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rocksdb/monitoring/stats_history_test.cc

576 lines
21 KiB

// 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 {
class StatsHistoryTest : public DBTestBase {
public:
StatsHistoryTest() : DBTestBase("/stats_history_test") {}
};
TEST_F(StatsHistoryTest, RunStatsDumpPeriodSec) {
Options options;
options.create_if_missing = true;
options.stats_dump_period_sec = 5;
std::unique_ptr<rocksdb::MockTimeEnv> mock_env;
mock_env.reset(new rocksdb::MockTimeEnv(env_));
mock_env->set_current_time(0); // in seconds
options.env = mock_env.get();
int counter = 0;
rocksdb::SyncPoint::GetInstance()->DisableProcessing();
rocksdb::SyncPoint::GetInstance()->ClearAllCallBacks();
#if defined(OS_MACOSX) && !defined(NDEBUG)
rocksdb::SyncPoint::GetInstance()->SetCallBack(
"InstrumentedCondVar::TimedWaitInternal", [&](void* arg) {
uint64_t time_us = *reinterpret_cast<uint64_t*>(arg);
if (time_us < mock_env->RealNowMicros()) {
*reinterpret_cast<uint64_t*>(arg) = mock_env->RealNowMicros() + 1000;
}
});
#endif // OS_MACOSX && !NDEBUG
rocksdb::SyncPoint::GetInstance()->SetCallBack(
"DBImpl::DumpStats:1", [&](void* /*arg*/) { counter++; });
rocksdb::SyncPoint::GetInstance()->EnableProcessing();
Reopen(options);
ASSERT_EQ(5, 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<rocksdb::MockTimeEnv> mock_env;
mock_env.reset(new rocksdb::MockTimeEnv(env_));
mock_env->set_current_time(0); // in seconds
options.env = mock_env.get();
rocksdb::SyncPoint::GetInstance()->DisableProcessing();
rocksdb::SyncPoint::GetInstance()->ClearAllCallBacks();
#if defined(OS_MACOSX) && !defined(NDEBUG)
rocksdb::SyncPoint::GetInstance()->SetCallBack(
"InstrumentedCondVar::TimedWaitInternal", [&](void* arg) {
uint64_t time_us = *reinterpret_cast<uint64_t*>(arg);
if (time_us < mock_env->RealNowMicros()) {
*reinterpret_cast<uint64_t*>(arg) = mock_env->RealNowMicros() + 1000;
}
});
#endif // OS_MACOSX && !NDEBUG
int counter = 0;
rocksdb::SyncPoint::GetInstance()->SetCallBack(
"DBImpl::PersistStats:Entry", [&](void* /*arg*/) { counter++; });
rocksdb::SyncPoint::GetInstance()->EnableProcessing();
Reopen(options);
ASSERT_EQ(5, 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<rocksdb::MockTimeEnv> mock_env;
mock_env.reset(new rocksdb::MockTimeEnv(env_));
mock_env->set_current_time(0); // in seconds
options.env = mock_env.get();
rocksdb::SyncPoint::GetInstance()->DisableProcessing();
rocksdb::SyncPoint::GetInstance()->ClearAllCallBacks();
#if defined(OS_MACOSX) && !defined(NDEBUG)
rocksdb::SyncPoint::GetInstance()->SetCallBack(
"InstrumentedCondVar::TimedWaitInternal", [&](void* arg) {
uint64_t time_us = *reinterpret_cast<uint64_t*>(arg);
if (time_us < mock_env->RealNowMicros()) {
*reinterpret_cast<uint64_t*>(arg) = mock_env->RealNowMicros() + 1000;
}
});
#endif // OS_MACOSX && !NDEBUG
int counter = 0;
rocksdb::SyncPoint::GetInstance()->SetCallBack(
"DBImpl::PersistStats:Entry", [&](void* /*arg*/) { counter++; });
rocksdb::SyncPoint::GetInstance()->EnableProcessing();
Reopen(options);
ASSERT_OK(dbfull()->SetDBOptions({{"stats_persist_period_sec", "5"}}));
ASSERT_EQ(5, 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 = rocksdb::CreateDBStatistics();
std::unique_ptr<rocksdb::MockTimeEnv> mock_env;
mock_env.reset(new rocksdb::MockTimeEnv(env_));
mock_env->set_current_time(0); // in seconds
options.env = mock_env.get();
#if defined(OS_MACOSX) && !defined(NDEBUG)
rocksdb::SyncPoint::GetInstance()->DisableProcessing();
rocksdb::SyncPoint::GetInstance()->ClearAllCallBacks();
rocksdb::SyncPoint::GetInstance()->SetCallBack(
"InstrumentedCondVar::TimedWaitInternal", [&](void* arg) {
uint64_t time_us = *reinterpret_cast<uint64_t*>(arg);
if (time_us < mock_env->RealNowMicros()) {
*reinterpret_cast<uint64_t*>(arg) = mock_env->RealNowMicros() + 1000;
}
});
rocksdb::SyncPoint::GetInstance()->EnableProcessing();
#endif // OS_MACOSX && !NDEBUG
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 = rocksdb::CreateDBStatistics();
options.stats_persist_period_sec = 1;
std::unique_ptr<rocksdb::MockTimeEnv> mock_env;
mock_env.reset(new rocksdb::MockTimeEnv(env_));
mock_env->set_current_time(0); // in seconds
options.env = mock_env.get();
#if defined(OS_MACOSX) && !defined(NDEBUG)
rocksdb::SyncPoint::GetInstance()->DisableProcessing();
rocksdb::SyncPoint::GetInstance()->ClearAllCallBacks();
rocksdb::SyncPoint::GetInstance()->SetCallBack(
"InstrumentedCondVar::TimedWaitInternal", [&](void* arg) {
uint64_t time_us = *reinterpret_cast<uint64_t*>(arg);
if (time_us < mock_env->RealNowMicros()) {
*reinterpret_cast<uint64_t*>(arg) = mock_env->RealNowMicros() + 1000;
}
});
rocksdb::SyncPoint::GetInstance()->EnableProcessing();
#endif // OS_MACOSX && !NDEBUG
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, 12000);
// capping memory cost at 12000 bytes since one slice is around 10000~12000
ASSERT_OK(dbfull()->SetDBOptions({{"stats_history_buffer_size", "12000"}}));
ASSERT_EQ(12000, 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 < 12000 &&
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 = rocksdb::CreateDBStatistics();
options.persist_stats_to_disk = true;
std::unique_ptr<rocksdb::MockTimeEnv> mock_env;
mock_env.reset(new rocksdb::MockTimeEnv(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 = rocksdb::CreateDBStatistics();
options.persist_stats_to_disk = true;
std::unique_ptr<rocksdb::MockTimeEnv> mock_env;
mock_env.reset(new rocksdb::MockTimeEnv(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 = rocksdb::CreateDBStatistics();
options.persist_stats_to_disk = true;
std::unique_ptr<rocksdb::MockTimeEnv> mock_env;
mock_env.reset(new rocksdb::MockTimeEnv(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.
Reopen(options);
Flush();
Close();
// Now check keys in read only mode.
ASSERT_OK(ReadOnlyReopen(options));
}
} // namespace rocksdb
int main(int argc, char** argv) {
rocksdb::port::InstallStackTraceHandler();
::testing::InitGoogleTest(&argc, argv);
return RUN_ALL_TESTS();
}