mirror of
https://github.com/facebook/rocksdb.git
synced 2024-11-27 02:44:18 +00:00
c93ba7db5d
Summary: RocksDB has two public APIs: `DB::LockWAL()`/`DB::UnlockWAL()`. The current implementation acquires and releases the internal `DBImpl::log_write_mutex_`. According to the comment on `DBImpl::log_write_mutex_`: https://github.com/facebook/rocksdb/blob/7.8.fb/db/db_impl/db_impl.h#L2287:L2288 > Note: to avoid dealock, if needed to acquire both log_write_mutex_ and mutex_, the order should be first mutex_ and then log_write_mutex_. This puts limitations on how applications can use the `LockWAL()` API. After `LockWAL()` returns ok, then application should not perform any operation that acquires `mutex_`. Currently, the use case of `LockWAL()` is MyRocks implementing the MySQL storage engine handlerton `lock_hton_log` interface. The operation that MyRocks performs after `LockWAL()` is `GetSortedWalFiless()` which not only acquires mutex_, but also `log_write_mutex_`. There are two issues: 1. Applications using these two APIs may hang if one thread calls `GetSortedWalFiles()` after calling `LockWAL()` because log_write_mutex is not recursive. 2. Two threads may dead lock due to lock order inversion. To fix these issues, we can modify the implementation of LockWAL so that it does not keep `log_write_mutex_` held until UnlockWAL. To achieve the goal of locking the WAL, we can instead manually inject a write stall so that all future writes will be stopped. Pull Request resolved: https://github.com/facebook/rocksdb/pull/11020 Test Plan: make check Reviewed By: ajkr Differential Revision: D41785203 Pulled By: riversand963 fbshipit-source-id: 5ccb7a9c6eb9a2c3fa80fd2c399cc2568b8f89ce
2444 lines
86 KiB
C++
2444 lines
86 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 "db/db_test_util.h"
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#include "options/options_helper.h"
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#include "port/port.h"
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#include "port/stack_trace.h"
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#include "rocksdb/file_system.h"
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#include "test_util/sync_point.h"
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#include "utilities/fault_injection_env.h"
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#include "utilities/fault_injection_fs.h"
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namespace ROCKSDB_NAMESPACE {
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class DBWALTestBase : public DBTestBase {
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protected:
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explicit DBWALTestBase(const std::string& dir_name)
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: DBTestBase(dir_name, /*env_do_fsync=*/true) {}
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#if defined(ROCKSDB_PLATFORM_POSIX)
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public:
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#if defined(ROCKSDB_FALLOCATE_PRESENT)
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bool IsFallocateSupported() {
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// Test fallocate support of running file system.
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// Skip this test if fallocate is not supported.
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std::string fname_test_fallocate = dbname_ + "/preallocate_testfile";
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int fd = -1;
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do {
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fd = open(fname_test_fallocate.c_str(), O_CREAT | O_RDWR | O_TRUNC, 0644);
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} while (fd < 0 && errno == EINTR);
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assert(fd > 0);
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int alloc_status = fallocate(fd, 0, 0, 1);
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int err_number = errno;
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close(fd);
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assert(env_->DeleteFile(fname_test_fallocate) == Status::OK());
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if (err_number == ENOSYS || err_number == EOPNOTSUPP) {
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fprintf(stderr, "Skipped preallocated space check: %s\n",
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errnoStr(err_number).c_str());
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return false;
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}
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assert(alloc_status == 0);
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return true;
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}
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#endif // ROCKSDB_FALLOCATE_PRESENT
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uint64_t GetAllocatedFileSize(std::string file_name) {
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struct stat sbuf;
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int err = stat(file_name.c_str(), &sbuf);
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assert(err == 0);
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return sbuf.st_blocks * 512;
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}
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#endif // ROCKSDB_PLATFORM_POSIX
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};
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class DBWALTest : public DBWALTestBase {
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public:
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DBWALTest() : DBWALTestBase("/db_wal_test") {}
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};
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// A SpecialEnv enriched to give more insight about deleted files
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class EnrichedSpecialEnv : public SpecialEnv {
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public:
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explicit EnrichedSpecialEnv(Env* base) : SpecialEnv(base) {}
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Status NewSequentialFile(const std::string& f,
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std::unique_ptr<SequentialFile>* r,
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const EnvOptions& soptions) override {
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InstrumentedMutexLock l(&env_mutex_);
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if (f == skipped_wal) {
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deleted_wal_reopened = true;
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if (IsWAL(f) && largest_deleted_wal.size() != 0 &&
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f.compare(largest_deleted_wal) <= 0) {
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gap_in_wals = true;
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}
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}
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return SpecialEnv::NewSequentialFile(f, r, soptions);
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}
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Status DeleteFile(const std::string& fname) override {
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if (IsWAL(fname)) {
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deleted_wal_cnt++;
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InstrumentedMutexLock l(&env_mutex_);
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// If this is the first WAL, remember its name and skip deleting it. We
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// remember its name partly because the application might attempt to
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// delete the file again.
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if (skipped_wal.size() != 0 && skipped_wal != fname) {
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if (largest_deleted_wal.size() == 0 ||
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largest_deleted_wal.compare(fname) < 0) {
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largest_deleted_wal = fname;
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}
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} else {
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skipped_wal = fname;
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return Status::OK();
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}
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}
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return SpecialEnv::DeleteFile(fname);
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}
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bool IsWAL(const std::string& fname) {
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// printf("iswal %s\n", fname.c_str());
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return fname.compare(fname.size() - 3, 3, "log") == 0;
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}
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InstrumentedMutex env_mutex_;
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// the wal whose actual delete was skipped by the env
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std::string skipped_wal = "";
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// the largest WAL that was requested to be deleted
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std::string largest_deleted_wal = "";
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// number of WALs that were successfully deleted
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std::atomic<size_t> deleted_wal_cnt = {0};
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// the WAL whose delete from fs was skipped is reopened during recovery
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std::atomic<bool> deleted_wal_reopened = {false};
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// whether a gap in the WALs was detected during recovery
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std::atomic<bool> gap_in_wals = {false};
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};
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class DBWALTestWithEnrichedEnv : public DBTestBase {
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public:
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DBWALTestWithEnrichedEnv()
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: DBTestBase("db_wal_test", /*env_do_fsync=*/true) {
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enriched_env_ = new EnrichedSpecialEnv(env_->target());
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auto options = CurrentOptions();
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options.env = enriched_env_;
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options.allow_2pc = true;
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Reopen(options);
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delete env_;
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// to be deleted by the parent class
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env_ = enriched_env_;
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}
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protected:
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EnrichedSpecialEnv* enriched_env_;
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};
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// Test that the recovery would successfully avoid the gaps between the logs.
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// One known scenario that could cause this is that the application issue the
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// WAL deletion out of order. For the sake of simplicity in the test, here we
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// create the gap by manipulating the env to skip deletion of the first WAL but
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// not the ones after it.
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TEST_F(DBWALTestWithEnrichedEnv, SkipDeletedWALs) {
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auto options = last_options_;
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// To cause frequent WAL deletion
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options.write_buffer_size = 128;
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Reopen(options);
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WriteOptions writeOpt = WriteOptions();
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for (int i = 0; i < 128 * 5; i++) {
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ASSERT_OK(dbfull()->Put(writeOpt, "foo", "v1"));
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}
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FlushOptions fo;
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fo.wait = true;
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ASSERT_OK(db_->Flush(fo));
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// some wals are deleted
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ASSERT_NE(0, enriched_env_->deleted_wal_cnt);
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// but not the first one
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ASSERT_NE(0, enriched_env_->skipped_wal.size());
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// Test that the WAL that was not deleted will be skipped during recovery
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options = last_options_;
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Reopen(options);
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ASSERT_FALSE(enriched_env_->deleted_wal_reopened);
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ASSERT_FALSE(enriched_env_->gap_in_wals);
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}
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TEST_F(DBWALTest, WAL) {
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do {
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CreateAndReopenWithCF({"pikachu"}, CurrentOptions());
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WriteOptions writeOpt = WriteOptions();
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writeOpt.disableWAL = true;
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ASSERT_OK(dbfull()->Put(writeOpt, handles_[1], "foo", "v1"));
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ASSERT_OK(dbfull()->Put(writeOpt, handles_[1], "bar", "v1"));
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ReopenWithColumnFamilies({"default", "pikachu"}, CurrentOptions());
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ASSERT_EQ("v1", Get(1, "foo"));
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ASSERT_EQ("v1", Get(1, "bar"));
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writeOpt.disableWAL = false;
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ASSERT_OK(dbfull()->Put(writeOpt, handles_[1], "bar", "v2"));
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writeOpt.disableWAL = true;
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ASSERT_OK(dbfull()->Put(writeOpt, handles_[1], "foo", "v2"));
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ReopenWithColumnFamilies({"default", "pikachu"}, CurrentOptions());
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// Both value's should be present.
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ASSERT_EQ("v2", Get(1, "bar"));
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ASSERT_EQ("v2", Get(1, "foo"));
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writeOpt.disableWAL = true;
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ASSERT_OK(dbfull()->Put(writeOpt, handles_[1], "bar", "v3"));
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writeOpt.disableWAL = false;
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ASSERT_OK(dbfull()->Put(writeOpt, handles_[1], "foo", "v3"));
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ReopenWithColumnFamilies({"default", "pikachu"}, CurrentOptions());
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// again both values should be present.
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ASSERT_EQ("v3", Get(1, "foo"));
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ASSERT_EQ("v3", Get(1, "bar"));
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} while (ChangeWalOptions());
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}
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TEST_F(DBWALTest, RollLog) {
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do {
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CreateAndReopenWithCF({"pikachu"}, CurrentOptions());
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ASSERT_OK(Put(1, "foo", "v1"));
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ASSERT_OK(Put(1, "baz", "v5"));
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ReopenWithColumnFamilies({"default", "pikachu"}, CurrentOptions());
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for (int i = 0; i < 10; i++) {
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ReopenWithColumnFamilies({"default", "pikachu"}, CurrentOptions());
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}
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ASSERT_OK(Put(1, "foo", "v4"));
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for (int i = 0; i < 10; i++) {
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ReopenWithColumnFamilies({"default", "pikachu"}, CurrentOptions());
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}
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} while (ChangeWalOptions());
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}
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TEST_F(DBWALTest, SyncWALNotBlockWrite) {
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Options options = CurrentOptions();
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options.max_write_buffer_number = 4;
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DestroyAndReopen(options);
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ASSERT_OK(Put("foo1", "bar1"));
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ASSERT_OK(Put("foo5", "bar5"));
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ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->LoadDependency({
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{"WritableFileWriter::SyncWithoutFlush:1",
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"DBWALTest::SyncWALNotBlockWrite:1"},
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{"DBWALTest::SyncWALNotBlockWrite:2",
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"WritableFileWriter::SyncWithoutFlush:2"},
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});
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ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
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ROCKSDB_NAMESPACE::port::Thread thread([&]() { ASSERT_OK(db_->SyncWAL()); });
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TEST_SYNC_POINT("DBWALTest::SyncWALNotBlockWrite:1");
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ASSERT_OK(Put("foo2", "bar2"));
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ASSERT_OK(Put("foo3", "bar3"));
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FlushOptions fo;
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fo.wait = false;
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ASSERT_OK(db_->Flush(fo));
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ASSERT_OK(Put("foo4", "bar4"));
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TEST_SYNC_POINT("DBWALTest::SyncWALNotBlockWrite:2");
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thread.join();
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ASSERT_EQ(Get("foo1"), "bar1");
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ASSERT_EQ(Get("foo2"), "bar2");
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ASSERT_EQ(Get("foo3"), "bar3");
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ASSERT_EQ(Get("foo4"), "bar4");
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ASSERT_EQ(Get("foo5"), "bar5");
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ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->DisableProcessing();
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}
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TEST_F(DBWALTest, SyncWALNotWaitWrite) {
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ASSERT_OK(Put("foo1", "bar1"));
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ASSERT_OK(Put("foo3", "bar3"));
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ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->LoadDependency({
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{"SpecialEnv::WalFile::Append:1", "DBWALTest::SyncWALNotWaitWrite:1"},
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{"DBWALTest::SyncWALNotWaitWrite:2", "SpecialEnv::WalFile::Append:2"},
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});
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ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
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ROCKSDB_NAMESPACE::port::Thread thread(
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[&]() { ASSERT_OK(Put("foo2", "bar2")); });
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// Moving this to SyncWAL before the actual fsync
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// TEST_SYNC_POINT("DBWALTest::SyncWALNotWaitWrite:1");
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ASSERT_OK(db_->SyncWAL());
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// Moving this to SyncWAL after actual fsync
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// TEST_SYNC_POINT("DBWALTest::SyncWALNotWaitWrite:2");
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thread.join();
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ASSERT_EQ(Get("foo1"), "bar1");
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ASSERT_EQ(Get("foo2"), "bar2");
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ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->DisableProcessing();
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}
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TEST_F(DBWALTest, Recover) {
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do {
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CreateAndReopenWithCF({"pikachu"}, CurrentOptions());
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ASSERT_OK(Put(1, "foo", "v1"));
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ASSERT_OK(Put(1, "baz", "v5"));
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ReopenWithColumnFamilies({"default", "pikachu"}, CurrentOptions());
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ASSERT_EQ("v1", Get(1, "foo"));
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ASSERT_EQ("v1", Get(1, "foo"));
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ASSERT_EQ("v5", Get(1, "baz"));
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ASSERT_OK(Put(1, "bar", "v2"));
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ASSERT_OK(Put(1, "foo", "v3"));
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ReopenWithColumnFamilies({"default", "pikachu"}, CurrentOptions());
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ASSERT_EQ("v3", Get(1, "foo"));
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ASSERT_OK(Put(1, "foo", "v4"));
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ASSERT_EQ("v4", Get(1, "foo"));
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ASSERT_EQ("v2", Get(1, "bar"));
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ASSERT_EQ("v5", Get(1, "baz"));
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} while (ChangeWalOptions());
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}
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TEST_F(DBWALTest, RecoverWithTableHandle) {
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do {
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Options options = CurrentOptions();
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options.create_if_missing = true;
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options.disable_auto_compactions = true;
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options.avoid_flush_during_recovery = false;
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DestroyAndReopen(options);
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CreateAndReopenWithCF({"pikachu"}, options);
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ASSERT_OK(Put(1, "foo", "v1"));
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ASSERT_OK(Put(1, "bar", "v2"));
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ASSERT_OK(Flush(1));
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ASSERT_OK(Put(1, "foo", "v3"));
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ASSERT_OK(Put(1, "bar", "v4"));
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ASSERT_OK(Flush(1));
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ASSERT_OK(Put(1, "big", std::string(100, 'a')));
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options = CurrentOptions();
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const int kSmallMaxOpenFiles = 13;
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if (option_config_ == kDBLogDir) {
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// Use this option to check not preloading files
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// Set the max open files to be small enough so no preload will
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// happen.
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options.max_open_files = kSmallMaxOpenFiles;
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// RocksDB sanitize max open files to at least 20. Modify it back.
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ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
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"SanitizeOptions::AfterChangeMaxOpenFiles", [&](void* arg) {
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int* max_open_files = static_cast<int*>(arg);
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*max_open_files = kSmallMaxOpenFiles;
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});
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} else if (option_config_ == kWalDirAndMmapReads) {
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// Use this option to check always loading all files.
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options.max_open_files = 100;
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} else {
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options.max_open_files = -1;
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}
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ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
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ReopenWithColumnFamilies({"default", "pikachu"}, options);
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ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->DisableProcessing();
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ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->ClearAllCallBacks();
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std::vector<std::vector<FileMetaData>> files;
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dbfull()->TEST_GetFilesMetaData(handles_[1], &files);
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size_t total_files = 0;
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for (const auto& level : files) {
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total_files += level.size();
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}
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ASSERT_EQ(total_files, 3);
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for (const auto& level : files) {
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for (const auto& file : level) {
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if (options.max_open_files == kSmallMaxOpenFiles) {
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ASSERT_TRUE(file.table_reader_handle == nullptr);
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} else {
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ASSERT_TRUE(file.table_reader_handle != nullptr);
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}
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}
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}
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} while (ChangeWalOptions());
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}
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TEST_F(DBWALTest, RecoverWithBlob) {
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// Write a value that's below the prospective size limit for blobs and another
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// one that's above. Note that blob files are not actually enabled at this
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// point.
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constexpr uint64_t min_blob_size = 10;
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constexpr char short_value[] = "short";
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static_assert(sizeof(short_value) - 1 < min_blob_size,
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"short_value too long");
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constexpr char long_value[] = "long_value";
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static_assert(sizeof(long_value) - 1 >= min_blob_size,
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"long_value too short");
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ASSERT_OK(Put("key1", short_value));
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ASSERT_OK(Put("key2", long_value));
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// There should be no files just yet since we haven't flushed.
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{
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VersionSet* const versions = dbfull()->GetVersionSet();
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ASSERT_NE(versions, nullptr);
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ColumnFamilyData* const cfd = versions->GetColumnFamilySet()->GetDefault();
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ASSERT_NE(cfd, nullptr);
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Version* const current = cfd->current();
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ASSERT_NE(current, nullptr);
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const VersionStorageInfo* const storage_info = current->storage_info();
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ASSERT_NE(storage_info, nullptr);
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ASSERT_EQ(storage_info->num_non_empty_levels(), 0);
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ASSERT_TRUE(storage_info->GetBlobFiles().empty());
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}
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// Reopen the database with blob files enabled. A new table file/blob file
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// pair should be written during recovery.
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Options options;
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options.enable_blob_files = true;
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options.min_blob_size = min_blob_size;
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options.avoid_flush_during_recovery = false;
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options.disable_auto_compactions = true;
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options.env = env_;
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Reopen(options);
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ASSERT_EQ(Get("key1"), short_value);
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ASSERT_EQ(Get("key2"), long_value);
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VersionSet* const versions = dbfull()->GetVersionSet();
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ASSERT_NE(versions, nullptr);
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ColumnFamilyData* const cfd = versions->GetColumnFamilySet()->GetDefault();
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ASSERT_NE(cfd, nullptr);
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Version* const current = cfd->current();
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ASSERT_NE(current, nullptr);
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const VersionStorageInfo* const storage_info = current->storage_info();
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ASSERT_NE(storage_info, nullptr);
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const auto& l0_files = storage_info->LevelFiles(0);
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ASSERT_EQ(l0_files.size(), 1);
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const FileMetaData* const table_file = l0_files[0];
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ASSERT_NE(table_file, nullptr);
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const auto& blob_files = storage_info->GetBlobFiles();
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ASSERT_EQ(blob_files.size(), 1);
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|
|
const auto& blob_file = blob_files.front();
|
|
ASSERT_NE(blob_file, nullptr);
|
|
|
|
ASSERT_EQ(table_file->smallest.user_key(), "key1");
|
|
ASSERT_EQ(table_file->largest.user_key(), "key2");
|
|
ASSERT_EQ(table_file->fd.smallest_seqno, 1);
|
|
ASSERT_EQ(table_file->fd.largest_seqno, 2);
|
|
ASSERT_EQ(table_file->oldest_blob_file_number,
|
|
blob_file->GetBlobFileNumber());
|
|
|
|
ASSERT_EQ(blob_file->GetTotalBlobCount(), 1);
|
|
|
|
#ifndef ROCKSDB_LITE
|
|
const InternalStats* const internal_stats = cfd->internal_stats();
|
|
ASSERT_NE(internal_stats, nullptr);
|
|
|
|
const auto& compaction_stats = internal_stats->TEST_GetCompactionStats();
|
|
ASSERT_FALSE(compaction_stats.empty());
|
|
ASSERT_EQ(compaction_stats[0].bytes_written, table_file->fd.GetFileSize());
|
|
ASSERT_EQ(compaction_stats[0].bytes_written_blob,
|
|
blob_file->GetTotalBlobBytes());
|
|
ASSERT_EQ(compaction_stats[0].num_output_files, 1);
|
|
ASSERT_EQ(compaction_stats[0].num_output_files_blob, 1);
|
|
|
|
const uint64_t* const cf_stats_value = internal_stats->TEST_GetCFStatsValue();
|
|
ASSERT_EQ(cf_stats_value[InternalStats::BYTES_FLUSHED],
|
|
compaction_stats[0].bytes_written +
|
|
compaction_stats[0].bytes_written_blob);
|
|
#endif // ROCKSDB_LITE
|
|
}
|
|
|
|
TEST_F(DBWALTest, RecoverWithBlobMultiSST) {
|
|
// Write several large (4 KB) values without flushing. Note that blob files
|
|
// are not actually enabled at this point.
|
|
std::string large_value(1 << 12, 'a');
|
|
|
|
constexpr int num_keys = 64;
|
|
|
|
for (int i = 0; i < num_keys; ++i) {
|
|
ASSERT_OK(Put(Key(i), large_value));
|
|
}
|
|
|
|
// There should be no files just yet since we haven't flushed.
|
|
{
|
|
VersionSet* const versions = dbfull()->GetVersionSet();
|
|
ASSERT_NE(versions, nullptr);
|
|
|
|
ColumnFamilyData* const cfd = versions->GetColumnFamilySet()->GetDefault();
|
|
ASSERT_NE(cfd, nullptr);
|
|
|
|
Version* const current = cfd->current();
|
|
ASSERT_NE(current, nullptr);
|
|
|
|
const VersionStorageInfo* const storage_info = current->storage_info();
|
|
ASSERT_NE(storage_info, nullptr);
|
|
|
|
ASSERT_EQ(storage_info->num_non_empty_levels(), 0);
|
|
ASSERT_TRUE(storage_info->GetBlobFiles().empty());
|
|
}
|
|
|
|
// Reopen the database with blob files enabled and write buffer size set to a
|
|
// smaller value. Multiple table files+blob files should be written and added
|
|
// to the Version during recovery.
|
|
Options options;
|
|
options.write_buffer_size = 1 << 16; // 64 KB
|
|
options.enable_blob_files = true;
|
|
options.avoid_flush_during_recovery = false;
|
|
options.disable_auto_compactions = true;
|
|
options.env = env_;
|
|
|
|
Reopen(options);
|
|
|
|
for (int i = 0; i < num_keys; ++i) {
|
|
ASSERT_EQ(Get(Key(i)), large_value);
|
|
}
|
|
|
|
VersionSet* const versions = dbfull()->GetVersionSet();
|
|
ASSERT_NE(versions, nullptr);
|
|
|
|
ColumnFamilyData* const cfd = versions->GetColumnFamilySet()->GetDefault();
|
|
ASSERT_NE(cfd, nullptr);
|
|
|
|
Version* const current = cfd->current();
|
|
ASSERT_NE(current, nullptr);
|
|
|
|
const VersionStorageInfo* const storage_info = current->storage_info();
|
|
ASSERT_NE(storage_info, nullptr);
|
|
|
|
const auto& l0_files = storage_info->LevelFiles(0);
|
|
ASSERT_GT(l0_files.size(), 1);
|
|
|
|
const auto& blob_files = storage_info->GetBlobFiles();
|
|
ASSERT_GT(blob_files.size(), 1);
|
|
|
|
ASSERT_EQ(l0_files.size(), blob_files.size());
|
|
}
|
|
|
|
TEST_F(DBWALTest, WALWithChecksumHandoff) {
|
|
#ifndef ROCKSDB_ASSERT_STATUS_CHECKED
|
|
if (mem_env_ || encrypted_env_) {
|
|
ROCKSDB_GTEST_SKIP("Test requires non-mem or non-encrypted environment");
|
|
return;
|
|
}
|
|
std::shared_ptr<FaultInjectionTestFS> fault_fs(
|
|
new FaultInjectionTestFS(FileSystem::Default()));
|
|
std::unique_ptr<Env> fault_fs_env(NewCompositeEnv(fault_fs));
|
|
do {
|
|
Options options = CurrentOptions();
|
|
|
|
options.checksum_handoff_file_types.Add(FileType::kWalFile);
|
|
options.env = fault_fs_env.get();
|
|
fault_fs->SetChecksumHandoffFuncType(ChecksumType::kCRC32c);
|
|
|
|
CreateAndReopenWithCF({"pikachu"}, options);
|
|
WriteOptions writeOpt = WriteOptions();
|
|
writeOpt.disableWAL = true;
|
|
ASSERT_OK(dbfull()->Put(writeOpt, handles_[1], "foo", "v1"));
|
|
ASSERT_OK(dbfull()->Put(writeOpt, handles_[1], "bar", "v1"));
|
|
|
|
ReopenWithColumnFamilies({"default", "pikachu"}, options);
|
|
ASSERT_EQ("v1", Get(1, "foo"));
|
|
ASSERT_EQ("v1", Get(1, "bar"));
|
|
|
|
writeOpt.disableWAL = false;
|
|
ASSERT_OK(dbfull()->Put(writeOpt, handles_[1], "bar", "v2"));
|
|
writeOpt.disableWAL = true;
|
|
ASSERT_OK(dbfull()->Put(writeOpt, handles_[1], "foo", "v2"));
|
|
|
|
ReopenWithColumnFamilies({"default", "pikachu"}, options);
|
|
// Both value's should be present.
|
|
ASSERT_EQ("v2", Get(1, "bar"));
|
|
ASSERT_EQ("v2", Get(1, "foo"));
|
|
|
|
writeOpt.disableWAL = true;
|
|
// This put, data is persisted by Flush
|
|
ASSERT_OK(dbfull()->Put(writeOpt, handles_[1], "bar", "v3"));
|
|
ReopenWithColumnFamilies({"default", "pikachu"}, options);
|
|
writeOpt.disableWAL = false;
|
|
// Data is persisted in the WAL
|
|
ASSERT_OK(dbfull()->Put(writeOpt, handles_[1], "zoo", "v3"));
|
|
// The hash does not match, write fails
|
|
fault_fs->SetChecksumHandoffFuncType(ChecksumType::kxxHash);
|
|
writeOpt.disableWAL = false;
|
|
ASSERT_NOK(dbfull()->Put(writeOpt, handles_[1], "foo", "v3"));
|
|
|
|
ReopenWithColumnFamilies({"default", "pikachu"}, options);
|
|
// Due to the write failure, Get should not find
|
|
ASSERT_NE("v3", Get(1, "foo"));
|
|
ASSERT_EQ("v3", Get(1, "zoo"));
|
|
ASSERT_EQ("v3", Get(1, "bar"));
|
|
|
|
fault_fs->SetChecksumHandoffFuncType(ChecksumType::kCRC32c);
|
|
// Each write will be similated as corrupted.
|
|
fault_fs->IngestDataCorruptionBeforeWrite();
|
|
writeOpt.disableWAL = true;
|
|
ASSERT_OK(dbfull()->Put(writeOpt, handles_[1], "bar", "v4"));
|
|
writeOpt.disableWAL = false;
|
|
ASSERT_NOK(dbfull()->Put(writeOpt, handles_[1], "foo", "v4"));
|
|
ReopenWithColumnFamilies({"default", "pikachu"}, options);
|
|
ASSERT_NE("v4", Get(1, "foo"));
|
|
ASSERT_NE("v4", Get(1, "bar"));
|
|
fault_fs->NoDataCorruptionBeforeWrite();
|
|
|
|
fault_fs->SetChecksumHandoffFuncType(ChecksumType::kNoChecksum);
|
|
// The file system does not provide checksum method and verification.
|
|
writeOpt.disableWAL = true;
|
|
ASSERT_OK(dbfull()->Put(writeOpt, handles_[1], "bar", "v5"));
|
|
writeOpt.disableWAL = false;
|
|
ASSERT_OK(dbfull()->Put(writeOpt, handles_[1], "foo", "v5"));
|
|
ReopenWithColumnFamilies({"default", "pikachu"}, options);
|
|
ASSERT_EQ("v5", Get(1, "foo"));
|
|
ASSERT_EQ("v5", Get(1, "bar"));
|
|
|
|
Destroy(options);
|
|
} while (ChangeWalOptions());
|
|
#endif // ROCKSDB_ASSERT_STATUS_CHECKED
|
|
}
|
|
|
|
#ifndef ROCKSDB_LITE
|
|
TEST_F(DBWALTest, LockWal) {
|
|
do {
|
|
Options options = CurrentOptions();
|
|
options.create_if_missing = true;
|
|
DestroyAndReopen(options);
|
|
SyncPoint::GetInstance()->DisableProcessing();
|
|
SyncPoint::GetInstance()->LoadDependency(
|
|
{{"DBWALTest::LockWal:AfterGetSortedWal",
|
|
"DBWALTest::LockWal:BeforeFlush:1"}});
|
|
SyncPoint::GetInstance()->EnableProcessing();
|
|
|
|
ASSERT_OK(Put("foo", "v"));
|
|
ASSERT_OK(Put("bar", "v"));
|
|
port::Thread worker([&]() {
|
|
TEST_SYNC_POINT("DBWALTest::LockWal:BeforeFlush:1");
|
|
Status tmp_s = db_->Flush(FlushOptions());
|
|
ASSERT_OK(tmp_s);
|
|
});
|
|
|
|
ASSERT_OK(db_->LockWAL());
|
|
// Verify writes are stopped
|
|
WriteOptions wopts;
|
|
wopts.no_slowdown = true;
|
|
Status s = db_->Put(wopts, "foo", "dontcare");
|
|
ASSERT_TRUE(s.IsIncomplete());
|
|
{
|
|
VectorLogPtr wals;
|
|
ASSERT_OK(db_->GetSortedWalFiles(wals));
|
|
ASSERT_FALSE(wals.empty());
|
|
}
|
|
TEST_SYNC_POINT("DBWALTest::LockWal:AfterGetSortedWal");
|
|
FlushOptions flush_opts;
|
|
flush_opts.wait = false;
|
|
s = db_->Flush(flush_opts);
|
|
ASSERT_TRUE(s.IsTryAgain());
|
|
ASSERT_OK(db_->UnlockWAL());
|
|
ASSERT_OK(db_->Put(WriteOptions(), "foo", "dontcare"));
|
|
|
|
worker.join();
|
|
|
|
SyncPoint::GetInstance()->DisableProcessing();
|
|
} while (ChangeWalOptions());
|
|
}
|
|
#endif //! ROCKSDB_LITE
|
|
|
|
class DBRecoveryTestBlobError
|
|
: public DBWALTest,
|
|
public testing::WithParamInterface<std::string> {
|
|
public:
|
|
DBRecoveryTestBlobError() : sync_point_(GetParam()) {}
|
|
|
|
std::string sync_point_;
|
|
};
|
|
|
|
INSTANTIATE_TEST_CASE_P(DBRecoveryTestBlobError, DBRecoveryTestBlobError,
|
|
::testing::ValuesIn(std::vector<std::string>{
|
|
"BlobFileBuilder::WriteBlobToFile:AddRecord",
|
|
"BlobFileBuilder::WriteBlobToFile:AppendFooter"}));
|
|
|
|
TEST_P(DBRecoveryTestBlobError, RecoverWithBlobError) {
|
|
// Write a value. Note that blob files are not actually enabled at this point.
|
|
ASSERT_OK(Put("key", "blob"));
|
|
|
|
// Reopen with blob files enabled but make blob file writing fail during
|
|
// recovery.
|
|
SyncPoint::GetInstance()->SetCallBack(sync_point_, [this](void* arg) {
|
|
Status* const s = static_cast<Status*>(arg);
|
|
assert(s);
|
|
|
|
(*s) = Status::IOError(sync_point_);
|
|
});
|
|
SyncPoint::GetInstance()->EnableProcessing();
|
|
|
|
Options options;
|
|
options.enable_blob_files = true;
|
|
options.avoid_flush_during_recovery = false;
|
|
options.disable_auto_compactions = true;
|
|
options.env = env_;
|
|
|
|
ASSERT_NOK(TryReopen(options));
|
|
|
|
SyncPoint::GetInstance()->DisableProcessing();
|
|
SyncPoint::GetInstance()->ClearAllCallBacks();
|
|
|
|
// Make sure the files generated by the failed recovery have been deleted.
|
|
std::vector<std::string> files;
|
|
ASSERT_OK(env_->GetChildren(dbname_, &files));
|
|
for (const auto& file : files) {
|
|
uint64_t number = 0;
|
|
FileType type = kTableFile;
|
|
|
|
if (!ParseFileName(file, &number, &type)) {
|
|
continue;
|
|
}
|
|
|
|
ASSERT_NE(type, kTableFile);
|
|
ASSERT_NE(type, kBlobFile);
|
|
}
|
|
}
|
|
|
|
TEST_F(DBWALTest, IgnoreRecoveredLog) {
|
|
std::string backup_logs = dbname_ + "/backup_logs";
|
|
|
|
do {
|
|
// delete old files in backup_logs directory
|
|
ASSERT_OK(env_->CreateDirIfMissing(backup_logs));
|
|
std::vector<std::string> old_files;
|
|
ASSERT_OK(env_->GetChildren(backup_logs, &old_files));
|
|
for (auto& file : old_files) {
|
|
ASSERT_OK(env_->DeleteFile(backup_logs + "/" + file));
|
|
}
|
|
Options options = CurrentOptions();
|
|
options.create_if_missing = true;
|
|
options.merge_operator = MergeOperators::CreateUInt64AddOperator();
|
|
options.wal_dir = dbname_ + "/logs";
|
|
DestroyAndReopen(options);
|
|
|
|
// fill up the DB
|
|
std::string one, two;
|
|
PutFixed64(&one, 1);
|
|
PutFixed64(&two, 2);
|
|
ASSERT_OK(db_->Merge(WriteOptions(), Slice("foo"), Slice(one)));
|
|
ASSERT_OK(db_->Merge(WriteOptions(), Slice("foo"), Slice(one)));
|
|
ASSERT_OK(db_->Merge(WriteOptions(), Slice("bar"), Slice(one)));
|
|
|
|
// copy the logs to backup
|
|
std::vector<std::string> logs;
|
|
ASSERT_OK(env_->GetChildren(options.wal_dir, &logs));
|
|
for (auto& log : logs) {
|
|
CopyFile(options.wal_dir + "/" + log, backup_logs + "/" + log);
|
|
}
|
|
|
|
// recover the DB
|
|
Reopen(options);
|
|
ASSERT_EQ(two, Get("foo"));
|
|
ASSERT_EQ(one, Get("bar"));
|
|
Close();
|
|
|
|
// copy the logs from backup back to wal dir
|
|
for (auto& log : logs) {
|
|
CopyFile(backup_logs + "/" + log, options.wal_dir + "/" + log);
|
|
}
|
|
// this should ignore the log files, recovery should not happen again
|
|
// if the recovery happens, the same merge operator would be called twice,
|
|
// leading to incorrect results
|
|
Reopen(options);
|
|
ASSERT_EQ(two, Get("foo"));
|
|
ASSERT_EQ(one, Get("bar"));
|
|
Close();
|
|
Destroy(options);
|
|
Reopen(options);
|
|
Close();
|
|
|
|
// copy the logs from backup back to wal dir
|
|
ASSERT_OK(env_->CreateDirIfMissing(options.wal_dir));
|
|
for (auto& log : logs) {
|
|
CopyFile(backup_logs + "/" + log, options.wal_dir + "/" + log);
|
|
}
|
|
// assert that we successfully recovered only from logs, even though we
|
|
// destroyed the DB
|
|
Reopen(options);
|
|
ASSERT_EQ(two, Get("foo"));
|
|
ASSERT_EQ(one, Get("bar"));
|
|
|
|
// Recovery will fail if DB directory doesn't exist.
|
|
Destroy(options);
|
|
// copy the logs from backup back to wal dir
|
|
ASSERT_OK(env_->CreateDirIfMissing(options.wal_dir));
|
|
for (auto& log : logs) {
|
|
CopyFile(backup_logs + "/" + log, options.wal_dir + "/" + log);
|
|
// we won't be needing this file no more
|
|
ASSERT_OK(env_->DeleteFile(backup_logs + "/" + log));
|
|
}
|
|
Status s = TryReopen(options);
|
|
ASSERT_NOK(s);
|
|
Destroy(options);
|
|
} while (ChangeWalOptions());
|
|
}
|
|
|
|
TEST_F(DBWALTest, RecoveryWithEmptyLog) {
|
|
do {
|
|
CreateAndReopenWithCF({"pikachu"}, CurrentOptions());
|
|
ASSERT_OK(Put(1, "foo", "v1"));
|
|
ASSERT_OK(Put(1, "foo", "v2"));
|
|
ReopenWithColumnFamilies({"default", "pikachu"}, CurrentOptions());
|
|
ReopenWithColumnFamilies({"default", "pikachu"}, CurrentOptions());
|
|
ASSERT_OK(Put(1, "foo", "v3"));
|
|
ReopenWithColumnFamilies({"default", "pikachu"}, CurrentOptions());
|
|
ASSERT_EQ("v3", Get(1, "foo"));
|
|
} while (ChangeWalOptions());
|
|
}
|
|
|
|
#if !(defined NDEBUG) || !defined(OS_WIN)
|
|
TEST_F(DBWALTest, PreallocateBlock) {
|
|
Options options = CurrentOptions();
|
|
options.write_buffer_size = 10 * 1000 * 1000;
|
|
options.max_total_wal_size = 0;
|
|
|
|
size_t expected_preallocation_size = static_cast<size_t>(
|
|
options.write_buffer_size + options.write_buffer_size / 10);
|
|
|
|
DestroyAndReopen(options);
|
|
|
|
std::atomic<int> called(0);
|
|
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
|
|
"DBTestWalFile.GetPreallocationStatus", [&](void* arg) {
|
|
ASSERT_TRUE(arg != nullptr);
|
|
size_t preallocation_size = *(static_cast<size_t*>(arg));
|
|
ASSERT_EQ(expected_preallocation_size, preallocation_size);
|
|
called.fetch_add(1);
|
|
});
|
|
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
|
|
ASSERT_OK(Put("", ""));
|
|
ASSERT_OK(Flush());
|
|
ASSERT_OK(Put("", ""));
|
|
Close();
|
|
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->DisableProcessing();
|
|
ASSERT_EQ(2, called.load());
|
|
|
|
options.max_total_wal_size = 1000 * 1000;
|
|
expected_preallocation_size = static_cast<size_t>(options.max_total_wal_size);
|
|
Reopen(options);
|
|
called.store(0);
|
|
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
|
|
"DBTestWalFile.GetPreallocationStatus", [&](void* arg) {
|
|
ASSERT_TRUE(arg != nullptr);
|
|
size_t preallocation_size = *(static_cast<size_t*>(arg));
|
|
ASSERT_EQ(expected_preallocation_size, preallocation_size);
|
|
called.fetch_add(1);
|
|
});
|
|
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
|
|
ASSERT_OK(Put("", ""));
|
|
ASSERT_OK(Flush());
|
|
ASSERT_OK(Put("", ""));
|
|
Close();
|
|
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->DisableProcessing();
|
|
ASSERT_EQ(2, called.load());
|
|
|
|
options.db_write_buffer_size = 800 * 1000;
|
|
expected_preallocation_size =
|
|
static_cast<size_t>(options.db_write_buffer_size);
|
|
Reopen(options);
|
|
called.store(0);
|
|
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
|
|
"DBTestWalFile.GetPreallocationStatus", [&](void* arg) {
|
|
ASSERT_TRUE(arg != nullptr);
|
|
size_t preallocation_size = *(static_cast<size_t*>(arg));
|
|
ASSERT_EQ(expected_preallocation_size, preallocation_size);
|
|
called.fetch_add(1);
|
|
});
|
|
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
|
|
ASSERT_OK(Put("", ""));
|
|
ASSERT_OK(Flush());
|
|
ASSERT_OK(Put("", ""));
|
|
Close();
|
|
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->DisableProcessing();
|
|
ASSERT_EQ(2, called.load());
|
|
|
|
expected_preallocation_size = 700 * 1000;
|
|
std::shared_ptr<WriteBufferManager> write_buffer_manager =
|
|
std::make_shared<WriteBufferManager>(static_cast<uint64_t>(700 * 1000));
|
|
options.write_buffer_manager = write_buffer_manager;
|
|
Reopen(options);
|
|
called.store(0);
|
|
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
|
|
"DBTestWalFile.GetPreallocationStatus", [&](void* arg) {
|
|
ASSERT_TRUE(arg != nullptr);
|
|
size_t preallocation_size = *(static_cast<size_t*>(arg));
|
|
ASSERT_EQ(expected_preallocation_size, preallocation_size);
|
|
called.fetch_add(1);
|
|
});
|
|
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
|
|
ASSERT_OK(Put("", ""));
|
|
ASSERT_OK(Flush());
|
|
ASSERT_OK(Put("", ""));
|
|
Close();
|
|
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->DisableProcessing();
|
|
ASSERT_EQ(2, called.load());
|
|
}
|
|
#endif // !(defined NDEBUG) || !defined(OS_WIN)
|
|
|
|
#ifndef ROCKSDB_LITE
|
|
TEST_F(DBWALTest, DISABLED_FullPurgePreservesRecycledLog) {
|
|
// TODO(ajkr): Disabled until WAL recycling is fixed for
|
|
// `kPointInTimeRecovery`.
|
|
|
|
// For github issue #1303
|
|
for (int i = 0; i < 2; ++i) {
|
|
Options options = CurrentOptions();
|
|
options.create_if_missing = true;
|
|
options.recycle_log_file_num = 2;
|
|
if (i != 0) {
|
|
options.wal_dir = alternative_wal_dir_;
|
|
}
|
|
|
|
DestroyAndReopen(options);
|
|
ASSERT_OK(Put("foo", "v1"));
|
|
VectorLogPtr log_files;
|
|
ASSERT_OK(dbfull()->GetSortedWalFiles(log_files));
|
|
ASSERT_GT(log_files.size(), 0);
|
|
ASSERT_OK(Flush());
|
|
|
|
// Now the original WAL is in log_files[0] and should be marked for
|
|
// recycling.
|
|
// Verify full purge cannot remove this file.
|
|
JobContext job_context(0);
|
|
dbfull()->TEST_LockMutex();
|
|
dbfull()->FindObsoleteFiles(&job_context, true /* force */);
|
|
dbfull()->TEST_UnlockMutex();
|
|
dbfull()->PurgeObsoleteFiles(job_context);
|
|
|
|
if (i == 0) {
|
|
ASSERT_OK(
|
|
env_->FileExists(LogFileName(dbname_, log_files[0]->LogNumber())));
|
|
} else {
|
|
ASSERT_OK(env_->FileExists(
|
|
LogFileName(alternative_wal_dir_, log_files[0]->LogNumber())));
|
|
}
|
|
}
|
|
}
|
|
|
|
TEST_F(DBWALTest, DISABLED_FullPurgePreservesLogPendingReuse) {
|
|
// TODO(ajkr): Disabled until WAL recycling is fixed for
|
|
// `kPointInTimeRecovery`.
|
|
|
|
// Ensures full purge cannot delete a WAL while it's in the process of being
|
|
// recycled. In particular, we force the full purge after a file has been
|
|
// chosen for reuse, but before it has been renamed.
|
|
for (int i = 0; i < 2; ++i) {
|
|
Options options = CurrentOptions();
|
|
options.recycle_log_file_num = 1;
|
|
if (i != 0) {
|
|
options.wal_dir = alternative_wal_dir_;
|
|
}
|
|
DestroyAndReopen(options);
|
|
|
|
// The first flush creates a second log so writes can continue before the
|
|
// flush finishes.
|
|
ASSERT_OK(Put("foo", "bar"));
|
|
ASSERT_OK(Flush());
|
|
|
|
// The second flush can recycle the first log. Sync points enforce the
|
|
// full purge happens after choosing the log to recycle and before it is
|
|
// renamed.
|
|
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->LoadDependency({
|
|
{"DBImpl::CreateWAL:BeforeReuseWritableFile1",
|
|
"DBWALTest::FullPurgePreservesLogPendingReuse:PreFullPurge"},
|
|
{"DBWALTest::FullPurgePreservesLogPendingReuse:PostFullPurge",
|
|
"DBImpl::CreateWAL:BeforeReuseWritableFile2"},
|
|
});
|
|
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
|
|
ROCKSDB_NAMESPACE::port::Thread thread([&]() {
|
|
TEST_SYNC_POINT(
|
|
"DBWALTest::FullPurgePreservesLogPendingReuse:PreFullPurge");
|
|
ASSERT_OK(db_->EnableFileDeletions(true));
|
|
TEST_SYNC_POINT(
|
|
"DBWALTest::FullPurgePreservesLogPendingReuse:PostFullPurge");
|
|
});
|
|
ASSERT_OK(Put("foo", "bar"));
|
|
ASSERT_OK(Flush());
|
|
thread.join();
|
|
}
|
|
}
|
|
|
|
TEST_F(DBWALTest, GetSortedWalFiles) {
|
|
do {
|
|
CreateAndReopenWithCF({"pikachu"}, CurrentOptions());
|
|
VectorLogPtr log_files;
|
|
ASSERT_OK(dbfull()->GetSortedWalFiles(log_files));
|
|
ASSERT_EQ(0, log_files.size());
|
|
|
|
ASSERT_OK(Put(1, "foo", "v1"));
|
|
ASSERT_OK(dbfull()->GetSortedWalFiles(log_files));
|
|
ASSERT_EQ(1, log_files.size());
|
|
} while (ChangeWalOptions());
|
|
}
|
|
|
|
TEST_F(DBWALTest, GetCurrentWalFile) {
|
|
do {
|
|
CreateAndReopenWithCF({"pikachu"}, CurrentOptions());
|
|
|
|
std::unique_ptr<LogFile>* bad_log_file = nullptr;
|
|
ASSERT_NOK(dbfull()->GetCurrentWalFile(bad_log_file));
|
|
|
|
std::unique_ptr<LogFile> log_file;
|
|
ASSERT_OK(dbfull()->GetCurrentWalFile(&log_file));
|
|
|
|
// nothing has been written to the log yet
|
|
ASSERT_EQ(log_file->StartSequence(), 0);
|
|
ASSERT_EQ(log_file->SizeFileBytes(), 0);
|
|
ASSERT_EQ(log_file->Type(), kAliveLogFile);
|
|
ASSERT_GT(log_file->LogNumber(), 0);
|
|
|
|
// add some data and verify that the file size actually moves foward
|
|
ASSERT_OK(Put(0, "foo", "v1"));
|
|
ASSERT_OK(Put(0, "foo2", "v2"));
|
|
ASSERT_OK(Put(0, "foo3", "v3"));
|
|
|
|
ASSERT_OK(dbfull()->GetCurrentWalFile(&log_file));
|
|
|
|
ASSERT_EQ(log_file->StartSequence(), 0);
|
|
ASSERT_GT(log_file->SizeFileBytes(), 0);
|
|
ASSERT_EQ(log_file->Type(), kAliveLogFile);
|
|
ASSERT_GT(log_file->LogNumber(), 0);
|
|
|
|
// force log files to cycle and add some more data, then check if
|
|
// log number moves forward
|
|
|
|
ReopenWithColumnFamilies({"default", "pikachu"}, CurrentOptions());
|
|
for (int i = 0; i < 10; i++) {
|
|
ReopenWithColumnFamilies({"default", "pikachu"}, CurrentOptions());
|
|
}
|
|
|
|
ASSERT_OK(Put(0, "foo4", "v4"));
|
|
ASSERT_OK(Put(0, "foo5", "v5"));
|
|
ASSERT_OK(Put(0, "foo6", "v6"));
|
|
|
|
ASSERT_OK(dbfull()->GetCurrentWalFile(&log_file));
|
|
|
|
ASSERT_EQ(log_file->StartSequence(), 0);
|
|
ASSERT_GT(log_file->SizeFileBytes(), 0);
|
|
ASSERT_EQ(log_file->Type(), kAliveLogFile);
|
|
ASSERT_GT(log_file->LogNumber(), 0);
|
|
|
|
} while (ChangeWalOptions());
|
|
}
|
|
|
|
TEST_F(DBWALTest, RecoveryWithLogDataForSomeCFs) {
|
|
// Test for regression of WAL cleanup missing files that don't contain data
|
|
// for every column family.
|
|
do {
|
|
CreateAndReopenWithCF({"pikachu"}, CurrentOptions());
|
|
ASSERT_OK(Put(1, "foo", "v1"));
|
|
ASSERT_OK(Put(1, "foo", "v2"));
|
|
uint64_t earliest_log_nums[2];
|
|
for (int i = 0; i < 2; ++i) {
|
|
if (i > 0) {
|
|
ReopenWithColumnFamilies({"default", "pikachu"}, CurrentOptions());
|
|
}
|
|
VectorLogPtr log_files;
|
|
ASSERT_OK(dbfull()->GetSortedWalFiles(log_files));
|
|
if (log_files.size() > 0) {
|
|
earliest_log_nums[i] = log_files[0]->LogNumber();
|
|
} else {
|
|
earliest_log_nums[i] = std::numeric_limits<uint64_t>::max();
|
|
}
|
|
}
|
|
// Check at least the first WAL was cleaned up during the recovery.
|
|
ASSERT_LT(earliest_log_nums[0], earliest_log_nums[1]);
|
|
} while (ChangeWalOptions());
|
|
}
|
|
|
|
TEST_F(DBWALTest, RecoverWithLargeLog) {
|
|
do {
|
|
{
|
|
Options options = CurrentOptions();
|
|
CreateAndReopenWithCF({"pikachu"}, options);
|
|
ASSERT_OK(Put(1, "big1", std::string(200000, '1')));
|
|
ASSERT_OK(Put(1, "big2", std::string(200000, '2')));
|
|
ASSERT_OK(Put(1, "small3", std::string(10, '3')));
|
|
ASSERT_OK(Put(1, "small4", std::string(10, '4')));
|
|
ASSERT_EQ(NumTableFilesAtLevel(0, 1), 0);
|
|
}
|
|
|
|
// Make sure that if we re-open with a small write buffer size that
|
|
// we flush table files in the middle of a large log file.
|
|
Options options;
|
|
options.write_buffer_size = 100000;
|
|
options = CurrentOptions(options);
|
|
ReopenWithColumnFamilies({"default", "pikachu"}, options);
|
|
ASSERT_EQ(NumTableFilesAtLevel(0, 1), 3);
|
|
ASSERT_EQ(std::string(200000, '1'), Get(1, "big1"));
|
|
ASSERT_EQ(std::string(200000, '2'), Get(1, "big2"));
|
|
ASSERT_EQ(std::string(10, '3'), Get(1, "small3"));
|
|
ASSERT_EQ(std::string(10, '4'), Get(1, "small4"));
|
|
ASSERT_GT(NumTableFilesAtLevel(0, 1), 1);
|
|
} while (ChangeWalOptions());
|
|
}
|
|
|
|
// In https://reviews.facebook.net/D20661 we change
|
|
// recovery behavior: previously for each log file each column family
|
|
// memtable was flushed, even it was empty. Now it's changed:
|
|
// we try to create the smallest number of table files by merging
|
|
// updates from multiple logs
|
|
TEST_F(DBWALTest, RecoverCheckFileAmountWithSmallWriteBuffer) {
|
|
Options options = CurrentOptions();
|
|
options.write_buffer_size = 5000000;
|
|
CreateAndReopenWithCF({"pikachu", "dobrynia", "nikitich"}, options);
|
|
|
|
// Since we will reopen DB with smaller write_buffer_size,
|
|
// each key will go to new SST file
|
|
ASSERT_OK(Put(1, Key(10), DummyString(1000000)));
|
|
ASSERT_OK(Put(1, Key(10), DummyString(1000000)));
|
|
ASSERT_OK(Put(1, Key(10), DummyString(1000000)));
|
|
ASSERT_OK(Put(1, Key(10), DummyString(1000000)));
|
|
|
|
ASSERT_OK(Put(3, Key(10), DummyString(1)));
|
|
// Make 'dobrynia' to be flushed and new WAL file to be created
|
|
ASSERT_OK(Put(2, Key(10), DummyString(7500000)));
|
|
ASSERT_OK(Put(2, Key(1), DummyString(1)));
|
|
ASSERT_OK(dbfull()->TEST_WaitForFlushMemTable(handles_[2]));
|
|
{
|
|
auto tables = ListTableFiles(env_, dbname_);
|
|
ASSERT_EQ(tables.size(), static_cast<size_t>(1));
|
|
// Make sure 'dobrynia' was flushed: check sst files amount
|
|
ASSERT_EQ(GetNumberOfSstFilesForColumnFamily(db_, "dobrynia"),
|
|
static_cast<uint64_t>(1));
|
|
}
|
|
// New WAL file
|
|
ASSERT_OK(Put(1, Key(1), DummyString(1)));
|
|
ASSERT_OK(Put(1, Key(1), DummyString(1)));
|
|
ASSERT_OK(Put(3, Key(10), DummyString(1)));
|
|
ASSERT_OK(Put(3, Key(10), DummyString(1)));
|
|
ASSERT_OK(Put(3, Key(10), DummyString(1)));
|
|
|
|
options.write_buffer_size = 4096;
|
|
options.arena_block_size = 4096;
|
|
ReopenWithColumnFamilies({"default", "pikachu", "dobrynia", "nikitich"},
|
|
options);
|
|
{
|
|
// No inserts => default is empty
|
|
ASSERT_EQ(GetNumberOfSstFilesForColumnFamily(db_, "default"),
|
|
static_cast<uint64_t>(0));
|
|
// First 4 keys goes to separate SSTs + 1 more SST for 2 smaller keys
|
|
ASSERT_EQ(GetNumberOfSstFilesForColumnFamily(db_, "pikachu"),
|
|
static_cast<uint64_t>(5));
|
|
// 1 SST for big key + 1 SST for small one
|
|
ASSERT_EQ(GetNumberOfSstFilesForColumnFamily(db_, "dobrynia"),
|
|
static_cast<uint64_t>(2));
|
|
// 1 SST for all keys
|
|
ASSERT_EQ(GetNumberOfSstFilesForColumnFamily(db_, "nikitich"),
|
|
static_cast<uint64_t>(1));
|
|
}
|
|
}
|
|
|
|
// In https://reviews.facebook.net/D20661 we change
|
|
// recovery behavior: previously for each log file each column family
|
|
// memtable was flushed, even it wasn't empty. Now it's changed:
|
|
// we try to create the smallest number of table files by merging
|
|
// updates from multiple logs
|
|
TEST_F(DBWALTest, RecoverCheckFileAmount) {
|
|
Options options = CurrentOptions();
|
|
options.write_buffer_size = 100000;
|
|
options.arena_block_size = 4 * 1024;
|
|
options.avoid_flush_during_recovery = false;
|
|
CreateAndReopenWithCF({"pikachu", "dobrynia", "nikitich"}, options);
|
|
|
|
ASSERT_OK(Put(0, Key(1), DummyString(1)));
|
|
ASSERT_OK(Put(1, Key(1), DummyString(1)));
|
|
ASSERT_OK(Put(2, Key(1), DummyString(1)));
|
|
|
|
// Make 'nikitich' memtable to be flushed
|
|
ASSERT_OK(Put(3, Key(10), DummyString(1002400)));
|
|
ASSERT_OK(Put(3, Key(1), DummyString(1)));
|
|
ASSERT_OK(dbfull()->TEST_WaitForFlushMemTable(handles_[3]));
|
|
// 4 memtable are not flushed, 1 sst file
|
|
{
|
|
auto tables = ListTableFiles(env_, dbname_);
|
|
ASSERT_EQ(tables.size(), static_cast<size_t>(1));
|
|
ASSERT_EQ(GetNumberOfSstFilesForColumnFamily(db_, "nikitich"),
|
|
static_cast<uint64_t>(1));
|
|
}
|
|
// Memtable for 'nikitich' has flushed, new WAL file has opened
|
|
// 4 memtable still not flushed
|
|
|
|
// Write to new WAL file
|
|
ASSERT_OK(Put(0, Key(1), DummyString(1)));
|
|
ASSERT_OK(Put(1, Key(1), DummyString(1)));
|
|
ASSERT_OK(Put(2, Key(1), DummyString(1)));
|
|
|
|
// Fill up 'nikitich' one more time
|
|
ASSERT_OK(Put(3, Key(10), DummyString(1002400)));
|
|
// make it flush
|
|
ASSERT_OK(Put(3, Key(1), DummyString(1)));
|
|
ASSERT_OK(dbfull()->TEST_WaitForFlushMemTable(handles_[3]));
|
|
// There are still 4 memtable not flushed, and 2 sst tables
|
|
ASSERT_OK(Put(0, Key(1), DummyString(1)));
|
|
ASSERT_OK(Put(1, Key(1), DummyString(1)));
|
|
ASSERT_OK(Put(2, Key(1), DummyString(1)));
|
|
|
|
{
|
|
auto tables = ListTableFiles(env_, dbname_);
|
|
ASSERT_EQ(tables.size(), static_cast<size_t>(2));
|
|
ASSERT_EQ(GetNumberOfSstFilesForColumnFamily(db_, "nikitich"),
|
|
static_cast<uint64_t>(2));
|
|
}
|
|
|
|
ReopenWithColumnFamilies({"default", "pikachu", "dobrynia", "nikitich"},
|
|
options);
|
|
{
|
|
std::vector<uint64_t> table_files = ListTableFiles(env_, dbname_);
|
|
// Check, that records for 'default', 'dobrynia' and 'pikachu' from
|
|
// first, second and third WALs went to the same SST.
|
|
// So, there is 6 SSTs: three for 'nikitich', one for 'default', one for
|
|
// 'dobrynia', one for 'pikachu'
|
|
ASSERT_EQ(GetNumberOfSstFilesForColumnFamily(db_, "default"),
|
|
static_cast<uint64_t>(1));
|
|
ASSERT_EQ(GetNumberOfSstFilesForColumnFamily(db_, "nikitich"),
|
|
static_cast<uint64_t>(3));
|
|
ASSERT_EQ(GetNumberOfSstFilesForColumnFamily(db_, "dobrynia"),
|
|
static_cast<uint64_t>(1));
|
|
ASSERT_EQ(GetNumberOfSstFilesForColumnFamily(db_, "pikachu"),
|
|
static_cast<uint64_t>(1));
|
|
}
|
|
}
|
|
|
|
TEST_F(DBWALTest, SyncMultipleLogs) {
|
|
const uint64_t kNumBatches = 2;
|
|
const int kBatchSize = 1000;
|
|
|
|
Options options = CurrentOptions();
|
|
options.create_if_missing = true;
|
|
options.write_buffer_size = 4096;
|
|
Reopen(options);
|
|
|
|
WriteBatch batch;
|
|
WriteOptions wo;
|
|
wo.sync = true;
|
|
|
|
for (uint64_t b = 0; b < kNumBatches; b++) {
|
|
batch.Clear();
|
|
for (int i = 0; i < kBatchSize; i++) {
|
|
ASSERT_OK(batch.Put(Key(i), DummyString(128)));
|
|
}
|
|
|
|
ASSERT_OK(dbfull()->Write(wo, &batch));
|
|
}
|
|
|
|
ASSERT_OK(dbfull()->SyncWAL());
|
|
}
|
|
|
|
// Github issue 1339. Prior the fix we read sequence id from the first log to
|
|
// a local variable, then keep increase the variable as we replay logs,
|
|
// ignoring actual sequence id of the records. This is incorrect if some writes
|
|
// come with WAL disabled.
|
|
TEST_F(DBWALTest, PartOfWritesWithWALDisabled) {
|
|
std::unique_ptr<FaultInjectionTestEnv> fault_env(
|
|
new FaultInjectionTestEnv(env_));
|
|
Options options = CurrentOptions();
|
|
options.env = fault_env.get();
|
|
options.disable_auto_compactions = true;
|
|
WriteOptions wal_on, wal_off;
|
|
wal_on.sync = true;
|
|
wal_on.disableWAL = false;
|
|
wal_off.disableWAL = true;
|
|
CreateAndReopenWithCF({"dummy"}, options);
|
|
ASSERT_OK(Put(1, "dummy", "d1", wal_on)); // seq id 1
|
|
ASSERT_OK(Put(1, "dummy", "d2", wal_off));
|
|
ASSERT_OK(Put(1, "dummy", "d3", wal_off));
|
|
ASSERT_OK(Put(0, "key", "v4", wal_on)); // seq id 4
|
|
ASSERT_OK(Flush(0));
|
|
ASSERT_OK(Put(0, "key", "v5", wal_on)); // seq id 5
|
|
ASSERT_EQ("v5", Get(0, "key"));
|
|
ASSERT_OK(dbfull()->FlushWAL(false));
|
|
// Simulate a crash.
|
|
fault_env->SetFilesystemActive(false);
|
|
Close();
|
|
fault_env->ResetState();
|
|
ReopenWithColumnFamilies({"default", "dummy"}, options);
|
|
// Prior to the fix, we may incorrectly recover "v5" with sequence id = 3.
|
|
ASSERT_EQ("v5", Get(0, "key"));
|
|
// Destroy DB before destruct fault_env.
|
|
Destroy(options);
|
|
}
|
|
|
|
//
|
|
// Test WAL recovery for the various modes available
|
|
//
|
|
class RecoveryTestHelper {
|
|
public:
|
|
// Number of WAL files to generate
|
|
static constexpr int kWALFilesCount = 10;
|
|
// Starting number for the WAL file name like 00010.log
|
|
static constexpr int kWALFileOffset = 10;
|
|
// Keys to be written per WAL file
|
|
static constexpr int kKeysPerWALFile = 133;
|
|
// Size of the value
|
|
static constexpr int kValueSize = 96;
|
|
|
|
// Create WAL files with values filled in
|
|
static void FillData(DBWALTestBase* test, const Options& options,
|
|
const size_t wal_count, size_t* count) {
|
|
// Calling internal functions requires sanitized options.
|
|
Options sanitized_options = SanitizeOptions(test->dbname_, options);
|
|
const ImmutableDBOptions db_options(sanitized_options);
|
|
|
|
*count = 0;
|
|
|
|
std::shared_ptr<Cache> table_cache = NewLRUCache(50, 0);
|
|
FileOptions file_options;
|
|
WriteBufferManager write_buffer_manager(db_options.db_write_buffer_size);
|
|
|
|
std::unique_ptr<VersionSet> versions;
|
|
std::unique_ptr<WalManager> wal_manager;
|
|
WriteController write_controller;
|
|
|
|
versions.reset(new VersionSet(
|
|
test->dbname_, &db_options, file_options, table_cache.get(),
|
|
&write_buffer_manager, &write_controller,
|
|
/*block_cache_tracer=*/nullptr,
|
|
/*io_tracer=*/nullptr, /*db_id*/ "", /*db_session_id*/ ""));
|
|
|
|
wal_manager.reset(
|
|
new WalManager(db_options, file_options, /*io_tracer=*/nullptr));
|
|
|
|
std::unique_ptr<log::Writer> current_log_writer;
|
|
|
|
for (size_t j = kWALFileOffset; j < wal_count + kWALFileOffset; j++) {
|
|
uint64_t current_log_number = j;
|
|
std::string fname = LogFileName(test->dbname_, current_log_number);
|
|
std::unique_ptr<WritableFileWriter> file_writer;
|
|
ASSERT_OK(WritableFileWriter::Create(db_options.env->GetFileSystem(),
|
|
fname, file_options, &file_writer,
|
|
nullptr));
|
|
log::Writer* log_writer =
|
|
new log::Writer(std::move(file_writer), current_log_number,
|
|
db_options.recycle_log_file_num > 0, false,
|
|
db_options.wal_compression);
|
|
ASSERT_OK(log_writer->AddCompressionTypeRecord());
|
|
current_log_writer.reset(log_writer);
|
|
|
|
WriteBatch batch;
|
|
for (int i = 0; i < kKeysPerWALFile; i++) {
|
|
std::string key = "key" + std::to_string((*count)++);
|
|
std::string value = test->DummyString(kValueSize);
|
|
ASSERT_NE(current_log_writer.get(), nullptr);
|
|
uint64_t seq = versions->LastSequence() + 1;
|
|
batch.Clear();
|
|
ASSERT_OK(batch.Put(key, value));
|
|
WriteBatchInternal::SetSequence(&batch, seq);
|
|
ASSERT_OK(current_log_writer->AddRecord(
|
|
WriteBatchInternal::Contents(&batch)));
|
|
versions->SetLastAllocatedSequence(seq);
|
|
versions->SetLastPublishedSequence(seq);
|
|
versions->SetLastSequence(seq);
|
|
}
|
|
}
|
|
}
|
|
|
|
// Recreate and fill the store with some data
|
|
static size_t FillData(DBWALTestBase* test, Options* options) {
|
|
options->create_if_missing = true;
|
|
test->DestroyAndReopen(*options);
|
|
test->Close();
|
|
|
|
size_t count = 0;
|
|
FillData(test, *options, kWALFilesCount, &count);
|
|
return count;
|
|
}
|
|
|
|
// Read back all the keys we wrote and return the number of keys found
|
|
static size_t GetData(DBWALTestBase* test) {
|
|
size_t count = 0;
|
|
for (size_t i = 0; i < kWALFilesCount * kKeysPerWALFile; i++) {
|
|
if (test->Get("key" + std::to_string(i)) != "NOT_FOUND") {
|
|
++count;
|
|
}
|
|
}
|
|
return count;
|
|
}
|
|
|
|
// Manuall corrupt the specified WAL
|
|
static void CorruptWAL(DBWALTestBase* test, const Options& options,
|
|
const double off, const double len,
|
|
const int wal_file_id, const bool trunc = false) {
|
|
Env* env = options.env;
|
|
std::string fname = LogFileName(test->dbname_, wal_file_id);
|
|
uint64_t size;
|
|
ASSERT_OK(env->GetFileSize(fname, &size));
|
|
ASSERT_GT(size, 0);
|
|
#ifdef OS_WIN
|
|
// Windows disk cache behaves differently. When we truncate
|
|
// the original content is still in the cache due to the original
|
|
// handle is still open. Generally, in Windows, one prohibits
|
|
// shared access to files and it is not needed for WAL but we allow
|
|
// it to induce corruption at various tests.
|
|
test->Close();
|
|
#endif
|
|
if (trunc) {
|
|
ASSERT_OK(
|
|
test::TruncateFile(env, fname, static_cast<uint64_t>(size * off)));
|
|
} else {
|
|
ASSERT_OK(test::CorruptFile(env, fname, static_cast<int>(size * off + 8),
|
|
static_cast<int>(size * len), false));
|
|
}
|
|
}
|
|
};
|
|
|
|
class DBWALTestWithParams : public DBWALTestBase,
|
|
public ::testing::WithParamInterface<
|
|
std::tuple<bool, int, int, CompressionType>> {
|
|
public:
|
|
DBWALTestWithParams() : DBWALTestBase("/db_wal_test_with_params") {}
|
|
};
|
|
|
|
INSTANTIATE_TEST_CASE_P(
|
|
Wal, DBWALTestWithParams,
|
|
::testing::Combine(::testing::Bool(), ::testing::Range(0, 4, 1),
|
|
::testing::Range(RecoveryTestHelper::kWALFileOffset,
|
|
RecoveryTestHelper::kWALFileOffset +
|
|
RecoveryTestHelper::kWALFilesCount,
|
|
1),
|
|
::testing::Values(CompressionType::kNoCompression,
|
|
CompressionType::kZSTD)));
|
|
|
|
class DBWALTestWithParamsVaryingRecoveryMode
|
|
: public DBWALTestBase,
|
|
public ::testing::WithParamInterface<
|
|
std::tuple<bool, int, int, WALRecoveryMode, CompressionType>> {
|
|
public:
|
|
DBWALTestWithParamsVaryingRecoveryMode()
|
|
: DBWALTestBase("/db_wal_test_with_params_mode") {}
|
|
};
|
|
|
|
INSTANTIATE_TEST_CASE_P(
|
|
Wal, DBWALTestWithParamsVaryingRecoveryMode,
|
|
::testing::Combine(
|
|
::testing::Bool(), ::testing::Range(0, 4, 1),
|
|
::testing::Range(RecoveryTestHelper::kWALFileOffset,
|
|
RecoveryTestHelper::kWALFileOffset +
|
|
RecoveryTestHelper::kWALFilesCount,
|
|
1),
|
|
::testing::Values(WALRecoveryMode::kTolerateCorruptedTailRecords,
|
|
WALRecoveryMode::kAbsoluteConsistency,
|
|
WALRecoveryMode::kPointInTimeRecovery,
|
|
WALRecoveryMode::kSkipAnyCorruptedRecords),
|
|
::testing::Values(CompressionType::kNoCompression,
|
|
CompressionType::kZSTD)));
|
|
|
|
// Test scope:
|
|
// - We expect to open the data store when there is incomplete trailing writes
|
|
// at the end of any of the logs
|
|
// - We do not expect to open the data store for corruption
|
|
TEST_P(DBWALTestWithParams, kTolerateCorruptedTailRecords) {
|
|
bool trunc = std::get<0>(GetParam()); // Corruption style
|
|
// Corruption offset position
|
|
int corrupt_offset = std::get<1>(GetParam());
|
|
int wal_file_id = std::get<2>(GetParam()); // WAL file
|
|
|
|
// Fill data for testing
|
|
Options options = CurrentOptions();
|
|
const size_t row_count = RecoveryTestHelper::FillData(this, &options);
|
|
// test checksum failure or parsing
|
|
RecoveryTestHelper::CorruptWAL(this, options, corrupt_offset * .3,
|
|
/*len%=*/.1, wal_file_id, trunc);
|
|
|
|
options.wal_recovery_mode = WALRecoveryMode::kTolerateCorruptedTailRecords;
|
|
if (trunc) {
|
|
options.create_if_missing = false;
|
|
ASSERT_OK(TryReopen(options));
|
|
const size_t recovered_row_count = RecoveryTestHelper::GetData(this);
|
|
ASSERT_TRUE(corrupt_offset == 0 || recovered_row_count > 0);
|
|
ASSERT_LT(recovered_row_count, row_count);
|
|
} else {
|
|
ASSERT_NOK(TryReopen(options));
|
|
}
|
|
}
|
|
|
|
// Test scope:
|
|
// We don't expect the data store to be opened if there is any corruption
|
|
// (leading, middle or trailing -- incomplete writes or corruption)
|
|
TEST_P(DBWALTestWithParams, kAbsoluteConsistency) {
|
|
// Verify clean slate behavior
|
|
Options options = CurrentOptions();
|
|
const size_t row_count = RecoveryTestHelper::FillData(this, &options);
|
|
options.create_if_missing = false;
|
|
ASSERT_OK(TryReopen(options));
|
|
ASSERT_EQ(RecoveryTestHelper::GetData(this), row_count);
|
|
|
|
bool trunc = std::get<0>(GetParam()); // Corruption style
|
|
// Corruption offset position
|
|
int corrupt_offset = std::get<1>(GetParam());
|
|
int wal_file_id = std::get<2>(GetParam()); // WAL file
|
|
// WAL compression type
|
|
CompressionType compression_type = std::get<3>(GetParam());
|
|
options.wal_compression = compression_type;
|
|
|
|
if (trunc && corrupt_offset == 0) {
|
|
return;
|
|
}
|
|
|
|
// fill with new date
|
|
RecoveryTestHelper::FillData(this, &options);
|
|
// corrupt the wal
|
|
RecoveryTestHelper::CorruptWAL(this, options, corrupt_offset * .33,
|
|
/*len%=*/.1, wal_file_id, trunc);
|
|
// verify
|
|
options.wal_recovery_mode = WALRecoveryMode::kAbsoluteConsistency;
|
|
options.create_if_missing = false;
|
|
ASSERT_NOK(TryReopen(options));
|
|
}
|
|
|
|
// Test scope:
|
|
// We don't expect the data store to be opened if there is any inconsistency
|
|
// between WAL and SST files
|
|
TEST_F(DBWALTest, kPointInTimeRecoveryCFConsistency) {
|
|
Options options = CurrentOptions();
|
|
options.avoid_flush_during_recovery = true;
|
|
|
|
// Create DB with multiple column families.
|
|
CreateAndReopenWithCF({"one", "two"}, options);
|
|
ASSERT_OK(Put(1, "key1", "val1"));
|
|
ASSERT_OK(Put(2, "key2", "val2"));
|
|
|
|
// Record the offset at this point
|
|
Env* env = options.env;
|
|
uint64_t wal_file_id = dbfull()->TEST_LogfileNumber();
|
|
std::string fname = LogFileName(dbname_, wal_file_id);
|
|
uint64_t offset_to_corrupt;
|
|
ASSERT_OK(env->GetFileSize(fname, &offset_to_corrupt));
|
|
ASSERT_GT(offset_to_corrupt, 0);
|
|
|
|
ASSERT_OK(Put(1, "key3", "val3"));
|
|
// Corrupt WAL at location of key3
|
|
ASSERT_OK(test::CorruptFile(env, fname, static_cast<int>(offset_to_corrupt),
|
|
4, false));
|
|
ASSERT_OK(Put(2, "key4", "val4"));
|
|
ASSERT_OK(Put(1, "key5", "val5"));
|
|
ASSERT_OK(Flush(2));
|
|
|
|
// PIT recovery & verify
|
|
options.wal_recovery_mode = WALRecoveryMode::kPointInTimeRecovery;
|
|
ASSERT_NOK(TryReopenWithColumnFamilies({"default", "one", "two"}, options));
|
|
}
|
|
|
|
TEST_F(DBWALTest, RaceInstallFlushResultsWithWalObsoletion) {
|
|
Options options = CurrentOptions();
|
|
options.env = env_;
|
|
options.track_and_verify_wals_in_manifest = true;
|
|
// The following make sure there are two bg flush threads.
|
|
options.max_background_jobs = 8;
|
|
|
|
DestroyAndReopen(options);
|
|
|
|
const std::string cf1_name("cf1");
|
|
CreateAndReopenWithCF({cf1_name}, options);
|
|
assert(handles_.size() == 2);
|
|
|
|
{
|
|
dbfull()->TEST_LockMutex();
|
|
ASSERT_LE(2, dbfull()->GetBGJobLimits().max_flushes);
|
|
dbfull()->TEST_UnlockMutex();
|
|
}
|
|
|
|
ASSERT_OK(dbfull()->PauseBackgroundWork());
|
|
|
|
ASSERT_OK(db_->Put(WriteOptions(), handles_[1], "foo", "value"));
|
|
ASSERT_OK(db_->Put(WriteOptions(), "foo", "value"));
|
|
|
|
ASSERT_OK(dbfull()->TEST_FlushMemTable(
|
|
/*wait=*/false, /*allow_write_stall=*/true, handles_[1]));
|
|
|
|
ASSERT_OK(db_->Put(WriteOptions(), "foo", "value"));
|
|
|
|
ASSERT_OK(dbfull()->TEST_FlushMemTable(
|
|
/*wait=*/false, /*allow_write_stall=*/true, handles_[0]));
|
|
|
|
bool called = false;
|
|
std::atomic<int> bg_flush_threads{0};
|
|
std::atomic<bool> wal_synced{false};
|
|
SyncPoint::GetInstance()->DisableProcessing();
|
|
SyncPoint::GetInstance()->ClearAllCallBacks();
|
|
SyncPoint::GetInstance()->SetCallBack(
|
|
"DBImpl::BackgroundCallFlush:start", [&](void* /*arg*/) {
|
|
int cur = bg_flush_threads.load();
|
|
int desired = cur + 1;
|
|
if (cur > 0 ||
|
|
!bg_flush_threads.compare_exchange_strong(cur, desired)) {
|
|
while (!wal_synced.load()) {
|
|
// Wait until the other bg flush thread finishes committing WAL sync
|
|
// operation to the MANIFEST.
|
|
}
|
|
}
|
|
});
|
|
SyncPoint::GetInstance()->SetCallBack(
|
|
"DBImpl::FlushMemTableToOutputFile:CommitWal:1",
|
|
[&](void* /*arg*/) { wal_synced.store(true); });
|
|
// This callback will be called when the first bg flush thread reaches the
|
|
// point before entering the MANIFEST write queue after flushing the SST
|
|
// file.
|
|
// The purpose of the sync points here is to ensure both bg flush threads
|
|
// finish computing `min_wal_number_to_keep` before any of them updates the
|
|
// `log_number` for the column family that's being flushed.
|
|
SyncPoint::GetInstance()->SetCallBack(
|
|
"MemTableList::TryInstallMemtableFlushResults:AfterComputeMinWalToKeep",
|
|
[&](void* /*arg*/) {
|
|
dbfull()->mutex()->AssertHeld();
|
|
if (!called) {
|
|
// We are the first bg flush thread in the MANIFEST write queue.
|
|
// We set up the dependency between sync points for two threads that
|
|
// will be executing the same code.
|
|
// For the interleaving of events, see
|
|
// https://github.com/facebook/rocksdb/pull/9715.
|
|
// bg flush thread1 will release the db mutex while in the MANIFEST
|
|
// write queue. In the meantime, bg flush thread2 locks db mutex and
|
|
// computes the min_wal_number_to_keep (before thread1 writes to
|
|
// MANIFEST thus before cf1->log_number is updated). Bg thread2 joins
|
|
// the MANIFEST write queue afterwards and bg flush thread1 proceeds
|
|
// with writing to MANIFEST.
|
|
called = true;
|
|
SyncPoint::GetInstance()->LoadDependency({
|
|
{"VersionSet::LogAndApply:WriteManifestStart",
|
|
"DBWALTest::RaceInstallFlushResultsWithWalObsoletion:BgFlush2"},
|
|
{"DBWALTest::RaceInstallFlushResultsWithWalObsoletion:BgFlush2",
|
|
"VersionSet::LogAndApply:WriteManifest"},
|
|
});
|
|
} else {
|
|
// The other bg flush thread has already been in the MANIFEST write
|
|
// queue, and we are after.
|
|
TEST_SYNC_POINT(
|
|
"DBWALTest::RaceInstallFlushResultsWithWalObsoletion:BgFlush2");
|
|
}
|
|
});
|
|
SyncPoint::GetInstance()->EnableProcessing();
|
|
|
|
ASSERT_OK(dbfull()->ContinueBackgroundWork());
|
|
|
|
ASSERT_OK(dbfull()->TEST_WaitForFlushMemTable(handles_[0]));
|
|
ASSERT_OK(dbfull()->TEST_WaitForFlushMemTable(handles_[1]));
|
|
|
|
ASSERT_TRUE(called);
|
|
|
|
Close();
|
|
|
|
SyncPoint::GetInstance()->DisableProcessing();
|
|
SyncPoint::GetInstance()->ClearAllCallBacks();
|
|
|
|
DB* db1 = nullptr;
|
|
Status s = DB::OpenForReadOnly(options, dbname_, &db1);
|
|
ASSERT_OK(s);
|
|
assert(db1);
|
|
delete db1;
|
|
}
|
|
|
|
TEST_F(DBWALTest, FixSyncWalOnObseletedWalWithNewManifestCausingMissingWAL) {
|
|
Options options = CurrentOptions();
|
|
options.track_and_verify_wals_in_manifest = true;
|
|
DestroyAndReopen(options);
|
|
|
|
// Accumulate memtable m1 and create the 1st wal (i.e, 4.log)
|
|
ASSERT_OK(Put(Key(1), ""));
|
|
ASSERT_OK(Put(Key(2), ""));
|
|
ASSERT_OK(Put(Key(3), ""));
|
|
|
|
const std::string wal_file_path = db_->GetName() + "/000004.log";
|
|
|
|
// Coerce the following sequence of events:
|
|
// (1) Flush() marks 4.log to be obsoleted, 8.log to be the latest (i.e,
|
|
// active) log and release the lock
|
|
// (2) SyncWAL() proceeds with the lock. It
|
|
// creates a new manifest and syncs all the inactive wals before the latest
|
|
// (i.e, active log), which is 4.log. Note that SyncWAL() is not aware of the
|
|
// fact that 4.log has marked as to be obseleted. Prior to the fix, such wal
|
|
// sync will then add a WAL addition record of 4.log to the new manifest
|
|
// without any special treatment.
|
|
// (3) BackgroundFlush() will eventually purge 4.log.
|
|
bool wal_synced = false;
|
|
SyncPoint::GetInstance()->SetCallBack(
|
|
"FindObsoleteFiles::PostMutexUnlock", [&](void*) {
|
|
ASSERT_OK(env_->FileExists(wal_file_path));
|
|
|
|
SyncPoint::GetInstance()->SetCallBack(
|
|
"VersionSet::ProcessManifestWrites:"
|
|
"PostDecidingCreateNewManifestOrNot",
|
|
[&](void* arg) {
|
|
bool* new_descriptor_log = (bool*)arg;
|
|
*new_descriptor_log = true;
|
|
});
|
|
|
|
ASSERT_OK(db_->SyncWAL());
|
|
wal_synced = true;
|
|
});
|
|
|
|
SyncPoint::GetInstance()->SetCallBack(
|
|
"DBImpl::DeleteObsoleteFileImpl:AfterDeletion2", [&](void* arg) {
|
|
std::string* file_name = (std::string*)arg;
|
|
if (*file_name == wal_file_path) {
|
|
TEST_SYNC_POINT(
|
|
"DBWALTest::"
|
|
"FixSyncWalOnObseletedWalWithNewManifestCausingMissingWAL::"
|
|
"PostDeleteWAL");
|
|
}
|
|
});
|
|
|
|
SyncPoint::GetInstance()->LoadDependency(
|
|
{{"DBImpl::BackgroundCallFlush:FilesFound",
|
|
"PreConfrimObsoletedWALSynced"},
|
|
{"DBWALTest::FixSyncWalOnObseletedWalWithNewManifestCausingMissingWAL::"
|
|
"PostDeleteWAL",
|
|
"PreConfrimWALDeleted"}});
|
|
|
|
SyncPoint::GetInstance()->EnableProcessing();
|
|
|
|
ASSERT_OK(Flush());
|
|
|
|
TEST_SYNC_POINT("PreConfrimObsoletedWALSynced");
|
|
ASSERT_TRUE(wal_synced);
|
|
|
|
TEST_SYNC_POINT("PreConfrimWALDeleted");
|
|
// BackgroundFlush() purged 4.log
|
|
// because the memtable associated with the WAL was flushed and new WAL was
|
|
// created (i.e, 8.log)
|
|
ASSERT_TRUE(env_->FileExists(wal_file_path).IsNotFound());
|
|
|
|
SyncPoint::GetInstance()->ClearAllCallBacks();
|
|
SyncPoint::GetInstance()->DisableProcessing();
|
|
|
|
// To verify the corruption of "Missing WAL with log number: 4" under
|
|
// `options.track_and_verify_wals_in_manifest = true` is fixed.
|
|
//
|
|
// Before the fix, `db_->SyncWAL()` will sync and record WAL addtion of the
|
|
// obseleted WAL 4.log in a new manifest without any special treament.
|
|
// This will result in missing-wal corruption in DB::Reopen().
|
|
Status s = TryReopen(options);
|
|
EXPECT_OK(s);
|
|
}
|
|
|
|
// Test scope:
|
|
// - We expect to open data store under all circumstances
|
|
// - We expect only data upto the point where the first error was encountered
|
|
TEST_P(DBWALTestWithParams, kPointInTimeRecovery) {
|
|
const int maxkeys =
|
|
RecoveryTestHelper::kWALFilesCount * RecoveryTestHelper::kKeysPerWALFile;
|
|
|
|
bool trunc = std::get<0>(GetParam()); // Corruption style
|
|
// Corruption offset position
|
|
int corrupt_offset = std::get<1>(GetParam());
|
|
int wal_file_id = std::get<2>(GetParam()); // WAL file
|
|
// WAL compression type
|
|
CompressionType compression_type = std::get<3>(GetParam());
|
|
|
|
// Fill data for testing
|
|
Options options = CurrentOptions();
|
|
options.wal_compression = compression_type;
|
|
const size_t row_count = RecoveryTestHelper::FillData(this, &options);
|
|
|
|
// Corrupt the wal
|
|
// The offset here was 0.3 which cuts off right at the end of a
|
|
// valid fragment after wal zstd compression checksum is enabled,
|
|
// so changed the value to 0.33.
|
|
RecoveryTestHelper::CorruptWAL(this, options, corrupt_offset * .33,
|
|
/*len%=*/.1, wal_file_id, trunc);
|
|
|
|
// Verify
|
|
options.wal_recovery_mode = WALRecoveryMode::kPointInTimeRecovery;
|
|
options.create_if_missing = false;
|
|
ASSERT_OK(TryReopen(options));
|
|
|
|
// Probe data for invariants
|
|
size_t recovered_row_count = RecoveryTestHelper::GetData(this);
|
|
ASSERT_LT(recovered_row_count, row_count);
|
|
|
|
// Verify a prefix of keys were recovered. But not in the case of full WAL
|
|
// truncation, because we have no way to know there was a corruption when
|
|
// truncation happened on record boundaries (preventing recovery holes in
|
|
// that case requires using `track_and_verify_wals_in_manifest`).
|
|
if (!trunc || corrupt_offset != 0) {
|
|
bool expect_data = true;
|
|
for (size_t k = 0; k < maxkeys; ++k) {
|
|
bool found = Get("key" + std::to_string(k)) != "NOT_FOUND";
|
|
if (expect_data && !found) {
|
|
expect_data = false;
|
|
}
|
|
ASSERT_EQ(found, expect_data);
|
|
}
|
|
}
|
|
|
|
const size_t min = RecoveryTestHelper::kKeysPerWALFile *
|
|
(wal_file_id - RecoveryTestHelper::kWALFileOffset);
|
|
ASSERT_GE(recovered_row_count, min);
|
|
if (!trunc && corrupt_offset != 0) {
|
|
const size_t max = RecoveryTestHelper::kKeysPerWALFile *
|
|
(wal_file_id - RecoveryTestHelper::kWALFileOffset + 1);
|
|
ASSERT_LE(recovered_row_count, max);
|
|
}
|
|
}
|
|
|
|
// Test scope:
|
|
// - We expect to open the data store under all scenarios
|
|
// - We expect to have recovered records past the corruption zone
|
|
TEST_P(DBWALTestWithParams, kSkipAnyCorruptedRecords) {
|
|
bool trunc = std::get<0>(GetParam()); // Corruption style
|
|
// Corruption offset position
|
|
int corrupt_offset = std::get<1>(GetParam());
|
|
int wal_file_id = std::get<2>(GetParam()); // WAL file
|
|
// WAL compression type
|
|
CompressionType compression_type = std::get<3>(GetParam());
|
|
|
|
// Fill data for testing
|
|
Options options = CurrentOptions();
|
|
options.wal_compression = compression_type;
|
|
const size_t row_count = RecoveryTestHelper::FillData(this, &options);
|
|
|
|
// Corrupt the WAL
|
|
RecoveryTestHelper::CorruptWAL(this, options, corrupt_offset * .3,
|
|
/*len%=*/.1, wal_file_id, trunc);
|
|
|
|
// Verify behavior
|
|
options.wal_recovery_mode = WALRecoveryMode::kSkipAnyCorruptedRecords;
|
|
options.create_if_missing = false;
|
|
ASSERT_OK(TryReopen(options));
|
|
|
|
// Probe data for invariants
|
|
size_t recovered_row_count = RecoveryTestHelper::GetData(this);
|
|
ASSERT_LT(recovered_row_count, row_count);
|
|
|
|
if (!trunc) {
|
|
ASSERT_TRUE(corrupt_offset != 0 || recovered_row_count > 0);
|
|
}
|
|
}
|
|
|
|
TEST_F(DBWALTest, AvoidFlushDuringRecovery) {
|
|
Options options = CurrentOptions();
|
|
options.disable_auto_compactions = true;
|
|
options.avoid_flush_during_recovery = false;
|
|
|
|
// Test with flush after recovery.
|
|
Reopen(options);
|
|
ASSERT_OK(Put("foo", "v1"));
|
|
ASSERT_OK(Put("bar", "v2"));
|
|
ASSERT_OK(Flush());
|
|
ASSERT_OK(Put("foo", "v3"));
|
|
ASSERT_OK(Put("bar", "v4"));
|
|
ASSERT_EQ(1, TotalTableFiles());
|
|
// Reopen DB. Check if WAL logs flushed.
|
|
Reopen(options);
|
|
ASSERT_EQ("v3", Get("foo"));
|
|
ASSERT_EQ("v4", Get("bar"));
|
|
ASSERT_EQ(2, TotalTableFiles());
|
|
|
|
// Test without flush after recovery.
|
|
options.avoid_flush_during_recovery = true;
|
|
DestroyAndReopen(options);
|
|
ASSERT_OK(Put("foo", "v5"));
|
|
ASSERT_OK(Put("bar", "v6"));
|
|
ASSERT_OK(Flush());
|
|
ASSERT_OK(Put("foo", "v7"));
|
|
ASSERT_OK(Put("bar", "v8"));
|
|
ASSERT_EQ(1, TotalTableFiles());
|
|
// Reopen DB. WAL logs should not be flushed this time.
|
|
Reopen(options);
|
|
ASSERT_EQ("v7", Get("foo"));
|
|
ASSERT_EQ("v8", Get("bar"));
|
|
ASSERT_EQ(1, TotalTableFiles());
|
|
|
|
// Force flush with allow_2pc.
|
|
options.avoid_flush_during_recovery = true;
|
|
options.allow_2pc = true;
|
|
ASSERT_OK(Put("foo", "v9"));
|
|
ASSERT_OK(Put("bar", "v10"));
|
|
ASSERT_OK(Flush());
|
|
ASSERT_OK(Put("foo", "v11"));
|
|
ASSERT_OK(Put("bar", "v12"));
|
|
Reopen(options);
|
|
ASSERT_EQ("v11", Get("foo"));
|
|
ASSERT_EQ("v12", Get("bar"));
|
|
ASSERT_EQ(3, TotalTableFiles());
|
|
}
|
|
|
|
TEST_F(DBWALTest, WalCleanupAfterAvoidFlushDuringRecovery) {
|
|
// Verifies WAL files that were present during recovery, but not flushed due
|
|
// to avoid_flush_during_recovery, will be considered for deletion at a later
|
|
// stage. We check at least one such file is deleted during Flush().
|
|
Options options = CurrentOptions();
|
|
options.disable_auto_compactions = true;
|
|
options.avoid_flush_during_recovery = true;
|
|
Reopen(options);
|
|
|
|
ASSERT_OK(Put("foo", "v1"));
|
|
Reopen(options);
|
|
for (int i = 0; i < 2; ++i) {
|
|
if (i > 0) {
|
|
// Flush() triggers deletion of obsolete tracked files
|
|
ASSERT_OK(Flush());
|
|
}
|
|
VectorLogPtr log_files;
|
|
ASSERT_OK(dbfull()->GetSortedWalFiles(log_files));
|
|
if (i == 0) {
|
|
ASSERT_GT(log_files.size(), 0);
|
|
} else {
|
|
ASSERT_EQ(0, log_files.size());
|
|
}
|
|
}
|
|
}
|
|
|
|
TEST_F(DBWALTest, RecoverWithoutFlush) {
|
|
Options options = CurrentOptions();
|
|
options.avoid_flush_during_recovery = true;
|
|
options.create_if_missing = false;
|
|
options.disable_auto_compactions = true;
|
|
options.write_buffer_size = 64 * 1024 * 1024;
|
|
|
|
size_t count = RecoveryTestHelper::FillData(this, &options);
|
|
auto validateData = [this, count]() {
|
|
for (size_t i = 0; i < count; i++) {
|
|
ASSERT_NE(Get("key" + std::to_string(i)), "NOT_FOUND");
|
|
}
|
|
};
|
|
Reopen(options);
|
|
validateData();
|
|
// Insert some data without flush
|
|
ASSERT_OK(Put("foo", "foo_v1"));
|
|
ASSERT_OK(Put("bar", "bar_v1"));
|
|
Reopen(options);
|
|
validateData();
|
|
ASSERT_EQ(Get("foo"), "foo_v1");
|
|
ASSERT_EQ(Get("bar"), "bar_v1");
|
|
// Insert again and reopen
|
|
ASSERT_OK(Put("foo", "foo_v2"));
|
|
ASSERT_OK(Put("bar", "bar_v2"));
|
|
Reopen(options);
|
|
validateData();
|
|
ASSERT_EQ(Get("foo"), "foo_v2");
|
|
ASSERT_EQ(Get("bar"), "bar_v2");
|
|
// manual flush and insert again
|
|
ASSERT_OK(Flush());
|
|
ASSERT_EQ(Get("foo"), "foo_v2");
|
|
ASSERT_EQ(Get("bar"), "bar_v2");
|
|
ASSERT_OK(Put("foo", "foo_v3"));
|
|
ASSERT_OK(Put("bar", "bar_v3"));
|
|
Reopen(options);
|
|
validateData();
|
|
ASSERT_EQ(Get("foo"), "foo_v3");
|
|
ASSERT_EQ(Get("bar"), "bar_v3");
|
|
}
|
|
|
|
TEST_F(DBWALTest, RecoverWithoutFlushMultipleCF) {
|
|
const std::string kSmallValue = "v";
|
|
const std::string kLargeValue = DummyString(1024);
|
|
Options options = CurrentOptions();
|
|
options.avoid_flush_during_recovery = true;
|
|
options.create_if_missing = false;
|
|
options.disable_auto_compactions = true;
|
|
|
|
auto countWalFiles = [this]() {
|
|
VectorLogPtr log_files;
|
|
if (!dbfull()->GetSortedWalFiles(log_files).ok()) {
|
|
return size_t{0};
|
|
}
|
|
return log_files.size();
|
|
};
|
|
|
|
// Create DB with multiple column families and multiple log files.
|
|
CreateAndReopenWithCF({"one", "two"}, options);
|
|
ASSERT_OK(Put(0, "key1", kSmallValue));
|
|
ASSERT_OK(Put(1, "key2", kLargeValue));
|
|
ASSERT_OK(Flush(1));
|
|
ASSERT_EQ(1, countWalFiles());
|
|
ASSERT_OK(Put(0, "key3", kSmallValue));
|
|
ASSERT_OK(Put(2, "key4", kLargeValue));
|
|
ASSERT_OK(Flush(2));
|
|
ASSERT_EQ(2, countWalFiles());
|
|
|
|
// Reopen, insert and flush.
|
|
options.db_write_buffer_size = 64 * 1024 * 1024;
|
|
ReopenWithColumnFamilies({"default", "one", "two"}, options);
|
|
ASSERT_EQ(Get(0, "key1"), kSmallValue);
|
|
ASSERT_EQ(Get(1, "key2"), kLargeValue);
|
|
ASSERT_EQ(Get(0, "key3"), kSmallValue);
|
|
ASSERT_EQ(Get(2, "key4"), kLargeValue);
|
|
// Insert more data.
|
|
ASSERT_OK(Put(0, "key5", kLargeValue));
|
|
ASSERT_OK(Put(1, "key6", kLargeValue));
|
|
ASSERT_EQ(3, countWalFiles());
|
|
ASSERT_OK(Flush(1));
|
|
ASSERT_OK(Put(2, "key7", kLargeValue));
|
|
ASSERT_OK(dbfull()->FlushWAL(false));
|
|
ASSERT_EQ(4, countWalFiles());
|
|
|
|
// Reopen twice and validate.
|
|
for (int i = 0; i < 2; i++) {
|
|
ReopenWithColumnFamilies({"default", "one", "two"}, options);
|
|
ASSERT_EQ(Get(0, "key1"), kSmallValue);
|
|
ASSERT_EQ(Get(1, "key2"), kLargeValue);
|
|
ASSERT_EQ(Get(0, "key3"), kSmallValue);
|
|
ASSERT_EQ(Get(2, "key4"), kLargeValue);
|
|
ASSERT_EQ(Get(0, "key5"), kLargeValue);
|
|
ASSERT_EQ(Get(1, "key6"), kLargeValue);
|
|
ASSERT_EQ(Get(2, "key7"), kLargeValue);
|
|
ASSERT_EQ(4, countWalFiles());
|
|
}
|
|
}
|
|
|
|
// In this test we are trying to do the following:
|
|
// 1. Create a DB with corrupted WAL log;
|
|
// 2. Open with avoid_flush_during_recovery = true;
|
|
// 3. Append more data without flushing, which creates new WAL log.
|
|
// 4. Open again. See if it can correctly handle previous corruption.
|
|
TEST_P(DBWALTestWithParamsVaryingRecoveryMode,
|
|
RecoverFromCorruptedWALWithoutFlush) {
|
|
const int kAppendKeys = 100;
|
|
Options options = CurrentOptions();
|
|
options.avoid_flush_during_recovery = true;
|
|
options.create_if_missing = false;
|
|
options.disable_auto_compactions = true;
|
|
options.write_buffer_size = 64 * 1024 * 1024;
|
|
|
|
auto getAll = [this]() {
|
|
std::vector<std::pair<std::string, std::string>> data;
|
|
ReadOptions ropt;
|
|
Iterator* iter = dbfull()->NewIterator(ropt);
|
|
for (iter->SeekToFirst(); iter->Valid(); iter->Next()) {
|
|
data.push_back(
|
|
std::make_pair(iter->key().ToString(), iter->value().ToString()));
|
|
}
|
|
delete iter;
|
|
return data;
|
|
};
|
|
|
|
bool trunc = std::get<0>(GetParam()); // Corruption style
|
|
// Corruption offset position
|
|
int corrupt_offset = std::get<1>(GetParam());
|
|
int wal_file_id = std::get<2>(GetParam()); // WAL file
|
|
WALRecoveryMode recovery_mode = std::get<3>(GetParam());
|
|
// WAL compression type
|
|
CompressionType compression_type = std::get<4>(GetParam());
|
|
|
|
options.wal_recovery_mode = recovery_mode;
|
|
options.wal_compression = compression_type;
|
|
// Create corrupted WAL
|
|
RecoveryTestHelper::FillData(this, &options);
|
|
RecoveryTestHelper::CorruptWAL(this, options, corrupt_offset * .3,
|
|
/*len%=*/.1, wal_file_id, trunc);
|
|
// Skip the test if DB won't open.
|
|
if (!TryReopen(options).ok()) {
|
|
ASSERT_TRUE(options.wal_recovery_mode ==
|
|
WALRecoveryMode::kAbsoluteConsistency ||
|
|
(!trunc && options.wal_recovery_mode ==
|
|
WALRecoveryMode::kTolerateCorruptedTailRecords));
|
|
return;
|
|
}
|
|
ASSERT_OK(TryReopen(options));
|
|
// Append some more data.
|
|
for (int k = 0; k < kAppendKeys; k++) {
|
|
std::string key = "extra_key" + std::to_string(k);
|
|
std::string value = DummyString(RecoveryTestHelper::kValueSize);
|
|
ASSERT_OK(Put(key, value));
|
|
}
|
|
// Save data for comparison.
|
|
auto data = getAll();
|
|
// Reopen. Verify data.
|
|
ASSERT_OK(TryReopen(options));
|
|
auto actual_data = getAll();
|
|
ASSERT_EQ(data, actual_data);
|
|
}
|
|
|
|
// Tests that total log size is recovered if we set
|
|
// avoid_flush_during_recovery=true.
|
|
// Flush should trigger if max_total_wal_size is reached.
|
|
TEST_F(DBWALTest, RestoreTotalLogSizeAfterRecoverWithoutFlush) {
|
|
auto test_listener = std::make_shared<FlushCounterListener>();
|
|
test_listener->expected_flush_reason = FlushReason::kWalFull;
|
|
|
|
constexpr size_t kKB = 1024;
|
|
constexpr size_t kMB = 1024 * 1024;
|
|
Options options = CurrentOptions();
|
|
options.avoid_flush_during_recovery = true;
|
|
options.max_total_wal_size = 1 * kMB;
|
|
options.listeners.push_back(test_listener);
|
|
// Have to open DB in multi-CF mode to trigger flush when
|
|
// max_total_wal_size is reached.
|
|
CreateAndReopenWithCF({"one"}, options);
|
|
// Write some keys and we will end up with one log file which is slightly
|
|
// smaller than 1MB.
|
|
std::string value_100k(100 * kKB, 'v');
|
|
std::string value_300k(300 * kKB, 'v');
|
|
ASSERT_OK(Put(0, "foo", "v1"));
|
|
for (int i = 0; i < 9; i++) {
|
|
ASSERT_OK(Put(1, "key" + std::to_string(i), value_100k));
|
|
}
|
|
// Get log files before reopen.
|
|
VectorLogPtr log_files_before;
|
|
ASSERT_OK(dbfull()->GetSortedWalFiles(log_files_before));
|
|
ASSERT_EQ(1, log_files_before.size());
|
|
uint64_t log_size_before = log_files_before[0]->SizeFileBytes();
|
|
ASSERT_GT(log_size_before, 900 * kKB);
|
|
ASSERT_LT(log_size_before, 1 * kMB);
|
|
ReopenWithColumnFamilies({"default", "one"}, options);
|
|
// Write one more value to make log larger than 1MB.
|
|
ASSERT_OK(Put(1, "bar", value_300k));
|
|
// Get log files again. A new log file will be opened.
|
|
VectorLogPtr log_files_after_reopen;
|
|
ASSERT_OK(dbfull()->GetSortedWalFiles(log_files_after_reopen));
|
|
ASSERT_EQ(2, log_files_after_reopen.size());
|
|
ASSERT_EQ(log_files_before[0]->LogNumber(),
|
|
log_files_after_reopen[0]->LogNumber());
|
|
ASSERT_GT(log_files_after_reopen[0]->SizeFileBytes() +
|
|
log_files_after_reopen[1]->SizeFileBytes(),
|
|
1 * kMB);
|
|
// Write one more key to trigger flush.
|
|
ASSERT_OK(Put(0, "foo", "v2"));
|
|
for (auto* h : handles_) {
|
|
ASSERT_OK(dbfull()->TEST_WaitForFlushMemTable(h));
|
|
}
|
|
// Flushed two column families.
|
|
ASSERT_EQ(2, test_listener->count.load());
|
|
}
|
|
|
|
#if defined(ROCKSDB_PLATFORM_POSIX)
|
|
#if defined(ROCKSDB_FALLOCATE_PRESENT)
|
|
// Tests that we will truncate the preallocated space of the last log from
|
|
// previous.
|
|
TEST_F(DBWALTest, TruncateLastLogAfterRecoverWithoutFlush) {
|
|
constexpr size_t kKB = 1024;
|
|
Options options = CurrentOptions();
|
|
options.env = env_;
|
|
options.avoid_flush_during_recovery = true;
|
|
if (mem_env_) {
|
|
ROCKSDB_GTEST_SKIP("Test requires non-mem environment");
|
|
return;
|
|
}
|
|
if (!IsFallocateSupported()) {
|
|
return;
|
|
}
|
|
|
|
DestroyAndReopen(options);
|
|
size_t preallocated_size =
|
|
dbfull()->TEST_GetWalPreallocateBlockSize(options.write_buffer_size);
|
|
ASSERT_OK(Put("foo", "v1"));
|
|
VectorLogPtr log_files_before;
|
|
ASSERT_OK(dbfull()->GetSortedWalFiles(log_files_before));
|
|
ASSERT_EQ(1, log_files_before.size());
|
|
auto& file_before = log_files_before[0];
|
|
ASSERT_LT(file_before->SizeFileBytes(), 1 * kKB);
|
|
// The log file has preallocated space.
|
|
ASSERT_GE(GetAllocatedFileSize(dbname_ + file_before->PathName()),
|
|
preallocated_size);
|
|
Reopen(options);
|
|
VectorLogPtr log_files_after;
|
|
ASSERT_OK(dbfull()->GetSortedWalFiles(log_files_after));
|
|
ASSERT_EQ(1, log_files_after.size());
|
|
ASSERT_LT(log_files_after[0]->SizeFileBytes(), 1 * kKB);
|
|
// The preallocated space should be truncated.
|
|
ASSERT_LT(GetAllocatedFileSize(dbname_ + file_before->PathName()),
|
|
preallocated_size);
|
|
}
|
|
// Tests that we will truncate the preallocated space of the last log from
|
|
// previous.
|
|
TEST_F(DBWALTest, TruncateLastLogAfterRecoverWithFlush) {
|
|
constexpr size_t kKB = 1024;
|
|
Options options = CurrentOptions();
|
|
options.env = env_;
|
|
options.avoid_flush_during_recovery = false;
|
|
options.avoid_flush_during_shutdown = true;
|
|
if (mem_env_) {
|
|
ROCKSDB_GTEST_SKIP("Test requires non-mem environment");
|
|
return;
|
|
}
|
|
if (!IsFallocateSupported()) {
|
|
return;
|
|
}
|
|
|
|
DestroyAndReopen(options);
|
|
size_t preallocated_size =
|
|
dbfull()->TEST_GetWalPreallocateBlockSize(options.write_buffer_size);
|
|
ASSERT_OK(Put("foo", "v1"));
|
|
VectorLogPtr log_files_before;
|
|
ASSERT_OK(dbfull()->GetSortedWalFiles(log_files_before));
|
|
ASSERT_EQ(1, log_files_before.size());
|
|
auto& file_before = log_files_before[0];
|
|
ASSERT_LT(file_before->SizeFileBytes(), 1 * kKB);
|
|
ASSERT_GE(GetAllocatedFileSize(dbname_ + file_before->PathName()),
|
|
preallocated_size);
|
|
// The log file has preallocated space.
|
|
Close();
|
|
|
|
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->LoadDependency(
|
|
{{"DBImpl::PurgeObsoleteFiles:Begin",
|
|
"DBWALTest::TruncateLastLogAfterRecoverWithFlush:AfterRecover"},
|
|
{"DBWALTest::TruncateLastLogAfterRecoverWithFlush:AfterTruncate",
|
|
"DBImpl::DeleteObsoleteFileImpl::BeforeDeletion"}});
|
|
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
|
|
port::Thread reopen_thread([&]() { Reopen(options); });
|
|
|
|
TEST_SYNC_POINT(
|
|
"DBWALTest::TruncateLastLogAfterRecoverWithFlush:AfterRecover");
|
|
// After the flush during Open, the log file should get deleted. However,
|
|
// if the process is in a crash loop, the log file may not get
|
|
// deleted and thte preallocated space will keep accumulating. So we need
|
|
// to ensure it gets trtuncated.
|
|
EXPECT_LT(GetAllocatedFileSize(dbname_ + file_before->PathName()),
|
|
preallocated_size);
|
|
TEST_SYNC_POINT(
|
|
"DBWALTest::TruncateLastLogAfterRecoverWithFlush:AfterTruncate");
|
|
reopen_thread.join();
|
|
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->DisableProcessing();
|
|
}
|
|
|
|
TEST_F(DBWALTest, TruncateLastLogAfterRecoverWALEmpty) {
|
|
Options options = CurrentOptions();
|
|
options.env = env_;
|
|
options.avoid_flush_during_recovery = false;
|
|
if (mem_env_ || encrypted_env_) {
|
|
ROCKSDB_GTEST_SKIP("Test requires non-mem/non-encrypted environment");
|
|
return;
|
|
}
|
|
if (!IsFallocateSupported()) {
|
|
return;
|
|
}
|
|
|
|
DestroyAndReopen(options);
|
|
size_t preallocated_size =
|
|
dbfull()->TEST_GetWalPreallocateBlockSize(options.write_buffer_size);
|
|
Close();
|
|
std::vector<std::string> filenames;
|
|
std::string last_log;
|
|
uint64_t last_log_num = 0;
|
|
ASSERT_OK(env_->GetChildren(dbname_, &filenames));
|
|
for (auto fname : filenames) {
|
|
uint64_t number;
|
|
FileType type;
|
|
if (ParseFileName(fname, &number, &type, nullptr)) {
|
|
if (type == kWalFile && number > last_log_num) {
|
|
last_log = fname;
|
|
}
|
|
}
|
|
}
|
|
ASSERT_NE(last_log, "");
|
|
last_log = dbname_ + '/' + last_log;
|
|
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->LoadDependency(
|
|
{{"DBImpl::PurgeObsoleteFiles:Begin",
|
|
"DBWALTest::TruncateLastLogAfterRecoverWithFlush:AfterRecover"},
|
|
{"DBWALTest::TruncateLastLogAfterRecoverWithFlush:AfterTruncate",
|
|
"DBImpl::DeleteObsoleteFileImpl::BeforeDeletion"}});
|
|
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->SetCallBack(
|
|
"PosixWritableFile::Close",
|
|
[](void* arg) { *(reinterpret_cast<size_t*>(arg)) = 0; });
|
|
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->EnableProcessing();
|
|
// Preallocate space for the empty log file. This could happen if WAL data
|
|
// was buffered in memory and the process crashed.
|
|
std::unique_ptr<WritableFile> log_file;
|
|
ASSERT_OK(env_->ReopenWritableFile(last_log, &log_file, EnvOptions()));
|
|
log_file->SetPreallocationBlockSize(preallocated_size);
|
|
log_file->PrepareWrite(0, 4096);
|
|
log_file.reset();
|
|
|
|
ASSERT_GE(GetAllocatedFileSize(last_log), preallocated_size);
|
|
|
|
port::Thread reopen_thread([&]() { Reopen(options); });
|
|
|
|
TEST_SYNC_POINT(
|
|
"DBWALTest::TruncateLastLogAfterRecoverWithFlush:AfterRecover");
|
|
// The preallocated space should be truncated.
|
|
EXPECT_LT(GetAllocatedFileSize(last_log), preallocated_size);
|
|
TEST_SYNC_POINT(
|
|
"DBWALTest::TruncateLastLogAfterRecoverWithFlush:AfterTruncate");
|
|
reopen_thread.join();
|
|
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->DisableProcessing();
|
|
ROCKSDB_NAMESPACE::SyncPoint::GetInstance()->ClearAllCallBacks();
|
|
}
|
|
|
|
TEST_F(DBWALTest, ReadOnlyRecoveryNoTruncate) {
|
|
constexpr size_t kKB = 1024;
|
|
Options options = CurrentOptions();
|
|
options.env = env_;
|
|
options.avoid_flush_during_recovery = true;
|
|
if (mem_env_) {
|
|
ROCKSDB_GTEST_SKIP("Test requires non-mem environment");
|
|
return;
|
|
}
|
|
if (!IsFallocateSupported()) {
|
|
return;
|
|
}
|
|
|
|
// create DB and close with file truncate disabled
|
|
std::atomic_bool enable_truncate{false};
|
|
|
|
SyncPoint::GetInstance()->SetCallBack(
|
|
"PosixWritableFile::Close", [&](void* arg) {
|
|
if (!enable_truncate) {
|
|
*(reinterpret_cast<size_t*>(arg)) = 0;
|
|
}
|
|
});
|
|
SyncPoint::GetInstance()->EnableProcessing();
|
|
|
|
DestroyAndReopen(options);
|
|
size_t preallocated_size =
|
|
dbfull()->TEST_GetWalPreallocateBlockSize(options.write_buffer_size);
|
|
ASSERT_OK(Put("foo", "v1"));
|
|
VectorLogPtr log_files_before;
|
|
ASSERT_OK(dbfull()->GetSortedWalFiles(log_files_before));
|
|
ASSERT_EQ(1, log_files_before.size());
|
|
auto& file_before = log_files_before[0];
|
|
ASSERT_LT(file_before->SizeFileBytes(), 1 * kKB);
|
|
// The log file has preallocated space.
|
|
auto db_size = GetAllocatedFileSize(dbname_ + file_before->PathName());
|
|
ASSERT_GE(db_size, preallocated_size);
|
|
Close();
|
|
|
|
// enable truncate and open DB as readonly, the file should not be truncated
|
|
// and DB size is not changed.
|
|
enable_truncate = true;
|
|
ASSERT_OK(ReadOnlyReopen(options));
|
|
VectorLogPtr log_files_after;
|
|
ASSERT_OK(dbfull()->GetSortedWalFiles(log_files_after));
|
|
ASSERT_EQ(1, log_files_after.size());
|
|
ASSERT_LT(log_files_after[0]->SizeFileBytes(), 1 * kKB);
|
|
ASSERT_EQ(log_files_after[0]->PathName(), file_before->PathName());
|
|
// The preallocated space should NOT be truncated.
|
|
// the DB size is almost the same.
|
|
ASSERT_NEAR(GetAllocatedFileSize(dbname_ + file_before->PathName()), db_size,
|
|
db_size / 100);
|
|
SyncPoint::GetInstance()->DisableProcessing();
|
|
SyncPoint::GetInstance()->ClearAllCallBacks();
|
|
}
|
|
#endif // ROCKSDB_FALLOCATE_PRESENT
|
|
#endif // ROCKSDB_PLATFORM_POSIX
|
|
|
|
TEST_F(DBWALTest, WalInManifestButNotInSortedWals) {
|
|
Options options = CurrentOptions();
|
|
options.track_and_verify_wals_in_manifest = true;
|
|
options.wal_recovery_mode = WALRecoveryMode::kAbsoluteConsistency;
|
|
|
|
// Build a way to make wal files selectively go missing
|
|
bool wals_go_missing = false;
|
|
struct MissingWalFs : public FileSystemWrapper {
|
|
MissingWalFs(const std::shared_ptr<FileSystem>& t,
|
|
bool* _wals_go_missing_flag)
|
|
: FileSystemWrapper(t), wals_go_missing_flag(_wals_go_missing_flag) {}
|
|
bool* wals_go_missing_flag;
|
|
IOStatus GetChildren(const std::string& dir, const IOOptions& io_opts,
|
|
std::vector<std::string>* r,
|
|
IODebugContext* dbg) override {
|
|
IOStatus s = target_->GetChildren(dir, io_opts, r, dbg);
|
|
if (s.ok() && *wals_go_missing_flag) {
|
|
for (size_t i = 0; i < r->size();) {
|
|
if (EndsWith(r->at(i), ".log")) {
|
|
r->erase(r->begin() + i);
|
|
} else {
|
|
++i;
|
|
}
|
|
}
|
|
}
|
|
return s;
|
|
}
|
|
const char* Name() const override { return "MissingWalFs"; }
|
|
};
|
|
auto my_fs =
|
|
std::make_shared<MissingWalFs>(env_->GetFileSystem(), &wals_go_missing);
|
|
std::unique_ptr<Env> my_env(NewCompositeEnv(my_fs));
|
|
options.env = my_env.get();
|
|
|
|
CreateAndReopenWithCF({"blah"}, options);
|
|
|
|
// Currently necessary to get a WAL tracked in manifest; see
|
|
// https://github.com/facebook/rocksdb/issues/10080
|
|
ASSERT_OK(Put(0, "x", "y"));
|
|
ASSERT_OK(db_->SyncWAL());
|
|
ASSERT_OK(Put(1, "x", "y"));
|
|
ASSERT_OK(db_->SyncWAL());
|
|
ASSERT_OK(Flush(1));
|
|
|
|
ASSERT_FALSE(dbfull()->GetVersionSet()->GetWalSet().GetWals().empty());
|
|
std::vector<std::unique_ptr<LogFile>> wals;
|
|
ASSERT_OK(db_->GetSortedWalFiles(wals));
|
|
wals_go_missing = true;
|
|
ASSERT_NOK(db_->GetSortedWalFiles(wals));
|
|
wals_go_missing = false;
|
|
Close();
|
|
}
|
|
|
|
#endif // ROCKSDB_LITE
|
|
|
|
TEST_F(DBWALTest, WalTermTest) {
|
|
Options options = CurrentOptions();
|
|
options.env = env_;
|
|
CreateAndReopenWithCF({"pikachu"}, options);
|
|
|
|
ASSERT_OK(Put(1, "foo", "bar"));
|
|
|
|
WriteOptions wo;
|
|
wo.sync = true;
|
|
wo.disableWAL = false;
|
|
|
|
WriteBatch batch;
|
|
ASSERT_OK(batch.Put("foo", "bar"));
|
|
batch.MarkWalTerminationPoint();
|
|
ASSERT_OK(batch.Put("foo2", "bar2"));
|
|
|
|
ASSERT_OK(dbfull()->Write(wo, &batch));
|
|
|
|
// make sure we can re-open it.
|
|
ASSERT_OK(TryReopenWithColumnFamilies({"default", "pikachu"}, options));
|
|
ASSERT_EQ("bar", Get(1, "foo"));
|
|
ASSERT_EQ("NOT_FOUND", Get(1, "foo2"));
|
|
}
|
|
|
|
#ifndef ROCKSDB_LITE
|
|
TEST_F(DBWALTest, GetCompressedWalsAfterSync) {
|
|
if (db_->GetOptions().wal_compression == kNoCompression) {
|
|
ROCKSDB_GTEST_BYPASS("stream compression not present");
|
|
return;
|
|
}
|
|
Options options = GetDefaultOptions();
|
|
options.wal_recovery_mode = WALRecoveryMode::kPointInTimeRecovery;
|
|
options.create_if_missing = true;
|
|
options.env = env_;
|
|
options.avoid_flush_during_recovery = true;
|
|
options.track_and_verify_wals_in_manifest = true;
|
|
// Enable WAL compression so that the newly-created WAL will be non-empty
|
|
// after DB open, even if point-in-time WAL recovery encounters no
|
|
// corruption.
|
|
options.wal_compression = kZSTD;
|
|
DestroyAndReopen(options);
|
|
|
|
// Write something to memtable and WAL so that log_empty_ will be false after
|
|
// next DB::Open().
|
|
ASSERT_OK(Put("a", "v"));
|
|
|
|
Reopen(options);
|
|
|
|
// New WAL is created, thanks to !log_empty_.
|
|
ASSERT_OK(dbfull()->TEST_SwitchWAL());
|
|
|
|
ASSERT_OK(Put("b", "v"));
|
|
|
|
ASSERT_OK(db_->SyncWAL());
|
|
|
|
VectorLogPtr wals;
|
|
Status s = dbfull()->GetSortedWalFiles(wals);
|
|
ASSERT_OK(s);
|
|
}
|
|
#endif // ROCKSDB_LITE
|
|
} // namespace ROCKSDB_NAMESPACE
|
|
|
|
int main(int argc, char** argv) {
|
|
ROCKSDB_NAMESPACE::port::InstallStackTraceHandler();
|
|
::testing::InitGoogleTest(&argc, argv);
|
|
return RUN_ALL_TESTS();
|
|
}
|