09fcf4fb6b
Summary: RocksDB should decrement the counter `unscheduled_flushes_` as soon as the bg thread is scheduled. Before this fix, the counter is decremented only when the bg thread starts and picks an element from the flush queue. This may cause more than necessary bg threads to be scheduled. Not a correctness issue, but may affect flush thread count. Pull Request resolved: https://github.com/facebook/rocksdb/pull/6104 Test Plan: ``` make check ``` Differential Revision: D18735584 Pulled By: riversand963 fbshipit-source-id: d36272d4a08a494aeeab6200a3cff7a3d1a2dc10
756 lines
27 KiB
C++
756 lines
27 KiB
C++
// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
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// This source code is licensed under both the GPLv2 (found in the
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// COPYING file in the root directory) and Apache 2.0 License
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// (found in the LICENSE.Apache file in the root directory).
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//
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// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file. See the AUTHORS file for names of contributors.
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#include <atomic>
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#include "db/db_impl/db_impl.h"
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#include "db/db_test_util.h"
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#include "port/port.h"
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#include "port/stack_trace.h"
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#include "test_util/fault_injection_test_env.h"
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#include "test_util/sync_point.h"
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#include "util/cast_util.h"
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#include "util/mutexlock.h"
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namespace rocksdb {
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class DBFlushTest : public DBTestBase {
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public:
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DBFlushTest() : DBTestBase("/db_flush_test") {}
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};
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class DBFlushDirectIOTest : public DBFlushTest,
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public ::testing::WithParamInterface<bool> {
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public:
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DBFlushDirectIOTest() : DBFlushTest() {}
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};
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class DBAtomicFlushTest : public DBFlushTest,
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public ::testing::WithParamInterface<bool> {
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public:
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DBAtomicFlushTest() : DBFlushTest() {}
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};
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// We had issue when two background threads trying to flush at the same time,
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// only one of them get committed. The test verifies the issue is fixed.
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TEST_F(DBFlushTest, FlushWhileWritingManifest) {
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Options options;
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options.disable_auto_compactions = true;
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options.max_background_flushes = 2;
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options.env = env_;
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Reopen(options);
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FlushOptions no_wait;
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no_wait.wait = false;
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no_wait.allow_write_stall=true;
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SyncPoint::GetInstance()->LoadDependency(
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{{"VersionSet::LogAndApply:WriteManifest",
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"DBFlushTest::FlushWhileWritingManifest:1"},
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{"MemTableList::TryInstallMemtableFlushResults:InProgress",
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"VersionSet::LogAndApply:WriteManifestDone"}});
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SyncPoint::GetInstance()->EnableProcessing();
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ASSERT_OK(Put("foo", "v"));
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ASSERT_OK(dbfull()->Flush(no_wait));
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TEST_SYNC_POINT("DBFlushTest::FlushWhileWritingManifest:1");
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ASSERT_OK(Put("bar", "v"));
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ASSERT_OK(dbfull()->Flush(no_wait));
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// If the issue is hit we will wait here forever.
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dbfull()->TEST_WaitForFlushMemTable();
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#ifndef ROCKSDB_LITE
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ASSERT_EQ(2, TotalTableFiles());
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#endif // ROCKSDB_LITE
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}
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// Disable this test temporarily on Travis as it fails intermittently.
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// Github issue: #4151
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TEST_F(DBFlushTest, SyncFail) {
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std::unique_ptr<FaultInjectionTestEnv> fault_injection_env(
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new FaultInjectionTestEnv(env_));
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Options options;
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options.disable_auto_compactions = true;
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options.env = fault_injection_env.get();
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SyncPoint::GetInstance()->LoadDependency(
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{{"DBFlushTest::SyncFail:GetVersionRefCount:1",
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"DBImpl::FlushMemTableToOutputFile:BeforePickMemtables"},
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{"DBImpl::FlushMemTableToOutputFile:AfterPickMemtables",
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"DBFlushTest::SyncFail:GetVersionRefCount:2"},
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{"DBFlushTest::SyncFail:1", "DBImpl::SyncClosedLogs:Start"},
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{"DBImpl::SyncClosedLogs:Failed", "DBFlushTest::SyncFail:2"}});
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SyncPoint::GetInstance()->EnableProcessing();
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CreateAndReopenWithCF({"pikachu"}, options);
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Put("key", "value");
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auto* cfd =
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reinterpret_cast<ColumnFamilyHandleImpl*>(db_->DefaultColumnFamily())
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->cfd();
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FlushOptions flush_options;
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flush_options.wait = false;
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ASSERT_OK(dbfull()->Flush(flush_options));
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// Flush installs a new super-version. Get the ref count after that.
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auto current_before = cfd->current();
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int refs_before = cfd->current()->TEST_refs();
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TEST_SYNC_POINT("DBFlushTest::SyncFail:GetVersionRefCount:1");
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TEST_SYNC_POINT("DBFlushTest::SyncFail:GetVersionRefCount:2");
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int refs_after_picking_memtables = cfd->current()->TEST_refs();
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ASSERT_EQ(refs_before + 1, refs_after_picking_memtables);
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fault_injection_env->SetFilesystemActive(false);
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TEST_SYNC_POINT("DBFlushTest::SyncFail:1");
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TEST_SYNC_POINT("DBFlushTest::SyncFail:2");
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fault_injection_env->SetFilesystemActive(true);
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// Now the background job will do the flush; wait for it.
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dbfull()->TEST_WaitForFlushMemTable();
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#ifndef ROCKSDB_LITE
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ASSERT_EQ("", FilesPerLevel()); // flush failed.
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#endif // ROCKSDB_LITE
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// Backgroun flush job should release ref count to current version.
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ASSERT_EQ(current_before, cfd->current());
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ASSERT_EQ(refs_before, cfd->current()->TEST_refs());
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Destroy(options);
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}
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TEST_F(DBFlushTest, SyncSkip) {
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Options options = CurrentOptions();
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SyncPoint::GetInstance()->LoadDependency(
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{{"DBFlushTest::SyncSkip:1", "DBImpl::SyncClosedLogs:Skip"},
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{"DBImpl::SyncClosedLogs:Skip", "DBFlushTest::SyncSkip:2"}});
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SyncPoint::GetInstance()->EnableProcessing();
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Reopen(options);
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Put("key", "value");
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FlushOptions flush_options;
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flush_options.wait = false;
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ASSERT_OK(dbfull()->Flush(flush_options));
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TEST_SYNC_POINT("DBFlushTest::SyncSkip:1");
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TEST_SYNC_POINT("DBFlushTest::SyncSkip:2");
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// Now the background job will do the flush; wait for it.
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dbfull()->TEST_WaitForFlushMemTable();
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Destroy(options);
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}
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TEST_F(DBFlushTest, FlushInLowPriThreadPool) {
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// Verify setting an empty high-pri (flush) thread pool causes flushes to be
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// scheduled in the low-pri (compaction) thread pool.
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Options options = CurrentOptions();
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options.level0_file_num_compaction_trigger = 4;
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options.memtable_factory.reset(new SpecialSkipListFactory(1));
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Reopen(options);
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env_->SetBackgroundThreads(0, Env::HIGH);
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std::thread::id tid;
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int num_flushes = 0, num_compactions = 0;
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SyncPoint::GetInstance()->SetCallBack(
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"DBImpl::BGWorkFlush", [&](void* /*arg*/) {
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if (tid == std::thread::id()) {
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tid = std::this_thread::get_id();
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} else {
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ASSERT_EQ(tid, std::this_thread::get_id());
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}
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++num_flushes;
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});
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SyncPoint::GetInstance()->SetCallBack(
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"DBImpl::BGWorkCompaction", [&](void* /*arg*/) {
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ASSERT_EQ(tid, std::this_thread::get_id());
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++num_compactions;
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});
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SyncPoint::GetInstance()->EnableProcessing();
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ASSERT_OK(Put("key", "val"));
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for (int i = 0; i < 4; ++i) {
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ASSERT_OK(Put("key", "val"));
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dbfull()->TEST_WaitForFlushMemTable();
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}
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dbfull()->TEST_WaitForCompact();
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ASSERT_EQ(4, num_flushes);
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ASSERT_EQ(1, num_compactions);
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}
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TEST_F(DBFlushTest, ManualFlushWithMinWriteBufferNumberToMerge) {
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Options options = CurrentOptions();
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options.write_buffer_size = 100;
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options.max_write_buffer_number = 4;
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options.min_write_buffer_number_to_merge = 3;
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Reopen(options);
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SyncPoint::GetInstance()->LoadDependency(
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{{"DBImpl::BGWorkFlush",
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"DBFlushTest::ManualFlushWithMinWriteBufferNumberToMerge:1"},
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{"DBFlushTest::ManualFlushWithMinWriteBufferNumberToMerge:2",
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"FlushJob::WriteLevel0Table"}});
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SyncPoint::GetInstance()->EnableProcessing();
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ASSERT_OK(Put("key1", "value1"));
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port::Thread t([&]() {
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// The call wait for flush to finish, i.e. with flush_options.wait = true.
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ASSERT_OK(Flush());
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});
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// Wait for flush start.
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TEST_SYNC_POINT("DBFlushTest::ManualFlushWithMinWriteBufferNumberToMerge:1");
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// Insert a second memtable before the manual flush finish.
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// At the end of the manual flush job, it will check if further flush
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// is needed, but it will not trigger flush of the second memtable because
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// min_write_buffer_number_to_merge is not reached.
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ASSERT_OK(Put("key2", "value2"));
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ASSERT_OK(dbfull()->TEST_SwitchMemtable());
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TEST_SYNC_POINT("DBFlushTest::ManualFlushWithMinWriteBufferNumberToMerge:2");
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// Manual flush should return, without waiting for flush indefinitely.
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t.join();
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}
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TEST_F(DBFlushTest, ScheduleOnlyOneBgThread) {
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Options options = CurrentOptions();
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Reopen(options);
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SyncPoint::GetInstance()->DisableProcessing();
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SyncPoint::GetInstance()->ClearAllCallBacks();
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int called = 0;
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SyncPoint::GetInstance()->SetCallBack(
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"DBImpl::MaybeScheduleFlushOrCompaction:AfterSchedule:0", [&](void* arg) {
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ASSERT_NE(nullptr, arg);
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auto unscheduled_flushes = *reinterpret_cast<int*>(arg);
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ASSERT_EQ(0, unscheduled_flushes);
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++called;
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});
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SyncPoint::GetInstance()->EnableProcessing();
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ASSERT_OK(Put("a", "foo"));
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FlushOptions flush_opts;
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ASSERT_OK(dbfull()->Flush(flush_opts));
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ASSERT_EQ(1, called);
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SyncPoint::GetInstance()->DisableProcessing();
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SyncPoint::GetInstance()->ClearAllCallBacks();
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}
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TEST_P(DBFlushDirectIOTest, DirectIO) {
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Options options;
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options.create_if_missing = true;
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options.disable_auto_compactions = true;
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options.max_background_flushes = 2;
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options.use_direct_io_for_flush_and_compaction = GetParam();
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options.env = new MockEnv(Env::Default());
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SyncPoint::GetInstance()->SetCallBack(
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"BuildTable:create_file", [&](void* arg) {
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bool* use_direct_writes = static_cast<bool*>(arg);
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ASSERT_EQ(*use_direct_writes,
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options.use_direct_io_for_flush_and_compaction);
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});
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SyncPoint::GetInstance()->EnableProcessing();
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Reopen(options);
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ASSERT_OK(Put("foo", "v"));
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FlushOptions flush_options;
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flush_options.wait = true;
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ASSERT_OK(dbfull()->Flush(flush_options));
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Destroy(options);
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delete options.env;
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}
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TEST_F(DBFlushTest, FlushError) {
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Options options;
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std::unique_ptr<FaultInjectionTestEnv> fault_injection_env(
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new FaultInjectionTestEnv(env_));
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options.write_buffer_size = 100;
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options.max_write_buffer_number = 4;
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options.min_write_buffer_number_to_merge = 3;
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options.disable_auto_compactions = true;
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options.env = fault_injection_env.get();
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Reopen(options);
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ASSERT_OK(Put("key1", "value1"));
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ASSERT_OK(Put("key2", "value2"));
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fault_injection_env->SetFilesystemActive(false);
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Status s = dbfull()->TEST_SwitchMemtable();
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fault_injection_env->SetFilesystemActive(true);
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Destroy(options);
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ASSERT_NE(s, Status::OK());
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}
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TEST_F(DBFlushTest, ManualFlushFailsInReadOnlyMode) {
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// Regression test for bug where manual flush hangs forever when the DB
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// is in read-only mode. Verify it now at least returns, despite failing.
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Options options;
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std::unique_ptr<FaultInjectionTestEnv> fault_injection_env(
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new FaultInjectionTestEnv(env_));
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options.env = fault_injection_env.get();
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options.max_write_buffer_number = 2;
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Reopen(options);
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// Trigger a first flush but don't let it run
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ASSERT_OK(db_->PauseBackgroundWork());
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ASSERT_OK(Put("key1", "value1"));
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FlushOptions flush_opts;
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flush_opts.wait = false;
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ASSERT_OK(db_->Flush(flush_opts));
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// Write a key to the second memtable so we have something to flush later
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// after the DB is in read-only mode.
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ASSERT_OK(Put("key2", "value2"));
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// Let the first flush continue, hit an error, and put the DB in read-only
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// mode.
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fault_injection_env->SetFilesystemActive(false);
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ASSERT_OK(db_->ContinueBackgroundWork());
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dbfull()->TEST_WaitForFlushMemTable();
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#ifndef ROCKSDB_LITE
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uint64_t num_bg_errors;
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ASSERT_TRUE(db_->GetIntProperty(DB::Properties::kBackgroundErrors,
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&num_bg_errors));
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ASSERT_GT(num_bg_errors, 0);
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#endif // ROCKSDB_LITE
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// In the bug scenario, triggering another flush would cause the second flush
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// to hang forever. After the fix we expect it to return an error.
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ASSERT_NOK(db_->Flush(FlushOptions()));
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Close();
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}
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TEST_F(DBFlushTest, CFDropRaceWithWaitForFlushMemTables) {
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Options options = CurrentOptions();
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options.create_if_missing = true;
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CreateAndReopenWithCF({"pikachu"}, options);
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SyncPoint::GetInstance()->DisableProcessing();
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SyncPoint::GetInstance()->LoadDependency(
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{{"DBImpl::FlushMemTable:AfterScheduleFlush",
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"DBFlushTest::CFDropRaceWithWaitForFlushMemTables:BeforeDrop"},
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{"DBFlushTest::CFDropRaceWithWaitForFlushMemTables:AfterFree",
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"DBImpl::BackgroundCallFlush:start"},
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{"DBImpl::BackgroundCallFlush:start",
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"DBImpl::FlushMemTable:BeforeWaitForBgFlush"}});
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SyncPoint::GetInstance()->EnableProcessing();
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ASSERT_EQ(2, handles_.size());
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ASSERT_OK(Put(1, "key", "value"));
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auto* cfd = static_cast<ColumnFamilyHandleImpl*>(handles_[1])->cfd();
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port::Thread drop_cf_thr([&]() {
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TEST_SYNC_POINT(
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"DBFlushTest::CFDropRaceWithWaitForFlushMemTables:BeforeDrop");
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ASSERT_OK(dbfull()->DropColumnFamily(handles_[1]));
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ASSERT_OK(dbfull()->DestroyColumnFamilyHandle(handles_[1]));
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handles_.resize(1);
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TEST_SYNC_POINT(
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"DBFlushTest::CFDropRaceWithWaitForFlushMemTables:AfterFree");
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});
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FlushOptions flush_opts;
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flush_opts.allow_write_stall = true;
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ASSERT_NOK(dbfull()->TEST_FlushMemTable(cfd, flush_opts));
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drop_cf_thr.join();
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Close();
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SyncPoint::GetInstance()->DisableProcessing();
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}
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#ifndef ROCKSDB_LITE
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TEST_F(DBFlushTest, FireOnFlushCompletedAfterCommittedResult) {
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class TestListener : public EventListener {
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public:
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void OnFlushCompleted(DB* db, const FlushJobInfo& info) override {
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// There's only one key in each flush.
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ASSERT_EQ(info.smallest_seqno, info.largest_seqno);
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ASSERT_NE(0, info.smallest_seqno);
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if (info.smallest_seqno == seq1) {
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// First flush completed
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ASSERT_FALSE(completed1);
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completed1 = true;
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CheckFlushResultCommitted(db, seq1);
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} else {
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// Second flush completed
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ASSERT_FALSE(completed2);
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completed2 = true;
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ASSERT_EQ(info.smallest_seqno, seq2);
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CheckFlushResultCommitted(db, seq2);
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}
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}
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void CheckFlushResultCommitted(DB* db, SequenceNumber seq) {
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DBImpl* db_impl = static_cast_with_check<DBImpl>(db);
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InstrumentedMutex* mutex = db_impl->mutex();
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mutex->Lock();
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auto* cfd =
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reinterpret_cast<ColumnFamilyHandleImpl*>(db->DefaultColumnFamily())
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->cfd();
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ASSERT_LT(seq, cfd->imm()->current()->GetEarliestSequenceNumber());
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mutex->Unlock();
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}
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std::atomic<SequenceNumber> seq1{0};
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std::atomic<SequenceNumber> seq2{0};
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std::atomic<bool> completed1{false};
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std::atomic<bool> completed2{false};
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};
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std::shared_ptr<TestListener> listener = std::make_shared<TestListener>();
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SyncPoint::GetInstance()->LoadDependency(
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{{"DBImpl::BackgroundCallFlush:start",
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"DBFlushTest::FireOnFlushCompletedAfterCommittedResult:WaitFirst"},
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{"DBImpl::FlushMemTableToOutputFile:Finish",
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"DBFlushTest::FireOnFlushCompletedAfterCommittedResult:WaitSecond"}});
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SyncPoint::GetInstance()->SetCallBack(
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"FlushJob::WriteLevel0Table", [&listener](void* arg) {
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// Wait for the second flush finished, out of mutex.
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auto* mems = reinterpret_cast<autovector<MemTable*>*>(arg);
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if (mems->front()->GetEarliestSequenceNumber() == listener->seq1 - 1) {
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TEST_SYNC_POINT(
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"DBFlushTest::FireOnFlushCompletedAfterCommittedResult:"
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"WaitSecond");
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}
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});
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Options options = CurrentOptions();
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options.create_if_missing = true;
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options.listeners.push_back(listener);
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// Setting max_flush_jobs = max_background_jobs / 4 = 2.
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options.max_background_jobs = 8;
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// Allow 2 immutable memtables.
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options.max_write_buffer_number = 3;
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Reopen(options);
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SyncPoint::GetInstance()->EnableProcessing();
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ASSERT_OK(Put("foo", "v"));
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listener->seq1 = db_->GetLatestSequenceNumber();
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// t1 will wait for the second flush complete before committing flush result.
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auto t1 = port::Thread([&]() {
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// flush_opts.wait = true
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ASSERT_OK(db_->Flush(FlushOptions()));
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});
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// Wait for first flush started.
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TEST_SYNC_POINT(
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"DBFlushTest::FireOnFlushCompletedAfterCommittedResult:WaitFirst");
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// The second flush will exit early without commit its result. The work
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// is delegated to the first flush.
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ASSERT_OK(Put("bar", "v"));
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listener->seq2 = db_->GetLatestSequenceNumber();
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FlushOptions flush_opts;
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flush_opts.wait = false;
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ASSERT_OK(db_->Flush(flush_opts));
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t1.join();
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ASSERT_TRUE(listener->completed1);
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ASSERT_TRUE(listener->completed2);
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SyncPoint::GetInstance()->DisableProcessing();
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SyncPoint::GetInstance()->ClearAllCallBacks();
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}
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#endif // !ROCKSDB_LITE
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TEST_P(DBAtomicFlushTest, ManualAtomicFlush) {
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Options options = CurrentOptions();
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options.create_if_missing = true;
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options.atomic_flush = GetParam();
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options.write_buffer_size = (static_cast<size_t>(64) << 20);
|
|
|
|
CreateAndReopenWithCF({"pikachu", "eevee"}, options);
|
|
size_t num_cfs = handles_.size();
|
|
ASSERT_EQ(3, num_cfs);
|
|
WriteOptions wopts;
|
|
wopts.disableWAL = true;
|
|
for (size_t i = 0; i != num_cfs; ++i) {
|
|
ASSERT_OK(Put(static_cast<int>(i) /*cf*/, "key", "value", wopts));
|
|
}
|
|
std::vector<int> cf_ids;
|
|
for (size_t i = 0; i != num_cfs; ++i) {
|
|
cf_ids.emplace_back(static_cast<int>(i));
|
|
}
|
|
ASSERT_OK(Flush(cf_ids));
|
|
for (size_t i = 0; i != num_cfs; ++i) {
|
|
auto cfh = static_cast<ColumnFamilyHandleImpl*>(handles_[i]);
|
|
ASSERT_EQ(0, cfh->cfd()->imm()->NumNotFlushed());
|
|
ASSERT_TRUE(cfh->cfd()->mem()->IsEmpty());
|
|
}
|
|
}
|
|
|
|
TEST_P(DBAtomicFlushTest, AtomicFlushTriggeredByMemTableFull) {
|
|
Options options = CurrentOptions();
|
|
options.create_if_missing = true;
|
|
options.atomic_flush = GetParam();
|
|
// 4KB so that we can easily trigger auto flush.
|
|
options.write_buffer_size = 4096;
|
|
|
|
SyncPoint::GetInstance()->LoadDependency(
|
|
{{"DBImpl::BackgroundCallFlush:FlushFinish:0",
|
|
"DBAtomicFlushTest::AtomicFlushTriggeredByMemTableFull:BeforeCheck"}});
|
|
SyncPoint::GetInstance()->EnableProcessing();
|
|
|
|
CreateAndReopenWithCF({"pikachu", "eevee"}, options);
|
|
size_t num_cfs = handles_.size();
|
|
ASSERT_EQ(3, num_cfs);
|
|
WriteOptions wopts;
|
|
wopts.disableWAL = true;
|
|
for (size_t i = 0; i != num_cfs; ++i) {
|
|
ASSERT_OK(Put(static_cast<int>(i) /*cf*/, "key", "value", wopts));
|
|
}
|
|
// Keep writing to one of them column families to trigger auto flush.
|
|
for (int i = 0; i != 4000; ++i) {
|
|
ASSERT_OK(Put(static_cast<int>(num_cfs) - 1 /*cf*/,
|
|
"key" + std::to_string(i), "value" + std::to_string(i),
|
|
wopts));
|
|
}
|
|
|
|
TEST_SYNC_POINT(
|
|
"DBAtomicFlushTest::AtomicFlushTriggeredByMemTableFull:BeforeCheck");
|
|
if (options.atomic_flush) {
|
|
for (size_t i = 0; i != num_cfs - 1; ++i) {
|
|
auto cfh = static_cast<ColumnFamilyHandleImpl*>(handles_[i]);
|
|
ASSERT_EQ(0, cfh->cfd()->imm()->NumNotFlushed());
|
|
ASSERT_TRUE(cfh->cfd()->mem()->IsEmpty());
|
|
}
|
|
} else {
|
|
for (size_t i = 0; i != num_cfs - 1; ++i) {
|
|
auto cfh = static_cast<ColumnFamilyHandleImpl*>(handles_[i]);
|
|
ASSERT_EQ(0, cfh->cfd()->imm()->NumNotFlushed());
|
|
ASSERT_FALSE(cfh->cfd()->mem()->IsEmpty());
|
|
}
|
|
}
|
|
SyncPoint::GetInstance()->DisableProcessing();
|
|
}
|
|
|
|
TEST_P(DBAtomicFlushTest, AtomicFlushRollbackSomeJobs) {
|
|
bool atomic_flush = GetParam();
|
|
if (!atomic_flush) {
|
|
return;
|
|
}
|
|
std::unique_ptr<FaultInjectionTestEnv> fault_injection_env(
|
|
new FaultInjectionTestEnv(env_));
|
|
Options options = CurrentOptions();
|
|
options.create_if_missing = true;
|
|
options.atomic_flush = atomic_flush;
|
|
options.env = fault_injection_env.get();
|
|
SyncPoint::GetInstance()->DisableProcessing();
|
|
SyncPoint::GetInstance()->LoadDependency(
|
|
{{"DBImpl::AtomicFlushMemTablesToOutputFiles:SomeFlushJobsComplete:1",
|
|
"DBAtomicFlushTest::AtomicFlushRollbackSomeJobs:1"},
|
|
{"DBAtomicFlushTest::AtomicFlushRollbackSomeJobs:2",
|
|
"DBImpl::AtomicFlushMemTablesToOutputFiles:SomeFlushJobsComplete:2"}});
|
|
SyncPoint::GetInstance()->EnableProcessing();
|
|
|
|
CreateAndReopenWithCF({"pikachu", "eevee"}, options);
|
|
size_t num_cfs = handles_.size();
|
|
ASSERT_EQ(3, num_cfs);
|
|
WriteOptions wopts;
|
|
wopts.disableWAL = true;
|
|
for (size_t i = 0; i != num_cfs; ++i) {
|
|
int cf_id = static_cast<int>(i);
|
|
ASSERT_OK(Put(cf_id, "key", "value", wopts));
|
|
}
|
|
FlushOptions flush_opts;
|
|
flush_opts.wait = false;
|
|
ASSERT_OK(dbfull()->Flush(flush_opts, handles_));
|
|
TEST_SYNC_POINT("DBAtomicFlushTest::AtomicFlushRollbackSomeJobs:1");
|
|
fault_injection_env->SetFilesystemActive(false);
|
|
TEST_SYNC_POINT("DBAtomicFlushTest::AtomicFlushRollbackSomeJobs:2");
|
|
for (auto* cfh : handles_) {
|
|
dbfull()->TEST_WaitForFlushMemTable(cfh);
|
|
}
|
|
for (size_t i = 0; i != num_cfs; ++i) {
|
|
auto cfh = static_cast<ColumnFamilyHandleImpl*>(handles_[i]);
|
|
ASSERT_EQ(1, cfh->cfd()->imm()->NumNotFlushed());
|
|
ASSERT_TRUE(cfh->cfd()->mem()->IsEmpty());
|
|
}
|
|
fault_injection_env->SetFilesystemActive(true);
|
|
Destroy(options);
|
|
}
|
|
|
|
TEST_P(DBAtomicFlushTest, FlushMultipleCFs_DropSomeBeforeRequestFlush) {
|
|
bool atomic_flush = GetParam();
|
|
if (!atomic_flush) {
|
|
return;
|
|
}
|
|
Options options = CurrentOptions();
|
|
options.create_if_missing = true;
|
|
options.atomic_flush = atomic_flush;
|
|
SyncPoint::GetInstance()->DisableProcessing();
|
|
SyncPoint::GetInstance()->ClearAllCallBacks();
|
|
SyncPoint::GetInstance()->EnableProcessing();
|
|
|
|
CreateAndReopenWithCF({"pikachu", "eevee"}, options);
|
|
size_t num_cfs = handles_.size();
|
|
ASSERT_EQ(3, num_cfs);
|
|
WriteOptions wopts;
|
|
wopts.disableWAL = true;
|
|
std::vector<int> cf_ids;
|
|
for (size_t i = 0; i != num_cfs; ++i) {
|
|
int cf_id = static_cast<int>(i);
|
|
ASSERT_OK(Put(cf_id, "key", "value", wopts));
|
|
cf_ids.push_back(cf_id);
|
|
}
|
|
ASSERT_OK(dbfull()->DropColumnFamily(handles_[1]));
|
|
ASSERT_TRUE(Flush(cf_ids).IsColumnFamilyDropped());
|
|
Destroy(options);
|
|
}
|
|
|
|
TEST_P(DBAtomicFlushTest,
|
|
FlushMultipleCFs_DropSomeAfterScheduleFlushBeforeFlushJobRun) {
|
|
bool atomic_flush = GetParam();
|
|
if (!atomic_flush) {
|
|
return;
|
|
}
|
|
Options options = CurrentOptions();
|
|
options.create_if_missing = true;
|
|
options.atomic_flush = atomic_flush;
|
|
|
|
CreateAndReopenWithCF({"pikachu", "eevee"}, options);
|
|
|
|
SyncPoint::GetInstance()->DisableProcessing();
|
|
SyncPoint::GetInstance()->ClearAllCallBacks();
|
|
SyncPoint::GetInstance()->LoadDependency(
|
|
{{"DBImpl::AtomicFlushMemTables:AfterScheduleFlush",
|
|
"DBAtomicFlushTest::BeforeDropCF"},
|
|
{"DBAtomicFlushTest::AfterDropCF",
|
|
"DBImpl::BackgroundCallFlush:start"}});
|
|
SyncPoint::GetInstance()->EnableProcessing();
|
|
|
|
size_t num_cfs = handles_.size();
|
|
ASSERT_EQ(3, num_cfs);
|
|
WriteOptions wopts;
|
|
wopts.disableWAL = true;
|
|
for (size_t i = 0; i != num_cfs; ++i) {
|
|
int cf_id = static_cast<int>(i);
|
|
ASSERT_OK(Put(cf_id, "key", "value", wopts));
|
|
}
|
|
port::Thread user_thread([&]() {
|
|
TEST_SYNC_POINT("DBAtomicFlushTest::BeforeDropCF");
|
|
ASSERT_OK(dbfull()->DropColumnFamily(handles_[1]));
|
|
TEST_SYNC_POINT("DBAtomicFlushTest::AfterDropCF");
|
|
});
|
|
FlushOptions flush_opts;
|
|
flush_opts.wait = true;
|
|
ASSERT_OK(dbfull()->Flush(flush_opts, handles_));
|
|
user_thread.join();
|
|
for (size_t i = 0; i != num_cfs; ++i) {
|
|
int cf_id = static_cast<int>(i);
|
|
ASSERT_EQ("value", Get(cf_id, "key"));
|
|
}
|
|
|
|
ReopenWithColumnFamilies({kDefaultColumnFamilyName, "eevee"}, options);
|
|
num_cfs = handles_.size();
|
|
ASSERT_EQ(2, num_cfs);
|
|
for (size_t i = 0; i != num_cfs; ++i) {
|
|
int cf_id = static_cast<int>(i);
|
|
ASSERT_EQ("value", Get(cf_id, "key"));
|
|
}
|
|
Destroy(options);
|
|
}
|
|
|
|
TEST_P(DBAtomicFlushTest, TriggerFlushAndClose) {
|
|
bool atomic_flush = GetParam();
|
|
if (!atomic_flush) {
|
|
return;
|
|
}
|
|
const int kNumKeysTriggerFlush = 4;
|
|
Options options = CurrentOptions();
|
|
options.create_if_missing = true;
|
|
options.atomic_flush = atomic_flush;
|
|
options.memtable_factory.reset(
|
|
new SpecialSkipListFactory(kNumKeysTriggerFlush));
|
|
CreateAndReopenWithCF({"pikachu"}, options);
|
|
|
|
for (int i = 0; i != kNumKeysTriggerFlush; ++i) {
|
|
ASSERT_OK(Put(0, "key" + std::to_string(i), "value" + std::to_string(i)));
|
|
}
|
|
SyncPoint::GetInstance()->DisableProcessing();
|
|
SyncPoint::GetInstance()->ClearAllCallBacks();
|
|
SyncPoint::GetInstance()->EnableProcessing();
|
|
ASSERT_OK(Put(0, "key", "value"));
|
|
Close();
|
|
|
|
ReopenWithColumnFamilies({kDefaultColumnFamilyName, "pikachu"}, options);
|
|
ASSERT_EQ("value", Get(0, "key"));
|
|
}
|
|
|
|
TEST_P(DBAtomicFlushTest, PickMemtablesRaceWithBackgroundFlush) {
|
|
bool atomic_flush = GetParam();
|
|
Options options = CurrentOptions();
|
|
options.create_if_missing = true;
|
|
options.atomic_flush = atomic_flush;
|
|
options.max_write_buffer_number = 4;
|
|
// Set min_write_buffer_number_to_merge to be greater than 1, so that
|
|
// a column family with one memtable in the imm will not cause IsFlushPending
|
|
// to return true when flush_requested_ is false.
|
|
options.min_write_buffer_number_to_merge = 2;
|
|
CreateAndReopenWithCF({"pikachu"}, options);
|
|
ASSERT_EQ(2, handles_.size());
|
|
ASSERT_OK(dbfull()->PauseBackgroundWork());
|
|
ASSERT_OK(Put(0, "key00", "value00"));
|
|
ASSERT_OK(Put(1, "key10", "value10"));
|
|
FlushOptions flush_opts;
|
|
flush_opts.wait = false;
|
|
ASSERT_OK(dbfull()->Flush(flush_opts, handles_));
|
|
ASSERT_OK(Put(0, "key01", "value01"));
|
|
// Since max_write_buffer_number is 4, the following flush won't cause write
|
|
// stall.
|
|
ASSERT_OK(dbfull()->Flush(flush_opts));
|
|
ASSERT_OK(dbfull()->DropColumnFamily(handles_[1]));
|
|
ASSERT_OK(dbfull()->DestroyColumnFamilyHandle(handles_[1]));
|
|
handles_[1] = nullptr;
|
|
ASSERT_OK(dbfull()->ContinueBackgroundWork());
|
|
ASSERT_OK(dbfull()->TEST_WaitForFlushMemTable(handles_[0]));
|
|
delete handles_[0];
|
|
handles_.clear();
|
|
}
|
|
|
|
TEST_P(DBAtomicFlushTest, CFDropRaceWithWaitForFlushMemTables) {
|
|
bool atomic_flush = GetParam();
|
|
if (!atomic_flush) {
|
|
return;
|
|
}
|
|
Options options = CurrentOptions();
|
|
options.create_if_missing = true;
|
|
options.atomic_flush = atomic_flush;
|
|
CreateAndReopenWithCF({"pikachu"}, options);
|
|
SyncPoint::GetInstance()->DisableProcessing();
|
|
SyncPoint::GetInstance()->LoadDependency(
|
|
{{"DBImpl::AtomicFlushMemTables:AfterScheduleFlush",
|
|
"DBAtomicFlushTest::CFDropRaceWithWaitForFlushMemTables:BeforeDrop"},
|
|
{"DBAtomicFlushTest::CFDropRaceWithWaitForFlushMemTables:AfterFree",
|
|
"DBImpl::BackgroundCallFlush:start"},
|
|
{"DBImpl::BackgroundCallFlush:start",
|
|
"DBImpl::AtomicFlushMemTables:BeforeWaitForBgFlush"}});
|
|
SyncPoint::GetInstance()->EnableProcessing();
|
|
ASSERT_EQ(2, handles_.size());
|
|
ASSERT_OK(Put(0, "key", "value"));
|
|
ASSERT_OK(Put(1, "key", "value"));
|
|
auto* cfd_default =
|
|
static_cast<ColumnFamilyHandleImpl*>(dbfull()->DefaultColumnFamily())
|
|
->cfd();
|
|
auto* cfd_pikachu = static_cast<ColumnFamilyHandleImpl*>(handles_[1])->cfd();
|
|
port::Thread drop_cf_thr([&]() {
|
|
TEST_SYNC_POINT(
|
|
"DBAtomicFlushTest::CFDropRaceWithWaitForFlushMemTables:BeforeDrop");
|
|
ASSERT_OK(dbfull()->DropColumnFamily(handles_[1]));
|
|
delete handles_[1];
|
|
handles_.resize(1);
|
|
TEST_SYNC_POINT(
|
|
"DBAtomicFlushTest::CFDropRaceWithWaitForFlushMemTables:AfterFree");
|
|
});
|
|
FlushOptions flush_opts;
|
|
flush_opts.allow_write_stall = true;
|
|
ASSERT_OK(dbfull()->TEST_AtomicFlushMemTables({cfd_default, cfd_pikachu},
|
|
flush_opts));
|
|
drop_cf_thr.join();
|
|
Close();
|
|
SyncPoint::GetInstance()->DisableProcessing();
|
|
}
|
|
|
|
INSTANTIATE_TEST_CASE_P(DBFlushDirectIOTest, DBFlushDirectIOTest,
|
|
testing::Bool());
|
|
|
|
INSTANTIATE_TEST_CASE_P(DBAtomicFlushTest, DBAtomicFlushTest, testing::Bool());
|
|
|
|
} // namespace rocksdb
|
|
|
|
int main(int argc, char** argv) {
|
|
rocksdb::port::InstallStackTraceHandler();
|
|
::testing::InitGoogleTest(&argc, argv);
|
|
return RUN_ALL_TESTS();
|
|
}
|