fork of https://github.com/oxigraph/rocksdb and https://github.com/facebook/rocksdb for nextgraph and oxigraph
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390 lines
13 KiB
390 lines
13 KiB
// Copyright (c) 2016-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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#ifndef ROCKSDB_LITE
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#include <algorithm>
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#include <string>
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#include <vector>
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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 "file/file_util.h"
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#include "rocksdb/comparator.h"
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#include "rocksdb/db.h"
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#include "rocksdb/transaction_log.h"
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#include "util/string_util.h"
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namespace ROCKSDB_NAMESPACE {
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#ifndef ROCKSDB_LITE
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class RepairTest : public DBTestBase {
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public:
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RepairTest() : DBTestBase("repair_test", /*env_do_fsync=*/true) {}
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Status GetFirstSstPath(std::string* first_sst_path) {
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assert(first_sst_path != nullptr);
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first_sst_path->clear();
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uint64_t manifest_size;
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std::vector<std::string> files;
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Status s = db_->GetLiveFiles(files, &manifest_size);
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if (s.ok()) {
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auto sst_iter =
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std::find_if(files.begin(), files.end(), [](const std::string& file) {
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uint64_t number;
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FileType type;
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bool ok = ParseFileName(file, &number, &type);
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return ok && type == kTableFile;
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});
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*first_sst_path = sst_iter == files.end() ? "" : dbname_ + *sst_iter;
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}
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return s;
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}
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};
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TEST_F(RepairTest, LostManifest) {
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// Add a couple SST files, delete the manifest, and verify RepairDB() saves
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// the day.
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ASSERT_OK(Put("key", "val"));
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ASSERT_OK(Flush());
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ASSERT_OK(Put("key2", "val2"));
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ASSERT_OK(Flush());
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// Need to get path before Close() deletes db_, but delete it after Close() to
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// ensure Close() didn't change the manifest.
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std::string manifest_path =
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DescriptorFileName(dbname_, dbfull()->TEST_Current_Manifest_FileNo());
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Close();
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ASSERT_OK(env_->FileExists(manifest_path));
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ASSERT_OK(env_->DeleteFile(manifest_path));
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ASSERT_OK(RepairDB(dbname_, CurrentOptions()));
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Reopen(CurrentOptions());
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ASSERT_EQ(Get("key"), "val");
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ASSERT_EQ(Get("key2"), "val2");
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}
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TEST_F(RepairTest, CorruptManifest) {
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// Manifest is in an invalid format. Expect a full recovery.
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ASSERT_OK(Put("key", "val"));
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ASSERT_OK(Flush());
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ASSERT_OK(Put("key2", "val2"));
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ASSERT_OK(Flush());
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// Need to get path before Close() deletes db_, but overwrite it after Close()
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// to ensure Close() didn't change the manifest.
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std::string manifest_path =
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DescriptorFileName(dbname_, dbfull()->TEST_Current_Manifest_FileNo());
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Close();
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ASSERT_OK(env_->FileExists(manifest_path));
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ASSERT_OK(CreateFile(env_->GetFileSystem(), manifest_path, "blah",
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false /* use_fsync */));
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ASSERT_OK(RepairDB(dbname_, CurrentOptions()));
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Reopen(CurrentOptions());
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ASSERT_EQ(Get("key"), "val");
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ASSERT_EQ(Get("key2"), "val2");
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}
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TEST_F(RepairTest, IncompleteManifest) {
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// In this case, the manifest is valid but does not reference all of the SST
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// files. Expect a full recovery.
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ASSERT_OK(Put("key", "val"));
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ASSERT_OK(Flush());
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std::string orig_manifest_path =
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DescriptorFileName(dbname_, dbfull()->TEST_Current_Manifest_FileNo());
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CopyFile(orig_manifest_path, orig_manifest_path + ".tmp");
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ASSERT_OK(Put("key2", "val2"));
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ASSERT_OK(Flush());
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// Need to get path before Close() deletes db_, but overwrite it after Close()
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// to ensure Close() didn't change the manifest.
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std::string new_manifest_path =
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DescriptorFileName(dbname_, dbfull()->TEST_Current_Manifest_FileNo());
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Close();
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ASSERT_OK(env_->FileExists(new_manifest_path));
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// Replace the manifest with one that is only aware of the first SST file.
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CopyFile(orig_manifest_path + ".tmp", new_manifest_path);
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ASSERT_OK(RepairDB(dbname_, CurrentOptions()));
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Reopen(CurrentOptions());
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ASSERT_EQ(Get("key"), "val");
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ASSERT_EQ(Get("key2"), "val2");
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}
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TEST_F(RepairTest, PostRepairSstFileNumbering) {
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// Verify after a DB is repaired, new files will be assigned higher numbers
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// than old files.
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ASSERT_OK(Put("key", "val"));
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ASSERT_OK(Flush());
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ASSERT_OK(Put("key2", "val2"));
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ASSERT_OK(Flush());
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uint64_t pre_repair_file_num = dbfull()->TEST_Current_Next_FileNo();
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Close();
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ASSERT_OK(RepairDB(dbname_, CurrentOptions()));
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Reopen(CurrentOptions());
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uint64_t post_repair_file_num = dbfull()->TEST_Current_Next_FileNo();
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ASSERT_GE(post_repair_file_num, pre_repair_file_num);
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}
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TEST_F(RepairTest, LostSst) {
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// Delete one of the SST files but preserve the manifest that refers to it,
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// then verify the DB is still usable for the intact SST.
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ASSERT_OK(Put("key", "val"));
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ASSERT_OK(Flush());
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ASSERT_OK(Put("key2", "val2"));
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ASSERT_OK(Flush());
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std::string sst_path;
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ASSERT_OK(GetFirstSstPath(&sst_path));
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ASSERT_FALSE(sst_path.empty());
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ASSERT_OK(env_->DeleteFile(sst_path));
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Close();
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ASSERT_OK(RepairDB(dbname_, CurrentOptions()));
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Reopen(CurrentOptions());
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// Exactly one of the key-value pairs should be in the DB now.
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ASSERT_TRUE((Get("key") == "val") != (Get("key2") == "val2"));
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}
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TEST_F(RepairTest, CorruptSst) {
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// Corrupt one of the SST files but preserve the manifest that refers to it,
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// then verify the DB is still usable for the intact SST.
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ASSERT_OK(Put("key", "val"));
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ASSERT_OK(Flush());
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ASSERT_OK(Put("key2", "val2"));
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ASSERT_OK(Flush());
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std::string sst_path;
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ASSERT_OK(GetFirstSstPath(&sst_path));
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ASSERT_FALSE(sst_path.empty());
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ASSERT_OK(CreateFile(env_->GetFileSystem(), sst_path, "blah",
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false /* use_fsync */));
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Close();
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ASSERT_OK(RepairDB(dbname_, CurrentOptions()));
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Reopen(CurrentOptions());
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// Exactly one of the key-value pairs should be in the DB now.
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ASSERT_TRUE((Get("key") == "val") != (Get("key2") == "val2"));
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}
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TEST_F(RepairTest, UnflushedSst) {
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// This test case invokes repair while some data is unflushed, then verifies
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// that data is in the db.
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ASSERT_OK(Put("key", "val"));
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VectorLogPtr wal_files;
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ASSERT_OK(dbfull()->GetSortedWalFiles(wal_files));
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ASSERT_EQ(wal_files.size(), 1);
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{
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uint64_t total_ssts_size;
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std::unordered_map<std::string, uint64_t> sst_files;
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ASSERT_OK(GetAllDataFiles(kTableFile, &sst_files, &total_ssts_size));
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ASSERT_EQ(total_ssts_size, 0);
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}
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// Need to get path before Close() deletes db_, but delete it after Close() to
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// ensure Close() didn't change the manifest.
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std::string manifest_path =
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DescriptorFileName(dbname_, dbfull()->TEST_Current_Manifest_FileNo());
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Close();
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ASSERT_OK(env_->FileExists(manifest_path));
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ASSERT_OK(env_->DeleteFile(manifest_path));
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ASSERT_OK(RepairDB(dbname_, CurrentOptions()));
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Reopen(CurrentOptions());
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ASSERT_OK(dbfull()->GetSortedWalFiles(wal_files));
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ASSERT_EQ(wal_files.size(), 0);
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{
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uint64_t total_ssts_size;
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std::unordered_map<std::string, uint64_t> sst_files;
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ASSERT_OK(GetAllDataFiles(kTableFile, &sst_files, &total_ssts_size));
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ASSERT_GT(total_ssts_size, 0);
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}
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ASSERT_EQ(Get("key"), "val");
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}
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TEST_F(RepairTest, SeparateWalDir) {
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do {
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Options options = CurrentOptions();
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DestroyAndReopen(options);
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ASSERT_OK(Put("key", "val"));
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ASSERT_OK(Put("foo", "bar"));
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VectorLogPtr wal_files;
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ASSERT_OK(dbfull()->GetSortedWalFiles(wal_files));
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ASSERT_EQ(wal_files.size(), 1);
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{
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uint64_t total_ssts_size;
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std::unordered_map<std::string, uint64_t> sst_files;
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ASSERT_OK(GetAllDataFiles(kTableFile, &sst_files, &total_ssts_size));
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ASSERT_EQ(total_ssts_size, 0);
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}
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std::string manifest_path =
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DescriptorFileName(dbname_, dbfull()->TEST_Current_Manifest_FileNo());
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Close();
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ASSERT_OK(env_->FileExists(manifest_path));
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ASSERT_OK(env_->DeleteFile(manifest_path));
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ASSERT_OK(RepairDB(dbname_, options));
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// make sure that all WALs are converted to SSTables.
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options.wal_dir = "";
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Reopen(options);
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ASSERT_OK(dbfull()->GetSortedWalFiles(wal_files));
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ASSERT_EQ(wal_files.size(), 0);
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{
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uint64_t total_ssts_size;
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std::unordered_map<std::string, uint64_t> sst_files;
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ASSERT_OK(GetAllDataFiles(kTableFile, &sst_files, &total_ssts_size));
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ASSERT_GT(total_ssts_size, 0);
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}
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ASSERT_EQ(Get("key"), "val");
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ASSERT_EQ(Get("foo"), "bar");
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} while(ChangeWalOptions());
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}
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TEST_F(RepairTest, RepairMultipleColumnFamilies) {
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// Verify repair logic associates SST files with their original column
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// families.
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const int kNumCfs = 3;
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const int kEntriesPerCf = 2;
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DestroyAndReopen(CurrentOptions());
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CreateAndReopenWithCF({"pikachu1", "pikachu2"}, CurrentOptions());
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for (int i = 0; i < kNumCfs; ++i) {
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for (int j = 0; j < kEntriesPerCf; ++j) {
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ASSERT_OK(Put(i, "key" + ToString(j), "val" + ToString(j)));
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if (j == kEntriesPerCf - 1 && i == kNumCfs - 1) {
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// Leave one unflushed so we can verify WAL entries are properly
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// associated with column families.
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continue;
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}
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ASSERT_OK(Flush(i));
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}
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}
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// Need to get path before Close() deletes db_, but delete it after Close() to
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// ensure Close() doesn't re-create the manifest.
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std::string manifest_path =
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DescriptorFileName(dbname_, dbfull()->TEST_Current_Manifest_FileNo());
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Close();
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ASSERT_OK(env_->FileExists(manifest_path));
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ASSERT_OK(env_->DeleteFile(manifest_path));
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ASSERT_OK(RepairDB(dbname_, CurrentOptions()));
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ReopenWithColumnFamilies({"default", "pikachu1", "pikachu2"},
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CurrentOptions());
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for (int i = 0; i < kNumCfs; ++i) {
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for (int j = 0; j < kEntriesPerCf; ++j) {
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ASSERT_EQ(Get(i, "key" + ToString(j)), "val" + ToString(j));
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}
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}
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}
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TEST_F(RepairTest, RepairColumnFamilyOptions) {
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// Verify repair logic uses correct ColumnFamilyOptions when repairing a
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// database with different options for column families.
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const int kNumCfs = 2;
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const int kEntriesPerCf = 2;
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Options opts(CurrentOptions()), rev_opts(CurrentOptions());
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opts.comparator = BytewiseComparator();
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rev_opts.comparator = ReverseBytewiseComparator();
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DestroyAndReopen(opts);
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CreateColumnFamilies({"reverse"}, rev_opts);
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ReopenWithColumnFamilies({"default", "reverse"},
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std::vector<Options>{opts, rev_opts});
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for (int i = 0; i < kNumCfs; ++i) {
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for (int j = 0; j < kEntriesPerCf; ++j) {
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ASSERT_OK(Put(i, "key" + ToString(j), "val" + ToString(j)));
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if (i == kNumCfs - 1 && j == kEntriesPerCf - 1) {
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// Leave one unflushed so we can verify RepairDB's flush logic
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continue;
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}
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ASSERT_OK(Flush(i));
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}
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}
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Close();
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// RepairDB() records the comparator in the manifest, and DB::Open would fail
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// if a different comparator were used.
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ASSERT_OK(RepairDB(dbname_, opts, {{"default", opts}, {"reverse", rev_opts}},
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opts /* unknown_cf_opts */));
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ASSERT_OK(TryReopenWithColumnFamilies({"default", "reverse"},
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std::vector<Options>{opts, rev_opts}));
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for (int i = 0; i < kNumCfs; ++i) {
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for (int j = 0; j < kEntriesPerCf; ++j) {
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ASSERT_EQ(Get(i, "key" + ToString(j)), "val" + ToString(j));
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}
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}
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// Examine table properties to verify RepairDB() used the right options when
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// converting WAL->SST
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TablePropertiesCollection fname_to_props;
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ASSERT_OK(db_->GetPropertiesOfAllTables(handles_[1], &fname_to_props));
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ASSERT_EQ(fname_to_props.size(), 2U);
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for (const auto& fname_and_props : fname_to_props) {
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std::string comparator_name (
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InternalKeyComparator(rev_opts.comparator).Name());
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comparator_name = comparator_name.substr(comparator_name.find(':') + 1);
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ASSERT_EQ(comparator_name,
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fname_and_props.second->comparator_name);
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}
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Close();
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// Also check comparator when it's provided via "unknown" CF options
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ASSERT_OK(RepairDB(dbname_, opts, {{"default", opts}},
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rev_opts /* unknown_cf_opts */));
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ASSERT_OK(TryReopenWithColumnFamilies({"default", "reverse"},
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std::vector<Options>{opts, rev_opts}));
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for (int i = 0; i < kNumCfs; ++i) {
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for (int j = 0; j < kEntriesPerCf; ++j) {
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ASSERT_EQ(Get(i, "key" + ToString(j)), "val" + ToString(j));
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}
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}
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}
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TEST_F(RepairTest, DbNameContainsTrailingSlash) {
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{
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bool tmp;
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if (env_->AreFilesSame("", "", &tmp).IsNotSupported()) {
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fprintf(stderr,
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"skipping RepairTest.DbNameContainsTrailingSlash due to "
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"unsupported Env::AreFilesSame\n");
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return;
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}
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}
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ASSERT_OK(Put("key", "val"));
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ASSERT_OK(Flush());
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Close();
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ASSERT_OK(RepairDB(dbname_ + "/", CurrentOptions()));
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Reopen(CurrentOptions());
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ASSERT_EQ(Get("key"), "val");
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}
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#endif // ROCKSDB_LITE
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} // namespace ROCKSDB_NAMESPACE
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int main(int argc, char** argv) {
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::testing::InitGoogleTest(&argc, argv);
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return RUN_ALL_TESTS();
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}
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#else
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#include <stdio.h>
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int main(int /*argc*/, char** /*argv*/) {
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fprintf(stderr, "SKIPPED as RepairDB is not supported in ROCKSDB_LITE\n");
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return 0;
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}
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#endif // ROCKSDB_LITE
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