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column_family_test.cc
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// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
// This source code is licensed under the BSD-style license found in
// the LICENSE file in the root directory of this source tree. An
// additional grant of patent rights can be found in the PATENTS file
// in the same 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 <algorithm>
#include <vector>
#include <string>
#include <thread>
#include "db/db_impl.h"
#include "db/db_test_util.h"
#include "rocksdb/db.h"
#include "rocksdb/env.h"
#include "rocksdb/iterator.h"
#include "util/coding.h"
#include "util/fault_injection_test_env.h"
#include "util/options_parser.h"
#include "util/string_util.h"
#include "util/sync_point.h"
#include "util/testharness.h"
#include "util/testutil.h"
#include "utilities/merge_operators.h"
namespace rocksdb {
static const int kValueSize = 1000;
namespace {
std::string RandomString(Random* rnd, int len) {
std::string r;
test::RandomString(rnd, len, &r);
return r;
}
} // anonymous namespace
// counts how many operations were performed
class EnvCounter : public EnvWrapper {
public:
explicit EnvCounter(Env* base)
: EnvWrapper(base), num_new_writable_file_(0) {}
int GetNumberOfNewWritableFileCalls() {
return num_new_writable_file_;
}
Status NewWritableFile(const std::string& f, unique_ptr<WritableFile>* r,
const EnvOptions& soptions) override {
++num_new_writable_file_;
return EnvWrapper::NewWritableFile(f, r, soptions);
}
private:
int num_new_writable_file_;
};
class ColumnFamilyTest : public testing::Test {
public:
ColumnFamilyTest() : rnd_(139) {
env_ = new EnvCounter(Env::Default());
dbname_ = test::TmpDir() + "/column_family_test";
db_options_.create_if_missing = true;
db_options_.fail_if_options_file_error = true;
db_options_.env = env_;
DestroyDB(dbname_, Options(db_options_, column_family_options_));
}
~ColumnFamilyTest() {
Close();
rocksdb::SyncPoint::GetInstance()->DisableProcessing();
Destroy();
delete env_;
}
// Return the value to associate with the specified key
Slice Value(int k, std::string* storage) {
if (k == 0) {
// Ugh. Random seed of 0 used to produce no entropy. This code
// preserves the implementation that was in place when all of the
// magic values in this file were picked.
*storage = std::string(kValueSize, ' ');
return Slice(*storage);
} else {
Random r(k);
return test::RandomString(&r, kValueSize, storage);
}
}
void Build(int base, int n, int flush_every = 0) {
std::string key_space, value_space;
WriteBatch batch;
for (int i = 0; i < n; i++) {
if (flush_every != 0 && i != 0 && i % flush_every == 0) {
DBImpl* dbi = reinterpret_cast<DBImpl*>(db_);
dbi->TEST_FlushMemTable();
}
int keyi = base + i;
Slice key(DBTestBase::Key(keyi));
batch.Clear();
batch.Put(handles_[0], key, Value(keyi, &value_space));
batch.Put(handles_[1], key, Value(keyi, &value_space));
batch.Put(handles_[2], key, Value(keyi, &value_space));
ASSERT_OK(db_->Write(WriteOptions(), &batch));
}
}
void CheckMissed() {
uint64_t next_expected = 0;
uint64_t missed = 0;
int bad_keys = 0;
int bad_values = 0;
int correct = 0;
std::string value_space;
for (int cf = 0; cf < 3; cf++) {
next_expected = 0;
Iterator* iter = db_->NewIterator(ReadOptions(false, true), handles_[cf]);
for (iter->SeekToFirst(); iter->Valid(); iter->Next()) {
uint64_t key;
Slice in(iter->key());
in.remove_prefix(3);
if (!ConsumeDecimalNumber(&in, &key) || !in.empty() ||
key < next_expected) {
bad_keys++;
continue;
}
missed += (key - next_expected);
next_expected = key + 1;
if (iter->value() != Value(static_cast<int>(key), &value_space)) {
bad_values++;
} else {
correct++;
}
}
delete iter;
}
ASSERT_EQ(0, bad_keys);
ASSERT_EQ(0, bad_values);
ASSERT_EQ(0, missed);
(void)correct;
}
void Close() {
for (auto h : handles_) {
if (h) {
db_->DestroyColumnFamilyHandle(h);
}
}
handles_.clear();
names_.clear();
delete db_;
db_ = nullptr;
}
Status TryOpen(std::vector<std::string> cf,
std::vector<ColumnFamilyOptions> options = {}) {
std::vector<ColumnFamilyDescriptor> column_families;
names_.clear();
for (size_t i = 0; i < cf.size(); ++i) {
column_families.push_back(ColumnFamilyDescriptor(
cf[i], options.size() == 0 ? column_family_options_ : options[i]));
names_.push_back(cf[i]);
}
return DB::Open(db_options_, dbname_, column_families, &handles_, &db_);
}
Status OpenReadOnly(std::vector<std::string> cf,
std::vector<ColumnFamilyOptions> options = {}) {
std::vector<ColumnFamilyDescriptor> column_families;
names_.clear();
for (size_t i = 0; i < cf.size(); ++i) {
column_families.push_back(ColumnFamilyDescriptor(
cf[i], options.size() == 0 ? column_family_options_ : options[i]));
names_.push_back(cf[i]);
}
return DB::OpenForReadOnly(db_options_, dbname_, column_families, &handles_,
&db_);
}
#ifndef ROCKSDB_LITE // ReadOnlyDB is not supported
void AssertOpenReadOnly(std::vector<std::string> cf,
std::vector<ColumnFamilyOptions> options = {}) {
ASSERT_OK(OpenReadOnly(cf, options));
}
#endif // !ROCKSDB_LITE
void Open(std::vector<std::string> cf,
std::vector<ColumnFamilyOptions> options = {}) {
ASSERT_OK(TryOpen(cf, options));
}
void Open() {
Open({"default"});
}
DBImpl* dbfull() { return reinterpret_cast<DBImpl*>(db_); }
int GetProperty(int cf, std::string property) {
std::string value;
EXPECT_TRUE(dbfull()->GetProperty(handles_[cf], property, &value));
#ifndef CYGWIN
return std::stoi(value);
#else
return std::strtol(value.c_str(), 0 /* off */, 10 /* base */);
#endif
}
void Destroy() {
Close();
ASSERT_OK(DestroyDB(dbname_, Options(db_options_, column_family_options_)));
}
void CreateColumnFamilies(
const std::vector<std::string>& cfs,
const std::vector<ColumnFamilyOptions> options = {}) {
int cfi = static_cast<int>(handles_.size());
handles_.resize(cfi + cfs.size());
names_.resize(cfi + cfs.size());
for (size_t i = 0; i < cfs.size(); ++i) {
const auto& current_cf_opt =
options.size() == 0 ? column_family_options_ : options[i];
ASSERT_OK(
db_->CreateColumnFamily(current_cf_opt, cfs[i], &handles_[cfi]));
names_[cfi] = cfs[i];
#ifndef ROCKSDB_LITE // RocksDBLite does not support GetDescriptor
// Verify the CF options of the returned CF handle.
ColumnFamilyDescriptor desc;
ASSERT_OK(handles_[cfi]->GetDescriptor(&desc));
RocksDBOptionsParser::VerifyCFOptions(desc.options, current_cf_opt);
#endif // !ROCKSDB_LITE
cfi++;
}
}
void Reopen(const std::vector<ColumnFamilyOptions> options = {}) {
std::vector<std::string> names;
for (auto name : names_) {
if (name != "") {
names.push_back(name);
}
}
Close();
assert(options.size() == 0 || names.size() == options.size());
Open(names, options);
}
void CreateColumnFamiliesAndReopen(const std::vector<std::string>& cfs) {
CreateColumnFamilies(cfs);
Reopen();
}
void DropColumnFamilies(const std::vector<int>& cfs) {
for (auto cf : cfs) {
ASSERT_OK(db_->DropColumnFamily(handles_[cf]));
db_->DestroyColumnFamilyHandle(handles_[cf]);
handles_[cf] = nullptr;
names_[cf] = "";
}
}
void PutRandomData(int cf, int num, int key_value_size, bool save = false) {
for (int i = 0; i < num; ++i) {
// 10 bytes for key, rest is value
if (!save) {
ASSERT_OK(Put(cf, test::RandomKey(&rnd_, 11),
RandomString(&rnd_, key_value_size - 10)));
} else {
std::string key = test::RandomKey(&rnd_, 11);
keys_.insert(key);
ASSERT_OK(Put(cf, key, RandomString(&rnd_, key_value_size - 10)));
}
}
}
#ifndef ROCKSDB_LITE // TEST functions in DB are not supported in lite
void WaitForFlush(int cf) {
ASSERT_OK(dbfull()->TEST_WaitForFlushMemTable(handles_[cf]));
}
void WaitForCompaction() {
ASSERT_OK(dbfull()->TEST_WaitForCompact());
}
uint64_t MaxTotalInMemoryState() {
return dbfull()->TEST_MaxTotalInMemoryState();
}
void AssertMaxTotalInMemoryState(uint64_t value) {
ASSERT_EQ(value, MaxTotalInMemoryState());
}
#endif // !ROCKSDB_LITE
Status Put(int cf, const std::string& key, const std::string& value) {
return db_->Put(WriteOptions(), handles_[cf], Slice(key), Slice(value));
}
Status Merge(int cf, const std::string& key, const std::string& value) {
return db_->Merge(WriteOptions(), handles_[cf], Slice(key), Slice(value));
}
Status Flush(int cf) {
return db_->Flush(FlushOptions(), handles_[cf]);
}
std::string Get(int cf, const std::string& key) {
ReadOptions options;
options.verify_checksums = true;
std::string result;
Status s = db_->Get(options, handles_[cf], Slice(key), &result);
if (s.IsNotFound()) {
result = "NOT_FOUND";
} else if (!s.ok()) {
result = s.ToString();
}
return result;
}
void CompactAll(int cf) {
ASSERT_OK(db_->CompactRange(CompactRangeOptions(), handles_[cf], nullptr,
nullptr));
}
void Compact(int cf, const Slice& start, const Slice& limit) {
ASSERT_OK(
db_->CompactRange(CompactRangeOptions(), handles_[cf], &start, &limit));
}
int NumTableFilesAtLevel(int level, int cf) {
return GetProperty(cf,
"rocksdb.num-files-at-level" + ToString(level));
}
#ifndef ROCKSDB_LITE
// Return spread of files per level
std::string FilesPerLevel(int cf) {
std::string result;
int last_non_zero_offset = 0;
for (int level = 0; level < dbfull()->NumberLevels(handles_[cf]); level++) {
int f = NumTableFilesAtLevel(level, cf);
char buf[100];
snprintf(buf, sizeof(buf), "%s%d", (level ? "," : ""), f);
result += buf;
if (f > 0) {
last_non_zero_offset = static_cast<int>(result.size());
}
}
result.resize(last_non_zero_offset);
return result;
}
#endif
void AssertFilesPerLevel(const std::string& value, int cf) {
#ifndef ROCKSDB_LITE
ASSERT_EQ(value, FilesPerLevel(cf));
#endif
}
#ifndef ROCKSDB_LITE // GetLiveFilesMetaData is not supported
int CountLiveFiles() {
std::vector<LiveFileMetaData> metadata;
db_->GetLiveFilesMetaData(&metadata);
return static_cast<int>(metadata.size());
}
#endif // !ROCKSDB_LITE
void AssertCountLiveFiles(int expected_value) {
#ifndef ROCKSDB_LITE
ASSERT_EQ(expected_value, CountLiveFiles());
#endif
}
// Do n memtable flushes, each of which produces an sstable
// covering the range [small,large].
void MakeTables(int cf, int n, const std::string& small,
const std::string& large) {
for (int i = 0; i < n; i++) {
ASSERT_OK(Put(cf, small, "begin"));
ASSERT_OK(Put(cf, large, "end"));
ASSERT_OK(db_->Flush(FlushOptions(), handles_[cf]));
}
}
#ifndef ROCKSDB_LITE // GetSortedWalFiles is not supported
int CountLiveLogFiles() {
int micros_wait_for_log_deletion = 20000;
env_->SleepForMicroseconds(micros_wait_for_log_deletion);
int ret = 0;
VectorLogPtr wal_files;
Status s;
// GetSortedWalFiles is a flakey function -- it gets all the wal_dir
// children files and then later checks for their existence. if some of the
// log files doesn't exist anymore, it reports an error. it does all of this
// without DB mutex held, so if a background process deletes the log file
// while the function is being executed, it returns an error. We retry the
// function 10 times to avoid the error failing the test
for (int retries = 0; retries < 10; ++retries) {
wal_files.clear();
s = db_->GetSortedWalFiles(wal_files);
if (s.ok()) {
break;
}
}
EXPECT_OK(s);
for (const auto& wal : wal_files) {
if (wal->Type() == kAliveLogFile) {
++ret;
}
}
return ret;
return 0;
}
#endif // !ROCKSDB_LITE
void AssertCountLiveLogFiles(int value) {
#ifndef ROCKSDB_LITE // GetSortedWalFiles is not supported
ASSERT_EQ(value, CountLiveLogFiles());
#endif // !ROCKSDB_LITE
}
void AssertNumberOfImmutableMemtables(std::vector<int> num_per_cf) {
assert(num_per_cf.size() == handles_.size());
#ifndef ROCKSDB_LITE // GetProperty is not supported in lite
for (size_t i = 0; i < num_per_cf.size(); ++i) {
ASSERT_EQ(num_per_cf[i], GetProperty(static_cast<int>(i),
"rocksdb.num-immutable-mem-table"));
}
#endif // !ROCKSDB_LITE
}
void CopyFile(const std::string& source, const std::string& destination,
uint64_t size = 0) {
const EnvOptions soptions;
unique_ptr<SequentialFile> srcfile;
ASSERT_OK(env_->NewSequentialFile(source, &srcfile, soptions));
unique_ptr<WritableFile> destfile;
ASSERT_OK(env_->NewWritableFile(destination, &destfile, soptions));
if (size == 0) {
// default argument means copy everything
ASSERT_OK(env_->GetFileSize(source, &size));
}
char buffer[4096];
Slice slice;
while (size > 0) {
uint64_t one = std::min(uint64_t(sizeof(buffer)), size);
ASSERT_OK(srcfile->Read(one, &slice, buffer));
ASSERT_OK(destfile->Append(slice));
size -= slice.size();
}
ASSERT_OK(destfile->Close());
}
std::vector<ColumnFamilyHandle*> handles_;
std::vector<std::string> names_;
std::set<std::string> keys_;
ColumnFamilyOptions column_family_options_;
DBOptions db_options_;
std::string dbname_;
DB* db_ = nullptr;
EnvCounter* env_;
Random rnd_;
};
TEST_F(ColumnFamilyTest, DontReuseColumnFamilyID) {
for (int iter = 0; iter < 3; ++iter) {
Open();
CreateColumnFamilies({"one", "two", "three"});
for (size_t i = 0; i < handles_.size(); ++i) {
auto cfh = reinterpret_cast<ColumnFamilyHandleImpl*>(handles_[i]);
ASSERT_EQ(i, cfh->GetID());
}
if (iter == 1) {
Reopen();
}
DropColumnFamilies({3});
Reopen();
if (iter == 2) {
// this tests if max_column_family is correctly persisted with
// WriteSnapshot()
Reopen();
}
CreateColumnFamilies({"three2"});
// ID 3 that was used for dropped column family "three" should not be reused
auto cfh3 = reinterpret_cast<ColumnFamilyHandleImpl*>(handles_[3]);
ASSERT_EQ(4U, cfh3->GetID());
Close();
Destroy();
}
}
class FlushEmptyCFTestWithParam : public ColumnFamilyTest,
public testing::WithParamInterface<bool> {
public:
FlushEmptyCFTestWithParam() { allow_2pc_ = GetParam(); }
// Required if inheriting from testing::WithParamInterface<>
static void SetUpTestCase() {}
static void TearDownTestCase() {}
bool allow_2pc_;
};
TEST_P(FlushEmptyCFTestWithParam, FlushEmptyCFTest) {
std::unique_ptr<FaultInjectionTestEnv> fault_env(
new FaultInjectionTestEnv(env_));
db_options_.env = fault_env.get();
db_options_.allow_2pc = allow_2pc_;
Open();
CreateColumnFamilies({"one", "two"});
// Generate log file A.
ASSERT_OK(Put(1, "foo", "v1")); // seqID 1
Reopen();
// Log file A is not dropped after reopening because default column family's
// min log number is 0.
// It flushes to SST file X
ASSERT_OK(Put(1, "foo", "v1")); // seqID 2
ASSERT_OK(Put(1, "bar", "v2")); // seqID 3
// Current log file is file B now. While flushing, a new log file C is created
// and is set to current. Boths' min log number is set to file C in memory, so
// after flushing file B is deleted. At the same time, the min log number of
// default CF is not written to manifest. Log file A still remains.
// Flushed to SST file Y.
Flush(1);
Flush(0);
ASSERT_OK(Put(1, "bar", "v3")); // seqID 4
ASSERT_OK(Put(1, "foo", "v4")); // seqID 5
// Preserve file system state up to here to simulate a crash condition.
fault_env->SetFilesystemActive(false);
std::vector<std::string> names;
for (auto name : names_) {
if (name != "") {
names.push_back(name);
}
}
Close();
fault_env->ResetState();
// Before opening, there are four files:
// Log file A contains seqID 1
// Log file C contains seqID 4, 5
// SST file X contains seqID 1
// SST file Y contains seqID 2, 3
// Min log number:
// default CF: 0
// CF one, two: C
// When opening the DB, all the seqID should be preserved.
Open(names, {});
ASSERT_EQ("v4", Get(1, "foo"));
ASSERT_EQ("v3", Get(1, "bar"));
Close();
db_options_.env = env_;
}
TEST_P(FlushEmptyCFTestWithParam, FlushEmptyCFTest2) {
std::unique_ptr<FaultInjectionTestEnv> fault_env(
new FaultInjectionTestEnv(env_));
db_options_.env = fault_env.get();
db_options_.allow_2pc = allow_2pc_;
Open();
CreateColumnFamilies({"one", "two"});
// Generate log file A.
ASSERT_OK(Put(1, "foo", "v1")); // seqID 1
Reopen();
// Log file A is not dropped after reopening because default column family's
// min log number is 0.
// It flushes to SST file X
ASSERT_OK(Put(1, "foo", "v1")); // seqID 2
ASSERT_OK(Put(1, "bar", "v2")); // seqID 3
// Current log file is file B now. While flushing, a new log file C is created
// and is set to current. Both CFs' min log number is set to file C so after
// flushing file B is deleted. Log file A still remains.
// Flushed to SST file Y.
Flush(1);
ASSERT_OK(Put(0, "bar", "v2")); // seqID 4
ASSERT_OK(Put(2, "bar", "v2")); // seqID 5
ASSERT_OK(Put(1, "bar", "v3")); // seqID 6
// Flushing all column families. This forces all CFs' min log to current. This
// is written to the manifest file. Log file C is cleared.
Flush(0);
Flush(1);
Flush(2);
// Write to log file D
ASSERT_OK(Put(1, "bar", "v4")); // seqID 7
ASSERT_OK(Put(1, "bar", "v5")); // seqID 8
// Preserve file system state up to here to simulate a crash condition.
fault_env->SetFilesystemActive(false);
std::vector<std::string> names;
for (auto name : names_) {
if (name != "") {
names.push_back(name);
}
}
Close();
fault_env->ResetState();
// Before opening, there are two logfiles:
// Log file A contains seqID 1
// Log file D contains seqID 7, 8
// Min log number:
// default CF: D
// CF one, two: D
// When opening the DB, log file D should be replayed using the seqID
// specified in the file.
Open(names, {});
ASSERT_EQ("v1", Get(1, "foo"));
ASSERT_EQ("v5", Get(1, "bar"));
Close();
db_options_.env = env_;
}
INSTANTIATE_TEST_CASE_P(FlushEmptyCFTestWithParam, FlushEmptyCFTestWithParam,
::testing::Bool());
TEST_F(ColumnFamilyTest, AddDrop) {
Open();
CreateColumnFamilies({"one", "two", "three"});
ASSERT_EQ("NOT_FOUND", Get(1, "fodor"));
ASSERT_EQ("NOT_FOUND", Get(2, "fodor"));
DropColumnFamilies({2});
ASSERT_EQ("NOT_FOUND", Get(1, "fodor"));
CreateColumnFamilies({"four"});
ASSERT_EQ("NOT_FOUND", Get(3, "fodor"));
ASSERT_OK(Put(1, "fodor", "mirko"));
ASSERT_EQ("mirko", Get(1, "fodor"));
ASSERT_EQ("NOT_FOUND", Get(3, "fodor"));
Close();
ASSERT_TRUE(TryOpen({"default"}).IsInvalidArgument());
Open({"default", "one", "three", "four"});
DropColumnFamilies({1});
Reopen();
Close();
std::vector<std::string> families;
ASSERT_OK(DB::ListColumnFamilies(db_options_, dbname_, &families));
std::sort(families.begin(), families.end());
ASSERT_TRUE(families ==
std::vector<std::string>({"default", "four", "three"}));
}
TEST_F(ColumnFamilyTest, DropTest) {
// first iteration - dont reopen DB before dropping
// second iteration - reopen DB before dropping
for (int iter = 0; iter < 2; ++iter) {
Open({"default"});
CreateColumnFamiliesAndReopen({"pikachu"});
for (int i = 0; i < 100; ++i) {
ASSERT_OK(Put(1, ToString(i), "bar" + ToString(i)));
}
ASSERT_OK(Flush(1));
if (iter == 1) {
Reopen();
}
ASSERT_EQ("bar1", Get(1, "1"));
AssertCountLiveFiles(1);
DropColumnFamilies({1});
// make sure that all files are deleted when we drop the column family
AssertCountLiveFiles(0);
Destroy();
}
}
TEST_F(ColumnFamilyTest, WriteBatchFailure) {
Open();
CreateColumnFamiliesAndReopen({"one", "two"});
WriteBatch batch;
batch.Put(handles_[0], Slice("existing"), Slice("column-family"));
batch.Put(handles_[1], Slice("non-existing"), Slice("column-family"));
ASSERT_OK(db_->Write(WriteOptions(), &batch));
DropColumnFamilies({1});
WriteOptions woptions_ignore_missing_cf;
woptions_ignore_missing_cf.ignore_missing_column_families = true;
batch.Put(handles_[0], Slice("still here"), Slice("column-family"));
ASSERT_OK(db_->Write(woptions_ignore_missing_cf, &batch));
ASSERT_EQ("column-family", Get(0, "still here"));
Status s = db_->Write(WriteOptions(), &batch);
ASSERT_TRUE(s.IsInvalidArgument());
Close();
}
TEST_F(ColumnFamilyTest, ReadWrite) {
Open();
CreateColumnFamiliesAndReopen({"one", "two"});
ASSERT_OK(Put(0, "foo", "v1"));
ASSERT_OK(Put(0, "bar", "v2"));
ASSERT_OK(Put(1, "mirko", "v3"));
ASSERT_OK(Put(0, "foo", "v2"));
ASSERT_OK(Put(2, "fodor", "v5"));
for (int iter = 0; iter <= 3; ++iter) {
ASSERT_EQ("v2", Get(0, "foo"));
ASSERT_EQ("v2", Get(0, "bar"));
ASSERT_EQ("v3", Get(1, "mirko"));
ASSERT_EQ("v5", Get(2, "fodor"));
ASSERT_EQ("NOT_FOUND", Get(0, "fodor"));
ASSERT_EQ("NOT_FOUND", Get(1, "fodor"));
ASSERT_EQ("NOT_FOUND", Get(2, "foo"));
if (iter <= 1) {
Reopen();
}
}
Close();
}
TEST_F(ColumnFamilyTest, IgnoreRecoveredLog) {
std::string backup_logs = dbname_ + "/backup_logs";
// delete old files in backup_logs directory
ASSERT_OK(env_->CreateDirIfMissing(dbname_));
ASSERT_OK(env_->CreateDirIfMissing(backup_logs));
std::vector<std::string> old_files;
env_->GetChildren(backup_logs, &old_files);
for (auto& file : old_files) {
if (file != "." && file != "..") {
env_->DeleteFile(backup_logs + "/" + file);
}
}
column_family_options_.merge_operator =
MergeOperators::CreateUInt64AddOperator();
db_options_.wal_dir = dbname_ + "/logs";
Destroy();
Open();
CreateColumnFamilies({"cf1", "cf2"});
// fill up the DB
std::string one, two, three;
PutFixed64(&one, 1);
PutFixed64(&two, 2);
PutFixed64(&three, 3);
ASSERT_OK(Merge(0, "foo", one));
ASSERT_OK(Merge(1, "mirko", one));
ASSERT_OK(Merge(0, "foo", one));
ASSERT_OK(Merge(2, "bla", one));
ASSERT_OK(Merge(2, "fodor", one));
ASSERT_OK(Merge(0, "bar", one));
ASSERT_OK(Merge(2, "bla", one));
ASSERT_OK(Merge(1, "mirko", two));
ASSERT_OK(Merge(1, "franjo", one));
// copy the logs to backup
std::vector<std::string> logs;
env_->GetChildren(db_options_.wal_dir, &logs);
for (auto& log : logs) {
if (log != ".." && log != ".") {
CopyFile(db_options_.wal_dir + "/" + log, backup_logs + "/" + log);
}
}
// recover the DB
Close();
// 1. check consistency
// 2. copy the logs from backup back to WAL dir. if the recovery happens
// again on the same log files, this should lead to incorrect results
// due to applying merge operator twice
// 3. check consistency
for (int iter = 0; iter < 2; ++iter) {
// assert consistency
Open({"default", "cf1", "cf2"});
ASSERT_EQ(two, Get(0, "foo"));
ASSERT_EQ(one, Get(0, "bar"));
ASSERT_EQ(three, Get(1, "mirko"));
ASSERT_EQ(one, Get(1, "franjo"));
ASSERT_EQ(one, Get(2, "fodor"));
ASSERT_EQ(two, Get(2, "bla"));
Close();
if (iter == 0) {
// copy the logs from backup back to wal dir
for (auto& log : logs) {
if (log != ".." && log != ".") {
CopyFile(backup_logs + "/" + log, db_options_.wal_dir + "/" + log);
}
}
}
}
}
#ifndef ROCKSDB_LITE // TEST functions used are not supported
TEST_F(ColumnFamilyTest, FlushTest) {
Open();
CreateColumnFamiliesAndReopen({"one", "two"});
ASSERT_OK(Put(0, "foo", "v1"));
ASSERT_OK(Put(0, "bar", "v2"));
ASSERT_OK(Put(1, "mirko", "v3"));
ASSERT_OK(Put(0, "foo", "v2"));
ASSERT_OK(Put(2, "fodor", "v5"));
for (int j = 0; j < 2; j++) {
ReadOptions ro;
std::vector<Iterator*> iterators;
// Hold super version.
if (j == 0) {
ASSERT_OK(db_->NewIterators(ro, handles_, &iterators));
}
for (int i = 0; i < 3; ++i) {
uint64_t max_total_in_memory_state =
MaxTotalInMemoryState();
Flush(i);
AssertMaxTotalInMemoryState(max_total_in_memory_state);
}
ASSERT_OK(Put(1, "foofoo", "bar"));
ASSERT_OK(Put(0, "foofoo", "bar"));
for (auto* it : iterators) {
delete it;
}
}
Reopen();
for (int iter = 0; iter <= 2; ++iter) {
ASSERT_EQ("v2", Get(0, "foo"));
ASSERT_EQ("v2", Get(0, "bar"));
ASSERT_EQ("v3", Get(1, "mirko"));
ASSERT_EQ("v5", Get(2, "fodor"));
ASSERT_EQ("NOT_FOUND", Get(0, "fodor"));
ASSERT_EQ("NOT_FOUND", Get(1, "fodor"));
ASSERT_EQ("NOT_FOUND", Get(2, "foo"));
if (iter <= 1) {
Reopen();
}
}
Close();
}
// Makes sure that obsolete log files get deleted
TEST_F(ColumnFamilyTest, LogDeletionTest) {
db_options_.max_total_wal_size = std::numeric_limits<uint64_t>::max();
column_family_options_.arena_block_size = 4 * 1024;
column_family_options_.write_buffer_size = 100000; // 100KB
Open();
CreateColumnFamilies({"one", "two", "three", "four"});
// Each bracket is one log file. if number is in (), it means
// we don't need it anymore (it's been flushed)
// []
AssertCountLiveLogFiles(0);
PutRandomData(0, 1, 100);
// [0]
PutRandomData(1, 1, 100);
// [0, 1]
PutRandomData(1, 1000, 100);
WaitForFlush(1);
// [0, (1)] [1]
AssertCountLiveLogFiles(2);
PutRandomData(0, 1, 100);
// [0, (1)] [0, 1]
AssertCountLiveLogFiles(2);
PutRandomData(2, 1, 100);
// [0, (1)] [0, 1, 2]
PutRandomData(2, 1000, 100);
WaitForFlush(2);
// [0, (1)] [0, 1, (2)] [2]
AssertCountLiveLogFiles(3);
PutRandomData(2, 1000, 100);
WaitForFlush(2);
// [0, (1)] [0, 1, (2)] [(2)] [2]
AssertCountLiveLogFiles(4);
PutRandomData(3, 1, 100);
// [0, (1)] [0, 1, (2)] [(2)] [2, 3]
PutRandomData(1, 1, 100);
// [0, (1)] [0, 1, (2)] [(2)] [1, 2, 3]
AssertCountLiveLogFiles(4);
PutRandomData(1, 1000, 100);
WaitForFlush(1);
// [0, (1)] [0, (1), (2)] [(2)] [(1), 2, 3] [1]
AssertCountLiveLogFiles(5);
PutRandomData(0, 1000, 100);
WaitForFlush(0);
// [(0), (1)] [(0), (1), (2)] [(2)] [(1), 2, 3] [1, (0)] [0]
// delete obsolete logs -->
// [(1), 2, 3] [1, (0)] [0]
AssertCountLiveLogFiles(3);
PutRandomData(0, 1000, 100);
WaitForFlush(0);
// [(1), 2, 3] [1, (0)], [(0)] [0]
AssertCountLiveLogFiles(4);
PutRandomData(1, 1000, 100);
WaitForFlush(1);
// [(1), 2, 3] [(1), (0)] [(0)] [0, (1)] [1]
AssertCountLiveLogFiles(5);
PutRandomData(2, 1000, 100);
WaitForFlush(2);
// [(1), (2), 3] [(1), (0)] [(0)] [0, (1)] [1, (2)], [2]
AssertCountLiveLogFiles(6);
PutRandomData(3, 1000, 100);
WaitForFlush(3);
// [(1), (2), (3)] [(1), (0)] [(0)] [0, (1)] [1, (2)], [2, (3)] [3]
// delete obsolete logs -->
// [0, (1)] [1, (2)], [2, (3)] [3]
AssertCountLiveLogFiles(4);
Close();
}
#endif // !ROCKSDB_LITE
TEST_F(ColumnFamilyTest, CrashAfterFlush) {
std::unique_ptr<FaultInjectionTestEnv> fault_env(
new FaultInjectionTestEnv(env_));
db_options_.env = fault_env.get();
Open();
CreateColumnFamilies({"one"});
WriteBatch batch;
batch.Put(handles_[0], Slice("foo"), Slice("bar"));
batch.Put(handles_[1], Slice("foo"), Slice("bar"));
ASSERT_OK(db_->Write(WriteOptions(), &batch));
Flush(0);
fault_env->SetFilesystemActive(false);
std::vector<std::string> names;
for (auto name : names_) {
if (name != "") {
names.push_back(name);
}
}
Close();
fault_env->DropUnsyncedFileData();
fault_env->ResetState();
Open(names, {});
// Write batch should be atomic.
ASSERT_EQ(Get(0, "foo"), Get(1, "foo"));
Close();
db_options_.env = env_;
}
#ifndef ROCKSDB_LITE // WaitForFlush() is not supported
// Makes sure that obsolete log files get deleted
TEST_F(ColumnFamilyTest, DifferentWriteBufferSizes) {
// disable flushing stale column families
db_options_.max_total_wal_size = std::numeric_limits<uint64_t>::max();
Open();
CreateColumnFamilies({"one", "two", "three"});
ColumnFamilyOptions default_cf, one, two, three;
// setup options. all column families have max_write_buffer_number setup to 10
// "default" -> 100KB memtable, start flushing immediatelly
// "one" -> 200KB memtable, start flushing with two immutable memtables
// "two" -> 1MB memtable, start flushing with three immutable memtables
// "three" -> 90KB memtable, start flushing with four immutable memtables
default_cf.write_buffer_size = 100000;
default_cf.arena_block_size = 4 * 4096;
default_cf.max_write_buffer_number = 10;
default_cf.min_write_buffer_number_to_merge = 1;
default_cf.max_write_buffer_number_to_maintain = 0;
one.write_buffer_size = 200000;
one.arena_block_size = 4 * 4096;
one.max_write_buffer_number = 10;
one.min_write_buffer_number_to_merge = 2;
one.max_write_buffer_number_to_maintain = 1;
two.write_buffer_size = 1000000;
two.arena_block_size = 4 * 4096;
two.max_write_buffer_number = 10;
two.min_write_buffer_number_to_merge = 3;
two.max_write_buffer_number_to_maintain = 2;
three.write_buffer_size = 4096 * 22;
three.arena_block_size = 4096;
three.max_write_buffer_number = 10;
three.min_write_buffer_number_to_merge = 4;
three.max_write_buffer_number_to_maintain = -1;
Reopen({default_cf, one, two, three});
int micros_wait_for_flush = 10000;
PutRandomData(0, 100, 1000);
WaitForFlush(0);
AssertNumberOfImmutableMemtables({0, 0, 0, 0});
AssertCountLiveLogFiles(1);
PutRandomData(1, 200, 1000);
env_->SleepForMicroseconds(micros_wait_for_flush);
AssertNumberOfImmutableMemtables({0, 1, 0, 0});
AssertCountLiveLogFiles(2);
PutRandomData(2, 1000, 1000);
env_->SleepForMicroseconds(micros_wait_for_flush);
AssertNumberOfImmutableMemtables({0, 1, 1, 0});
AssertCountLiveLogFiles(3);
PutRandomData(2, 1000, 1000);
env_->SleepForMicroseconds(micros_wait_for_flush);
AssertNumberOfImmutableMemtables({0, 1, 2, 0});
AssertCountLiveLogFiles(4);
PutRandomData(3, 93, 990);
env_->SleepForMicroseconds(micros_wait_for_flush);
AssertNumberOfImmutableMemtables({0, 1, 2, 1});
AssertCountLiveLogFiles(5);