileInit(size_t num = 0) {
char* mem = arena_.AllocateAligned(num * sizeof(FdWithKeyRange));
file_level_.files = new (mem)FdWithKeyRange[num];
file_level_.num_files = 0;
}
void Add(const char* smallest, const char* largest,
SequenceNumber smallest_seq = 100,
SequenceNumber largest_seq = 100) {
InternalKey smallest_key = InternalKey(smallest, smallest_seq, kTypeValue);
InternalKey largest_key = InternalKey(largest, largest_seq, kTypeValue);
Slice smallest_slice = smallest_key.Encode();
Slice largest_slice = largest_key.Encode();
char* mem = arena_.AllocateAligned(
smallest_slice.size() + largest_slice.size());
memcpy(mem, smallest_slice.data(), smallest_slice.size());
memcpy(mem + smallest_slice.size(), largest_slice.data(),
largest_slice.size());
// add to file_level_
size_t num = file_level_.num_files;
auto& file = file_level_.files[num];
file.fd = FileDescriptor(num + 1, 0, 0);
file.smallest_key = Slice(mem, smallest_slice.size());
file.largest_key = Slice(mem + smallest_slice.size(),
largest_slice.size());
file_level_.num_files++;
}
int Find(const char* key) {
InternalKey target(key, 100, kTypeValue);
InternalKeyComparator cmp(BytewiseComparator());
return FindFile(cmp, file_level_, target.Encode());
}
bool Overlaps(const char* smallest, const char* largest) {
InternalKeyComparator cmp(BytewiseComparator());
Slice s(smallest != nullptr ? smallest : "");
Slice l(largest != nullptr ? largest : "");
return SomeFileOverlapsRange(cmp, disjoint_sorted_files_, file_level_,
(smallest != nullptr ? &s : nullptr),
(largest != nullptr ? &l : nullptr));
}
};
TEST_F(FindLevelFileTest, LevelEmpty) {
LevelFileInit(0);
ASSERT_EQ(0, Find("foo"));
ASSERT_TRUE(! Overlaps("a", "z"));
ASSERT_TRUE(! Overlaps(nullptr, "z"));
ASSERT_TRUE(! Overlaps("a", nullptr));
ASSERT_TRUE(! Overlaps(nullptr, nullptr));
}
TEST_F(FindLevelFileTest, LevelSingle) {
LevelFileInit(1);
Add("p", "q");
ASSERT_EQ(0, Find("a"));
ASSERT_EQ(0, Find("p"));
ASSERT_EQ(0, Find("p1"));
ASSERT_EQ(0, Find("q"));
ASSERT_EQ(1, Find("q1"));
ASSERT_EQ(1, Find("z"));
ASSERT_TRUE(! Overlaps("a", "b"));
ASSERT_TRUE(! Overlaps("z1", "z2"));
ASSERT_TRUE(Overlaps("a", "p"));
ASSERT_TRUE(Overlaps("a", "q"));
ASSERT_TRUE(Overlaps("a", "z"));
ASSERT_TRUE(Overlaps("p", "p1"));
ASSERT_TRUE(Overlaps("p", "q"));
ASSERT_TRUE(Overlaps("p", "z"));
ASSERT_TRUE(Overlaps("p1", "p2"));
ASSERT_TRUE(Overlaps("p1", "z"));
ASSERT_TRUE(Overlaps("q", "q"));
ASSERT_TRUE(Overlaps("q", "q1"));
ASSERT_TRUE(! Overlaps(nullptr, "j"));
ASSERT_TRUE(! Overlaps("r", nullptr));
ASSERT_TRUE(Overlaps(nullptr, "p"));
ASSERT_TRUE(Overlaps(nullptr, "p1"));
ASSERT_TRUE(Overlaps("q", nullptr));
ASSERT_TRUE(Overlaps(nullptr, nullptr));
}
TEST_F(FindLevelFileTest, LevelMultiple) {
LevelFileInit(4);
Add("150", "200");
Add("200", "250");
Add("300", "350");
Add("400", "450");
ASSERT_EQ(0, Find("100"));
ASSERT_EQ(0, Find("150"));
ASSERT_EQ(0, Find("151"));
ASSERT_EQ(0, Find("199"));
ASSERT_EQ(0, Find("200"));
ASSERT_EQ(1, Find("201"));
ASSERT_EQ(1, Find("249"));
ASSERT_EQ(1, Find("250"));
ASSERT_EQ(2, Find("251"));
ASSERT_EQ(2, Find("299"));
ASSERT_EQ(2, Find("300"));
ASSERT_EQ(2, Find("349"));
ASSERT_EQ(2, Find("350"));
ASSERT_EQ(3, Find("351"));
ASSERT_EQ(3, Find("400"));
ASSERT_EQ(3, Find("450"));
ASSERT_EQ(4, Find("451"));
ASSERT_TRUE(! Overlaps("100", "149"));
ASSERT_TRUE(! Overlaps("251", "299"));
ASSERT_TRUE(! Overlaps("451", "500"));
ASSERT_TRUE(! Overlaps("351", "399"));
ASSERT_TRUE(Overlaps("100", "150"));
ASSERT_TRUE(Overlaps("100", "200"));
ASSERT_TRUE(Overlaps("100", "300"));
ASSERT_TRUE(Overlaps("100", "400"));
ASSERT_TRUE(Overlaps("100", "500"));
ASSERT_TRUE(Overlaps("375", "400"));
ASSERT_TRUE(Overlaps("450", "450"));
ASSERT_TRUE(Overlaps("450", "500"));
}
TEST_F(FindLevelFileTest, LevelMultipleNullBoundaries) {
LevelFileInit(4);
Add("150", "200");
Add("200", "250");
Add("300", "350");
Add("400", "450");
ASSERT_TRUE(! Overlaps(nullptr, "149"));
ASSERT_TRUE(! Overlaps("451", nullptr));
ASSERT_TRUE(Overlaps(nullptr, nullptr));
ASSERT_TRUE(Overlaps(nullptr, "150"));
ASSERT_TRUE(Overlaps(nullptr, "199"));
ASSERT_TRUE(Overlaps(nullptr, "200"));
ASSERT_TRUE(Overlaps(nullptr, "201"));
ASSERT_TRUE(Overlaps(nullptr, "400"));
ASSERT_TRUE(Overlaps(nullptr, "800"));
ASSERT_TRUE(Overlaps("100", nullptr));
ASSERT_TRUE(Overlaps("200", nullptr));
ASSERT_TRUE(Overlaps("449", nullptr));
ASSERT_TRUE(Overlaps("450", nullptr));
}
TEST_F(FindLevelFileTest, LevelOverlapSequenceChecks) {
LevelFileInit(1);
Add("200", "200", 5000, 3000);
ASSERT_TRUE(! Overlaps("199", "199"));
ASSERT_TRUE(! Overlaps("201", "300"));
ASSERT_TRUE(Overlaps("200", "200"));
ASSERT_TRUE(Overlaps("190", "200"));
ASSERT_TRUE(Overlaps("200", "210"));
}
TEST_F(FindLevelFileTest, LevelOverlappingFiles) {
LevelFileInit(2);
Add("150", "600");
Add("400", "500");
disjoint_sorted_files_ = false;
ASSERT_TRUE(! Overlaps("100", "149"));
ASSERT_TRUE(! Overlaps("601", "700"));
ASSERT_TRUE(Overlaps("100", "150"));
ASSERT_TRUE(Overlaps("100", "200"));
ASSERT_TRUE(Overlaps("100", "300"));
ASSERT_TRUE(Overlaps("100", "400"));
ASSERT_TRUE(Overlaps("100", "500"));
ASSERT_TRUE(Overlaps("375", "400"));
ASSERT_TRUE(Overlaps("450", "450"));
ASSERT_TRUE(Overlaps("450", "500"));
ASSERT_TRUE(Overlaps("450", "700"));
ASSERT_TRUE(Overlaps("600", "700"));
}
class VersionSetTestBase {
public:
const static std::string kColumnFamilyName1;
const static std::string kColumnFamilyName2;
const static std::string kColumnFamilyName3;
int num_initial_edits_;
explicit VersionSetTestBase(const std::string& name)
: env_(nullptr),
dbname_(test::PerThreadDBPath(name)),
options_(),
db_options_(options_),
cf_options_(options_),
immutable_options_(db_options_, cf_options_),
mutable_cf_options_(cf_options_),
table_cache_(NewLRUCache(50000, 16)),
write_buffer_manager_(db_options_.db_write_buffer_size),
shutting_down_(false),
mock_table_factory_(std::make_shared<mock::MockTableFactory>()) {
EXPECT_OK(test::CreateEnvFromSystem(ConfigOptions(), &env_, &env_guard_));
if (env_ == Env::Default() && getenv("MEM_ENV")) {
env_guard_.reset(NewMemEnv(Env::Default()));
env_ = env_guard_.get();
}
EXPECT_NE(nullptr, env_);
fs_ = env_->GetFileSystem();
EXPECT_OK(fs_->CreateDirIfMissing(dbname_, IOOptions(), nullptr));
options_.env = env_;
db_options_.env = env_;
db_options_.fs = fs_;
immutable_options_.env = env_;
immutable_options_.fs = fs_;
immutable_options_.clock = env_->GetSystemClock().get();
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_session_id*/ ""));
reactive_versions_ = std::make_shared<ReactiveVersionSet>(
dbname_, &db_options_, env_options_, table_cache_.get(),
&write_buffer_manager_, &write_controller_, nullptr);
db_options_.db_paths.emplace_back(dbname_,
std::numeric_limits<uint64_t>::max());
}
virtual ~VersionSetTestBase() {
if (getenv("KEEP_DB")) {
fprintf(stdout, "DB is still at %s\n", dbname_.c_str());
} else {
Options options;
options.env = env_;
EXPECT_OK(DestroyDB(dbname_, options));
}
}
protected:
virtual void PrepareManifest(
std::vector<ColumnFamilyDescriptor>* column_families,
SequenceNumber* last_seqno, std::unique_ptr<log::Writer>* log_writer) {
assert(column_families != nullptr);
assert(last_seqno != nullptr);
assert(log_writer != nullptr);
VersionEdit new_db;
if (db_options_.write_dbid_to_manifest) {
DBOptions tmp_db_options;
tmp_db_options.env = env_;
std::unique_ptr<DBImpl> impl(new DBImpl(tmp_db_options, dbname_));
std::string db_id;
impl->GetDbIdentityFromIdentityFile(&db_id);
new_db.SetDBId(db_id);
}
new_db.SetLogNumber(0);
new_db.SetNextFile(2);
new_db.SetLastSequence(0);
const std::vector<std::string> cf_names = {
kDefaultColumnFamilyName, kColumnFamilyName1, kColumnFamilyName2,
kColumnFamilyName3};
const int kInitialNumOfCfs = static_cast<int>(cf_names.size());
autovector<VersionEdit> new_cfs;
uint64_t last_seq = 1;
uint32_t cf_id = 1;
for (int i = 1; i != kInitialNumOfCfs; ++i) {
VersionEdit new_cf;
new_cf.AddColumnFamily(cf_names[i]);
new_cf.SetColumnFamily(cf_id++);
new_cf.SetLogNumber(0);
new_cf.SetNextFile(2);
new_cf.SetLastSequence(last_seq++);
new_cfs.emplace_back(new_cf);
}
*last_seqno = last_seq;
num_initial_edits_ = static_cast<int>(new_cfs.size() + 1);
std::unique_ptr<WritableFileWriter> file_writer;
const std::string manifest = DescriptorFileName(dbname_, 1);
const auto& fs = env_->GetFileSystem();
Status s = WritableFileWriter::Create(
fs, manifest, fs->OptimizeForManifestWrite(env_options_), &file_writer,
nullptr);
ASSERT_OK(s);
{
log_writer->reset(new log::Writer(std::move(file_writer), 0, false));
std::string record;
new_db.EncodeTo(&record);
s = (*log_writer)->AddRecord(record);
for (const auto& e : new_cfs) {
record.clear();
e.EncodeTo(&record);
s = (*log_writer)->AddRecord(record);
ASSERT_OK(s);
}
}
ASSERT_OK(s);
cf_options_.table_factory = mock_table_factory_;
for (const auto& cf_name : cf_names) {
column_families->emplace_back(cf_name, cf_options_);
}
}
// Create DB with 3 column families.
void NewDB() {
SequenceNumber last_seqno;
std::unique_ptr<log::Writer> log_writer;
SetIdentityFile(env_, dbname_);
PrepareManifest(&column_families_, &last_seqno, &log_writer);
log_writer.reset();
// Make "CURRENT" file point to the new manifest file.
Status s = SetCurrentFile(fs_.get(), dbname_, 1, nullptr);
ASSERT_OK(s);
EXPECT_OK(versions_->Recover(column_families_, false));
EXPECT_EQ(column_families_.size(),
versions_->GetColumnFamilySet()->NumberOfColumnFamilies());
}
void ReopenDB() {
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_session_id*/ ""));
EXPECT_OK(versions_->Recover(column_families_, false));
}
void VerifyManifest(std::string* manifest_path) const {
assert(manifest_path != nullptr);
uint64_t manifest_file_number = 0;
Status s = versions_->GetCurrentManifestPath(
dbname_, fs_.get(), manifest_path, &manifest_file_number);
ASSERT_OK(s);
ASSERT_EQ(1, manifest_file_number);
}
Status LogAndApplyToDefaultCF(VersionEdit& edit) {
mutex_.Lock();
Status s =
versions_->LogAndApply(versions_->GetColumnFamilySet()->GetDefault(),
mutable_cf_options_, &edit, &mutex_);
mutex_.Unlock();
return s;
}
Status LogAndApplyToDefaultCF(
const autovector<std::unique_ptr<VersionEdit>>& edits) {
autovector<VersionEdit*> vedits;
for (auto& e : edits) {
vedits.push_back(e.get());
}
mutex_.Lock();
Status s =
versions_->LogAndApply(versions_->GetColumnFamilySet()->GetDefault(),
mutable_cf_options_, vedits, &mutex_);
mutex_.Unlock();
return s;
}
void CreateNewManifest() {
constexpr FSDirectory* db_directory = nullptr;
constexpr bool new_descriptor_log = true;
mutex_.Lock();
VersionEdit dummy;
ASSERT_OK(versions_->LogAndApply(
versions_->GetColumnFamilySet()->GetDefault(), mutable_cf_options_,
&dummy, &mutex_, db_directory, new_descriptor_log));
mutex_.Unlock();
}
ColumnFamilyData* CreateColumnFamily(const std::string& cf_name,
const ColumnFamilyOptions& cf_options) {
VersionEdit new_cf;
new_cf.AddColumnFamily(cf_name);
uint32_t new_id = versions_->GetColumnFamilySet()->GetNextColumnFamilyID();
new_cf.SetColumnFamily(new_id);
new_cf.SetLogNumber(0);
new_cf.SetComparatorName(cf_options.comparator->Name());
Status s;
mutex_.Lock();
s = versions_->LogAndApply(/*column_family_data=*/nullptr,
MutableCFOptions(cf_options), &new_cf, &mutex_,
/*db_directory=*/nullptr,
/*new_descriptor_log=*/false, &cf_options);
mutex_.Unlock();
EXPECT_OK(s);
ColumnFamilyData* cfd =
versions_->GetColumnFamilySet()->GetColumnFamily(cf_name);
EXPECT_NE(nullptr, cfd);
return cfd;
}
Env* mem_env_;
Env* env_;
std::shared_ptr<Env> env_guard_;
std::shared_ptr<FileSystem> fs_;
const std::string dbname_;
EnvOptions env_options_;
Options options_;
ImmutableDBOptions db_options_;
ColumnFamilyOptions cf_options_;
ImmutableOptions immutable_options_;
MutableCFOptions mutable_cf_options_;
std::shared_ptr<Cache> table_cache_;
WriteController write_controller_;
WriteBufferManager write_buffer_manager_;
std::shared_ptr<VersionSet> versions_;
std::shared_ptr<ReactiveVersionSet> reactive_versions_;
InstrumentedMutex mutex_;
std::atomic<bool> shutting_down_;
std::shared_ptr<mock::MockTableFactory> mock_table_factory_;
std::vector<ColumnFamilyDescriptor> column_families_;
};
const std::string VersionSetTestBase::kColumnFamilyName1 = "alice";
const std::string VersionSetTestBase::kColumnFamilyName2 = "bob";
const std::string VersionSetTestBase::kColumnFamilyName3 = "charles";
class VersionSetTest : public VersionSetTestBase, public testing::Test {
public:
VersionSetTest() : VersionSetTestBase("version_set_test") {}
};
TEST_F(VersionSetTest, SameColumnFamilyGroupCommit) {
NewDB();
const int kGroupSize = 5;
autovector<VersionEdit> edits;
for (int i = 0; i != kGroupSize; ++i) {
edits.emplace_back(VersionEdit());
}
autovector<ColumnFamilyData*> cfds;
autovector<const MutableCFOptions*> all_mutable_cf_options;
autovector<autovector<VersionEdit*>> edit_lists;
for (int i = 0; i != kGroupSize; ++i) {
cfds.emplace_back(versions_->GetColumnFamilySet()->GetDefault());
all_mutable_cf_options.emplace_back(&mutable_cf_options_);
autovector<VersionEdit*> edit_list;
edit_list.emplace_back(&edits[i]);
edit_lists.emplace_back(edit_list);
}
SyncPoint::GetInstance()->DisableProcessing();
SyncPoint::GetInstance()->ClearAllCallBacks();
int count = 0;
SyncPoint::GetInstance()->SetCallBack(
"VersionSet::ProcessManifestWrites:SameColumnFamily", [&](void* arg) {
uint32_t* cf_id = reinterpret_cast<uint32_t*>(arg);
EXPECT_EQ(0u, *cf_id);
++count;
});
SyncPoint::GetInstance()->EnableProcessing();
mutex_.Lock();
Status s =
versions_->LogAndApply(cfds, all_mutable_cf_options, edit_lists, &mutex_);
mutex_.Unlock();
EXPECT_OK(s);
EXPECT_EQ(kGroupSize - 1, count);
}
TEST_F(VersionSetTest, PersistBlobFileStateInNewManifest) {
// Initialize the database and add a couple of blob files, one with some
// garbage in it, and one without any garbage.
NewDB();
assert(versions_);
assert(versions_->GetColumnFamilySet());
ColumnFamilyData* const cfd = versions_->GetColumnFamilySet()->GetDefault();
assert(cfd);
Version* const version = cfd->current();
assert(version);
VersionStorageInfo* const storage_info = version->storage_info();
assert(storage_info);
{
constexpr uint64_t blob_file_number = 123;
constexpr uint64_t total_blob_count = 456;
constexpr uint64_t total_blob_bytes = 77777777;
constexpr char checksum_method[] = "SHA1";
constexpr char checksum_value[] =
"\xbd\xb7\xf3\x4a\x59\xdf\xa1\x59\x2c\xe7\xf5\x2e\x99\xf9\x8c\x57\x0c"
"\x52\x5c\xbd";
auto shared_meta = SharedBlobFileMetaData::Create(
blob_file_number, total_blob_count, total_blob_bytes, checksum_method,
checksum_value);
constexpr uint64_t garbage_blob_count = 89;
constexpr uint64_t garbage_blob_bytes = 1000000;
auto meta = BlobFileMetaData::Create(
std::move(shared_meta), BlobFileMetaData::LinkedSsts(),
garbage_blob_count, garbage_blob_bytes);
storage_info->AddBlobFile(std::move(meta));
}
{
constexpr uint64_t blob_file_number = 234;
constexpr uint64_t total_blob_count = 555;
constexpr uint64_t total_blob_bytes = 66666;
constexpr char checksum_method[] = "CRC32";
constexpr char checksum_value[] = "\x3d\x87\xff\x57";
auto shared_meta = SharedBlobFileMetaData::Create(
blob_file_number, total_blob_count, total_blob_bytes, checksum_method,
checksum_value);
constexpr uint64_t garbage_blob_count = 0;
constexpr uint64_t garbage_blob_bytes = 0;
auto meta = BlobFileMetaData::Create(
std::move(shared_meta), BlobFileMetaData::LinkedSsts(),
garbage_blob_count, garbage_blob_bytes);
storage_info->AddBlobFile(std::move(meta));
}
// Force the creation of a new manifest file and make sure metadata for
// the blob files is re-persisted.
size_t addition_encoded = 0;
SyncPoint::GetInstance()->SetCallBack(
"BlobFileAddition::EncodeTo::CustomFields",
[&](void* /* arg */) { ++addition_encoded; });
size_t garbage_encoded = 0;
SyncPoint::GetInstance()->SetCallBack(
"BlobFileGarbage::EncodeTo::CustomFields",
[&](void* /* arg */) { ++garbage_encoded; });
SyncPoint::GetInstance()->EnableProcessing();
CreateNewManifest();
ASSERT_EQ(addition_encoded, 2);
ASSERT_EQ(garbage_encoded, 1);
SyncPoint::GetInstance()->DisableProcessing();
SyncPoint::GetInstance()->ClearAllCallBacks();
}
TEST_F(VersionSetTest, AddLiveBlobFiles) {
// Initialize the database and add a blob file.
NewDB();
assert(versions_);
assert(versions_->GetColumnFamilySet());
ColumnFamilyData* const cfd = versions_->GetColumnFamilySet()->GetDefault();
assert(cfd);
Version* const first_version = cfd->current();
assert(first_version);
VersionStorageInfo* const first_storage_info = first_version->storage_info();
assert(first_storage_info);
constexpr uint64_t first_blob_file_number = 234;
constexpr uint64_t first_total_blob_count = 555;
constexpr uint64_t first_total_blob_bytes = 66666;
constexpr char first_checksum_method[] = "CRC32";
constexpr char first_checksum_value[] = "\x3d\x87\xff\x57";
auto first_shared_meta = SharedBlobFileMetaData::Create(
first_blob_file_number, first_total_blob_count, first_total_blob_bytes,
first_checksum_method, first_checksum_value);
constexpr uint64_t garbage_blob_count = 0;
constexpr uint64_t garbage_blob_bytes = 0;
auto first_meta = BlobFileMetaData::Create(
std::move(first_shared_meta), BlobFileMetaData::LinkedSsts(),
garbage_blob_count, garbage_blob_bytes);
first_storage_info->AddBlobFile(first_meta);
// Reference the version so it stays alive even after the following version
// edit.
first_version->Ref();
// Get live files directly from version.
std::vector<uint64_t> version_table_files;
std::vector<uint64_t> version_blob_files;
first_version->AddLiveFiles(&version_table_files, &version_blob_files);
ASSERT_EQ(version_blob_files.size(), 1);
ASSERT_EQ(version_blob_files[0], first_blob_file_number);
// Create a new version containing an additional blob file.
versions_->TEST_CreateAndAppendVersion(cfd);
Version* const second_version = cfd->current();
assert(second_version);
assert(second_version != first_version);
VersionStorageInfo* const second_storage_info =
second_version->storage_info();
assert(second_storage_info);
constexpr uint64_t second_blob_file_number = 456;
constexpr uint64_t second_total_blob_count = 100;
constexpr uint64_t second_total_blob_bytes = 2000000;
constexpr char second_checksum_method[] = "CRC32B";
constexpr char second_checksum_value[] = "\x6d\xbd\xf2\x3a";
auto second_shared_meta = SharedBlobFileMetaData::Create(
second_blob_file_number, second_total_blob_count, second_total_blob_bytes,
second_checksum_method, second_checksum_value);
auto second_meta = BlobFileMetaData::Create(
std::move(second_shared_meta), BlobFileMetaData::LinkedSsts(),
garbage_blob_count, garbage_blob_bytes);
second_storage_info->AddBlobFile(std::move(first_meta));
second_storage_info->AddBlobFile(std::move(second_meta));
// Get all live files from version set. Note that the result contains
// duplicates.
std::vector<uint64_t> all_table_files;
std::vector<uint64_t> all_blob_files;
versions_->AddLiveFiles(&all_table_files, &all_blob_files);
ASSERT_EQ(all_blob_files.size(), 3);
ASSERT_EQ(all_blob_files[0], first_blob_file_number);
ASSERT_EQ(all_blob_files[1], first_blob_file_number);
ASSERT_EQ(all_blob_files[2], second_blob_file_number);
// Clean up previous version.
first_version->Unref();
}
TEST_F(VersionSetTest, ObsoleteBlobFile) {
// Initialize the database and add a blob file that is entirely garbage
// and thus can immediately be marked obsolete.
NewDB();
VersionEdit edit;
constexpr uint64_t blob_file_number = 234;
constexpr uint64_t total_blob_count = 555;
constexpr uint64_t total_blob_bytes = 66666;
constexpr char checksum_method[] = "CRC32";
constexpr char checksum_value[] = "\x3d\x87\xff\x57";
edit.AddBlobFile(blob_file_number, total_blob_count, total_blob_bytes,
checksum_method, checksum_value);
edit.AddBlobFileGarbage(blob_file_number, total_blob_count, total_blob_bytes);
mutex_.Lock();
Status s =
versions_->LogAndApply(versions_->GetColumnFamilySet()->GetDefault(),
mutable_cf_options_, &edit, &mutex_);
mutex_.Unlock();
ASSERT_OK(s);
// Make sure blob files from the pending number range are not returned
// as obsolete.
{
std::vector<ObsoleteFileInfo> table_files;
std::vector<ObsoleteBlobFileInfo> blob_files;
std::vector<std::string> manifest_files;
constexpr uint64_t min_pending_output = blob_file_number;
versions_->GetObsoleteFiles(&table_files, &blob_files, &manifest_files,
min_pending_output);
ASSERT_TRUE(blob_files.empty());
}
// Make sure the blob file is returned as obsolete if it's not in the pending
// range.
{
std::vector<ObsoleteFileInfo> table_files;
std::vector<ObsoleteBlobFileInfo> blob_files;
std::vector<std::string> manifest_files;
constexpr uint64_t min_pending_output = blob_file_number + 1;
versions_->GetObsoleteFiles(&table_files, &blob_files, &manifest_files,
min_pending_output);
ASSERT_EQ(blob_files.size(), 1);
ASSERT_EQ(blob_files[0].GetBlobFileNumber(), blob_file_number);
}
// Make sure it's not returned a second time.
{
std::vector<ObsoleteFileInfo> table_files;
std::vector<ObsoleteBlobFileInfo> blob_files;
std::vector<std::string> manifest_files;
constexpr uint64_t min_pending_output = blob_file_number + 1;
versions_->GetObsoleteFiles(&table_files, &blob_files, &manifest_files,
min_pending_output);
ASSERT_TRUE(blob_files.empty());
}
}
TEST_F(VersionSetTest, WalEditsNotAppliedToVersion) {
NewDB();
constexpr uint64_t kNumWals = 5;
autovector<std::unique_ptr<VersionEdit>> edits;
// Add some WALs.
for (uint64_t i = 1; i <= kNumWals; i++) {
edits.emplace_back(new VersionEdit);
// WAL's size equals its log number.
edits.back()->AddWal(i, WalMetadata(i));
}
// Delete the first half of the WALs.
edits.emplace_back(new VersionEdit);
edits.back()->DeleteWalsBefore(kNumWals / 2 + 1);
autovector<Version*> versions;
SyncPoint::GetInstance()->SetCallBack(
"VersionSet::ProcessManifestWrites:NewVersion",
[&](void* arg) { versions.push_back(reinterpret_cast<Version*>(arg)); });
SyncPoint::GetInstance()->EnableProcessing();
ASSERT_OK(LogAndApplyToDefaultCF(edits));
SyncPoint::GetInstance()->DisableProcessing();
SyncPoint::GetInstance()->ClearAllCallBacks();
// Since the edits are all WAL edits, no version should be created.
ASSERT_EQ(versions.size(), 1);
ASSERT_EQ(versions[0], nullptr);
}
// Similar to WalEditsNotAppliedToVersion, but contains a non-WAL edit.
TEST_F(VersionSetTest, NonWalEditsAppliedToVersion) {
NewDB();
const std::string kDBId = "db_db";
constexpr uint64_t kNumWals = 5;
autovector<std::unique_ptr<VersionEdit>> edits;
// Add some WALs.
for (uint64_t i = 1; i <= kNumWals; i++) {
edits.emplace_back(new VersionEdit);
// WAL's size equals its log number.
edits.back()->AddWal(i, WalMetadata(i));
}
// Delete the first half of the WALs.
edits.emplace_back(new VersionEdit);
edits.back()->DeleteWalsBefore(kNumWals / 2 + 1);
edits.emplace_back(new VersionEdit);
edits.back()->SetDBId(kDBId);
autovector<Version*> versions;
SyncPoint::GetInstance()->SetCallBack(
"VersionSet::ProcessManifestWrites:NewVersion",
[&](void* arg) { versions.push_back(reinterpret_cast<Version*>(arg)); });
SyncPoint::GetInstance()->EnableProcessing();
ASSERT_OK(LogAndApplyToDefaultCF(edits));
SyncPoint::GetInstance()->DisableProcessing();
SyncPoint::GetInstance()->ClearAllCallBacks();
// Since the edits are all WAL edits, no version should be created.
ASSERT_EQ(versions.size(), 1);
ASSERT_NE(versions[0], nullptr);
}
TEST_F(VersionSetTest, WalAddition) {
NewDB();
constexpr WalNumber kLogNumber = 10;
constexpr uint64_t kSizeInBytes = 111;
// A WAL is just created.
{
VersionEdit edit;
edit.AddWal(kLogNumber);
ASSERT_OK(LogAndApplyToDefaultCF(edit));
const auto& wals = versions_->GetWalSet().GetWals();
ASSERT_EQ(wals.size(), 1);
ASSERT_TRUE(wals.find(kLogNumber) != wals.end());
ASSERT_FALSE(wals.at(kLogNumber).HasSyncedSize());
}
// The WAL is synced for several times before closing.
{
for (uint64_t size_delta = 100; size_delta > 0; size_delta /= 2) {
uint64_t size = kSizeInBytes - size_delta;
WalMetadata wal(size);
VersionEdit edit;
edit.AddWal(kLogNumber, wal);
ASSERT_OK(LogAndApplyToDefaultCF(edit));
const auto& wals = versions_->GetWalSet().GetWals();
ASSERT_EQ(wals.size(), 1);
ASSERT_TRUE(wals.find(kLogNumber) != wals.end());
ASSERT_TRUE(wals.at(kLogNumber).HasSyncedSize());
ASSERT_EQ(wals.at(kLogNumber).GetSyncedSizeInBytes(), size);
}
}
// The WAL is closed.
{
WalMetadata wal(kSizeInBytes);
VersionEdit edit;
edit.AddWal(kLogNumber, wal);
ASSERT_OK(LogAndApplyToDefaultCF(edit));
const auto& wals = versions_->GetWalSet().GetWals();
ASSERT_EQ(wals.size(), 1);
ASSERT_TRUE(wals.find(kLogNumber) != wals.end());
ASSERT_TRUE(wals.at(kLogNumber).HasSyncedSize());
ASSERT_EQ(wals.at(kLogNumber).GetSyncedSizeInBytes(), kSizeInBytes);
}
// Recover a new VersionSet.
{
std::unique_ptr<VersionSet> new_versions(
new VersionSet(dbname_, &db_options_, env_options_, table_cache_.get(),
&write_buffer_manager_, &write_controller_,
/*block_cache_tracer=*/nullptr, /*io_tracer=*/nullptr,
/*db_session_id*/ ""));
ASSERT_OK(new_versions->Recover(column_families_, /*read_only=*/false));
const auto& wals = new_versions->GetWalSet().GetWals();
ASSERT_EQ(wals.size(), 1);
ASSERT_TRUE(wals.find(kLogNumber) != wals.end());
ASSERT_TRUE(wals.at(kLogNumber).HasSyncedSize());
ASSERT_EQ(wals.at(kLogNumber).GetSyncedSizeInBytes(), kSizeInBytes);
}
}
TEST_F(VersionSetTest, WalCloseWithoutSync) {
NewDB();
constexpr WalNumber kLogNumber = 10;
constexpr uint64_t kSizeInBytes = 111;
constexpr uint64_t kSyncedSizeInBytes = kSizeInBytes / 2;
// A WAL is just created.
{
VersionEdit edit;
edit.AddWal(kLogNumber);
ASSERT_OK(LogAndApplyToDefaultCF(edit));
const auto& wals = versions_->GetWalSet().GetWals();
ASSERT_EQ(wals.size(), 1);
ASSERT_TRUE(wals.find(kLogNumber) != wals.end());
ASSERT_FALSE(wals.at(kLogNumber).HasSyncedSize());
}
// The WAL is synced before closing.
{
WalMetadata wal(kSyncedSizeInBytes);
VersionEdit edit;
edit.AddWal(kLogNumber, wal);
ASSERT_OK(LogAndApplyToDefaultCF(edit));
const auto& wals = versions_->GetWalSet().GetWals();
ASSERT_EQ(wals.size(), 1);
ASSERT_TRUE(wals.find(kLogNumber) != wals.end());
ASSERT_TRUE(wals.at(kLogNumber).HasSyncedSize());
ASSERT_EQ(wals.at(kLogNumber).GetSyncedSizeInBytes(), kSyncedSizeInBytes);
}
// A new WAL with larger log number is created,
// implicitly marking the current WAL closed.
{
VersionEdit edit;
edit.AddWal(kLogNumber + 1);
ASSERT_OK(LogAndApplyToDefaultCF(edit));
const auto& wals = versions_->GetWalSet().GetWals();
ASSERT_EQ(wals.size(), 2);
ASSERT_TRUE(wals.find(kLogNumber) != wals.end());
ASSERT_TRUE(wals.at(kLogNumber).HasSyncedSize());
ASSERT_EQ(wals.at(kLogNumber).GetSyncedSizeInBytes(), kSyncedSizeInBytes);
ASSERT_TRUE(wals.find(kLogNumber + 1) != wals.end());
ASSERT_FALSE(wals.at(kLogNumber + 1).HasSyncedSize());
}
// Recover a new VersionSet.
{
std::unique_ptr<VersionSet> new_versions(
new VersionSet(dbname_, &db_options_, env_options_, table_cache_.get(),
&write_buffer_manager_, &write_controller_,
/*block_cache_tracer=*/nullptr, /*io_tracer=*/nullptr,
/*db_session_id*/ ""));
ASSERT_OK(new_versions->Recover(column_families_, false));
const auto& wals = new_versions->GetWalSet().GetWals();
ASSERT_EQ(wals.size(), 2);
ASSERT_TRUE(wals.find(kLogNumber) != wals.end());
ASSERT_TRUE(wals.at(kLogNumber).HasSyncedSize());
ASSERT_EQ(wals.at(kLogNumber).GetSyncedSizeInBytes(), kSyncedSizeInBytes);
}
}
TEST_F(VersionSetTest, WalDeletion) {
NewDB();
constexpr WalNumber kClosedLogNumber = 10;
constexpr WalNumber kNonClosedLogNumber = 20;
constexpr uint64_t kSizeInBytes = 111;
// Add a non-closed and a closed WAL.
{
VersionEdit edit;
edit.AddWal(kClosedLogNumber, WalMetadata(kSizeInBytes));
edit.AddWal(kNonClosedLogNumber);
ASSERT_OK(LogAndApplyToDefaultCF(edit));
const auto& wals = versions_->GetWalSet().GetWals();
ASSERT_EQ(wals.size(), 2);
ASSERT_TRUE(wals.find(kNonClosedLogNumber) != wals.end());
ASSERT_TRUE(wals.find(kClosedLogNumber) != wals.end());
ASSERT_FALSE(wals.at(kNonClosedLogNumber).HasSyncedSize());
ASSERT_TRUE(wals.at(kClosedLogNumber).HasSyncedSize());
ASSERT_EQ(wals.at(kClosedLogNumber).GetSyncedSizeInBytes(), kSizeInBytes);
}
// Delete the closed WAL.
{
VersionEdit edit;
edit.DeleteWalsBefore(kNonClosedLogNumber);
ASSERT_OK(LogAndApplyToDefaultCF(edit));
const auto& wals = versions_->GetWalSet().GetWals();
ASSERT_EQ(wals.size(), 1);
ASSERT_TRUE(wals.find(kNonClosedLogNumber) != wals.end());
ASSERT_FALSE(wals.at(kNonClosedLogNumber).HasSyncedSize());
}
// Recover a new VersionSet, only the non-closed WAL should show up.
{
std::unique_ptr<VersionSet> new_versions(
new VersionSet(dbname_, &db_options_, env_options_, table_cache_.get(),
&write_buffer_manager_, &write_controller_,
/*block_cache_tracer=*/nullptr, /*io_tracer=*/nullptr,
/*db_session_id*/ ""));
ASSERT_OK(new_versions->Recover(column_families_, false));
const auto& wals = new_versions->GetWalSet().GetWals();
ASSERT_EQ(wals.size(), 1);
ASSERT_TRUE(wals.find(kNonClosedLogNumber) != wals.end());
ASSERT_FALSE(wals.at(kNonClosedLogNumber).HasSyncedSize());
}
// Force the creation of a new MANIFEST file,
// only the non-closed WAL should be written to the new MANIFEST.
{
std::vector<WalAddition> wal_additions;
SyncPoint::GetInstance()->SetCallBack(
"VersionSet::WriteCurrentStateToManifest:SaveWal", [&](void* arg) {
VersionEdit* edit = reinterpret_cast<VersionEdit*>(arg);
ASSERT_TRUE(edit->IsWalAddition());
for (auto& addition : edit->GetWalAdditions()) {
wal_additions.push_back(addition);
}
});
SyncPoint::GetInstance()->EnableProcessing();
CreateNewManifest();
SyncPoint::GetInstance()->DisableProcessing();
SyncPoint::GetInstance()->ClearAllCallBacks();
ASSERT_EQ(wal_additions.size(), 1);
ASSERT_EQ(wal_additions[0].GetLogNumber(), kNonClosedLogNumber);
ASSERT_FALSE(wal_additions[0].GetMetadata().HasSyncedSize());
}
// Recover from the new MANIFEST, only the non-closed WAL should show up.
{
std::unique_ptr<VersionSet> new_versions(
new VersionSet(dbname_, &db_options_, env_options_, table_cache_.get(),
&write_buffer_manager_, &write_controller_,
/*block_cache_tracer=*/nullptr, /*io_tracer=*/nullptr,
/*db_session_id*/ ""));
ASSERT_OK(new_versions->Recover(column_families_, false));
const auto& wals = new_versions->GetWalSet().GetWals();
ASSERT_EQ(wals.size(), 1);
ASSERT_TRUE(wals.find(kNonClosedLogNumber) != wals.end());
ASSERT_FALSE(wals.at(kNonClosedLogNumber).HasSyncedSize());
}
}
TEST_F(VersionSetTest, WalCreateTwice) {
NewDB();
constexpr WalNumber kLogNumber = 10;
VersionEdit edit;
edit.AddWal(kLogNumber);
ASSERT_OK(LogAndApplyToDefaultCF(edit));
Status s = LogAndApplyToDefaultCF(edit);
ASSERT_TRUE(s.IsCorruption());
ASSERT_TRUE(s.ToString().find("WAL 10 is created more than once") !=
std::string::npos)
<< s.ToString();
}
TEST_F(VersionSetTest, WalCreateAfterClose) {
NewDB();
constexpr WalNumber kLogNumber = 10;
constexpr uint64_t kSizeInBytes = 111;
{
// Add a closed WAL.
VersionEdit edit;
edit.AddWal(kLogNumber);
WalMetadata wal(kSizeInBytes);
edit.AddWal(kLogNumber, wal);
ASSERT_OK(LogAndApplyToDefaultCF(edit));
}
{
// Create the same WAL again.
VersionEdit edit;
edit.AddWal(kLogNumber);
Status s = LogAndApplyToDefaultCF(edit);
ASSERT_TRUE(s.IsCorruption());
ASSERT_TRUE(s.ToString().find("WAL 10 is created more than once") !=
std::string::npos)
<< s.ToString();
}
}
TEST_F(VersionSetTest, AddWalWithSmallerSize) {
NewDB();
constexpr WalNumber kLogNumber = 10;
constexpr uint64_t kSizeInBytes = 111;
{
// Add a closed WAL.
VersionEdit edit;
WalMetadata wal(kSizeInBytes);
edit.AddWal(kLogNumber, wal);
ASSERT_OK(LogAndApplyToDefaultCF(edit));
}
{
// Add the same WAL with smaller synced size.
VersionEdit edit;
WalMetadata wal(kSizeInBytes / 2);
edit.AddWal(kLogNumber, wal);
Status s = LogAndApplyToDefaultCF(edit);
ASSERT_TRUE(s.IsCorruption());
ASSERT_TRUE(
s.ToString().find(
"WAL 10 must not have smaller synced size than previous one") !=
std::string::npos)
<< s.ToString();
}
}
TEST_F(VersionSetTest, DeleteWalsBeforeNonExistingWalNumber) {
NewDB();
constexpr WalNumber kLogNumber0 = 10;
constexpr WalNumber kLogNumber1 = 20;
constexpr WalNumber kNonExistingNumber = 15;
constexpr uint64_t kSizeInBytes = 111;
{
// Add closed WALs.
VersionEdit edit;
WalMetadata wal(kSizeInBytes);
edit.AddWal(kLogNumber0, wal);
edit.AddWal(kLogNumber1, wal);
ASSERT_OK(LogAndApplyToDefaultCF(edit));
}
{
// Delete WALs before a non-existing WAL.
VersionEdit edit;
edit.DeleteWalsBefore(kNonExistingNumber);
ASSERT_OK(LogAndApplyToDefaultCF(edit));
}
// Recover a new VersionSet, WAL0 is deleted, WAL1 is not.
{
std::unique_ptr<VersionSet> new_versions(
new VersionSet(dbname_, &db_options_, env_options_, table_cache_.get(),
&write_buffer_manager_, &write_controller_,
/*block_cache_tracer=*/nullptr, /*io_tracer=*/nullptr,
/*db_session_id*/ ""));
ASSERT_OK(new_versions->Recover(column_families_, false));
const auto& wals = new_versions->GetWalSet().GetWals();
ASSERT_EQ(wals.size(), 1);
ASSERT_TRUE(wals.find(kLogNumber1) != wals.end());
}
}
TEST_F(VersionSetTest, DeleteAllWals) {
NewDB();
constexpr WalNumber kMaxLogNumber = 10;
constexpr uint64_t kSizeInBytes = 111;
{
// Add a closed WAL.
VersionEdit edit;
WalMetadata wal(kSizeInBytes);
edit.AddWal(kMaxLogNumber, wal);
ASSERT_OK(LogAndApplyToDefaultCF(edit));
}
{
VersionEdit edit;
edit.DeleteWalsBefore(kMaxLogNumber + 10);
ASSERT_OK(LogAndApplyToDefaultCF(edit));
}
// Recover a new VersionSet, all WALs are deleted.
{
std::unique_ptr<VersionSet> new_versions(
new VersionSet(dbname_, &db_options_, env_options_, table_cache_.get(),
&write_buffer_manager_, &write_controller_,
/*block_cache_tracer=*/nullptr, /*io_tracer=*/nullptr,
/*db_session_id*/ ""));
ASSERT_OK(new_versions->Recover(column_families_, false));
const auto& wals = new_versions->GetWalSet().GetWals();
ASSERT_EQ(wals.size(), 0);
}
}
TEST_F(VersionSetTest, AtomicGroupWithWalEdits) {
NewDB();
constexpr int kAtomicGroupSize = 7;
constexpr uint64_t kNumWals = 5;
const std::string kDBId = "db_db";
int remaining = kAtomicGroupSize;
autovector<std::unique_ptr<VersionEdit>> edits;
// Add 5 WALs.
for (uint64_t i = 1; i <= kNumWals; i++) {
edits.emplace_back(new VersionEdit);
// WAL's size equals its log number.
edits.back()->AddWal(i, WalMetadata(i));
edits.back()->MarkAtomicGroup(--remaining);
}
// One edit with the min log number set.
edits.emplace_back(new VersionEdit);
edits.back()->SetDBId(kDBId);
edits.back()->MarkAtomicGroup(--remaining);
// Delete the first added 4 WALs.
edits.emplace_back(new VersionEdit);
edits.back()->DeleteWalsBefore(kNumWals);
edits.back()->MarkAtomicGroup(--remaining);
ASSERT_EQ(remaining, 0);
ASSERT_OK(LogAndApplyToDefaultCF(edits));
// Recover a new VersionSet, the min log number and the last WAL should be
// kept.
{
std::unique_ptr<VersionSet> new_versions(
new VersionSet(dbname_, &db_options_, env_options_, table_cache_.get(),
&write_buffer_manager_, &write_controller_,
/*block_cache_tracer=*/nullptr, /*io_tracer=*/nullptr,
/*db_session_id*/ ""));
std::string db_id;
ASSERT_OK(
new_versions->Recover(column_families_, /*read_only=*/false, &db_id));
ASSERT_EQ(db_id, kDBId);
const auto& wals = new_versions->GetWalSet().GetWals();
ASSERT_EQ(wals.size(), 1);
ASSERT_TRUE(wals.find(kNumWals) != wals.end());
ASSERT_TRUE(wals.at(kNumWals).HasSyncedSize());
ASSERT_EQ(wals.at(kNumWals).GetSyncedSizeInBytes(), kNumWals);
}
}
class VersionSetWithTimestampTest : public VersionSetTest {
public:
static const std::string kNewCfName;
explicit VersionSetWithTimestampTest() : VersionSetTest() {}
void SetUp() override {
NewDB();
Options options;
options.comparator = test::BytewiseComparatorWithU64TsWrapper();
cfd_ = CreateColumnFamily(kNewCfName, options);
EXPECT_NE(nullptr, cfd_);
EXPECT_NE(nullptr, cfd_->GetLatestMutableCFOptions());
column_families_.emplace_back(kNewCfName, options);
}
void TearDown() override {
for (auto* e : edits_) {
delete e;
}
edits_.clear();
}
void GenVersionEditsToSetFullHistoryTsLow(
const std::vector<uint64_t>& ts_lbs) {
for (const auto ts_lb : ts_lbs) {
VersionEdit* edit = new VersionEdit;
edit->SetColumnFamily(cfd_->GetID());
std::string ts_str = test::EncodeInt(ts_lb);
edit->SetFullHistoryTsLow(ts_str);
edits_.emplace_back(edit);
}
}
void VerifyFullHistoryTsLow(uint64_t expected_ts_low) {
std::unique_ptr<VersionSet> vset(
new VersionSet(dbname_, &db_options_, env_options_, table_cache_.get(),
&write_buffer_manager_, &write_controller_,
/*block_cache_tracer=*/nullptr, /*io_tracer=*/nullptr,
/*db_session_id*/ ""));
ASSERT_OK(vset->Recover(column_families_, /*read_only=*/false,
/*db_id=*/nullptr));
for (auto* cfd : *(vset->GetColumnFamilySet())) {
ASSERT_NE(nullptr, cfd);
if (cfd->GetName() == kNewCfName) {
ASSERT_EQ(test::EncodeInt(expected_ts_low), cfd->GetFullHistoryTsLow());
} else {
ASSERT_TRUE(cfd->GetFullHistoryTsLow().empty());
}
}
}
void DoTest(const std::vector<uint64_t>& ts_lbs) {
if (ts_lbs.empty()) {
return;
}
GenVersionEditsToSetFullHistoryTsLow(ts_lbs);
Status s;
mutex_.Lock();
s = versions_->LogAndApply(cfd_, *(cfd_->GetLatestMutableCFOptions()),
edits_, &mutex_);
mutex_.Unlock();
ASSERT_OK(s);
VerifyFullHistoryTsLow(*std::max_element(ts_lbs.begin(), ts_lbs.end()));
}
protected:
ColumnFamilyData* cfd_{nullptr};
// edits_ must contain and own pointers to heap-alloc VersionEdit objects.
autovector<VersionEdit*> edits_;
};
const std::string VersionSetWithTimestampTest::kNewCfName("new_cf");
TEST_F(VersionSetWithTimestampTest, SetFullHistoryTsLbOnce) {
constexpr uint64_t kTsLow = 100;
DoTest({kTsLow});
}
// Simulate the application increasing full_history_ts_low.
TEST_F(VersionSetWithTimestampTest, IncreaseFullHistoryTsLb) {
const std::vector<uint64_t> ts_lbs = {100, 101, 102, 103};
DoTest(ts_lbs);
}
// Simulate the application trying to decrease full_history_ts_low
// unsuccessfully. If the application calls public API sequentially to
// decrease the lower bound ts, RocksDB will return an InvalidArgument
// status before involving VersionSet. Only when multiple threads trying
// to decrease the lower bound concurrently will this case ever happen. Even
// so, the lower bound cannot be decreased. The application will be notified
// via return value of the API.
TEST_F(VersionSetWithTimestampTest, TryDecreaseFullHistoryTsLb) {
const std::vector<uint64_t> ts_lbs = {103, 102, 101, 100};
DoTest(ts_lbs);
}
class VersionSetAtomicGroupTest : public VersionSetTestBase,
public testing::Test {
public:
VersionSetAtomicGroupTest()
: VersionSetTestBase("version_set_atomic_group_test") {}
void SetUp() override {
PrepareManifest(&column_families_, &last_seqno_, &log_writer_);
SetupTestSyncPoints();
}
void SetupValidAtomicGroup(int atomic_group_size) {
edits_.resize(atomic_group_size);
int remaining = atomic_group_size;
for (size_t i = 0; i != edits_.size(); ++i) {
edits_[i].SetLogNumber(0);
edits_[i].SetNextFile(2);
edits_[i].MarkAtomicGroup(--remaining);
edits_[i].SetLastSequence(last_seqno_++);
}
ASSERT_OK(SetCurrentFile(fs_.get(), dbname_, 1, nullptr));
}
void SetupIncompleteTrailingAtomicGroup(int atomic_group_size) {
edits_.resize(atomic_group_size);
int remaining = atomic_group_size;
for (size_t i = 0; i != edits_.size(); ++i) {
edits_[i].SetLogNumber(0);
edits_[i].SetNextFile(2);
edits_[i].MarkAtomicGroup(--remaining);
edits_[i].SetLastSequence(last_seqno_++);
}
ASSERT_OK(SetCurrentFile(fs_.get(), dbname_, 1, nullptr));
}
void SetupCorruptedAtomicGroup(int atomic_group_size) {
edits_.resize(atomic_group_size);
int remaining = atomic_group_size;
for (size_t i = 0; i != edits_.size(); ++i) {
edits_[i].SetLogNumber(0);
edits_[i].SetNextFile(2);
if (i != ((size_t)atomic_group_size / 2)) {
edits_[i].MarkAtomicGroup(--remaining);
}
edits_[i].SetLastSequence(last_seqno_++);
}
ASSERT_OK(SetCurrentFile(fs_.get(), dbname_, 1, nullptr));
}
void SetupIncorrectAtomicGroup(int atomic_group_size) {
edits_.resize(atomic_group_size);
int remaining = atomic_group_size;
for (size_t i = 0; i != edits_.size(); ++i) {
edits_[i].SetLogNumber(0);
edits_[i].SetNextFile(2);
if (i != 1) {
edits_[i].MarkAtomicGroup(--remaining);
} else {
edits_[i].MarkAtomicGroup(remaining--);
}
edits_[i].SetLastSequence(last_seqno_++);
}
ASSERT_OK(SetCurrentFile(fs_.get(), dbname_, 1, nullptr));
}
void SetupTestSyncPoints() {
SyncPoint::GetInstance()->DisableProcessing();
SyncPoint::GetInstance()->ClearAllCallBacks();
SyncPoint::GetInstance()->SetCallBack(
"AtomicGroupReadBuffer::AddEdit:FirstInAtomicGroup", [&](void* arg) {
VersionEdit* e = reinterpret_cast<VersionEdit*>(arg);
EXPECT_EQ(edits_.front().DebugString(),
e->DebugString()); // compare based on value
first_in_atomic_group_ = true;
});
SyncPoint::GetInstance()->SetCallBack(
"AtomicGroupReadBuffer::AddEdit:LastInAtomicGroup", [&](void* arg) {
VersionEdit* e = reinterpret_cast<VersionEdit*>(arg);
EXPECT_EQ(edits_.back().DebugString(),
e->DebugString()); // compare based on value
EXPECT_TRUE(first_in_atomic_group_);
last_in_atomic_group_ = true;
});
SyncPoint::GetInstance()->SetCallBack(
"VersionEditHandlerBase::Iterate:Finish", [&](void* arg) {
num_recovered_edits_ = *reinterpret_cast<size_t*>(arg);
});
SyncPoint::GetInstance()->SetCallBack(
"AtomicGroupReadBuffer::AddEdit:AtomicGroup",
[&](void* /* arg */) { ++num_edits_in_atomic_group_; });
SyncPoint::GetInstance()->SetCallBack(
"AtomicGroupReadBuffer::AddEdit:AtomicGroupMixedWithNormalEdits",
[&](void* arg) {
corrupted_edit_ = *reinterpret_cast<VersionEdit*>(arg);
});
SyncPoint::GetInstance()->SetCallBack(
"AtomicGroupReadBuffer::AddEdit:IncorrectAtomicGroupSize",
[&](void* arg) {
edit_with_incorrect_group_size_ =
*reinterpret_cast<VersionEdit*>(arg);
});
SyncPoint::GetInstance()->EnableProcessing();
}
void AddNewEditsToLog(int num_edits) {
for (int i = 0; i < num_edits; i++) {
std::string record;
edits_[i].EncodeTo(&record);
ASSERT_OK(log_writer_->AddRecord(record));
}
}
void TearDown() override {
SyncPoint::GetInstance()->DisableProcessing();
SyncPoint::GetInstance()->ClearAllCallBacks();
log_writer_.reset();
}
protected:
std::vector<ColumnFamilyDescriptor> column_families_;
SequenceNumber last_seqno_;
std::vector<VersionEdit> edits_;
bool first_in_atomic_group_ = false;
bool last_in_atomic_group_ = false;
int num_edits_in_atomic_group_ = 0;
size_t num_recovered_edits_ = 0;
VersionEdit corrupted_edit_;
VersionEdit edit_with_incorrect_group_size_;
std::unique_ptr<log::Writer> log_writer_;
};
TEST_F(VersionSetAtomicGroupTest, HandleValidAtomicGroupWithVersionSetRecover) {
const int kAtomicGroupSize = 3;
SetupValidAtomicGroup(kAtomicGroupSize);
AddNewEditsToLog(kAtomicGroupSize);
EXPECT_OK(versions_->Recover(column_families_, false));
EXPECT_EQ(column_families_.size(),
versions_->GetColumnFamilySet()->NumberOfColumnFamilies());
EXPECT_TRUE(first_in_atomic_group_);
EXPECT_TRUE(last_in_atomic_group_);
EXPECT_EQ(num_initial_edits_ + kAtomicGroupSize, num_recovered_edits_);
}
TEST_F(VersionSetAtomicGroupTest,
HandleValidAtomicGroupWithReactiveVersionSetRecover) {
const int kAtomicGroupSize = 3;
SetupValidAtomicGroup(kAtomicGroupSize);
AddNewEditsToLog(kAtomicGroupSize);
std::unique_ptr<log::FragmentBufferedReader> manifest_reader;
std::unique_ptr<log::Reader::Reporter> manifest_reporter;
std::unique_ptr<Status> manifest_reader_status;
EXPECT_OK(reactive_versions_->Recover(column_families_, &manifest_reader,
&manifest_reporter,
&manifest_reader_status));
EXPECT_EQ(column_families_.size(),
reactive_versions_->GetColumnFamilySet()->NumberOfColumnFamilies());
EXPECT_TRUE(first_in_atomic_group_);
EXPECT_TRUE(last_in_atomic_group_);
// The recover should clean up the replay buffer.
EXPECT_TRUE(reactive_versions_->TEST_read_edits_in_atomic_group() == 0);
EXPECT_TRUE(reactive_versions_->replay_buffer().size() == 0);
EXPECT_EQ(num_initial_edits_ + kAtomicGroupSize, num_recovered_edits_);
}
TEST_F(VersionSetAtomicGroupTest,
HandleValidAtomicGroupWithReactiveVersionSetReadAndApply) {
const int kAtomicGroupSize = 3;
SetupValidAtomicGroup(kAtomicGroupSize);
std::unique_ptr<log::FragmentBufferedReader> manifest_reader;
std::unique_ptr<log::Reader::Reporter> manifest_reporter;
std::unique_ptr<Status> manifest_reader_status;
EXPECT_OK(reactive_versions_->Recover(column_families_, &manifest_reader,
&manifest_reporter,
&manifest_reader_status));
EXPECT_EQ(num_initial_edits_, num_recovered_edits_);
AddNewEditsToLog(kAtomicGroupSize);
InstrumentedMutex mu;
std::unordered_set<ColumnFamilyData*> cfds_changed;
mu.Lock();
EXPECT_OK(reactive_versions_->ReadAndApply(
&mu, &manifest_reader, manifest_reader_status.get(), &cfds_changed));
mu.Unlock();
EXPECT_TRUE(first_in_atomic_group_);
EXPECT_TRUE(last_in_atomic_group_);
// The recover should clean up the replay buffer.
EXPECT_TRUE(reactive_versions_->TEST_read_edits_in_atomic_group() == 0);
EXPECT_TRUE(reactive_versions_->replay_buffer().size() == 0);
EXPECT_EQ(kAtomicGroupSize, num_recovered_edits_);
}
TEST_F(VersionSetAtomicGroupTest,
HandleIncompleteTrailingAtomicGroupWithVersionSetRecover) {
const int kAtomicGroupSize = 4;
const int kNumberOfPersistedVersionEdits = kAtomicGroupSize - 1;
SetupIncompleteTrailingAtomicGroup(kAtomicGroupSize);
AddNewEditsToLog(kNumberOfPersistedVersionEdits);
EXPECT_OK(versions_->Recover(column_families_, false));
EXPECT_EQ(column_families_.size(),
versions_->GetColumnFamilySet()->NumberOfColumnFamilies());
EXPECT_TRUE(first_in_atomic_group_);
EXPECT_FALSE(last_in_atomic_group_);
EXPECT_EQ(kNumberOfPersistedVersionEdits, num_edits_in_atomic_group_);
EXPECT_EQ(num_initial_edits_, num_recovered_edits_);
}
TEST_F(VersionSetAtomicGroupTest,
HandleIncompleteTrailingAtomicGroupWithReactiveVersionSetRecover) {
const int kAtomicGroupSize = 4;
const int kNumberOfPersistedVersionEdits = kAtomicGroupSize - 1;
SetupIncompleteTrailingAtomicGroup(kAtomicGroupSize);
AddNewEditsToLog(kNumberOfPersistedVersionEdits);
std::unique_ptr<log::FragmentBufferedReader> manifest_reader;
std::unique_ptr<log::Reader::Reporter> manifest_reporter;
std::unique_ptr<Status> manifest_reader_status;
EXPECT_OK(reactive_versions_->Recover(column_families_, &manifest_reader,
&manifest_reporter,
&manifest_reader_status));
EXPECT_EQ(column_families_.size(),
reactive_versions_->GetColumnFamilySet()->NumberOfColumnFamilies());
EXPECT_TRUE(first_in_atomic_group_);
EXPECT_FALSE(last_in_atomic_group_);
EXPECT_EQ(kNumberOfPersistedVersionEdits, num_edits_in_atomic_group_);
// Reactive version set should store the edits in the replay buffer.
EXPECT_TRUE(reactive_versions_->TEST_read_edits_in_atomic_group() ==
kNumberOfPersistedVersionEdits);
EXPECT_TRUE(reactive_versions_->replay_buffer().size() == kAtomicGroupSize);
// Write the last record. The reactive version set should now apply all
// edits.
std::string last_record;
edits_[kAtomicGroupSize - 1].EncodeTo(&last_record);
EXPECT_OK(log_writer_->AddRecord(last_record));
InstrumentedMutex mu;
std::unordered_set<ColumnFamilyData*> cfds_changed;
mu.Lock();
EXPECT_OK(reactive_versions_->ReadAndApply(
&mu, &manifest_reader, manifest_reader_status.get(), &cfds_changed));
mu.Unlock();
// Reactive version set should be empty now.
EXPECT_TRUE(reactive_versions_->TEST_read_edits_in_atomic_group() == 0);
EXPECT_TRUE(reactive_versions_->replay_buffer().size() == 0);
EXPECT_EQ(num_initial_edits_, num_recovered_edits_);
}
TEST_F(VersionSetAtomicGroupTest,
HandleIncompleteTrailingAtomicGroupWithReactiveVersionSetReadAndApply) {
const int kAtomicGroupSize = 4;
const int kNumberOfPersistedVersionEdits = kAtomicGroupSize - 1;
SetupIncompleteTrailingAtomicGroup(kAtomicGroupSize);
std::unique_ptr<log::FragmentBufferedReader> manifest_reader;
std::unique_ptr<log::Reader::Reporter> manifest_reporter;
std::unique_ptr<Status> manifest_reader_status;
// No edits in an atomic group.
EXPECT_OK(reactive_versions_->Recover(column_families_, &manifest_reader,
&manifest_reporter,
&manifest_reader_status));
EXPECT_EQ(column_families_.size(),
reactive_versions_->GetColumnFamilySet()->NumberOfColumnFamilies());
EXPECT_EQ(num_initial_edits_, num_recovered_edits_);
// Write a few edits in an atomic group.
AddNewEditsToLog(kNumberOfPersistedVersionEdits);
InstrumentedMutex mu;
std::unordered_set<ColumnFamilyData*> cfds_changed;
mu.Lock();
EXPECT_OK(reactive_versions_->ReadAndApply(
&mu, &manifest_reader, manifest_reader_status.get(), &cfds_changed));
mu.Unlock();
EXPECT_TRUE(first_in_atomic_group_);
EXPECT_FALSE(last_in_atomic_group_);
EXPECT_EQ(kNumberOfPersistedVersionEdits, num_edits_in_atomic_group_);
// Reactive version set should store the edits in the replay buffer.
EXPECT_TRUE(reactive_versions_->TEST_read_edits_in_atomic_group() ==
kNumberOfPersistedVersionEdits);
EXPECT_TRUE(reactive_versions_->replay_buffer().size() == kAtomicGroupSize);
}
TEST_F(VersionSetAtomicGroupTest,
HandleCorruptedAtomicGroupWithVersionSetRecover) {
const int kAtomicGroupSize = 4;
SetupCorruptedAtomicGroup(kAtomicGroupSize);
AddNewEditsToLog(kAtomicGroupSize);
EXPECT_NOK(versions_->Recover(column_families_, false));
EXPECT_EQ(column_families_.size(),
versions_->GetColumnFamilySet()->NumberOfColumnFamilies());
EXPECT_EQ(edits_[kAtomicGroupSize / 2].DebugString(),
corrupted_edit_.DebugString());
}
TEST_F(VersionSetAtomicGroupTest,
HandleCorruptedAtomicGroupWithReactiveVersionSetRecover) {
const int kAtomicGroupSize = 4;
SetupCorruptedAtomicGroup(kAtomicGroupSize);
AddNewEditsToLog(kAtomicGroupSize);
std::unique_ptr<log::FragmentBufferedReader> manifest_reader;
std::unique_ptr<log::Reader::Reporter> manifest_reporter;
std::unique_ptr<Status> manifest_reader_status;
EXPECT_NOK(reactive_versions_->Recover(column_families_, &manifest_reader,
&manifest_reporter,
&manifest_reader_status));
EXPECT_EQ(column_families_.size(),
reactive_versions_->GetColumnFamilySet()->NumberOfColumnFamilies());
EXPECT_EQ(edits_[kAtomicGroupSize / 2].DebugString(),
corrupted_edit_.DebugString());
}
TEST_F(VersionSetAtomicGroupTest,
HandleCorruptedAtomicGroupWithReactiveVersionSetReadAndApply) {
const int kAtomicGroupSize = 4;
SetupCorruptedAtomicGroup(kAtomicGroupSize);
InstrumentedMutex mu;
std::unordered_set<ColumnFamilyData*> cfds_changed;
std::unique_ptr<log::FragmentBufferedReader> manifest_reader;
std::unique_ptr<log::Reader::Reporter> manifest_reporter;
std::unique_ptr<Status> manifest_reader_status;
EXPECT_OK(reactive_versions_->Recover(column_families_, &manifest_reader,
&manifest_reporter,
&manifest_reader_status));
// Write the corrupted edits.
AddNewEditsToLog(kAtomicGroupSize);
mu.Lock();
EXPECT_NOK(reactive_versions_->ReadAndApply(
&mu, &manifest_reader, manifest_reader_status.get(), &cfds_changed));
mu.Unlock();
EXPECT_EQ(edits_[kAtomicGroupSize / 2].DebugString(),
corrupted_edit_.DebugString());
}
TEST_F(VersionSetAtomicGroupTest,
HandleIncorrectAtomicGroupSizeWithVersionSetRecover) {
const int kAtomicGroupSize = 4;
SetupIncorrectAtomicGroup(kAtomicGroupSize);
AddNewEditsToLog(kAtomicGroupSize);
EXPECT_NOK(versions_->Recover(column_families_, false));
EXPECT_EQ(column_families_.size(),
versions_->GetColumnFamilySet()->NumberOfColumnFamilies());
EXPECT_EQ(edits_[1].DebugString(),
edit_with_incorrect_group_size_.DebugString());
}
TEST_F(VersionSetAtomicGroupTest,
HandleIncorrectAtomicGroupSizeWithReactiveVersionSetRecover) {
const int kAtomicGroupSize = 4;
SetupIncorrectAtomicGroup(kAtomicGroupSize);
AddNewEditsToLog(kAtomicGroupSize);
std::unique_ptr<log::FragmentBufferedReader> manifest_reader;
std::unique_ptr<log::Reader::Reporter> manifest_reporter;
std::unique_ptr<Status> manifest_reader_status;
EXPECT_NOK(reactive_versions_->Recover(column_families_, &manifest_reader,
&manifest_reporter,
&manifest_reader_status));
EXPECT_EQ(column_families_.size(),
reactive_versions_->GetColumnFamilySet()->NumberOfColumnFamilies());
EXPECT_EQ(edits_[1].DebugString(),
edit_with_incorrect_group_size_.DebugString());
}
TEST_F(VersionSetAtomicGroupTest,
HandleIncorrectAtomicGroupSizeWithReactiveVersionSetReadAndApply) {
const int kAtomicGroupSize = 4;
SetupIncorrectAtomicGroup(kAtomicGroupSize);
InstrumentedMutex mu;
std::unordered_set<ColumnFamilyData*> cfds_changed;
std::unique_ptr<log::FragmentBufferedReader> manifest_reader;
std::unique_ptr<log::Reader::Reporter> manifest_reporter;
std::unique_ptr<Status> manifest_reader_status;
EXPECT_OK(reactive_versions_->Recover(column_families_, &manifest_reader,
&manifest_reporter,
&manifest_reader_status));
AddNewEditsToLog(kAtomicGroupSize);
mu.Lock();
EXPECT_NOK(reactive_versions_->ReadAndApply(
&mu, &manifest_reader, manifest_reader_status.get(), &cfds_changed));
mu.Unlock();
EXPECT_EQ(edits_[1].DebugString(),
edit_with_incorrect_group_size_.DebugString());
}
class VersionSetTestDropOneCF : public VersionSetTestBase,
public testing::TestWithParam<std::string> {
public:
VersionSetTestDropOneCF()
: VersionSetTestBase("version_set_test_drop_one_cf") {}
};
// This test simulates the following execution sequence
// Time thread1 bg_flush_thr
// | Prepare version edits (e1,e2,e3) for atomic
// | flush cf1, cf2, cf3
// | Enqueue e to drop cfi
// | to manifest_writers_
// | Enqueue (e1,e2,e3) to manifest_writers_
// |
// | Apply e,
// | cfi.IsDropped() is true
// | Apply (e1,e2,e3),
// | since cfi.IsDropped() == true, we need to
// | drop ei and write the rest to MANIFEST.
// V
//
// Repeat the test for i = 1, 2, 3 to simulate dropping the first, middle and
// last column family in an atomic group.
TEST_P(VersionSetTestDropOneCF, HandleDroppedColumnFamilyInAtomicGroup) {
std::vector<ColumnFamilyDescriptor> column_families;
SequenceNumber last_seqno;
std::unique_ptr<log::Writer> log_writer;
PrepareManifest(&column_families, &last_seqno, &log_writer);
Status s = SetCurrentFile(fs_.get(), dbname_, 1, nullptr);
ASSERT_OK(s);
EXPECT_OK(versions_->Recover(column_families, false /* read_only */));
EXPECT_EQ(column_families.size(),
versions_->GetColumnFamilySet()->NumberOfColumnFamilies());
const int kAtomicGroupSize = 3;
const std::vector<std::string> non_default_cf_names = {
kColumnFamilyName1, kColumnFamilyName2, kColumnFamilyName3};
// Drop one column family
VersionEdit drop_cf_edit;
drop_cf_edit.DropColumnFamily();
const std::string cf_to_drop_name(GetParam());
auto cfd_to_drop =
versions_->GetColumnFamilySet()->GetColumnFamily(cf_to_drop_name);
ASSERT_NE(nullptr, cfd_to_drop);
// Increase its refcount because cfd_to_drop is used later, and we need to
// prevent it from being deleted.
cfd_to_drop->Ref();
drop_cf_edit.SetColumnFamily(cfd_to_drop->GetID());
mutex_.Lock();
s = versions_->LogAndApply(cfd_to_drop,
*cfd_to_drop->GetLatestMutableCFOptions(),
&drop_cf_edit, &mutex_);
mutex_.Unlock();
ASSERT_OK(s);
std::vector<VersionEdit> edits(kAtomicGroupSize);
uint32_t remaining = kAtomicGroupSize;
size_t i = 0;
autovector<ColumnFamilyData*> cfds;
autovector<const MutableCFOptions*> mutable_cf_options_list;
autovector<autovector<VersionEdit*>> edit_lists;
for (const auto& cf_name : non_default_cf_names) {
auto cfd = (cf_name != cf_to_drop_name)
? versions_->GetColumnFamilySet()->GetColumnFamily(cf_name)
: cfd_to_drop;
ASSERT_NE(nullptr, cfd);
cfds.push_back(cfd);
mutable_cf_options_list.emplace_back(cfd->GetLatestMutableCFOptions());
edits[i].SetColumnFamily(cfd->GetID());
edits[i].SetLogNumber(0);
edits[i].SetNextFile(2);
edits[i].MarkAtomicGroup(--remaining);
edits[i].SetLastSequence(last_seqno++);
autovector<VersionEdit*> tmp_edits;
tmp_edits.push_back(&edits[i]);
edit_lists.emplace_back(tmp_edits);
++i;
}
int called = 0;
SyncPoint::GetInstance()->DisableProcessing();
SyncPoint::GetInstance()->ClearAllCallBacks();
SyncPoint::GetInstance()->SetCallBack(
"VersionSet::ProcessManifestWrites:CheckOneAtomicGroup", [&](void* arg) {
std::vector<VersionEdit*>* tmp_edits =
reinterpret_cast<std::vector<VersionEdit*>*>(arg);
EXPECT_EQ(kAtomicGroupSize - 1, tmp_edits->size());
for (const auto e : *tmp_edits) {
bool found = false;
for (const auto& e2 : edits) {
if (&e2 == e) {
found = true;
break;
}
}
ASSERT_TRUE(found);
}
++called;
});
SyncPoint::GetInstance()->EnableProcessing();
mutex_.Lock();
s = versions_->LogAndApply(cfds, mutable_cf_options_list, edit_lists,
&mutex_);
mutex_.Unlock();
ASSERT_OK(s);
ASSERT_EQ(1, called);
cfd_to_drop->UnrefAndTryDelete();
}
INSTANTIATE_TEST_CASE_P(
AtomicGroup, VersionSetTestDropOneCF,
testing::Values(VersionSetTestBase::kColumnFamilyName1,
VersionSetTestBase::kColumnFamilyName2,
VersionSetTestBase::kColumnFamilyName3));
class EmptyDefaultCfNewManifest : public VersionSetTestBase,
public testing::Test {
public:
EmptyDefaultCfNewManifest() : VersionSetTestBase("version_set_new_db_test") {}
// Emulate DBImpl::NewDB()
void PrepareManifest(std::vector<ColumnFamilyDescriptor>* /*column_families*/,
SequenceNumber* /*last_seqno*/,
std::unique_ptr<log::Writer>* log_writer) override {
assert(log_writer != nullptr);
VersionEdit new_db;
new_db.SetLogNumber(0);
const std::string manifest_path = DescriptorFileName(dbname_, 1);
const auto& fs = env_->GetFileSystem();
std::unique_ptr<WritableFileWriter> file_writer;
Status s = WritableFileWriter::Create(
fs, manifest_path, fs->OptimizeForManifestWrite(env_options_),
&file_writer, nullptr);
ASSERT_OK(s);
log_writer->reset(new log::Writer(std::move(file_writer), 0, true));
std::string record;
ASSERT_TRUE(new_db.EncodeTo(&record));
s = (*log_writer)->AddRecord(record);
ASSERT_OK(s);
// Create new column family
VersionEdit new_cf;
new_cf.AddColumnFamily(VersionSetTestBase::kColumnFamilyName1);
new_cf.SetColumnFamily(1);
new_cf.SetLastSequence(2);
new_cf.SetNextFile(2);
record.clear();
ASSERT_TRUE(new_cf.EncodeTo(&record));
s = (*log_writer)->AddRecord(record);
ASSERT_OK(s);
}
protected:
bool write_dbid_to_manifest_ = false;
std::unique_ptr<log::Writer> log_writer_;
};
// Create db, create column family. Cf creation will switch to a new MANIFEST.
// Then reopen db, trying to recover.
TEST_F(EmptyDefaultCfNewManifest, Recover) {
PrepareManifest(nullptr, nullptr, &log_writer_);
log_writer_.reset();
Status s =
SetCurrentFile(fs_.get(), dbname_, 1, /*directory_to_fsync=*/nullptr);
ASSERT_OK(s);
std::string manifest_path;
VerifyManifest(&manifest_path);
std::vector<ColumnFamilyDescriptor> column_families;
column_families.emplace_back(kDefaultColumnFamilyName, cf_options_);
column_families.emplace_back(VersionSetTestBase::kColumnFamilyName1,
cf_options_);
std::string db_id;
bool has_missing_table_file = false;
s = versions_->TryRecoverFromOneManifest(
manifest_path, column_families, false, &db_id, &has_missing_table_file);
ASSERT_OK(s);
ASSERT_FALSE(has_missing_table_file);
}
class VersionSetTestEmptyDb
: public VersionSetTestBase,
public testing::TestWithParam<
std::tuple<bool, bool, std::vector<std::string>>> {
public:
static const std::string kUnknownColumnFamilyName;
VersionSetTestEmptyDb() : VersionSetTestBase("version_set_test_empty_db") {}
protected:
void PrepareManifest(std::vector<ColumnFamilyDescriptor>* /*column_families*/,
SequenceNumber* /*last_seqno*/,
std::unique_ptr<log::Writer>* log_writer) override {
assert(nullptr != log_writer);
VersionEdit new_db;
if (db_options_.write_dbid_to_manifest) {
DBOptions tmp_db_options;
tmp_db_options.env = env_;
std::unique_ptr<DBImpl> impl(new DBImpl(tmp_db_options, dbname_));
std::string db_id;
impl->GetDbIdentityFromIdentityFile(&db_id);
new_db.SetDBId(db_id);
}
const std::string manifest_path = DescriptorFileName(dbname_, 1);
const auto& fs = env_->GetFileSystem();
std::unique_ptr<WritableFileWriter> file_writer;
Status s = WritableFileWriter::Create(
fs, manifest_path, fs->OptimizeForManifestWrite(env_options_),
&file_writer, nullptr);
ASSERT_OK(s);
{
log_writer->reset(new log::Writer(std::move(file_writer), 0, false));
std::string record;
new_db.EncodeTo(&record);
s = (*log_writer)->AddRecord(record);
ASSERT_OK(s);
}
}
std::unique_ptr<log::Writer> log_writer_;
};
const std::string VersionSetTestEmptyDb::kUnknownColumnFamilyName = "unknown";
TEST_P(VersionSetTestEmptyDb, OpenFromIncompleteManifest0) {
db_options_.write_dbid_to_manifest = std::get<0>(GetParam());
PrepareManifest(nullptr, nullptr, &log_writer_);
log_writer_.reset();
Status s =
SetCurrentFile(fs_.get(), dbname_, 1, /*directory_to_fsync=*/nullptr);
ASSERT_OK(s);
std::string manifest_path;
VerifyManifest(&manifest_path);
bool read_only = std::get<1>(GetParam());
const std::vector<std::string> cf_names = std::get<2>(GetParam());
std::vector<ColumnFamilyDescriptor> column_families;
for (const auto& cf_name : cf_names) {
column_families.emplace_back(cf_name, cf_options_);
}
std::string db_id;
bool has_missing_table_file = false;
s = versions_->TryRecoverFromOneManifest(manifest_path, column_families,
read_only, &db_id,
&has_missing_table_file);
auto iter =
std::find(cf_names.begin(), cf_names.end(), kDefaultColumnFamilyName);
if (iter == cf_names.end()) {
ASSERT_TRUE(s.IsInvalidArgument());
} else {
ASSERT_NE(s.ToString().find(manifest_path), std::string::npos);
ASSERT_TRUE(s.IsCorruption());
}
}
TEST_P(VersionSetTestEmptyDb, OpenFromIncompleteManifest1) {
db_options_.write_dbid_to_manifest = std::get<0>(GetParam());
PrepareManifest(nullptr, nullptr, &log_writer_);
// Only a subset of column families in the MANIFEST.
VersionEdit new_cf1;
new_cf1.AddColumnFamily(VersionSetTestBase::kColumnFamilyName1);
new_cf1.SetColumnFamily(1);
Status s;
{
std::string record;
new_cf1.EncodeTo(&record);
s = log_writer_->AddRecord(record);
ASSERT_OK(s);
}
log_writer_.reset();
s = SetCurrentFile(fs_.get(), dbname_, 1, /*directory_to_fsync=*/nullptr);
ASSERT_OK(s);
std::string manifest_path;
VerifyManifest(&manifest_path);
bool read_only = std::get<1>(GetParam());
const std::vector<std::string>& cf_names = std::get<2>(GetParam());
std::vector<ColumnFamilyDescriptor> column_families;
for (const auto& cf_name : cf_names) {
column_families.emplace_back(cf_name, cf_options_);
}
std::string db_id;
bool has_missing_table_file = false;
s = versions_->TryRecoverFromOneManifest(manifest_path, column_families,
read_only, &db_id,
&has_missing_table_file);
auto iter =
std::find(cf_names.begin(), cf_names.end(), kDefaultColumnFamilyName);
if (iter == cf_names.end()) {
ASSERT_TRUE(s.IsInvalidArgument());
} else {
ASSERT_NE(s.ToString().find(manifest_path), std::string::npos);
ASSERT_TRUE(s.IsCorruption());
}
}
TEST_P(VersionSetTestEmptyDb, OpenFromInCompleteManifest2) {
db_options_.write_dbid_to_manifest = std::get<0>(GetParam());
PrepareManifest(nullptr, nullptr, &log_writer_);
// Write all column families but no log_number, next_file_number and
// last_sequence.
const std::vector<std::string> all_cf_names = {
kDefaultColumnFamilyName, kColumnFamilyName1, kColumnFamilyName2,
kColumnFamilyName3};
uint32_t cf_id = 1;
Status s;
for (size_t i = 1; i != all_cf_names.size(); ++i) {
VersionEdit new_cf;
new_cf.AddColumnFamily(all_cf_names[i]);
new_cf.SetColumnFamily(cf_id++);
std::string record;
ASSERT_TRUE(new_cf.EncodeTo(&record));
s = log_writer_->AddRecord(record);
ASSERT_OK(s);
}
log_writer_.reset();
s = SetCurrentFile(fs_.get(), dbname_, 1, /*directory_to_fsync=*/nullptr);
ASSERT_OK(s);
std::string manifest_path;
VerifyManifest(&manifest_path);
bool read_only = std::get<1>(GetParam());
const std::vector<std::string>& cf_names = std::get<2>(GetParam());
std::vector<ColumnFamilyDescriptor> column_families;
for (const auto& cf_name : cf_names) {
column_families.emplace_back(cf_name, cf_options_);
}
std::string db_id;
bool has_missing_table_file = false;
s = versions_->TryRecoverFromOneManifest(manifest_path, column_families,
read_only, &db_id,
&has_missing_table_file);
auto iter =
std::find(cf_names.begin(), cf_names.end(), kDefaultColumnFamilyName);
if (iter == cf_names.end()) {
ASSERT_TRUE(s.IsInvalidArgument());
} else {
ASSERT_NE(s.ToString().find(manifest_path), std::string::npos);
ASSERT_TRUE(s.IsCorruption());
}
}
TEST_P(VersionSetTestEmptyDb, OpenManifestWithUnknownCF) {
db_options_.write_dbid_to_manifest = std::get<0>(GetParam());
PrepareManifest(nullptr, nullptr, &log_writer_);
// Write all column families but no log_number, next_file_number and
// last_sequence.
const std::vector<std::string> all_cf_names = {
kDefaultColumnFamilyName, kColumnFamilyName1, kColumnFamilyName2,
kColumnFamilyName3};
uint32_t cf_id = 1;
Status s;
for (size_t i = 1; i != all_cf_names.size(); ++i) {
VersionEdit new_cf;
new_cf.AddColumnFamily(all_cf_names[i]);
new_cf.SetColumnFamily(cf_id++);
std::string record;
ASSERT_TRUE(new_cf.EncodeTo(&record));
s = log_writer_->AddRecord(record);
ASSERT_OK(s);
}
{
VersionEdit tmp_edit;
tmp_edit.SetColumnFamily(4);
tmp_edit.SetLogNumber(0);
tmp_edit.SetNextFile(2);
tmp_edit.SetLastSequence(0);
std::string record;
ASSERT_TRUE(tmp_edit.EncodeTo(&record));
s = log_writer_->AddRecord(record);
ASSERT_OK(s);
}
log_writer_.reset();
s = SetCurrentFile(fs_.get(), dbname_, 1, /*directory_to_fsync=*/nullptr);
ASSERT_OK(s);
std::string manifest_path;
VerifyManifest(&manifest_path);
bool read_only = std::get<1>(GetParam());
const std::vector<std::string>& cf_names = std::get<2>(GetParam());
std::vector<ColumnFamilyDescriptor> column_families;
for (const auto& cf_name : cf_names) {
column_families.emplace_back(cf_name, cf_options_);
}
std::string db_id;
bool has_missing_table_file = false;
s = versions_->TryRecoverFromOneManifest(manifest_path, column_families,
read_only, &db_id,
&has_missing_table_file);
auto iter =
std::find(cf_names.begin(), cf_names.end(), kDefaultColumnFamilyName);
if (iter == cf_names.end()) {
ASSERT_TRUE(s.IsInvalidArgument());
} else {
ASSERT_NE(s.ToString().find(manifest_path), std::string::npos);
ASSERT_TRUE(s.IsCorruption());
}
}
TEST_P(VersionSetTestEmptyDb, OpenCompleteManifest) {
db_options_.write_dbid_to_manifest = std::get<0>(GetParam());
PrepareManifest(nullptr, nullptr, &log_writer_);
// Write all column families but no log_number, next_file_number and
// last_sequence.
const std::vector<std::string> all_cf_names = {
kDefaultColumnFamilyName, kColumnFamilyName1, kColumnFamilyName2,
kColumnFamilyName3};
uint32_t cf_id = 1;
Status s;
for (size_t i = 1; i != all_cf_names.size(); ++i) {
VersionEdit new_cf;
new_cf.AddColumnFamily(all_cf_names[i]);
new_cf.SetColumnFamily(cf_id++);
std::string record;
ASSERT_TRUE(new_cf.EncodeTo(&record));
s = log_writer_->AddRecord(record);
ASSERT_OK(s);
}
{
VersionEdit tmp_edit;
tmp_edit.SetLogNumber(0);
tmp_edit.SetNextFile(2);
tmp_edit.SetLastSequence(0);
std::string record;
ASSERT_TRUE(tmp_edit.EncodeTo(&record));
s = log_writer_->AddRecord(record);
ASSERT_OK(s);
}
log_writer_.reset();
s = SetCurrentFile(fs_.get(), dbname_, 1, /*directory_to_fsync=*/nullptr);
ASSERT_OK(s);
std::string manifest_path;
VerifyManifest(&manifest_path);
bool read_only = std::get<1>(GetParam());
const std::vector<std::string>& cf_names = std::get<2>(GetParam());
std::vector<ColumnFamilyDescriptor> column_families;
for (const auto& cf_name : cf_names) {
column_families.emplace_back(cf_name, cf_options_);
}
std::string db_id;
bool has_missing_table_file = false;
s = versions_->TryRecoverFromOneManifest(manifest_path, column_families,
read_only, &db_id,
&has_missing_table_file);
auto iter =
std::find(cf_names.begin(), cf_names.end(), kDefaultColumnFamilyName);
if (iter == cf_names.end()) {
ASSERT_TRUE(s.IsInvalidArgument());
} else if (read_only) {
ASSERT_OK(s);
ASSERT_FALSE(has_missing_table_file);
} else if (cf_names.size() == all_cf_names.size()) {
ASSERT_OK(s);
ASSERT_FALSE(has_missing_table_file);
} else if (cf_names.size() < all_cf_names.size()) {
ASSERT_TRUE(s.IsInvalidArgument());
} else {
ASSERT_OK(s);
ASSERT_FALSE(has_missing_table_file);
ColumnFamilyData* cfd = versions_->GetColumnFamilySet()->GetColumnFamily(
kUnknownColumnFamilyName);
ASSERT_EQ(nullptr, cfd);
}
}
INSTANTIATE_TEST_CASE_P(
BestEffortRecovery, VersionSetTestEmptyDb,
testing::Combine(
/*write_dbid_to_manifest=*/testing::Bool(),
/*read_only=*/testing::Bool(),
/*cf_names=*/
testing::Values(
std::vector<std::string>(),
std::vector<std::string>({kDefaultColumnFamilyName}),
std::vector<std::string>({VersionSetTestBase::kColumnFamilyName1,
VersionSetTestBase::kColumnFamilyName2,
VersionSetTestBase::kColumnFamilyName3}),
std::vector<std::string>({kDefaultColumnFamilyName,
VersionSetTestBase::kColumnFamilyName1}),
std::vector<std::string>({kDefaultColumnFamilyName,
VersionSetTestBase::kColumnFamilyName1,
VersionSetTestBase::kColumnFamilyName2,
VersionSetTestBase::kColumnFamilyName3}),
std::vector<std::string>(
{kDefaultColumnFamilyName,
VersionSetTestBase::kColumnFamilyName1,
VersionSetTestBase::kColumnFamilyName2,
VersionSetTestBase::kColumnFamilyName3,
VersionSetTestEmptyDb::kUnknownColumnFamilyName}))));
class VersionSetTestMissingFiles : public VersionSetTestBase,
public testing::Test {
public:
VersionSetTestMissingFiles()
: VersionSetTestBase("version_set_test_missing_files"),
block_based_table_options_(),
table_factory_(std::make_shared<BlockBasedTableFactory>(
block_based_table_options_)),
internal_comparator_(
std::make_shared<InternalKeyComparator>(options_.comparator)) {}
protected:
void PrepareManifest(std::vector<ColumnFamilyDescriptor>* column_families,
SequenceNumber* last_seqno,
std::unique_ptr<log::Writer>* log_writer) override {
assert(column_families != nullptr);
assert(last_seqno != nullptr);
assert(log_writer != nullptr);
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->reset(new log::Writer(std::move(file_writer), 0, false));
VersionEdit new_db;
if (db_options_.write_dbid_to_manifest) {
DBOptions tmp_db_options;
tmp_db_options.env = env_;
std::unique_ptr<DBImpl> impl(new DBImpl(tmp_db_options, dbname_));
std::string db_id;
impl->GetDbIdentityFromIdentityFile(&db_id);
new_db.SetDBId(db_id);
}
{
std::string record;
ASSERT_TRUE(new_db.EncodeTo(&record));
s = (*log_writer)->AddRecord(record);
ASSERT_OK(s);
}
const std::vector<std::string> cf_names = {
kDefaultColumnFamilyName, kColumnFamilyName1, kColumnFamilyName2,
kColumnFamilyName3};
uint32_t cf_id = 1; // default cf id is 0
cf_options_.table_factory = table_factory_;
for (const auto& cf_name : cf_names) {
column_families->emplace_back(cf_name, cf_options_);
if (cf_name == kDefaultColumnFamilyName) {
continue;
}
VersionEdit new_cf;
new_cf.AddColumnFamily(cf_name);
new_cf.SetColumnFamily(cf_id);
std::string record;
ASSERT_TRUE(new_cf.EncodeTo(&record));
s = (*log_writer)->AddRecord(record);
ASSERT_OK(s);
VersionEdit cf_files;
cf_files.SetColumnFamily(cf_id);
cf_files.SetLogNumber(0);
record.clear();
ASSERT_TRUE(cf_files.EncodeTo(&record));
s = (*log_writer)->AddRecord(record);
ASSERT_OK(s);
++cf_id;
}
SequenceNumber seq = 2;
{
VersionEdit edit;
edit.SetNextFile(7);
edit.SetLastSequence(seq);
std::string record;
ASSERT_TRUE(edit.EncodeTo(&record));
s = (*log_writer)->AddRecord(record);
ASSERT_OK(s);
}
*last_seqno = seq + 1;
}
struct SstInfo {
uint64_t file_number;
std::string column_family;
std::string key; // the only key
int level = 0;
SstInfo(uint64_t file_num, const std::string& cf_name,
const std::string& _key)
: SstInfo(file_num, cf_name, _key, 0) {}
SstInfo(uint64_t file_num, const std::string& cf_name,
const std::string& _key, int lvl)
: file_number(file_num),
column_family(cf_name),
key(_key),
level(lvl) {}
};
// Create dummy sst, return their metadata. Note that only file name and size
// are used.
void CreateDummyTableFiles(const std::vector<SstInfo>& file_infos,
std::vector<FileMetaData>* file_metas) {
assert(file_metas != nullptr);
for (const auto& info : file_infos) {
uint64_t file_num = info.file_number;
std::string fname = MakeTableFileName(dbname_, file_num);
std::unique_ptr<FSWritableFile> file;
Status s = fs_->NewWritableFile(fname, FileOptions(), &file, nullptr);
ASSERT_OK(s);
std::unique_ptr<WritableFileWriter> fwriter(new WritableFileWriter(
std::move(file), fname, FileOptions(), env_->GetSystemClock().get()));
IntTblPropCollectorFactories int_tbl_prop_collector_factories;
std::unique_ptr<TableBuilder> builder(table_factory_->NewTableBuilder(
TableBuilderOptions(
immutable_options_, mutable_cf_options_, *internal_comparator_,
&int_tbl_prop_collector_factories, kNoCompression,
CompressionOptions(),
TablePropertiesCollectorFactory::Context::kUnknownColumnFamily,
info.column_family, info.level),
fwriter.get()));
InternalKey ikey(info.key, 0, ValueType::kTypeValue);
builder->Add(ikey.Encode(), "value");
ASSERT_OK(builder->Finish());
fwriter->Flush();
uint64_t file_size = 0;
s = fs_->GetFileSize(fname, IOOptions(), &file_size, nullptr);
ASSERT_OK(s);
ASSERT_NE(0, file_size);
file_metas->emplace_back(file_num, /*file_path_id=*/0, file_size, ikey,
ikey, 0, 0, false, Temperature::kUnknown, 0, 0,
0, kUnknownFileChecksum,
kUnknownFileChecksumFuncName,
kDisableUserTimestamp, kDisableUserTimestamp);
}
}
// This method updates last_sequence_.
void WriteFileAdditionAndDeletionToManifest(
uint32_t cf, const std::vector<std::pair<int, FileMetaData>>& added_files,
const std::vector<std::pair<int, uint64_t>>& deleted_files) {
VersionEdit edit;
edit.SetColumnFamily(cf);
for (const auto& elem : added_files) {
int level = elem.first;
edit.AddFile(level, elem.second);
}
for (const auto& elem : deleted_files) {
int level = elem.first;
edit.DeleteFile(level, elem.second);
}
edit.SetLastSequence(last_seqno_);
++last_seqno_;
assert(log_writer_.get() != nullptr);
std::string record;
ASSERT_TRUE(edit.EncodeTo(&record));
Status s = log_writer_->AddRecord(record);
ASSERT_OK(s);
}
BlockBasedTableOptions block_based_table_options_;
std::shared_ptr<TableFactory> table_factory_;
std::shared_ptr<InternalKeyComparator> internal_comparator_;
std::vector<ColumnFamilyDescriptor> column_families_;
SequenceNumber last_seqno_;
std::unique_ptr<log::Writer> log_writer_;
};
TEST_F(VersionSetTestMissingFiles, ManifestFarBehindSst) {
std::vector<SstInfo> existing_files = {
SstInfo(100, kDefaultColumnFamilyName, "a"),
SstInfo(102, kDefaultColumnFamilyName, "b"),
SstInfo(103, kDefaultColumnFamilyName, "c"),
SstInfo(107, kDefaultColumnFamilyName, "d"),
SstInfo(110, kDefaultColumnFamilyName, "e")};
std::vector<FileMetaData> file_metas;
CreateDummyTableFiles(existing_files, &file_metas);
PrepareManifest(&column_families_, &last_seqno_, &log_writer_);
std::vector<std::pair<int, FileMetaData>> added_files;
for (uint64_t file_num = 10; file_num < 15; ++file_num) {
std::string smallest_ukey = "a";
std::string largest_ukey = "b";
InternalKey smallest_ikey(smallest_ukey, 1, ValueType::kTypeValue);
InternalKey largest_ikey(largest_ukey, 1, ValueType::kTypeValue);
FileMetaData meta = FileMetaData(
file_num, /*file_path_id=*/0, /*file_size=*/12, smallest_ikey,
largest_ikey, 0, 0, false, Temperature::kUnknown, 0, 0, 0,
kUnknownFileChecksum, kUnknownFileChecksumFuncName,
kDisableUserTimestamp, kDisableUserTimestamp);
added_files.emplace_back(0, meta);
}
WriteFileAdditionAndDeletionToManifest(
/*cf=*/0, added_files, std::vector<std::pair<int, uint64_t>>());
std::vector<std::pair<int, uint64_t>> deleted_files;
deleted_files.emplace_back(0, 10);
WriteFileAdditionAndDeletionToManifest(
/*cf=*/0, std::vector<std::pair<int, FileMetaData>>(), deleted_files);
log_writer_.reset();
Status s = SetCurrentFile(fs_.get(), dbname_, 1, nullptr);
ASSERT_OK(s);
std::string manifest_path;
VerifyManifest(&manifest_path);
std::string db_id;
bool has_missing_table_file = false;
s = versions_->TryRecoverFromOneManifest(manifest_path, column_families_,
/*read_only=*/false, &db_id,
&has_missing_table_file);
ASSERT_OK(s);
ASSERT_TRUE(has_missing_table_file);
for (ColumnFamilyData* cfd : *(versions_->GetColumnFamilySet())) {
VersionStorageInfo* vstorage = cfd->current()->storage_info();
const std::vector<FileMetaData*>& files = vstorage->LevelFiles(0);
ASSERT_TRUE(files.empty());
}
}
TEST_F(VersionSetTestMissingFiles, ManifestAheadofSst) {
std::vector<SstInfo> existing_files = {
SstInfo(100, kDefaultColumnFamilyName, "a"),
SstInfo(102, kDefaultColumnFamilyName, "b"),
SstInfo(103, kDefaultColumnFamilyName, "c"),
SstInfo(107, kDefaultColumnFamilyName, "d"),
SstInfo(110, kDefaultColumnFamilyName, "e")};
std::vector<FileMetaData> file_metas;
CreateDummyTableFiles(existing_files, &file_metas);
PrepareManifest(&column_families_, &last_seqno_, &log_writer_);
std::vector<std::pair<int, FileMetaData>> added_files;
for (size_t i = 3; i != 5; ++i) {
added_files.emplace_back(0, file_metas[i]);
}
WriteFileAdditionAndDeletionToManifest(
/*cf=*/0, added_files, std::vector<std::pair<int, uint64_t>>());
added_files.clear();
for (uint64_t file_num = 120; file_num < 130; ++file_num) {
std::string smallest_ukey = "a";
std::string largest_ukey = "b";
InternalKey smallest_ikey(smallest_ukey, 1, ValueType::kTypeValue);
InternalKey largest_ikey(largest_ukey, 1, ValueType::kTypeValue);
FileMetaData meta = FileMetaData(
file_num, /*file_path_id=*/0, /*file_size=*/12, smallest_ikey,
largest_ikey, 0, 0, false, Temperature::kUnknown, 0, 0, 0,
kUnknownFileChecksum, kUnknownFileChecksumFuncName,
kDisableUserTimestamp, kDisableUserTimestamp);
added_files.emplace_back(0, meta);
}
WriteFileAdditionAndDeletionToManifest(
/*cf=*/0, added_files, std::vector<std::pair<int, uint64_t>>());
log_writer_.reset();
Status s = SetCurrentFile(fs_.get(), dbname_, 1, nullptr);
ASSERT_OK(s);
std::string manifest_path;
VerifyManifest(&manifest_path);
std::string db_id;
bool has_missing_table_file = false;
s = versions_->TryRecoverFromOneManifest(manifest_path, column_families_,
/*read_only=*/false, &db_id,
&has_missing_table_file);
ASSERT_OK(s);
ASSERT_TRUE(has_missing_table_file);
for (ColumnFamilyData* cfd : *(versions_->GetColumnFamilySet())) {
VersionStorageInfo* vstorage = cfd->current()->storage_info();
const std::vector<FileMetaData*>& files = vstorage->LevelFiles(0);
if (cfd->GetName() == kDefaultColumnFamilyName) {
ASSERT_EQ(2, files.size());
for (const auto* fmeta : files) {
if (fmeta->fd.GetNumber() != 107 && fmeta->fd.GetNumber() != 110) {
ASSERT_FALSE(true);
}
}
} else {
ASSERT_TRUE(files.empty());
}
}
}
TEST_F(VersionSetTestMissingFiles, NoFileMissing) {
std::vector<SstInfo> existing_files = {
SstInfo(100, kDefaultColumnFamilyName, "a"),
SstInfo(102, kDefaultColumnFamilyName, "b"),
SstInfo(103, kDefaultColumnFamilyName, "c"),
SstInfo(107, kDefaultColumnFamilyName, "d"),
SstInfo(110, kDefaultColumnFamilyName, "e")};
std::vector<FileMetaData> file_metas;
CreateDummyTableFiles(existing_files, &file_metas);
PrepareManifest(&column_families_, &last_seqno_, &log_writer_);
std::vector<std::pair<int, FileMetaData>> added_files;
for (const auto& meta : file_metas) {
added_files.emplace_back(0, meta);
}
WriteFileAdditionAndDeletionToManifest(
/*cf=*/0, added_files, std::vector<std::pair<int, uint64_t>>());
std::vector<std::pair<int, uint64_t>> deleted_files;
deleted_files.emplace_back(/*level=*/0, 100);
WriteFileAdditionAndDeletionToManifest(
/*cf=*/0, std::vector<std::pair<int, FileMetaData>>(), deleted_files);
log_writer_.reset();
Status s = SetCurrentFile(fs_.get(), dbname_, 1, nullptr);
ASSERT_OK(s);
std::string manifest_path;
VerifyManifest(&manifest_path);
std::string db_id;
bool has_missing_table_file = false;
s = versions_->TryRecoverFromOneManifest(manifest_path, column_families_,
/*read_only=*/false, &db_id,
&has_missing_table_file);
ASSERT_OK(s);
ASSERT_FALSE(has_missing_table_file);
for (ColumnFamilyData* cfd : *(versions_->GetColumnFamilySet())) {
VersionStorageInfo* vstorage = cfd->current()->storage_info();
const std::vector<FileMetaData*>& files = vstorage->LevelFiles(0);
if (cfd->GetName() == kDefaultColumnFamilyName) {
ASSERT_EQ(existing_files.size() - deleted_files.size(), files.size());
bool has_deleted_file = false;
for (const auto* fmeta : files) {
if (fmeta->fd.GetNumber() == 100) {
has_deleted_file = true;
break;
}
}
ASSERT_FALSE(has_deleted_file);
} else {
ASSERT_TRUE(files.empty());
}
}
}
TEST_F(VersionSetTestMissingFiles, MinLogNumberToKeep2PC) {
db_options_.allow_2pc = true;
NewDB();
SstInfo sst(100, kDefaultColumnFamilyName, "a");
std::vector<FileMetaData> file_metas;
CreateDummyTableFiles({sst}, &file_metas);
constexpr WalNumber kMinWalNumberToKeep2PC = 10;
VersionEdit edit;
edit.AddFile(0, file_metas[0]);
edit.SetMinLogNumberToKeep(kMinWalNumberToKeep2PC);
ASSERT_OK(LogAndApplyToDefaultCF(edit));
ASSERT_EQ(versions_->min_log_number_to_keep(), kMinWalNumberToKeep2PC);
for (int i = 0; i < 3; i++) {
CreateNewManifest();
ReopenDB();
ASSERT_EQ(versions_->min_log_number_to_keep(), kMinWalNumberToKeep2PC);
}
}
} // namespace ROCKSDB_NAMESPACE
int main(int argc, char** argv) {
::testing::InitGoogleTest(&argc, argv);
return RUN_ALL_TESTS();
}
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