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rocksdb/db/db_options_test.cc

102 lines
3.7 KiB

// 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 "db/db_test_util.h"
#include "port/stack_trace.h"
#include "util/sync_point.h"
namespace rocksdb {
class DBOptionsTest : public DBTestBase {
public:
DBOptionsTest() : DBTestBase("/db_options_test") {}
};
// When write stalls, user can enable auto compaction to unblock writes.
// However, we had an issue where the stalled write thread blocks the attempt
// to persist auto compaction option, thus creating a deadlock. The test
// verifies the issue is fixed.
TEST_F(DBOptionsTest, EnableAutoCompactionToUnblockWrites) {
Options options;
options.disable_auto_compactions = true;
options.write_buffer_size = 1000 * 1000; // 1M
options.level0_file_num_compaction_trigger = 1;
options.level0_slowdown_writes_trigger = 1;
options.level0_stop_writes_trigger = 1;
options.compression = kNoCompression;
SyncPoint::GetInstance()->LoadDependency(
{{"DBImpl::DelayWrite:Wait",
"DBOptionsTest::EnableAutoCompactionToUnblockWrites:1"},
{"DBImpl::BackgroundCompaction:Finish",
"DBOptionsTest::EnableAutoCompactionToUnblockWrites:1"}});
SyncPoint::GetInstance()->EnableProcessing();
// Stall writes.
Reopen(options);
env_->StartThread(
[](void* arg) {
std::string value(1000, 'v');
auto* t = static_cast<DBOptionsTest*>(arg);
for (int i = 0; i < 2000; i++) {
ASSERT_OK(t->Put(t->Key(i), value));
}
},
this);
TEST_SYNC_POINT("DBOptionsTest::EnableAutoCompactionToUnblockWrites:1");
ASSERT_TRUE(dbfull()->TEST_write_controler().IsStopped());
ColumnFamilyHandle* handle = dbfull()->DefaultColumnFamily();
// We will get a deadlock here if we hit the issue.
dbfull()->EnableAutoCompaction({handle});
env_->WaitForJoin();
}
// Similar to EnableAutoCompactionAfterStallDeadlock. See comments there.
TEST_F(DBOptionsTest, ToggleStopTriggerToUnblockWrites) {
Options options;
options.disable_auto_compactions = true;
options.write_buffer_size = 1000 * 1000; // 1M
options.level0_file_num_compaction_trigger = 1;
options.level0_slowdown_writes_trigger = 1;
options.level0_stop_writes_trigger = 1;
options.compression = kNoCompression;
SyncPoint::GetInstance()->LoadDependency(
{{"DBImpl::DelayWrite:Wait",
"DBOptionsTest::ToggleStopTriggerToUnblockWrites:1"},
{"DBImpl::BackgroundCompaction:Finish",
"DBOptionsTest::ToggleStopTriggerToUnblockWrites:1"}});
SyncPoint::GetInstance()->EnableProcessing();
// Stall writes.
Reopen(options);
env_->StartThread(
[](void* arg) {
std::string value(1000, 'v');
auto* t = static_cast<DBOptionsTest*>(arg);
for (int i = 0; i < 2000; i++) {
ASSERT_OK(t->Put(t->Key(i), value));
}
},
this);
TEST_SYNC_POINT("DBOptionsTest::ToggleStopTriggerToUnblockWrites:1");
ASSERT_TRUE(dbfull()->TEST_write_controler().IsStopped());
// We will get a deadlock here if we hit the issue.
dbfull()->SetOptions({{"level0_stop_writes_trigger", "1000000"},
{"level0_slowdown_writes_trigger", "1000000"}});
env_->WaitForJoin();
}
} // namespace rocksdb
int main(int argc, char** argv) {
rocksdb::port::InstallStackTraceHandler();
::testing::InitGoogleTest(&argc, argv);
return RUN_ALL_TESTS();
}