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rocksdb/db/version_set_test.cc
Cheng Chang ee50b8d499 Be able to decrease background thread's CPU priority when creating database backup (#6602) 
Summary:
When creating a database backup, the background threads will not only consume IO resources by copying files, but also consuming CPU such as by computing checksums. During peak times, the CPU consumption by the background threads might affect online queries.

This PR makes it possible to decrease CPU priority of these threads when creating a new backup.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6602

Test Plan: make check

Reviewed By: siying, zhichao-cao

Differential Revision: D20683216

Pulled By: cheng-chang

fbshipit-source-id: 9978b9ed9488e8ce135e90ca083e5b4b7221fd84
2020-03-28 19:07:25 -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 "db/db_impl/db_impl.h"
#include "db/log_writer.h"
#include "env/mock_env.h"
#include "logging/logging.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, kInvalidBlobFileNumber,
kUnknownOldestAncesterTime, kUnknownFileCreationTime,
kUnknownFileChecksum, kUnknownFileChecksumFuncName);
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 VersionStorageInfoTest : public testing::Test {
public:
const Comparator* ucmp_;
InternalKeyComparator icmp_;
std::shared_ptr<CountingLogger> logger_;
Options options_;
ImmutableCFOptions ioptions_;
MutableCFOptions mutable_cf_options_;
VersionStorageInfo vstorage_;
InternalKey GetInternalKey(const char* ukey,
SequenceNumber smallest_seq = 100) {
return InternalKey(ukey, smallest_seq, kTypeValue);
}
VersionStorageInfoTest()
: ucmp_(BytewiseComparator()),
icmp_(ucmp_),
logger_(new CountingLogger()),
options_(GetOptionsWithNumLevels(6, logger_)),
ioptions_(options_),
mutable_cf_options_(options_),
vstorage_(&icmp_, ucmp_, 6, kCompactionStyleLevel, nullptr, false) {}
~VersionStorageInfoTest() 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) {
assert(level < vstorage_.num_levels());
FileMetaData* f = new FileMetaData(
file_number, 0, file_size, GetInternalKey(smallest, 0),
GetInternalKey(largest, 0), /* smallest_seq */ 0, /* largest_seq */ 0,
/* marked_for_compact */ false, kInvalidBlobFileNumber,
kUnknownOldestAncesterTime, kUnknownFileCreationTime,
kUnknownFileChecksum, kUnknownFileChecksumFuncName);
f->compensated_file_size = file_size;
vstorage_.AddFile(level, f);
}
void Add(int level, uint32_t file_number, const InternalKey& smallest,
const InternalKey& largest, uint64_t file_size = 0) {
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,
kInvalidBlobFileNumber, kUnknownOldestAncesterTime,
kUnknownFileCreationTime, kUnknownFileChecksum,
kUnknownFileChecksumFuncName);
f->compensated_file_size = file_size;
vstorage_.AddFile(level, f);
}
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;
}
};
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");
Add(5, 101U, "1", "2");
vstorage_.CalculateBaseBytes(ioptions_, mutable_cf_options_);
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) {
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);
vstorage_.CalculateBaseBytes(ioptions_, mutable_cf_options_);
ASSERT_EQ(0, logger_->log_count);
ASSERT_EQ(vstorage_.base_level(), 5);
Add(5, 2U, "3", "4", 550U);
vstorage_.CalculateBaseBytes(ioptions_, mutable_cf_options_);
ASSERT_EQ(0, logger_->log_count);
ASSERT_EQ(vstorage_.MaxBytesForLevel(4), 1000U);
ASSERT_EQ(vstorage_.base_level(), 4);
Add(4, 3U, "3", "4", 550U);
vstorage_.CalculateBaseBytes(ioptions_, mutable_cf_options_);
ASSERT_EQ(0, logger_->log_count);
ASSERT_EQ(vstorage_.MaxBytesForLevel(4), 1000U);
ASSERT_EQ(vstorage_.base_level(), 4);
Add(3, 4U, "3", "4", 250U);
Add(3, 5U, "5", "7", 300U);
vstorage_.CalculateBaseBytes(ioptions_, mutable_cf_options_);
ASSERT_EQ(1, logger_->log_count);
ASSERT_EQ(vstorage_.MaxBytesForLevel(4), 1005U);
ASSERT_EQ(vstorage_.MaxBytesForLevel(3), 1000U);
ASSERT_EQ(vstorage_.base_level(), 3);
Add(1, 6U, "3", "4", 5U);
Add(1, 7U, "8", "9", 5U);
logger_->log_count = 0;
vstorage_.CalculateBaseBytes(ioptions_, mutable_cf_options_);
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);
vstorage_.CalculateBaseBytes(ioptions_, mutable_cf_options_);
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);
vstorage_.CalculateBaseBytes(ioptions_, mutable_cf_options_);
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);
vstorage_.CalculateBaseBytes(ioptions_, mutable_cf_options_);
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);
vstorage_.CalculateBaseBytes(ioptions_, mutable_cf_options_);
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);
vstorage_.CalculateBaseBytes(ioptions_, mutable_cf_options_);
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, 5U, "6", "7", 1U); // Inside range of last level
Add(5, 6U, "4", "7", 10U);
ASSERT_EQ(10U, vstorage_.EstimateLiveDataSize());
}
TEST_F(VersionStorageInfoTest, EstimateLiveDataSize2) {
Add(0, 1U, "9", "9", 1U); // Level 0 is not ordered
Add(0, 1U, "5", "6", 1U); // Ignored because of [5,6] in l1
Add(1, 1U, "1", "2", 1U); // Ignored because of [2,3] in l2
Add(1, 2U, "3", "4", 1U); // Ignored because of [2,3] in l2
Add(1, 3U, "5", "6", 1U);
Add(2, 4U, "2", "3", 1U);
Add(3, 5U, "7", "8", 1U);
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);
vstorage_.UpdateNumNonEmptyLevels();
vstorage_.GenerateLevelFilesBrief();
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}));
}
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)
: mem_env_(nullptr),
env_(nullptr),
env_guard_(),
fs_(),
dbname_(test::PerThreadDBPath(name)),
options_(),
db_options_(options_),
cf_options_(options_),
immutable_cf_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>()) {
const char* test_env_uri = getenv("TEST_ENV_URI");
Env* base_env = nullptr;
if (test_env_uri) {
Status s = Env::LoadEnv(test_env_uri, &base_env, &env_guard_);
EXPECT_OK(s);
EXPECT_NE(Env::Default(), base_env);
} else {
base_env = Env::Default();
}
EXPECT_NE(nullptr, base_env);
if (getenv("MEM_ENV")) {
mem_env_ = new MockEnv(base_env);
}
env_ = mem_env_ ? mem_env_ : base_env;
fs_ = std::make_shared<LegacyFileSystemWrapper>(env_);
EXPECT_OK(env_->CreateDirIfMissing(dbname_));
db_options_.env = env_;
db_options_.fs = fs_;
versions_.reset(new VersionSet(dbname_, &db_options_, env_options_,
table_cache_.get(), &write_buffer_manager_,
&write_controller_,
/*block_cache_tracer=*/nullptr));
reactive_versions_ = std::make_shared<ReactiveVersionSet>(
dbname_, &db_options_, env_options_, table_cache_.get(),
&write_buffer_manager_, &write_controller_);
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));
}
if (mem_env_) {
delete mem_env_;
mem_env_ = nullptr;
}
}
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) {
std::unique_ptr<DBImpl> impl(new DBImpl(DBOptions(), 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);
const std::string manifest = DescriptorFileName(dbname_, 1);
std::unique_ptr<WritableFile> file;
Status s = env_->NewWritableFile(
manifest, &file, env_->OptimizeForManifestWrite(env_options_));
ASSERT_OK(s);
std::unique_ptr<WritableFileWriter> file_writer(new WritableFileWriter(
NewLegacyWritableFileWrapper(std::move(file)), manifest, env_options_));
{
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() {
std::vector<ColumnFamilyDescriptor> column_families;
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 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);
}
MockEnv* 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_;
ImmutableCFOptions immutable_cf_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_;
};
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);
}
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(
"VersionSet::ReadAndRecover:RecoveredEdits", [&](void* arg) {
num_recovered_edits_ = *reinterpret_cast<int*>(arg);
});
SyncPoint::GetInstance()->SetCallBack(
"ReactiveVersionSet::ReadAndApply:AppliedEdits",
[&](void* arg) { num_applied_edits_ = *reinterpret_cast<int*>(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;
int num_recovered_edits_ = 0;
int num_applied_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_);
EXPECT_EQ(0, num_applied_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_);
EXPECT_EQ(0, num_applied_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));
AddNewEditsToLog(kAtomicGroupSize);
InstrumentedMutex mu;
std::unordered_set<ColumnFamilyData*> cfds_changed;
mu.Lock();
EXPECT_OK(
reactive_versions_->ReadAndApply(&mu, &manifest_reader, &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(num_initial_edits_, num_recovered_edits_);
EXPECT_EQ(kAtomicGroupSize, num_applied_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_);
EXPECT_EQ(0, num_applied_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, &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_);
EXPECT_EQ(kAtomicGroupSize, num_applied_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());
// 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, &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);
EXPECT_EQ(num_initial_edits_, num_recovered_edits_);
EXPECT_EQ(0, num_applied_edits_);
}
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_OK(
reactive_versions_->ReadAndApply(&mu, &manifest_reader, &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_OK(
reactive_versions_->ReadAndApply(&mu, &manifest_reader, &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);
if (cfd_to_drop->Unref()) {
delete cfd_to_drop;
cfd_to_drop = nullptr;
}
}
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);
std::unique_ptr<WritableFile> file;
const std::string manifest_path = DescriptorFileName(dbname_, 1);
Status s = env_->NewWritableFile(
manifest_path, &file, env_->OptimizeForManifestWrite(env_options_));
ASSERT_OK(s);
std::unique_ptr<WritableFileWriter> file_writer(
new WritableFileWriter(NewLegacyWritableFileWrapper(std::move(file)),
manifest_path, env_options_));
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) {
std::unique_ptr<DBImpl> impl(new DBImpl(DBOptions(), dbname_));
std::string db_id;
impl->GetDbIdentityFromIdentityFile(&db_id);
new_db.SetDBId(db_id);
}
const std::string manifest_path = DescriptorFileName(dbname_, 1);
std::unique_ptr<WritableFile> file;
Status s = env_->NewWritableFile(
manifest_path, &file, env_->OptimizeForManifestWrite(env_options_));
ASSERT_OK(s);
std::unique_ptr<WritableFileWriter> file_writer(
new WritableFileWriter(NewLegacyWritableFileWrapper(std::move(file)),
manifest_path, env_options_));
{
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_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_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_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_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);
std::unique_ptr<WritableFile> file;
Status s = env_->NewWritableFile(
manifest, &file, env_->OptimizeForManifestWrite(env_options_));
ASSERT_OK(s);
std::unique_ptr<WritableFileWriter> file_writer(new WritableFileWriter(
NewLegacyWritableFileWrapper(std::move(file)), manifest, env_options_));
log_writer->reset(new log::Writer(std::move(file_writer), 0, false));
VersionEdit new_db;
if (db_options_.write_dbid_to_manifest) {
std::unique_ptr<DBImpl> impl(new DBImpl(DBOptions(), 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_));
std::vector<std::unique_ptr<IntTblPropCollectorFactory>>
int_tbl_prop_collector_factories;
std::unique_ptr<TableBuilder> builder(table_factory_->NewTableBuilder(
TableBuilderOptions(
immutable_cf_options_, mutable_cf_options_, *internal_comparator_,
&int_tbl_prop_collector_factories, kNoCompression,
/*_sample_for_compression=*/0, CompressionOptions(),
/*_skip_filters=*/false, info.column_family, info.level),
TablePropertiesCollectorFactory::Context::kUnknownColumnFamily,
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);
FileMetaData meta;
meta = FileMetaData(file_num, /*file_path_id=*/0, file_size, ikey, ikey,
0, 0, false, 0, 0, 0, kUnknownFileChecksum,
kUnknownFileChecksumFuncName);
file_metas->emplace_back(meta);
}
}
// 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, 0, 0, 0,
kUnknownFileChecksum, kUnknownFileChecksumFuncName);
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, 0, 0, 0,
kUnknownFileChecksum, kUnknownFileChecksumFuncName);
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());
}
}
}
} // namespace ROCKSDB_NAMESPACE
int main(int argc, char** argv) {
::testing::InitGoogleTest(&argc, argv);
return RUN_ALL_TESTS();
}
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