Summary: Replace `reinterpret_cast` with `static_cast_with_check` for `DBImpl` and `ColumnFamilyHandleImpl`. Pull Request resolved: https://github.com/facebook/rocksdb/pull/7067 Reviewed By: siying Differential Revision: D22361587 Pulled By: jay-zhuang fbshipit-source-id: dfe9e8f3af39c3d27cc372c55ab9ad905eb0a5a1
577 lines
18 KiB
C++
577 lines
18 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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#ifndef ROCKSDB_LITE
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#include "rocksdb/db.h"
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#include <errno.h>
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#include <fcntl.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <cinttypes>
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#include "db/db_impl/db_impl.h"
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#include "db/db_test_util.h"
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#include "db/log_format.h"
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#include "db/version_set.h"
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#include "env/composite_env_wrapper.h"
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#include "file/filename.h"
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#include "rocksdb/cache.h"
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#include "rocksdb/convenience.h"
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#include "rocksdb/env.h"
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#include "rocksdb/table.h"
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#include "rocksdb/write_batch.h"
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#include "table/block_based/block_based_table_builder.h"
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#include "table/meta_blocks.h"
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#include "test_util/testharness.h"
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#include "test_util/testutil.h"
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#include "util/string_util.h"
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namespace ROCKSDB_NAMESPACE {
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static const int kValueSize = 1000;
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class CorruptionTest : public testing::Test {
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public:
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test::ErrorEnv env_;
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std::string dbname_;
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std::shared_ptr<Cache> tiny_cache_;
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Options options_;
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DB* db_;
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CorruptionTest() {
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// If LRU cache shard bit is smaller than 2 (or -1 which will automatically
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// set it to 0), test SequenceNumberRecovery will fail, likely because of a
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// bug in recovery code. Keep it 4 for now to make the test passes.
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tiny_cache_ = NewLRUCache(100, 4);
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options_.wal_recovery_mode = WALRecoveryMode::kTolerateCorruptedTailRecords;
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options_.env = &env_;
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dbname_ = test::PerThreadDBPath("corruption_test");
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DestroyDB(dbname_, options_);
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db_ = nullptr;
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options_.create_if_missing = true;
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BlockBasedTableOptions table_options;
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table_options.block_size_deviation = 0; // make unit test pass for now
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options_.table_factory.reset(NewBlockBasedTableFactory(table_options));
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Reopen();
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options_.create_if_missing = false;
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}
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~CorruptionTest() override {
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delete db_;
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DestroyDB(dbname_, Options());
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}
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void CloseDb() {
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delete db_;
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db_ = nullptr;
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}
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Status TryReopen(Options* options = nullptr) {
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delete db_;
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db_ = nullptr;
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Options opt = (options ? *options : options_);
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if (opt.env == Options().env) {
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// If env is not overridden, replace it with ErrorEnv.
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// Otherwise, the test already uses a non-default Env.
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opt.env = &env_;
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}
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opt.arena_block_size = 4096;
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BlockBasedTableOptions table_options;
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table_options.block_cache = tiny_cache_;
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table_options.block_size_deviation = 0;
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opt.table_factory.reset(NewBlockBasedTableFactory(table_options));
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return DB::Open(opt, dbname_, &db_);
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}
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void Reopen(Options* options = nullptr) {
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ASSERT_OK(TryReopen(options));
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}
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void RepairDB() {
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delete db_;
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db_ = nullptr;
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ASSERT_OK(::ROCKSDB_NAMESPACE::RepairDB(dbname_, options_));
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}
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void Build(int n, int flush_every = 0) {
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std::string key_space, value_space;
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WriteBatch batch;
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for (int i = 0; i < n; i++) {
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if (flush_every != 0 && i != 0 && i % flush_every == 0) {
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DBImpl* dbi = static_cast_with_check<DBImpl>(db_);
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dbi->TEST_FlushMemTable();
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}
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//if ((i % 100) == 0) fprintf(stderr, "@ %d of %d\n", i, n);
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Slice key = Key(i, &key_space);
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batch.Clear();
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batch.Put(key, Value(i, &value_space));
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ASSERT_OK(db_->Write(WriteOptions(), &batch));
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}
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}
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void Check(int min_expected, int max_expected) {
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uint64_t next_expected = 0;
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uint64_t missed = 0;
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int bad_keys = 0;
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int bad_values = 0;
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int correct = 0;
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std::string value_space;
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// Do not verify checksums. If we verify checksums then the
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// db itself will raise errors because data is corrupted.
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// Instead, we want the reads to be successful and this test
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// will detect whether the appropriate corruptions have
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// occurred.
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Iterator* iter = db_->NewIterator(ReadOptions(false, true));
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for (iter->SeekToFirst(); iter->Valid(); iter->Next()) {
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uint64_t key;
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Slice in(iter->key());
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if (!ConsumeDecimalNumber(&in, &key) ||
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!in.empty() ||
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key < next_expected) {
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bad_keys++;
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continue;
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}
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missed += (key - next_expected);
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next_expected = key + 1;
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if (iter->value() != Value(static_cast<int>(key), &value_space)) {
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bad_values++;
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} else {
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correct++;
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}
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}
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delete iter;
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fprintf(stderr,
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"expected=%d..%d; got=%d; bad_keys=%d; bad_values=%d; missed=%llu\n",
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min_expected, max_expected, correct, bad_keys, bad_values,
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static_cast<unsigned long long>(missed));
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ASSERT_LE(min_expected, correct);
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ASSERT_GE(max_expected, correct);
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}
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void Corrupt(FileType filetype, int offset, int bytes_to_corrupt) {
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// Pick file to corrupt
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std::vector<std::string> filenames;
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ASSERT_OK(env_.GetChildren(dbname_, &filenames));
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uint64_t number;
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FileType type;
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std::string fname;
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int picked_number = -1;
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for (size_t i = 0; i < filenames.size(); i++) {
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if (ParseFileName(filenames[i], &number, &type) &&
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type == filetype &&
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static_cast<int>(number) > picked_number) { // Pick latest file
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fname = dbname_ + "/" + filenames[i];
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picked_number = static_cast<int>(number);
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}
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}
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ASSERT_TRUE(!fname.empty()) << filetype;
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test::CorruptFile(fname, offset, bytes_to_corrupt);
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}
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// corrupts exactly one file at level `level`. if no file found at level,
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// asserts
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void CorruptTableFileAtLevel(int level, int offset, int bytes_to_corrupt) {
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std::vector<LiveFileMetaData> metadata;
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db_->GetLiveFilesMetaData(&metadata);
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for (const auto& m : metadata) {
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if (m.level == level) {
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test::CorruptFile(dbname_ + "/" + m.name, offset, bytes_to_corrupt);
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return;
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}
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}
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FAIL() << "no file found at level";
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}
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int Property(const std::string& name) {
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std::string property;
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int result;
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if (db_->GetProperty(name, &property) &&
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sscanf(property.c_str(), "%d", &result) == 1) {
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return result;
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} else {
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return -1;
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}
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}
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// Return the ith key
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Slice Key(int i, std::string* storage) {
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char buf[100];
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snprintf(buf, sizeof(buf), "%016d", i);
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storage->assign(buf, strlen(buf));
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return Slice(*storage);
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}
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// Return the value to associate with the specified key
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Slice Value(int k, std::string* storage) {
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if (k == 0) {
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// Ugh. Random seed of 0 used to produce no entropy. This code
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// preserves the implementation that was in place when all of the
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// magic values in this file were picked.
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*storage = std::string(kValueSize, ' ');
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return Slice(*storage);
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} else {
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Random r(k);
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return test::RandomString(&r, kValueSize, storage);
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}
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}
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};
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TEST_F(CorruptionTest, Recovery) {
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Build(100);
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Check(100, 100);
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#ifdef OS_WIN
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// On Wndows OS Disk cache does not behave properly
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// We do not call FlushBuffers on every Flush. If we do not close
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// the log file prior to the corruption we end up with the first
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// block not corrupted but only the second. However, under the debugger
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// things work just fine but never pass when running normally
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// For that reason people may want to run with unbuffered I/O. That option
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// is not available for WAL though.
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CloseDb();
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#endif
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Corrupt(kLogFile, 19, 1); // WriteBatch tag for first record
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Corrupt(kLogFile, log::kBlockSize + 1000, 1); // Somewhere in second block
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ASSERT_TRUE(!TryReopen().ok());
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options_.paranoid_checks = false;
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Reopen(&options_);
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// The 64 records in the first two log blocks are completely lost.
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Check(36, 36);
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}
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TEST_F(CorruptionTest, RecoverWriteError) {
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env_.writable_file_error_ = true;
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Status s = TryReopen();
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ASSERT_TRUE(!s.ok());
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}
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TEST_F(CorruptionTest, NewFileErrorDuringWrite) {
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// Do enough writing to force minor compaction
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env_.writable_file_error_ = true;
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const int num =
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static_cast<int>(3 + (Options().write_buffer_size / kValueSize));
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std::string value_storage;
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Status s;
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bool failed = false;
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for (int i = 0; i < num; i++) {
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WriteBatch batch;
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batch.Put("a", Value(100, &value_storage));
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s = db_->Write(WriteOptions(), &batch);
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if (!s.ok()) {
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failed = true;
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}
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ASSERT_TRUE(!failed || !s.ok());
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}
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ASSERT_TRUE(!s.ok());
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ASSERT_GE(env_.num_writable_file_errors_, 1);
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env_.writable_file_error_ = false;
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Reopen();
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}
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TEST_F(CorruptionTest, TableFile) {
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Build(100);
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DBImpl* dbi = static_cast_with_check<DBImpl>(db_);
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dbi->TEST_FlushMemTable();
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dbi->TEST_CompactRange(0, nullptr, nullptr);
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dbi->TEST_CompactRange(1, nullptr, nullptr);
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Corrupt(kTableFile, 100, 1);
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Check(99, 99);
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ASSERT_NOK(dbi->VerifyChecksum());
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}
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TEST_F(CorruptionTest, VerifyChecksumReadahead) {
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Options options;
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SpecialEnv senv(Env::Default());
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options.env = &senv;
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// Disable block cache as we are going to check checksum for
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// the same file twice and measure number of reads.
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BlockBasedTableOptions table_options_no_bc;
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table_options_no_bc.no_block_cache = true;
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options.table_factory.reset(NewBlockBasedTableFactory(table_options_no_bc));
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Reopen(&options);
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Build(10000);
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DBImpl* dbi = static_cast_with_check<DBImpl>(db_);
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dbi->TEST_FlushMemTable();
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dbi->TEST_CompactRange(0, nullptr, nullptr);
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dbi->TEST_CompactRange(1, nullptr, nullptr);
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senv.count_random_reads_ = true;
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senv.random_read_counter_.Reset();
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ASSERT_OK(dbi->VerifyChecksum());
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// Make sure the counter is enabled.
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ASSERT_GT(senv.random_read_counter_.Read(), 0);
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// The SST file is about 10MB. Default readahead size is 256KB.
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// Give a conservative 20 reads for metadata blocks, The number
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// of random reads should be within 10 MB / 256KB + 20 = 60.
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ASSERT_LT(senv.random_read_counter_.Read(), 60);
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senv.random_read_bytes_counter_ = 0;
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ReadOptions ro;
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ro.readahead_size = size_t{32 * 1024};
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ASSERT_OK(dbi->VerifyChecksum(ro));
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// The SST file is about 10MB. We set readahead size to 32KB.
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// Give 0 to 20 reads for metadata blocks, and allow real read
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// to range from 24KB to 48KB. The lower bound would be:
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// 10MB / 48KB + 0 = 213
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// The higher bound is
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// 10MB / 24KB + 20 = 447.
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ASSERT_GE(senv.random_read_counter_.Read(), 213);
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ASSERT_LE(senv.random_read_counter_.Read(), 447);
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// Test readahead shouldn't break mmap mode (where it should be
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// disabled).
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options.allow_mmap_reads = true;
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Reopen(&options);
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dbi = static_cast<DBImpl*>(db_);
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ASSERT_OK(dbi->VerifyChecksum(ro));
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CloseDb();
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}
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TEST_F(CorruptionTest, TableFileIndexData) {
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Options options;
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// very big, we'll trigger flushes manually
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options.write_buffer_size = 100 * 1024 * 1024;
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Reopen(&options);
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// build 2 tables, flush at 5000
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Build(10000, 5000);
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DBImpl* dbi = static_cast_with_check<DBImpl>(db_);
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dbi->TEST_FlushMemTable();
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// corrupt an index block of an entire file
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Corrupt(kTableFile, -2000, 500);
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options.paranoid_checks = false;
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Reopen(&options);
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dbi = static_cast_with_check<DBImpl>(db_);
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// one full file may be readable, since only one was corrupted
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// the other file should be fully non-readable, since index was corrupted
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Check(0, 5000);
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ASSERT_NOK(dbi->VerifyChecksum());
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// In paranoid mode, the db cannot be opened due to the corrupted file.
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ASSERT_TRUE(TryReopen().IsCorruption());
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}
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TEST_F(CorruptionTest, MissingDescriptor) {
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Build(1000);
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RepairDB();
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Reopen();
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Check(1000, 1000);
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}
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TEST_F(CorruptionTest, SequenceNumberRecovery) {
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ASSERT_OK(db_->Put(WriteOptions(), "foo", "v1"));
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ASSERT_OK(db_->Put(WriteOptions(), "foo", "v2"));
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ASSERT_OK(db_->Put(WriteOptions(), "foo", "v3"));
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ASSERT_OK(db_->Put(WriteOptions(), "foo", "v4"));
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ASSERT_OK(db_->Put(WriteOptions(), "foo", "v5"));
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RepairDB();
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Reopen();
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std::string v;
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ASSERT_OK(db_->Get(ReadOptions(), "foo", &v));
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ASSERT_EQ("v5", v);
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// Write something. If sequence number was not recovered properly,
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// it will be hidden by an earlier write.
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ASSERT_OK(db_->Put(WriteOptions(), "foo", "v6"));
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ASSERT_OK(db_->Get(ReadOptions(), "foo", &v));
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ASSERT_EQ("v6", v);
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Reopen();
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ASSERT_OK(db_->Get(ReadOptions(), "foo", &v));
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ASSERT_EQ("v6", v);
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}
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TEST_F(CorruptionTest, CorruptedDescriptor) {
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ASSERT_OK(db_->Put(WriteOptions(), "foo", "hello"));
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DBImpl* dbi = static_cast_with_check<DBImpl>(db_);
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dbi->TEST_FlushMemTable();
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dbi->TEST_CompactRange(0, nullptr, nullptr);
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Corrupt(kDescriptorFile, 0, 1000);
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Status s = TryReopen();
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ASSERT_TRUE(!s.ok());
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RepairDB();
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Reopen();
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std::string v;
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ASSERT_OK(db_->Get(ReadOptions(), "foo", &v));
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ASSERT_EQ("hello", v);
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}
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TEST_F(CorruptionTest, CompactionInputError) {
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Options options;
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Reopen(&options);
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Build(10);
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DBImpl* dbi = static_cast_with_check<DBImpl>(db_);
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dbi->TEST_FlushMemTable();
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dbi->TEST_CompactRange(0, nullptr, nullptr);
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dbi->TEST_CompactRange(1, nullptr, nullptr);
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ASSERT_EQ(1, Property("rocksdb.num-files-at-level2"));
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Corrupt(kTableFile, 100, 1);
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Check(9, 9);
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ASSERT_NOK(dbi->VerifyChecksum());
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// Force compactions by writing lots of values
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Build(10000);
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Check(10000, 10000);
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ASSERT_NOK(dbi->VerifyChecksum());
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}
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TEST_F(CorruptionTest, CompactionInputErrorParanoid) {
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Options options;
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options.paranoid_checks = true;
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options.write_buffer_size = 131072;
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options.max_write_buffer_number = 2;
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Reopen(&options);
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DBImpl* dbi = static_cast_with_check<DBImpl>(db_);
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// Fill levels >= 1
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for (int level = 1; level < dbi->NumberLevels(); level++) {
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dbi->Put(WriteOptions(), "", "begin");
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dbi->Put(WriteOptions(), "~", "end");
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dbi->TEST_FlushMemTable();
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for (int comp_level = 0; comp_level < dbi->NumberLevels() - level;
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++comp_level) {
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dbi->TEST_CompactRange(comp_level, nullptr, nullptr);
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}
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}
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Reopen(&options);
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dbi = static_cast_with_check<DBImpl>(db_);
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Build(10);
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dbi->TEST_FlushMemTable();
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dbi->TEST_WaitForCompact();
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ASSERT_EQ(1, Property("rocksdb.num-files-at-level0"));
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CorruptTableFileAtLevel(0, 100, 1);
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Check(9, 9);
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ASSERT_NOK(dbi->VerifyChecksum());
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// Write must eventually fail because of corrupted table
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Status s;
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std::string tmp1, tmp2;
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bool failed = false;
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for (int i = 0; i < 10000; i++) {
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s = db_->Put(WriteOptions(), Key(i, &tmp1), Value(i, &tmp2));
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if (!s.ok()) {
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failed = true;
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}
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// if one write failed, every subsequent write must fail, too
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ASSERT_TRUE(!failed || !s.ok()) << "write did not fail in a corrupted db";
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}
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ASSERT_TRUE(!s.ok()) << "write did not fail in corrupted paranoid db";
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}
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TEST_F(CorruptionTest, UnrelatedKeys) {
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Build(10);
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DBImpl* dbi = static_cast_with_check<DBImpl>(db_);
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dbi->TEST_FlushMemTable();
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Corrupt(kTableFile, 100, 1);
|
|
ASSERT_NOK(dbi->VerifyChecksum());
|
|
|
|
std::string tmp1, tmp2;
|
|
ASSERT_OK(db_->Put(WriteOptions(), Key(1000, &tmp1), Value(1000, &tmp2)));
|
|
std::string v;
|
|
ASSERT_OK(db_->Get(ReadOptions(), Key(1000, &tmp1), &v));
|
|
ASSERT_EQ(Value(1000, &tmp2).ToString(), v);
|
|
dbi->TEST_FlushMemTable();
|
|
ASSERT_OK(db_->Get(ReadOptions(), Key(1000, &tmp1), &v));
|
|
ASSERT_EQ(Value(1000, &tmp2).ToString(), v);
|
|
}
|
|
|
|
TEST_F(CorruptionTest, RangeDeletionCorrupted) {
|
|
ASSERT_OK(
|
|
db_->DeleteRange(WriteOptions(), db_->DefaultColumnFamily(), "a", "b"));
|
|
ASSERT_OK(db_->Flush(FlushOptions()));
|
|
std::vector<LiveFileMetaData> metadata;
|
|
db_->GetLiveFilesMetaData(&metadata);
|
|
ASSERT_EQ(static_cast<size_t>(1), metadata.size());
|
|
std::string filename = dbname_ + metadata[0].name;
|
|
|
|
std::unique_ptr<RandomAccessFile> file;
|
|
ASSERT_OK(options_.env->NewRandomAccessFile(filename, &file, EnvOptions()));
|
|
std::unique_ptr<RandomAccessFileReader> file_reader(
|
|
new RandomAccessFileReader(NewLegacyRandomAccessFileWrapper(file),
|
|
filename));
|
|
|
|
uint64_t file_size;
|
|
ASSERT_OK(options_.env->GetFileSize(filename, &file_size));
|
|
|
|
BlockHandle range_del_handle;
|
|
ASSERT_OK(FindMetaBlock(
|
|
file_reader.get(), file_size, kBlockBasedTableMagicNumber,
|
|
ImmutableCFOptions(options_), kRangeDelBlock, &range_del_handle));
|
|
|
|
ASSERT_OK(TryReopen());
|
|
test::CorruptFile(filename, static_cast<int>(range_del_handle.offset()), 1);
|
|
ASSERT_TRUE(TryReopen().IsCorruption());
|
|
}
|
|
|
|
TEST_F(CorruptionTest, FileSystemStateCorrupted) {
|
|
for (int iter = 0; iter < 2; ++iter) {
|
|
Options options;
|
|
options.paranoid_checks = true;
|
|
options.create_if_missing = true;
|
|
Reopen(&options);
|
|
Build(10);
|
|
ASSERT_OK(db_->Flush(FlushOptions()));
|
|
DBImpl* dbi = static_cast_with_check<DBImpl>(db_);
|
|
std::vector<LiveFileMetaData> metadata;
|
|
dbi->GetLiveFilesMetaData(&metadata);
|
|
ASSERT_GT(metadata.size(), size_t(0));
|
|
std::string filename = dbname_ + metadata[0].name;
|
|
|
|
delete db_;
|
|
db_ = nullptr;
|
|
|
|
if (iter == 0) { // corrupt file size
|
|
std::unique_ptr<WritableFile> file;
|
|
env_.NewWritableFile(filename, &file, EnvOptions());
|
|
file->Append(Slice("corrupted sst"));
|
|
file.reset();
|
|
Status x = TryReopen(&options);
|
|
ASSERT_TRUE(x.IsCorruption());
|
|
} else { // delete the file
|
|
env_.DeleteFile(filename);
|
|
Status x = TryReopen(&options);
|
|
ASSERT_TRUE(x.IsPathNotFound());
|
|
}
|
|
|
|
DestroyDB(dbname_, options_);
|
|
}
|
|
}
|
|
|
|
} // namespace ROCKSDB_NAMESPACE
|
|
|
|
int main(int argc, char** argv) {
|
|
::testing::InitGoogleTest(&argc, argv);
|
|
return RUN_ALL_TESTS();
|
|
}
|
|
|
|
#else
|
|
#include <stdio.h>
|
|
|
|
int main(int /*argc*/, char** /*argv*/) {
|
|
fprintf(stderr, "SKIPPED as RepairDB() is not supported in ROCKSDB_LITE\n");
|
|
return 0;
|
|
}
|
|
|
|
#endif // !ROCKSDB_LITE
|