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rocksdb/monitoring/stats_history_test.cc
Peter Dillinger 6ac1d25fd0 Fix+clean up handling of mock sleeps (#7101) 
Summary:
We have a number of tests hanging on MacOS and windows due to
mishandling of code for mock sleeps. In addition, the code was in
terrible shape because the same variable (addon_time_) would sometimes
refer to microseconds and sometimes to seconds. One test even assumed it
was nanoseconds but was written to pass anyway.

This has been cleaned up so that DB tests generally use a SpecialEnv
function to mock sleep, for either some number of microseconds or seconds
depending on the function called. But to call one of these, the test must first
call SetMockSleep (precondition enforced with assertion), which also turns
sleeps in RocksDB into mock sleeps. To also removes accounting for actual
clock time, call SetTimeElapseOnlySleepOnReopen, which implies
SetMockSleep (on DB re-open). This latter setting only works by applying
on DB re-open, otherwise havoc can ensue if Env goes back in time with
DB open.

More specifics:

Removed some unused test classes, and updated comments on the general
problem.

Fixed DBSSTTest.GetTotalSstFilesSize using a sync point callback instead
of mock time. For this we have the only modification to production code,
inserting a sync point callback in flush_job.cc, which is not a change to
production behavior.

Removed unnecessary resetting of mock times to 0 in many tests. RocksDB
deals in relative time. Any behaviors relying on absolute date/time are likely
a bug. (The above test DBSSTTest.GetTotalSstFilesSize was the only one
clearly injecting a specific absolute time for actual testing convenience.) Just
in case I misunderstood some test, I put this note in each replacement:
// NOTE: Presumed unnecessary and removed: resetting mock time in env

Strengthened some tests like MergeTestTime, MergeCompactionTimeTest, and
FilterCompactionTimeTest in db_test.cc

stats_history_test and blob_db_test are each their own beast, rather deeply
dependent on MockTimeEnv. Each gets its own variant of a work-around for
TimedWait in a mock time environment. (Reduces redundancy and
inconsistency in stats_history_test.)

Intended follow-up:

Remove TimedWait from the public API of InstrumentedCondVar, and only
make that accessible through Env by passing in an InstrumentedCondVar and
a deadline. Then the Env implementations mocking time can fix this problem
without using sync points. (Test infrastructure using sync points interferes
with individual tests' control over sync points.)

With that change, we can simplify/consolidate the scattered work-arounds.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/7101

Test Plan: make check on Linux and MacOS

Reviewed By: zhichao-cao

Differential Revision: D23032815

Pulled By: pdillinger

fbshipit-source-id: 7f33967ada8b83011fb54e8279365c008bd6610b
2020-08-11 12:41:30 -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 <limits>
#include <string>
#include <unordered_map>
#include "db/column_family.h"
#include "db/db_impl/db_impl.h"
#include "db/db_test_util.h"
#include "monitoring/persistent_stats_history.h"
#include "options/options_helper.h"
#include "port/stack_trace.h"
#include "rocksdb/cache.h"
#include "rocksdb/convenience.h"
#include "rocksdb/rate_limiter.h"
#include "rocksdb/stats_history.h"
#include "test_util/sync_point.h"
#include "test_util/testutil.h"
#include "util/random.h"
namespace ROCKSDB_NAMESPACE {
class StatsHistoryTest : public DBTestBase {
public:
StatsHistoryTest() : DBTestBase("/stats_history_test") {}
};
class SafeMockTimeEnv : public MockTimeEnv {
public:
explicit SafeMockTimeEnv(Env* base) : MockTimeEnv(base) {
SyncPoint::GetInstance()->DisableProcessing();
SyncPoint::GetInstance()->ClearAllCallBacks();
#if defined(OS_MACOSX) && !defined(NDEBUG)
// This is an alternate way (vs. SpecialEnv) of dealing with the fact
// that on some platforms, pthread_cond_timedwait does not appear to
// release the lock for other threads to operate if the deadline time
// is already passed. (TimedWait calls are currently a bad abstraction
// because the deadline parameter is usually computed from Env time,
// but is interpreted in real clock time.)
SyncPoint::GetInstance()->SetCallBack(
"InstrumentedCondVar::TimedWaitInternal", [&](void* arg) {
uint64_t time_us = *reinterpret_cast<uint64_t*>(arg);
if (time_us < this->RealNowMicros()) {
*reinterpret_cast<uint64_t*>(arg) = this->RealNowMicros() + 1000;
}
});
#endif // OS_MACOSX && !NDEBUG
SyncPoint::GetInstance()->EnableProcessing();
}
};
#ifndef ROCKSDB_LITE
TEST_F(StatsHistoryTest, RunStatsDumpPeriodSec) {
Options options;
options.create_if_missing = true;
options.stats_dump_period_sec = 5;
std::unique_ptr<SafeMockTimeEnv> mock_env(new SafeMockTimeEnv(env_));
mock_env->set_current_time(0); // in seconds
options.env = mock_env.get();
int counter = 0;
SyncPoint::GetInstance()->SetCallBack("DBImpl::DumpStats:1",
[&](void* /*arg*/) { counter++; });
Reopen(options);
ASSERT_EQ(5u, dbfull()->GetDBOptions().stats_dump_period_sec);
dbfull()->TEST_WaitForDumpStatsRun([&] { mock_env->set_current_time(5); });
ASSERT_GE(counter, 1);
// Test cacel job through SetOptions
ASSERT_OK(dbfull()->SetDBOptions({{"stats_dump_period_sec", "0"}}));
int old_val = counter;
for (int i = 6; i < 20; ++i) {
dbfull()->TEST_WaitForDumpStatsRun([&] { mock_env->set_current_time(i); });
}
ASSERT_EQ(counter, old_val);
Close();
}
// Test persistent stats background thread scheduling and cancelling
TEST_F(StatsHistoryTest, StatsPersistScheduling) {
Options options;
options.create_if_missing = true;
options.stats_persist_period_sec = 5;
std::unique_ptr<SafeMockTimeEnv> mock_env(new SafeMockTimeEnv(env_));
mock_env->set_current_time(0); // in seconds
options.env = mock_env.get();
int counter = 0;
SyncPoint::GetInstance()->SetCallBack("DBImpl::PersistStats:Entry",
[&](void* /*arg*/) { counter++; });
Reopen(options);
ASSERT_EQ(5u, dbfull()->GetDBOptions().stats_persist_period_sec);
dbfull()->TEST_WaitForPersistStatsRun([&] { mock_env->set_current_time(5); });
ASSERT_GE(counter, 1);
// Test cacel job through SetOptions
ASSERT_TRUE(dbfull()->TEST_IsPersistentStatsEnabled());
ASSERT_OK(dbfull()->SetDBOptions({{"stats_persist_period_sec", "0"}}));
ASSERT_FALSE(dbfull()->TEST_IsPersistentStatsEnabled());
Close();
}
// Test enabling persistent stats for the first time
TEST_F(StatsHistoryTest, PersistentStatsFreshInstall) {
Options options;
options.create_if_missing = true;
options.stats_persist_period_sec = 0;
std::unique_ptr<SafeMockTimeEnv> mock_env(new SafeMockTimeEnv(env_));
mock_env->set_current_time(0); // in seconds
options.env = mock_env.get();
int counter = 0;
SyncPoint::GetInstance()->SetCallBack("DBImpl::PersistStats:Entry",
[&](void* /*arg*/) { counter++; });
Reopen(options);
ASSERT_OK(dbfull()->SetDBOptions({{"stats_persist_period_sec", "5"}}));
ASSERT_EQ(5u, dbfull()->GetDBOptions().stats_persist_period_sec);
dbfull()->TEST_WaitForPersistStatsRun([&] { mock_env->set_current_time(5); });
ASSERT_GE(counter, 1);
Close();
}
// TODO(Zhongyi): Move persistent stats related tests to a separate file
TEST_F(StatsHistoryTest, GetStatsHistoryInMemory) {
Options options;
options.create_if_missing = true;
options.stats_persist_period_sec = 5;
options.statistics = CreateDBStatistics();
std::unique_ptr<SafeMockTimeEnv> mock_env(new SafeMockTimeEnv(env_));
mock_env->set_current_time(0); // in seconds
options.env = mock_env.get();
CreateColumnFamilies({"pikachu"}, options);
ASSERT_OK(Put("foo", "bar"));
ReopenWithColumnFamilies({"default", "pikachu"}, options);
int mock_time = 1;
// Wait for stats persist to finish
dbfull()->TEST_WaitForPersistStatsRun([&] { mock_env->set_current_time(5); });
std::unique_ptr<StatsHistoryIterator> stats_iter;
db_->GetStatsHistory(0 /*start_time*/, 6 /*end_time*/, &stats_iter);
ASSERT_TRUE(stats_iter != nullptr);
// disabled stats snapshots
ASSERT_OK(dbfull()->SetDBOptions({{"stats_persist_period_sec", "0"}}));
size_t stats_count = 0;
for (; stats_iter->Valid(); stats_iter->Next()) {
auto stats_map = stats_iter->GetStatsMap();
ASSERT_EQ(stats_iter->GetStatsTime(), 5);
stats_count += stats_map.size();
}
ASSERT_GT(stats_count, 0);
// Wait a bit and verify no more stats are found
for (mock_time = 6; mock_time < 20; ++mock_time) {
dbfull()->TEST_WaitForPersistStatsRun(
[&] { mock_env->set_current_time(mock_time); });
}
db_->GetStatsHistory(0 /*start_time*/, 20 /*end_time*/, &stats_iter);
ASSERT_TRUE(stats_iter != nullptr);
size_t stats_count_new = 0;
for (; stats_iter->Valid(); stats_iter->Next()) {
stats_count_new += stats_iter->GetStatsMap().size();
}
ASSERT_EQ(stats_count_new, stats_count);
Close();
}
TEST_F(StatsHistoryTest, InMemoryStatsHistoryPurging) {
Options options;
options.create_if_missing = true;
options.statistics = CreateDBStatistics();
options.stats_persist_period_sec = 1;
std::unique_ptr<SafeMockTimeEnv> mock_env(new SafeMockTimeEnv(env_));
mock_env->set_current_time(0); // in seconds
options.env = mock_env.get();
CreateColumnFamilies({"pikachu"}, options);
ASSERT_OK(Put("foo", "bar"));
ReopenWithColumnFamilies({"default", "pikachu"}, options);
// some random operation to populate statistics
ASSERT_OK(Delete("foo"));
ASSERT_OK(Put("sol", "sol"));
ASSERT_OK(Put("epic", "epic"));
ASSERT_OK(Put("ltd", "ltd"));
ASSERT_EQ("sol", Get("sol"));
ASSERT_EQ("epic", Get("epic"));
ASSERT_EQ("ltd", Get("ltd"));
Iterator* iterator = db_->NewIterator(ReadOptions());
for (iterator->SeekToFirst(); iterator->Valid(); iterator->Next()) {
ASSERT_TRUE(iterator->key() == iterator->value());
}
delete iterator;
ASSERT_OK(Flush());
ASSERT_OK(Delete("sol"));
db_->CompactRange(CompactRangeOptions(), nullptr, nullptr);
int mock_time = 1;
// Wait for stats persist to finish
for (; mock_time < 5; ++mock_time) {
dbfull()->TEST_WaitForPersistStatsRun(
[&] { mock_env->set_current_time(mock_time); });
}
// second round of ops
ASSERT_OK(Put("saigon", "saigon"));
ASSERT_OK(Put("noodle talk", "noodle talk"));
ASSERT_OK(Put("ping bistro", "ping bistro"));
iterator = db_->NewIterator(ReadOptions());
for (iterator->SeekToFirst(); iterator->Valid(); iterator->Next()) {
ASSERT_TRUE(iterator->key() == iterator->value());
}
delete iterator;
ASSERT_OK(Flush());
db_->CompactRange(CompactRangeOptions(), nullptr, nullptr);
for (; mock_time < 10; ++mock_time) {
dbfull()->TEST_WaitForPersistStatsRun(
[&] { mock_env->set_current_time(mock_time); });
}
std::unique_ptr<StatsHistoryIterator> stats_iter;
db_->GetStatsHistory(0 /*start_time*/, 10 /*end_time*/, &stats_iter);
ASSERT_TRUE(stats_iter != nullptr);
size_t stats_count = 0;
int slice_count = 0;
for (; stats_iter->Valid(); stats_iter->Next()) {
slice_count++;
auto stats_map = stats_iter->GetStatsMap();
stats_count += stats_map.size();
}
size_t stats_history_size = dbfull()->TEST_EstimateInMemoryStatsHistorySize();
ASSERT_GE(slice_count, 9);
ASSERT_GE(stats_history_size, 13000);
// capping memory cost at 13000 bytes since one slice is around 10000~13000
ASSERT_OK(dbfull()->SetDBOptions({{"stats_history_buffer_size", "13000"}}));
ASSERT_EQ(13000, dbfull()->GetDBOptions().stats_history_buffer_size);
// Wait for stats persist to finish
for (; mock_time < 20; ++mock_time) {
dbfull()->TEST_WaitForPersistStatsRun(
[&] { mock_env->set_current_time(mock_time); });
}
db_->GetStatsHistory(0 /*start_time*/, 20 /*end_time*/, &stats_iter);
ASSERT_TRUE(stats_iter != nullptr);
size_t stats_count_reopen = 0;
slice_count = 0;
for (; stats_iter->Valid(); stats_iter->Next()) {
slice_count++;
auto stats_map = stats_iter->GetStatsMap();
stats_count_reopen += stats_map.size();
}
size_t stats_history_size_reopen =
dbfull()->TEST_EstimateInMemoryStatsHistorySize();
// only one slice can fit under the new stats_history_buffer_size
ASSERT_LT(slice_count, 2);
ASSERT_TRUE(stats_history_size_reopen < 13000 &&
stats_history_size_reopen > 0);
ASSERT_TRUE(stats_count_reopen < stats_count && stats_count_reopen > 0);
Close();
// TODO: may also want to verify stats timestamp to make sure we are purging
// the correct stats snapshot
}
int countkeys(Iterator* iter) {
int count = 0;
for (iter->SeekToFirst(); iter->Valid(); iter->Next()) {
count++;
}
return count;
}
TEST_F(StatsHistoryTest, GetStatsHistoryFromDisk) {
Options options;
options.create_if_missing = true;
options.stats_persist_period_sec = 5;
options.statistics = CreateDBStatistics();
options.persist_stats_to_disk = true;
std::unique_ptr<SafeMockTimeEnv> mock_env(new SafeMockTimeEnv(env_));
mock_env->set_current_time(0); // in seconds
options.env = mock_env.get();
CreateColumnFamilies({"pikachu"}, options);
ASSERT_OK(Put("foo", "bar"));
ReopenWithColumnFamilies({"default", "pikachu"}, options);
ASSERT_EQ(Get("foo"), "bar");
// Wait for stats persist to finish
dbfull()->TEST_WaitForPersistStatsRun([&] { mock_env->set_current_time(5); });
auto iter =
db_->NewIterator(ReadOptions(), dbfull()->PersistentStatsColumnFamily());
int key_count1 = countkeys(iter);
delete iter;
dbfull()->TEST_WaitForPersistStatsRun(
[&] { mock_env->set_current_time(10); });
iter =
db_->NewIterator(ReadOptions(), dbfull()->PersistentStatsColumnFamily());
int key_count2 = countkeys(iter);
delete iter;
dbfull()->TEST_WaitForPersistStatsRun(
[&] { mock_env->set_current_time(15); });
iter =
db_->NewIterator(ReadOptions(), dbfull()->PersistentStatsColumnFamily());
int key_count3 = countkeys(iter);
delete iter;
ASSERT_GE(key_count2, key_count1);
ASSERT_GE(key_count3, key_count2);
ASSERT_EQ(key_count3 - key_count2, key_count2 - key_count1);
std::unique_ptr<StatsHistoryIterator> stats_iter;
db_->GetStatsHistory(0 /*start_time*/, 16 /*end_time*/, &stats_iter);
ASSERT_TRUE(stats_iter != nullptr);
size_t stats_count = 0;
int slice_count = 0;
int non_zero_count = 0;
for (int i = 1; stats_iter->Valid(); stats_iter->Next(), i++) {
slice_count++;
auto stats_map = stats_iter->GetStatsMap();
ASSERT_EQ(stats_iter->GetStatsTime(), 5 * i);
for (auto& stat : stats_map) {
if (stat.second != 0) {
non_zero_count++;
}
}
stats_count += stats_map.size();
}
ASSERT_EQ(slice_count, 3);
// 2 extra keys for format version
ASSERT_EQ(stats_count, key_count3 - 2);
// verify reopen will not cause data loss
ReopenWithColumnFamilies({"default", "pikachu"}, options);
db_->GetStatsHistory(0 /*start_time*/, 16 /*end_time*/, &stats_iter);
ASSERT_TRUE(stats_iter != nullptr);
size_t stats_count_reopen = 0;
int slice_count_reopen = 0;
int non_zero_count_recover = 0;
for (; stats_iter->Valid(); stats_iter->Next()) {
slice_count_reopen++;
auto stats_map = stats_iter->GetStatsMap();
for (auto& stat : stats_map) {
if (stat.second != 0) {
non_zero_count_recover++;
}
}
stats_count_reopen += stats_map.size();
}
ASSERT_EQ(non_zero_count, non_zero_count_recover);
ASSERT_EQ(slice_count, slice_count_reopen);
ASSERT_EQ(stats_count, stats_count_reopen);
Close();
}
// Test persisted stats matches the value found in options.statistics and
// the stats value retains after DB reopen
TEST_F(StatsHistoryTest, PersitentStatsVerifyValue) {
Options options;
options.create_if_missing = true;
options.stats_persist_period_sec = 5;
options.statistics = CreateDBStatistics();
options.persist_stats_to_disk = true;
std::unique_ptr<SafeMockTimeEnv> mock_env(new SafeMockTimeEnv(env_));
std::map<std::string, uint64_t> stats_map_before;
ASSERT_TRUE(options.statistics->getTickerMap(&stats_map_before));
mock_env->set_current_time(0); // in seconds
options.env = mock_env.get();
CreateColumnFamilies({"pikachu"}, options);
ASSERT_OK(Put("foo", "bar"));
ReopenWithColumnFamilies({"default", "pikachu"}, options);
ASSERT_EQ(Get("foo"), "bar");
// Wait for stats persist to finish
dbfull()->TEST_WaitForPersistStatsRun([&] { mock_env->set_current_time(5); });
auto iter =
db_->NewIterator(ReadOptions(), dbfull()->PersistentStatsColumnFamily());
countkeys(iter);
delete iter;
dbfull()->TEST_WaitForPersistStatsRun(
[&] { mock_env->set_current_time(10); });
iter =
db_->NewIterator(ReadOptions(), dbfull()->PersistentStatsColumnFamily());
countkeys(iter);
delete iter;
dbfull()->TEST_WaitForPersistStatsRun(
[&] { mock_env->set_current_time(15); });
iter =
db_->NewIterator(ReadOptions(), dbfull()->PersistentStatsColumnFamily());
countkeys(iter);
delete iter;
dbfull()->TEST_WaitForPersistStatsRun(
[&] { mock_env->set_current_time(20); });
std::map<std::string, uint64_t> stats_map_after;
ASSERT_TRUE(options.statistics->getTickerMap(&stats_map_after));
std::unique_ptr<StatsHistoryIterator> stats_iter;
db_->GetStatsHistory(0 /*start_time*/, 21 /*end_time*/, &stats_iter);
ASSERT_TRUE(stats_iter != nullptr);
std::string sample = "rocksdb.num.iterator.deleted";
uint64_t recovered_value = 0;
for (int i = 1; stats_iter->Valid(); stats_iter->Next(), ++i) {
auto stats_map = stats_iter->GetStatsMap();
ASSERT_EQ(stats_iter->GetStatsTime(), 5 * i);
for (const auto& stat : stats_map) {
if (sample.compare(stat.first) == 0) {
recovered_value += stat.second;
}
}
}
ASSERT_EQ(recovered_value, stats_map_after[sample]);
// test stats value retains after recovery
ReopenWithColumnFamilies({"default", "pikachu"}, options);
db_->GetStatsHistory(0 /*start_time*/, 21 /*end_time*/, &stats_iter);
ASSERT_TRUE(stats_iter != nullptr);
uint64_t new_recovered_value = 0;
for (int i = 1; stats_iter->Valid(); stats_iter->Next(), i++) {
auto stats_map = stats_iter->GetStatsMap();
ASSERT_EQ(stats_iter->GetStatsTime(), 5 * i);
for (const auto& stat : stats_map) {
if (sample.compare(stat.first) == 0) {
new_recovered_value += stat.second;
}
}
}
ASSERT_EQ(recovered_value, new_recovered_value);
// TODO(Zhongyi): also add test to read raw values from disk and verify
// correctness
Close();
}
// TODO(Zhongyi): add test for different format versions
TEST_F(StatsHistoryTest, PersistentStatsCreateColumnFamilies) {
Options options;
options.create_if_missing = true;
options.stats_persist_period_sec = 5;
options.statistics = CreateDBStatistics();
options.persist_stats_to_disk = true;
std::unique_ptr<SafeMockTimeEnv> mock_env(new SafeMockTimeEnv(env_));
mock_env->set_current_time(0); // in seconds
options.env = mock_env.get();
ASSERT_OK(TryReopen(options));
CreateColumnFamilies({"one", "two", "three"}, options);
ASSERT_OK(Put(1, "foo", "bar"));
ReopenWithColumnFamilies({"default", "one", "two", "three"}, options);
ASSERT_EQ(Get(2, "foo"), "bar");
CreateColumnFamilies({"four"}, options);
ReopenWithColumnFamilies({"default", "one", "two", "three", "four"}, options);
ASSERT_EQ(Get(2, "foo"), "bar");
dbfull()->TEST_WaitForPersistStatsRun([&] { mock_env->set_current_time(5); });
auto iter =
db_->NewIterator(ReadOptions(), dbfull()->PersistentStatsColumnFamily());
int key_count = countkeys(iter);
delete iter;
ASSERT_GE(key_count, 0);
uint64_t num_write_wal = 0;
std::string sample = "rocksdb.write.wal";
std::unique_ptr<StatsHistoryIterator> stats_iter;
db_->GetStatsHistory(0 /*start_time*/, 5 /*end_time*/, &stats_iter);
ASSERT_TRUE(stats_iter != nullptr);
for (; stats_iter->Valid(); stats_iter->Next()) {
auto stats_map = stats_iter->GetStatsMap();
for (const auto& stat : stats_map) {
if (sample.compare(stat.first) == 0) {
num_write_wal += stat.second;
}
}
}
stats_iter.reset();
ASSERT_EQ(num_write_wal, 2);
options.persist_stats_to_disk = false;
ReopenWithColumnFamilies({"default", "one", "two", "three", "four"}, options);
int cf_count = 0;
for (auto cfd : *dbfull()->versions_->GetColumnFamilySet()) {
(void)cfd;
cf_count++;
}
// persistent stats cf will be implicitly opened even if
// persist_stats_to_disk is false
ASSERT_EQ(cf_count, 6);
ASSERT_EQ(Get(2, "foo"), "bar");
// attempt to create column family using same name, should fail
ColumnFamilyOptions cf_opts(options);
ColumnFamilyHandle* handle;
ASSERT_NOK(db_->CreateColumnFamily(cf_opts, kPersistentStatsColumnFamilyName,
&handle));
options.persist_stats_to_disk = true;
ReopenWithColumnFamilies({"default", "one", "two", "three", "four"}, options);
ASSERT_NOK(db_->CreateColumnFamily(cf_opts, kPersistentStatsColumnFamilyName,
&handle));
// verify stats is not affected by prior failed CF creation
db_->GetStatsHistory(0 /*start_time*/, 5 /*end_time*/, &stats_iter);
ASSERT_TRUE(stats_iter != nullptr);
num_write_wal = 0;
for (; stats_iter->Valid(); stats_iter->Next()) {
auto stats_map = stats_iter->GetStatsMap();
for (const auto& stat : stats_map) {
if (sample.compare(stat.first) == 0) {
num_write_wal += stat.second;
}
}
}
ASSERT_EQ(num_write_wal, 2);
Close();
Destroy(options);
}
TEST_F(StatsHistoryTest, PersistentStatsReadOnly) {
ASSERT_OK(Put("bar", "v2"));
Close();
auto options = CurrentOptions();
options.stats_persist_period_sec = 5;
options.persist_stats_to_disk = true;
assert(options.env == env_);
ASSERT_OK(ReadOnlyReopen(options));
ASSERT_EQ("v2", Get("bar"));
Close();
// Reopen and flush memtable.
ASSERT_OK(TryReopen(options));
Flush();
Close();
// Now check keys in read only mode.
ASSERT_OK(ReadOnlyReopen(options));
}
TEST_F(StatsHistoryTest, ForceManualFlushStatsCF) {
Options options;
options.create_if_missing = true;
options.write_buffer_size = 1024 * 1024 * 10; // 10 Mb
options.stats_persist_period_sec = 5;
options.statistics = CreateDBStatistics();
options.persist_stats_to_disk = true;
std::unique_ptr<SafeMockTimeEnv> mock_env(new SafeMockTimeEnv(env_));
mock_env->set_current_time(0); // in seconds
options.env = mock_env.get();
CreateColumnFamilies({"pikachu"}, options);
ReopenWithColumnFamilies({"default", "pikachu"}, options);
ColumnFamilyData* cfd_default =
static_cast<ColumnFamilyHandleImpl*>(dbfull()->DefaultColumnFamily())
->cfd();
ColumnFamilyData* cfd_stats = static_cast<ColumnFamilyHandleImpl*>(
dbfull()->PersistentStatsColumnFamily())
->cfd();
ColumnFamilyData* cfd_test =
static_cast<ColumnFamilyHandleImpl*>(handles_[1])->cfd();
ASSERT_OK(Put("foo", "v0"));
ASSERT_OK(Put("bar", "v0"));
ASSERT_EQ("v0", Get("bar"));
ASSERT_EQ("v0", Get("foo"));
ASSERT_OK(Put(1, "Eevee", "v0"));
ASSERT_EQ("v0", Get(1, "Eevee"));
dbfull()->TEST_WaitForPersistStatsRun([&] { mock_env->set_current_time(5); });
// writing to all three cf, flush default cf
// LogNumbers: default: 14, stats: 4, pikachu: 4
ASSERT_OK(Flush());
ASSERT_EQ(cfd_stats->GetLogNumber(), cfd_test->GetLogNumber());
ASSERT_LT(cfd_stats->GetLogNumber(), cfd_default->GetLogNumber());
ASSERT_OK(Put("foo1", "v1"));
ASSERT_OK(Put("bar1", "v1"));
ASSERT_EQ("v1", Get("bar1"));
ASSERT_EQ("v1", Get("foo1"));
ASSERT_OK(Put(1, "Vaporeon", "v1"));
ASSERT_EQ("v1", Get(1, "Vaporeon"));
// writing to default and test cf, flush test cf
// LogNumbers: default: 14, stats: 16, pikachu: 16
ASSERT_OK(Flush(1));
ASSERT_EQ(cfd_stats->GetLogNumber(), cfd_test->GetLogNumber());
ASSERT_GT(cfd_stats->GetLogNumber(), cfd_default->GetLogNumber());
ASSERT_OK(Put("foo2", "v2"));
ASSERT_OK(Put("bar2", "v2"));
ASSERT_EQ("v2", Get("bar2"));
ASSERT_EQ("v2", Get("foo2"));
dbfull()->TEST_WaitForPersistStatsRun(
[&] { mock_env->set_current_time(10); });
// writing to default and stats cf, flushing default cf
// LogNumbers: default: 19, stats: 19, pikachu: 19
ASSERT_OK(Flush());
ASSERT_EQ(cfd_stats->GetLogNumber(), cfd_test->GetLogNumber());
ASSERT_EQ(cfd_stats->GetLogNumber(), cfd_default->GetLogNumber());
ASSERT_OK(Put("foo3", "v3"));
ASSERT_OK(Put("bar3", "v3"));
ASSERT_EQ("v3", Get("bar3"));
ASSERT_EQ("v3", Get("foo3"));
ASSERT_OK(Put(1, "Jolteon", "v3"));
ASSERT_EQ("v3", Get(1, "Jolteon"));
dbfull()->TEST_WaitForPersistStatsRun(
[&] { mock_env->set_current_time(15); });
// writing to all three cf, flushing test cf
// LogNumbers: default: 19, stats: 19, pikachu: 22
ASSERT_OK(Flush(1));
ASSERT_LT(cfd_stats->GetLogNumber(), cfd_test->GetLogNumber());
ASSERT_EQ(cfd_stats->GetLogNumber(), cfd_default->GetLogNumber());
Close();
}
#endif // !ROCKSDB_LITE
} // namespace ROCKSDB_NAMESPACE
int main(int argc, char** argv) {
ROCKSDB_NAMESPACE::port::InstallStackTraceHandler();
::testing::InitGoogleTest(&argc, argv);
return RUN_ALL_TESTS();
}
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