Revision fdf403f5918a2b4355cf75ebe5e21d0fc22db880 authored by Andrew Kryczka on 19 February 2023, 21:44:55 UTC, committed by Andrew Kryczka on 19 February 2023, 21:44:55 UTC
1 parent 4b87e21
db_stress_test_base.cc
// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
// This source code is licensed under both the GPLv2 (found in the
// COPYING file in the root directory) and Apache 2.0 License
// (found in the LICENSE.Apache file in the root directory).
//
// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file. See the AUTHORS file for names of contributors.
//
#include <ios>
#include <thread>
#include "util/compression.h"
#ifdef GFLAGS
#include "db_stress_tool/db_stress_common.h"
#include "db_stress_tool/db_stress_compaction_filter.h"
#include "db_stress_tool/db_stress_driver.h"
#include "db_stress_tool/db_stress_table_properties_collector.h"
#include "rocksdb/convenience.h"
#include "rocksdb/filter_policy.h"
#include "rocksdb/secondary_cache.h"
#include "rocksdb/sst_file_manager.h"
#include "rocksdb/types.h"
#include "rocksdb/utilities/object_registry.h"
#include "rocksdb/utilities/write_batch_with_index.h"
#include "test_util/testutil.h"
#include "util/cast_util.h"
#include "utilities/backup/backup_engine_impl.h"
#include "utilities/fault_injection_fs.h"
#include "utilities/fault_injection_secondary_cache.h"
namespace ROCKSDB_NAMESPACE {
namespace {
std::shared_ptr<const FilterPolicy> CreateFilterPolicy() {
if (FLAGS_bloom_bits < 0) {
return BlockBasedTableOptions().filter_policy;
}
const FilterPolicy* new_policy;
if (FLAGS_ribbon_starting_level >= 999) {
// Use Bloom API
new_policy = NewBloomFilterPolicy(FLAGS_bloom_bits, false);
} else {
new_policy = NewRibbonFilterPolicy(
FLAGS_bloom_bits, /* bloom_before_level */ FLAGS_ribbon_starting_level);
}
return std::shared_ptr<const FilterPolicy>(new_policy);
}
} // namespace
StressTest::StressTest()
: cache_(NewCache(FLAGS_cache_size, FLAGS_cache_numshardbits)),
filter_policy_(CreateFilterPolicy()),
db_(nullptr),
txn_db_(nullptr),
db_aptr_(nullptr),
clock_(db_stress_env->GetSystemClock().get()),
new_column_family_name_(1),
num_times_reopened_(0),
db_preload_finished_(false),
cmp_db_(nullptr),
is_db_stopped_(false) {
if (FLAGS_destroy_db_initially) {
std::vector<std::string> files;
db_stress_env->GetChildren(FLAGS_db, &files);
for (unsigned int i = 0; i < files.size(); i++) {
if (Slice(files[i]).starts_with("heap-")) {
db_stress_env->DeleteFile(FLAGS_db + "/" + files[i]);
}
}
Options options;
options.env = db_stress_env;
// Remove files without preserving manfiest files
const Status s = !FLAGS_use_blob_db
? DestroyDB(FLAGS_db, options)
: blob_db::DestroyBlobDB(FLAGS_db, options,
blob_db::BlobDBOptions());
if (!s.ok()) {
fprintf(stderr, "Cannot destroy original db: %s\n", s.ToString().c_str());
exit(1);
}
}
}
StressTest::~StressTest() {
for (auto cf : column_families_) {
delete cf;
}
column_families_.clear();
delete db_;
for (auto* cf : cmp_cfhs_) {
delete cf;
}
cmp_cfhs_.clear();
delete cmp_db_;
}
std::shared_ptr<Cache> StressTest::NewCache(size_t capacity,
int32_t num_shard_bits) {
ConfigOptions config_options;
if (capacity <= 0) {
return nullptr;
}
if (FLAGS_cache_type == "clock_cache") {
fprintf(stderr, "Old clock cache implementation has been removed.\n");
exit(1);
} else if (FLAGS_cache_type == "hyper_clock_cache") {
return HyperClockCacheOptions(static_cast<size_t>(capacity),
FLAGS_block_size /*estimated_entry_charge*/,
num_shard_bits)
.MakeSharedCache();
} else if (FLAGS_cache_type == "lru_cache") {
LRUCacheOptions opts;
opts.capacity = capacity;
opts.num_shard_bits = num_shard_bits;
std::shared_ptr<SecondaryCache> secondary_cache;
if (!FLAGS_secondary_cache_uri.empty()) {
Status s = SecondaryCache::CreateFromString(
config_options, FLAGS_secondary_cache_uri, &secondary_cache);
if (secondary_cache == nullptr) {
fprintf(stderr,
"No secondary cache registered matching string: %s status=%s\n",
FLAGS_secondary_cache_uri.c_str(), s.ToString().c_str());
exit(1);
}
if (FLAGS_secondary_cache_fault_one_in > 0) {
secondary_cache = std::make_shared<FaultInjectionSecondaryCache>(
secondary_cache, static_cast<uint32_t>(FLAGS_seed),
FLAGS_secondary_cache_fault_one_in);
}
opts.secondary_cache = secondary_cache;
}
return NewLRUCache(opts);
} else {
fprintf(stderr, "Cache type not supported.");
exit(1);
}
}
std::vector<std::string> StressTest::GetBlobCompressionTags() {
std::vector<std::string> compression_tags{"kNoCompression"};
if (Snappy_Supported()) {
compression_tags.emplace_back("kSnappyCompression");
}
if (LZ4_Supported()) {
compression_tags.emplace_back("kLZ4Compression");
}
if (ZSTD_Supported()) {
compression_tags.emplace_back("kZSTD");
}
return compression_tags;
}
bool StressTest::BuildOptionsTable() {
if (FLAGS_set_options_one_in <= 0) {
return true;
}
std::unordered_map<std::string, std::vector<std::string>> options_tbl = {
{"write_buffer_size",
{std::to_string(options_.write_buffer_size),
std::to_string(options_.write_buffer_size * 2),
std::to_string(options_.write_buffer_size * 4)}},
{"max_write_buffer_number",
{std::to_string(options_.max_write_buffer_number),
std::to_string(options_.max_write_buffer_number * 2),
std::to_string(options_.max_write_buffer_number * 4)}},
{"arena_block_size",
{
std::to_string(options_.arena_block_size),
std::to_string(options_.write_buffer_size / 4),
std::to_string(options_.write_buffer_size / 8),
}},
{"memtable_huge_page_size", {"0", std::to_string(2 * 1024 * 1024)}},
{"max_successive_merges", {"0", "2", "4"}},
{"inplace_update_num_locks", {"100", "200", "300"}},
// TODO: re-enable once internal task T124324915 is fixed.
// {"experimental_mempurge_threshold", {"0.0", "1.0"}},
// TODO(ljin): enable test for this option
// {"disable_auto_compactions", {"100", "200", "300"}},
{"level0_file_num_compaction_trigger",
{
std::to_string(options_.level0_file_num_compaction_trigger),
std::to_string(options_.level0_file_num_compaction_trigger + 2),
std::to_string(options_.level0_file_num_compaction_trigger + 4),
}},
{"level0_slowdown_writes_trigger",
{
std::to_string(options_.level0_slowdown_writes_trigger),
std::to_string(options_.level0_slowdown_writes_trigger + 2),
std::to_string(options_.level0_slowdown_writes_trigger + 4),
}},
{"level0_stop_writes_trigger",
{
std::to_string(options_.level0_stop_writes_trigger),
std::to_string(options_.level0_stop_writes_trigger + 2),
std::to_string(options_.level0_stop_writes_trigger + 4),
}},
{"max_compaction_bytes",
{
std::to_string(options_.target_file_size_base * 5),
std::to_string(options_.target_file_size_base * 15),
std::to_string(options_.target_file_size_base * 100),
}},
{"target_file_size_base",
{
std::to_string(options_.target_file_size_base),
std::to_string(options_.target_file_size_base * 2),
std::to_string(options_.target_file_size_base * 4),
}},
{"target_file_size_multiplier",
{
std::to_string(options_.target_file_size_multiplier),
"1",
"2",
}},
{"max_bytes_for_level_base",
{
std::to_string(options_.max_bytes_for_level_base / 2),
std::to_string(options_.max_bytes_for_level_base),
std::to_string(options_.max_bytes_for_level_base * 2),
}},
{"max_bytes_for_level_multiplier",
{
std::to_string(options_.max_bytes_for_level_multiplier),
"1",
"2",
}},
{"max_sequential_skip_in_iterations", {"4", "8", "12"}},
};
if (FLAGS_allow_setting_blob_options_dynamically) {
options_tbl.emplace("enable_blob_files",
std::vector<std::string>{"false", "true"});
options_tbl.emplace("min_blob_size",
std::vector<std::string>{"0", "8", "16"});
options_tbl.emplace("blob_file_size",
std::vector<std::string>{"1M", "16M", "256M", "1G"});
options_tbl.emplace("blob_compression_type", GetBlobCompressionTags());
options_tbl.emplace("enable_blob_garbage_collection",
std::vector<std::string>{"false", "true"});
options_tbl.emplace(
"blob_garbage_collection_age_cutoff",
std::vector<std::string>{"0.0", "0.25", "0.5", "0.75", "1.0"});
options_tbl.emplace("blob_garbage_collection_force_threshold",
std::vector<std::string>{"0.5", "0.75", "1.0"});
options_tbl.emplace("blob_compaction_readahead_size",
std::vector<std::string>{"0", "1M", "4M"});
options_tbl.emplace("blob_file_starting_level",
std::vector<std::string>{"0", "1", "2"});
options_tbl.emplace("prepopulate_blob_cache",
std::vector<std::string>{"kDisable", "kFlushOnly"});
}
options_table_ = std::move(options_tbl);
for (const auto& iter : options_table_) {
options_index_.push_back(iter.first);
}
return true;
}
void StressTest::InitDb(SharedState* shared) {
uint64_t now = clock_->NowMicros();
fprintf(stdout, "%s Initializing db_stress\n",
clock_->TimeToString(now / 1000000).c_str());
PrintEnv();
Open(shared);
BuildOptionsTable();
}
void StressTest::FinishInitDb(SharedState* shared) {
if (FLAGS_read_only) {
uint64_t now = clock_->NowMicros();
fprintf(stdout, "%s Preloading db with %" PRIu64 " KVs\n",
clock_->TimeToString(now / 1000000).c_str(), FLAGS_max_key);
PreloadDbAndReopenAsReadOnly(FLAGS_max_key, shared);
}
if (shared->HasHistory()) {
// The way it works right now is, if there's any history, that means the
// previous run mutating the DB had all its operations traced, in which case
// we should always be able to `Restore()` the expected values to match the
// `db_`'s current seqno.
Status s = shared->Restore(db_);
if (!s.ok()) {
fprintf(stderr, "Error restoring historical expected values: %s\n",
s.ToString().c_str());
exit(1);
}
}
if (FLAGS_use_txn) {
// It's OK here without sync because unsynced data cannot be lost at this
// point
// - even with sync_fault_injection=1 as the
// file is still directly writable until after FinishInitDb()
ProcessRecoveredPreparedTxns(shared);
}
if (FLAGS_enable_compaction_filter) {
auto* compaction_filter_factory =
reinterpret_cast<DbStressCompactionFilterFactory*>(
options_.compaction_filter_factory.get());
assert(compaction_filter_factory);
// This must be called only after any potential `SharedState::Restore()` has
// completed in order for the `compaction_filter_factory` to operate on the
// correct latest values file.
compaction_filter_factory->SetSharedState(shared);
fprintf(stdout, "Compaction filter factory: %s\n",
compaction_filter_factory->Name());
}
}
void StressTest::TrackExpectedState(SharedState* shared) {
// For `FLAGS_manual_wal_flush_one_inWAL`
// data can be lost when `manual_wal_flush_one_in > 0` and `FlushWAL()` is not
// explictly called by users of RocksDB (in our case, db stress).
// Therefore recovery from such potential WAL data loss is a prefix recovery
// that requires tracing
if ((FLAGS_sync_fault_injection || FLAGS_disable_wal ||
FLAGS_manual_wal_flush_one_in > 0) &&
IsStateTracked()) {
Status s = shared->SaveAtAndAfter(db_);
if (!s.ok()) {
fprintf(stderr, "Error enabling history tracing: %s\n",
s.ToString().c_str());
exit(1);
}
}
}
Status StressTest::AssertSame(DB* db, ColumnFamilyHandle* cf,
ThreadState::SnapshotState& snap_state) {
Status s;
if (cf->GetName() != snap_state.cf_at_name) {
return s;
}
// This `ReadOptions` is for validation purposes. Ignore
// `FLAGS_rate_limit_user_ops` to avoid slowing any validation.
ReadOptions ropt;
ropt.snapshot = snap_state.snapshot;
Slice ts;
if (!snap_state.timestamp.empty()) {
ts = snap_state.timestamp;
ropt.timestamp = &ts;
}
PinnableSlice exp_v(&snap_state.value);
exp_v.PinSelf();
PinnableSlice v;
s = db->Get(ropt, cf, snap_state.key, &v);
if (!s.ok() && !s.IsNotFound()) {
return s;
}
if (snap_state.status != s) {
return Status::Corruption(
"The snapshot gave inconsistent results for key " +
std::to_string(Hash(snap_state.key.c_str(), snap_state.key.size(), 0)) +
" in cf " + cf->GetName() + ": (" + snap_state.status.ToString() +
") vs. (" + s.ToString() + ")");
}
if (s.ok()) {
if (exp_v != v) {
return Status::Corruption("The snapshot gave inconsistent values: (" +
exp_v.ToString() + ") vs. (" + v.ToString() +
")");
}
}
if (snap_state.key_vec != nullptr) {
// When `prefix_extractor` is set, seeking to beginning and scanning
// across prefixes are only supported with `total_order_seek` set.
ropt.total_order_seek = true;
std::unique_ptr<Iterator> iterator(db->NewIterator(ropt));
std::unique_ptr<std::vector<bool>> tmp_bitvec(
new std::vector<bool>(FLAGS_max_key));
for (iterator->SeekToFirst(); iterator->Valid(); iterator->Next()) {
uint64_t key_val;
if (GetIntVal(iterator->key().ToString(), &key_val)) {
(*tmp_bitvec.get())[key_val] = true;
}
}
if (!std::equal(snap_state.key_vec->begin(), snap_state.key_vec->end(),
tmp_bitvec.get()->begin())) {
return Status::Corruption("Found inconsistent keys at this snapshot");
}
}
return Status::OK();
}
void StressTest::VerificationAbort(SharedState* shared, std::string msg,
Status s) const {
fprintf(stderr, "Verification failed: %s. Status is %s\n", msg.c_str(),
s.ToString().c_str());
shared->SetVerificationFailure();
}
void StressTest::VerificationAbort(SharedState* shared, std::string msg, int cf,
int64_t key) const {
auto key_str = Key(key);
Slice key_slice = key_str;
fprintf(stderr,
"Verification failed for column family %d key %s (%" PRIi64 "): %s\n",
cf, key_slice.ToString(true).c_str(), key, msg.c_str());
shared->SetVerificationFailure();
}
void StressTest::VerificationAbort(SharedState* shared, std::string msg, int cf,
int64_t key, Slice value_from_db,
Slice value_from_expected) const {
auto key_str = Key(key);
fprintf(stderr,
"Verification failed for column family %d key %s (%" PRIi64
"): value_from_db: %s, value_from_expected: %s, msg: %s\n",
cf, Slice(key_str).ToString(true).c_str(), key,
value_from_db.ToString(true).c_str(),
value_from_expected.ToString(true).c_str(), msg.c_str());
shared->SetVerificationFailure();
}
void StressTest::VerificationAbort(SharedState* shared, int cf, int64_t key,
const Slice& value,
const WideColumns& columns,
const WideColumns& expected_columns) const {
assert(shared);
auto key_str = Key(key);
fprintf(stderr,
"Verification failed for column family %d key %s (%" PRIi64
"): Value and columns inconsistent: %s\n",
cf, Slice(key_str).ToString(/* hex */ true).c_str(), key,
DebugString(value, columns, expected_columns).c_str());
shared->SetVerificationFailure();
}
std::string StressTest::DebugString(const Slice& value,
const WideColumns& columns,
const WideColumns& expected_columns) {
std::ostringstream oss;
oss << "value: " << value.ToString(/* hex */ true);
auto dump = [](const WideColumns& cols, std::ostream& os) {
if (cols.empty()) {
return;
}
os << std::hex;
auto it = cols.begin();
os << *it;
for (++it; it != cols.end(); ++it) {
os << ' ' << *it;
}
};
oss << ", columns: ";
dump(columns, oss);
oss << ", expected_columns: ";
dump(expected_columns, oss);
return oss.str();
}
void StressTest::PrintStatistics() {
if (dbstats) {
fprintf(stdout, "STATISTICS:\n%s\n", dbstats->ToString().c_str());
}
if (dbstats_secondaries) {
fprintf(stdout, "Secondary instances STATISTICS:\n%s\n",
dbstats_secondaries->ToString().c_str());
}
}
// Currently PreloadDb has to be single-threaded.
void StressTest::PreloadDbAndReopenAsReadOnly(int64_t number_of_keys,
SharedState* shared) {
WriteOptions write_opts;
write_opts.disableWAL = FLAGS_disable_wal;
if (FLAGS_sync) {
write_opts.sync = true;
}
if (FLAGS_rate_limit_auto_wal_flush) {
write_opts.rate_limiter_priority = Env::IO_USER;
}
char value[100];
int cf_idx = 0;
Status s;
for (auto cfh : column_families_) {
for (int64_t k = 0; k != number_of_keys; ++k) {
const std::string key = Key(k);
constexpr uint32_t value_base = 0;
const size_t sz = GenerateValue(value_base, value, sizeof(value));
const Slice v(value, sz);
shared->Put(cf_idx, k, value_base, true /* pending */);
std::string ts;
if (FLAGS_user_timestamp_size > 0) {
ts = GetNowNanos();
}
if (FLAGS_use_merge) {
if (!FLAGS_use_txn) {
if (FLAGS_user_timestamp_size > 0) {
s = db_->Merge(write_opts, cfh, key, ts, v);
} else {
s = db_->Merge(write_opts, cfh, key, v);
}
} else {
Transaction* txn;
s = NewTxn(write_opts, &txn);
if (s.ok()) {
s = txn->Merge(cfh, key, v);
if (s.ok()) {
s = CommitTxn(txn);
}
}
}
} else if (FLAGS_use_put_entity_one_in > 0) {
s = db_->PutEntity(write_opts, cfh, key,
GenerateWideColumns(value_base, v));
} else {
if (!FLAGS_use_txn) {
if (FLAGS_user_timestamp_size > 0) {
s = db_->Put(write_opts, cfh, key, ts, v);
} else {
s = db_->Put(write_opts, cfh, key, v);
}
} else {
Transaction* txn;
s = NewTxn(write_opts, &txn);
if (s.ok()) {
s = txn->Put(cfh, key, v);
if (s.ok()) {
s = CommitTxn(txn);
}
}
}
}
shared->Put(cf_idx, k, value_base, false /* pending */);
if (!s.ok()) {
break;
}
}
if (!s.ok()) {
break;
}
++cf_idx;
}
if (s.ok()) {
s = db_->Flush(FlushOptions(), column_families_);
}
if (s.ok()) {
for (auto cf : column_families_) {
delete cf;
}
column_families_.clear();
delete db_;
db_ = nullptr;
txn_db_ = nullptr;
db_preload_finished_.store(true);
auto now = clock_->NowMicros();
fprintf(stdout, "%s Reopening database in read-only\n",
clock_->TimeToString(now / 1000000).c_str());
// Reopen as read-only, can ignore all options related to updates
Open(shared);
} else {
fprintf(stderr, "Failed to preload db");
exit(1);
}
}
Status StressTest::SetOptions(ThreadState* thread) {
assert(FLAGS_set_options_one_in > 0);
std::unordered_map<std::string, std::string> opts;
std::string name =
options_index_[thread->rand.Next() % options_index_.size()];
int value_idx = thread->rand.Next() % options_table_[name].size();
if (name == "level0_file_num_compaction_trigger" ||
name == "level0_slowdown_writes_trigger" ||
name == "level0_stop_writes_trigger") {
opts["level0_file_num_compaction_trigger"] =
options_table_["level0_file_num_compaction_trigger"][value_idx];
opts["level0_slowdown_writes_trigger"] =
options_table_["level0_slowdown_writes_trigger"][value_idx];
opts["level0_stop_writes_trigger"] =
options_table_["level0_stop_writes_trigger"][value_idx];
} else {
opts[name] = options_table_[name][value_idx];
}
int rand_cf_idx = thread->rand.Next() % FLAGS_column_families;
auto cfh = column_families_[rand_cf_idx];
return db_->SetOptions(cfh, opts);
}
void StressTest::ProcessRecoveredPreparedTxns(SharedState* shared) {
assert(txn_db_);
std::vector<Transaction*> recovered_prepared_trans;
txn_db_->GetAllPreparedTransactions(&recovered_prepared_trans);
for (Transaction* txn : recovered_prepared_trans) {
ProcessRecoveredPreparedTxnsHelper(txn, shared);
delete txn;
}
recovered_prepared_trans.clear();
txn_db_->GetAllPreparedTransactions(&recovered_prepared_trans);
assert(recovered_prepared_trans.size() == 0);
}
void StressTest::ProcessRecoveredPreparedTxnsHelper(Transaction* txn,
SharedState* shared) {
thread_local Random rand(static_cast<uint32_t>(FLAGS_seed));
for (size_t i = 0; i < column_families_.size(); ++i) {
std::unique_ptr<WBWIIterator> wbwi_iter(
txn->GetWriteBatch()->NewIterator(column_families_[i]));
for (wbwi_iter->SeekToFirst(); wbwi_iter->Valid(); wbwi_iter->Next()) {
uint64_t key_val;
if (GetIntVal(wbwi_iter->Entry().key.ToString(), &key_val)) {
shared->Put(static_cast<int>(i) /* cf_idx */, key_val,
0 /* value_base */, true /* pending */);
}
}
}
if (rand.OneIn(2)) {
Status s = txn->Commit();
assert(s.ok());
} else {
Status s = txn->Rollback();
assert(s.ok());
}
}
Status StressTest::NewTxn(WriteOptions& write_opts, Transaction** txn) {
if (!FLAGS_use_txn) {
return Status::InvalidArgument("NewTxn when FLAGS_use_txn is not set");
}
write_opts.disableWAL = FLAGS_disable_wal;
static std::atomic<uint64_t> txn_id = {0};
TransactionOptions txn_options;
txn_options.use_only_the_last_commit_time_batch_for_recovery =
FLAGS_use_only_the_last_commit_time_batch_for_recovery;
txn_options.lock_timeout = 600000; // 10 min
txn_options.deadlock_detect = true;
*txn = txn_db_->BeginTransaction(write_opts, txn_options);
auto istr = std::to_string(txn_id.fetch_add(1));
Status s = (*txn)->SetName("xid" + istr);
return s;
}
Status StressTest::CommitTxn(Transaction* txn, ThreadState* thread) {
if (!FLAGS_use_txn) {
return Status::InvalidArgument("CommitTxn when FLAGS_use_txn is not set");
}
assert(txn_db_);
Status s = txn->Prepare();
std::shared_ptr<const Snapshot> timestamped_snapshot;
if (s.ok()) {
if (thread && FLAGS_create_timestamped_snapshot_one_in &&
thread->rand.OneIn(FLAGS_create_timestamped_snapshot_one_in)) {
uint64_t ts = db_stress_env->NowNanos();
s = txn->CommitAndTryCreateSnapshot(/*notifier=*/nullptr, ts,
×tamped_snapshot);
std::pair<Status, std::shared_ptr<const Snapshot>> res;
if (thread->tid == 0) {
uint64_t now = db_stress_env->NowNanos();
res = txn_db_->CreateTimestampedSnapshot(now);
if (res.first.ok()) {
assert(res.second);
assert(res.second->GetTimestamp() == now);
if (timestamped_snapshot) {
assert(res.second->GetTimestamp() >
timestamped_snapshot->GetTimestamp());
}
} else {
assert(!res.second);
}
}
} else {
s = txn->Commit();
}
}
if (thread && FLAGS_create_timestamped_snapshot_one_in > 0 &&
thread->rand.OneInOpt(50000)) {
uint64_t now = db_stress_env->NowNanos();
constexpr uint64_t time_diff = static_cast<uint64_t>(1000) * 1000 * 1000;
txn_db_->ReleaseTimestampedSnapshotsOlderThan(now - time_diff);
}
delete txn;
return s;
}
Status StressTest::RollbackTxn(Transaction* txn) {
if (!FLAGS_use_txn) {
return Status::InvalidArgument(
"RollbackTxn when FLAGS_use_txn is not"
" set");
}
Status s = txn->Rollback();
delete txn;
return s;
}
void StressTest::OperateDb(ThreadState* thread) {
ReadOptions read_opts(FLAGS_verify_checksum, true);
read_opts.rate_limiter_priority =
FLAGS_rate_limit_user_ops ? Env::IO_USER : Env::IO_TOTAL;
read_opts.async_io = FLAGS_async_io;
read_opts.adaptive_readahead = FLAGS_adaptive_readahead;
read_opts.readahead_size = FLAGS_readahead_size;
WriteOptions write_opts;
if (FLAGS_rate_limit_auto_wal_flush) {
write_opts.rate_limiter_priority = Env::IO_USER;
}
auto shared = thread->shared;
char value[100];
std::string from_db;
if (FLAGS_sync) {
write_opts.sync = true;
}
write_opts.disableWAL = FLAGS_disable_wal;
write_opts.protection_bytes_per_key = FLAGS_batch_protection_bytes_per_key;
const int prefix_bound = static_cast<int>(FLAGS_readpercent) +
static_cast<int>(FLAGS_prefixpercent);
const int write_bound = prefix_bound + static_cast<int>(FLAGS_writepercent);
const int del_bound = write_bound + static_cast<int>(FLAGS_delpercent);
const int delrange_bound =
del_bound + static_cast<int>(FLAGS_delrangepercent);
const int iterate_bound =
delrange_bound + static_cast<int>(FLAGS_iterpercent);
const uint64_t ops_per_open = FLAGS_ops_per_thread / (FLAGS_reopen + 1);
#ifndef NDEBUG
if (FLAGS_read_fault_one_in) {
fault_fs_guard->SetThreadLocalReadErrorContext(thread->shared->GetSeed(),
FLAGS_read_fault_one_in);
}
#endif // NDEBUG
if (FLAGS_write_fault_one_in) {
IOStatus error_msg;
if (FLAGS_injest_error_severity <= 1 || FLAGS_injest_error_severity > 2) {
error_msg = IOStatus::IOError("Retryable IO Error");
error_msg.SetRetryable(true);
} else if (FLAGS_injest_error_severity == 2) {
// Ingest the fatal error
error_msg = IOStatus::IOError("Fatal IO Error");
error_msg.SetDataLoss(true);
}
std::vector<FileType> types = {FileType::kTableFile,
FileType::kDescriptorFile,
FileType::kCurrentFile};
fault_fs_guard->SetRandomWriteError(
thread->shared->GetSeed(), FLAGS_write_fault_one_in, error_msg,
/*inject_for_all_file_types=*/false, types);
}
thread->stats.Start();
for (int open_cnt = 0; open_cnt <= FLAGS_reopen; ++open_cnt) {
if (thread->shared->HasVerificationFailedYet() ||
thread->shared->ShouldStopTest()) {
break;
}
if (open_cnt != 0) {
thread->stats.FinishedSingleOp();
MutexLock l(thread->shared->GetMutex());
while (!thread->snapshot_queue.empty()) {
db_->ReleaseSnapshot(thread->snapshot_queue.front().second.snapshot);
delete thread->snapshot_queue.front().second.key_vec;
thread->snapshot_queue.pop();
}
thread->shared->IncVotedReopen();
if (thread->shared->AllVotedReopen()) {
thread->shared->GetStressTest()->Reopen(thread);
thread->shared->GetCondVar()->SignalAll();
} else {
thread->shared->GetCondVar()->Wait();
}
// Commenting this out as we don't want to reset stats on each open.
// thread->stats.Start();
}
for (uint64_t i = 0; i < ops_per_open; i++) {
if (thread->shared->HasVerificationFailedYet()) {
break;
}
// Change Options
if (thread->rand.OneInOpt(FLAGS_set_options_one_in)) {
SetOptions(thread);
}
if (thread->rand.OneInOpt(FLAGS_set_in_place_one_in)) {
options_.inplace_update_support ^= options_.inplace_update_support;
}
if (thread->tid == 0 && FLAGS_verify_db_one_in > 0 &&
thread->rand.OneIn(FLAGS_verify_db_one_in)) {
ContinuouslyVerifyDb(thread);
if (thread->shared->ShouldStopTest()) {
break;
}
}
MaybeClearOneColumnFamily(thread);
if (thread->rand.OneInOpt(FLAGS_manual_wal_flush_one_in)) {
bool sync = thread->rand.OneIn(2) ? true : false;
Status s = db_->FlushWAL(sync);
if (!s.ok() && !(sync && s.IsNotSupported())) {
fprintf(stderr, "FlushWAL(sync=%s) failed: %s\n",
(sync ? "true" : "false"), s.ToString().c_str());
}
}
if (thread->rand.OneInOpt(FLAGS_lock_wal_one_in)) {
Status s = db_->LockWAL();
if (!s.ok()) {
fprintf(stderr, "LockWAL() failed: %s\n", s.ToString().c_str());
} else {
auto old_seqno = db_->GetLatestSequenceNumber();
// Yield for a while
do {
std::this_thread::yield();
} while (thread->rand.OneIn(2));
// Latest seqno should not have changed
auto new_seqno = db_->GetLatestSequenceNumber();
if (old_seqno != new_seqno) {
fprintf(
stderr,
"Failure: latest seqno changed from %u to %u with WAL locked\n",
(unsigned)old_seqno, (unsigned)new_seqno);
}
s = db_->UnlockWAL();
if (!s.ok()) {
fprintf(stderr, "UnlockWAL() failed: %s\n", s.ToString().c_str());
}
}
}
if (thread->rand.OneInOpt(FLAGS_sync_wal_one_in)) {
Status s = db_->SyncWAL();
if (!s.ok() && !s.IsNotSupported()) {
fprintf(stderr, "SyncWAL() failed: %s\n", s.ToString().c_str());
}
}
int rand_column_family = thread->rand.Next() % FLAGS_column_families;
ColumnFamilyHandle* column_family = column_families_[rand_column_family];
if (thread->rand.OneInOpt(FLAGS_compact_files_one_in)) {
TestCompactFiles(thread, column_family);
}
int64_t rand_key = GenerateOneKey(thread, i);
std::string keystr = Key(rand_key);
Slice key = keystr;
if (thread->rand.OneInOpt(FLAGS_compact_range_one_in)) {
TestCompactRange(thread, rand_key, key, column_family);
if (thread->shared->HasVerificationFailedYet()) {
break;
}
}
std::vector<int> rand_column_families =
GenerateColumnFamilies(FLAGS_column_families, rand_column_family);
if (thread->rand.OneInOpt(FLAGS_flush_one_in)) {
Status status = TestFlush(rand_column_families);
if (!status.ok()) {
fprintf(stdout, "Unable to perform Flush(): %s\n",
status.ToString().c_str());
}
}
// Verify GetLiveFiles with a 1 in N chance.
if (thread->rand.OneInOpt(FLAGS_get_live_files_one_in) &&
!FLAGS_write_fault_one_in) {
Status status = VerifyGetLiveFiles();
if (!status.ok()) {
VerificationAbort(shared, "VerifyGetLiveFiles status not OK", status);
}
}
// Verify GetSortedWalFiles with a 1 in N chance.
if (thread->rand.OneInOpt(FLAGS_get_sorted_wal_files_one_in)) {
Status status = VerifyGetSortedWalFiles();
if (!status.ok()) {
VerificationAbort(shared, "VerifyGetSortedWalFiles status not OK",
status);
}
}
// Verify GetCurrentWalFile with a 1 in N chance.
if (thread->rand.OneInOpt(FLAGS_get_current_wal_file_one_in)) {
Status status = VerifyGetCurrentWalFile();
if (!status.ok()) {
VerificationAbort(shared, "VerifyGetCurrentWalFile status not OK",
status);
}
}
if (thread->rand.OneInOpt(FLAGS_pause_background_one_in)) {
Status status = TestPauseBackground(thread);
if (!status.ok()) {
VerificationAbort(
shared, "Pause/ContinueBackgroundWork status not OK", status);
}
}
if (thread->rand.OneInOpt(FLAGS_verify_checksum_one_in)) {
Status status = db_->VerifyChecksum();
if (!status.ok()) {
VerificationAbort(shared, "VerifyChecksum status not OK", status);
}
}
if (thread->rand.OneInOpt(FLAGS_get_property_one_in)) {
TestGetProperty(thread);
}
std::vector<int64_t> rand_keys = GenerateKeys(rand_key);
if (thread->rand.OneInOpt(FLAGS_ingest_external_file_one_in)) {
TestIngestExternalFile(thread, rand_column_families, rand_keys);
}
if (thread->rand.OneInOpt(FLAGS_backup_one_in)) {
// Beyond a certain DB size threshold, this test becomes heavier than
// it's worth.
uint64_t total_size = 0;
if (FLAGS_backup_max_size > 0) {
std::vector<FileAttributes> files;
db_stress_env->GetChildrenFileAttributes(FLAGS_db, &files);
for (auto& file : files) {
total_size += file.size_bytes;
}
}
if (total_size <= FLAGS_backup_max_size) {
Status s = TestBackupRestore(thread, rand_column_families, rand_keys);
if (!s.ok()) {
VerificationAbort(shared, "Backup/restore gave inconsistent state",
s);
}
}
}
if (thread->rand.OneInOpt(FLAGS_checkpoint_one_in)) {
Status s = TestCheckpoint(thread, rand_column_families, rand_keys);
if (!s.ok()) {
VerificationAbort(shared, "Checkpoint gave inconsistent state", s);
}
}
if (thread->rand.OneInOpt(FLAGS_approximate_size_one_in)) {
Status s =
TestApproximateSize(thread, i, rand_column_families, rand_keys);
if (!s.ok()) {
VerificationAbort(shared, "ApproximateSize Failed", s);
}
}
if (thread->rand.OneInOpt(FLAGS_acquire_snapshot_one_in)) {
TestAcquireSnapshot(thread, rand_column_family, keystr, i);
}
/*always*/ {
Status s = MaybeReleaseSnapshots(thread, i);
if (!s.ok()) {
VerificationAbort(shared, "Snapshot gave inconsistent state", s);
}
}
// Assign timestamps if necessary.
std::string read_ts_str;
Slice read_ts;
if (FLAGS_user_timestamp_size > 0) {
read_ts_str = GetNowNanos();
read_ts = read_ts_str;
read_opts.timestamp = &read_ts;
}
int prob_op = thread->rand.Uniform(100);
// Reset this in case we pick something other than a read op. We don't
// want to use a stale value when deciding at the beginning of the loop
// whether to vote to reopen
if (prob_op >= 0 && prob_op < static_cast<int>(FLAGS_readpercent)) {
assert(0 <= prob_op);
// OPERATION read
if (FLAGS_use_multiget) {
// Leave room for one more iteration of the loop with a single key
// batch. This is to ensure that each thread does exactly the same
// number of ops
int multiget_batch_size = static_cast<int>(
std::min(static_cast<uint64_t>(thread->rand.Uniform(64)),
FLAGS_ops_per_thread - i - 1));
// If its the last iteration, ensure that multiget_batch_size is 1
multiget_batch_size = std::max(multiget_batch_size, 1);
rand_keys = GenerateNKeys(thread, multiget_batch_size, i);
TestMultiGet(thread, read_opts, rand_column_families, rand_keys);
i += multiget_batch_size - 1;
} else {
TestGet(thread, read_opts, rand_column_families, rand_keys);
}
} else if (prob_op < prefix_bound) {
assert(static_cast<int>(FLAGS_readpercent) <= prob_op);
// OPERATION prefix scan
// keys are 8 bytes long, prefix size is FLAGS_prefix_size. There are
// (8 - FLAGS_prefix_size) bytes besides the prefix. So there will
// be 2 ^ ((8 - FLAGS_prefix_size) * 8) possible keys with the same
// prefix
TestPrefixScan(thread, read_opts, rand_column_families, rand_keys);
} else if (prob_op < write_bound) {
assert(prefix_bound <= prob_op);
// OPERATION write
TestPut(thread, write_opts, read_opts, rand_column_families, rand_keys,
value);
} else if (prob_op < del_bound) {
assert(write_bound <= prob_op);
// OPERATION delete
TestDelete(thread, write_opts, rand_column_families, rand_keys);
} else if (prob_op < delrange_bound) {
assert(del_bound <= prob_op);
// OPERATION delete range
TestDeleteRange(thread, write_opts, rand_column_families, rand_keys);
} else if (prob_op < iterate_bound) {
assert(delrange_bound <= prob_op);
// OPERATION iterate
if (!FLAGS_skip_verifydb &&
thread->rand.OneInOpt(
FLAGS_verify_iterator_with_expected_state_one_in)) {
TestIterateAgainstExpected(thread, read_opts, rand_column_families,
rand_keys);
} else {
int num_seeks = static_cast<int>(std::min(
std::max(static_cast<uint64_t>(thread->rand.Uniform(4)),
static_cast<uint64_t>(1)),
std::max(static_cast<uint64_t>(FLAGS_ops_per_thread - i - 1),
static_cast<uint64_t>(1))));
rand_keys = GenerateNKeys(thread, num_seeks, i);
i += num_seeks - 1;
TestIterate(thread, read_opts, rand_column_families, rand_keys);
}
} else {
assert(iterate_bound <= prob_op);
TestCustomOperations(thread, rand_column_families);
}
thread->stats.FinishedSingleOp();
}
}
while (!thread->snapshot_queue.empty()) {
db_->ReleaseSnapshot(thread->snapshot_queue.front().second.snapshot);
delete thread->snapshot_queue.front().second.key_vec;
thread->snapshot_queue.pop();
}
thread->stats.Stop();
}
// Generated a list of keys that close to boundaries of SST keys.
// If there isn't any SST file in the DB, return empty list.
std::vector<std::string> StressTest::GetWhiteBoxKeys(ThreadState* thread,
DB* db,
ColumnFamilyHandle* cfh,
size_t num_keys) {
ColumnFamilyMetaData cfmd;
db->GetColumnFamilyMetaData(cfh, &cfmd);
std::vector<std::string> boundaries;
for (const LevelMetaData& lmd : cfmd.levels) {
for (const SstFileMetaData& sfmd : lmd.files) {
// If FLAGS_user_timestamp_size > 0, then both smallestkey and largestkey
// have timestamps.
const auto& skey = sfmd.smallestkey;
const auto& lkey = sfmd.largestkey;
assert(skey.size() >= FLAGS_user_timestamp_size);
assert(lkey.size() >= FLAGS_user_timestamp_size);
boundaries.push_back(
skey.substr(0, skey.size() - FLAGS_user_timestamp_size));
boundaries.push_back(
lkey.substr(0, lkey.size() - FLAGS_user_timestamp_size));
}
}
if (boundaries.empty()) {
return {};
}
std::vector<std::string> ret;
for (size_t j = 0; j < num_keys; j++) {
std::string k =
boundaries[thread->rand.Uniform(static_cast<int>(boundaries.size()))];
if (thread->rand.OneIn(3)) {
// Reduce one byte from the string
for (int i = static_cast<int>(k.length()) - 1; i >= 0; i--) {
uint8_t cur = k[i];
if (cur > 0) {
k[i] = static_cast<char>(cur - 1);
break;
} else if (i > 0) {
k[i] = 0xFFu;
}
}
} else if (thread->rand.OneIn(2)) {
// Add one byte to the string
for (int i = static_cast<int>(k.length()) - 1; i >= 0; i--) {
uint8_t cur = k[i];
if (cur < 255) {
k[i] = static_cast<char>(cur + 1);
break;
} else if (i > 0) {
k[i] = 0x00;
}
}
}
ret.push_back(k);
}
return ret;
}
// Given a key K, this creates an iterator which scans to K and then
// does a random sequence of Next/Prev operations.
Status StressTest::TestIterate(ThreadState* thread,
const ReadOptions& read_opts,
const std::vector<int>& rand_column_families,
const std::vector<int64_t>& rand_keys) {
assert(!rand_column_families.empty());
assert(!rand_keys.empty());
ManagedSnapshot snapshot_guard(db_);
ReadOptions ro = read_opts;
ro.snapshot = snapshot_guard.snapshot();
std::string read_ts_str;
Slice read_ts_slice;
MaybeUseOlderTimestampForRangeScan(thread, read_ts_str, read_ts_slice, ro);
bool expect_total_order = false;
if (thread->rand.OneIn(16)) {
// When prefix extractor is used, it's useful to cover total order seek.
ro.total_order_seek = true;
expect_total_order = true;
} else if (thread->rand.OneIn(4)) {
ro.total_order_seek = false;
ro.auto_prefix_mode = true;
expect_total_order = true;
} else if (options_.prefix_extractor.get() == nullptr) {
expect_total_order = true;
}
std::string upper_bound_str;
Slice upper_bound;
if (thread->rand.OneIn(16)) {
// With a 1/16 chance, set an iterator upper bound.
// Note: upper_bound can be smaller than the seek key.
const int64_t rand_upper_key = GenerateOneKey(thread, FLAGS_ops_per_thread);
upper_bound_str = Key(rand_upper_key);
upper_bound = Slice(upper_bound_str);
ro.iterate_upper_bound = &upper_bound;
}
std::string lower_bound_str;
Slice lower_bound;
if (thread->rand.OneIn(16)) {
// With a 1/16 chance, enable iterator lower bound.
// Note: lower_bound can be greater than the seek key.
const int64_t rand_lower_key = GenerateOneKey(thread, FLAGS_ops_per_thread);
lower_bound_str = Key(rand_lower_key);
lower_bound = Slice(lower_bound_str);
ro.iterate_lower_bound = &lower_bound;
}
ColumnFamilyHandle* const cfh = column_families_[rand_column_families[0]];
assert(cfh);
std::unique_ptr<Iterator> iter(db_->NewIterator(ro, cfh));
std::vector<std::string> key_strs;
if (thread->rand.OneIn(16)) {
// Generate keys close to lower or upper bound of SST files.
key_strs = GetWhiteBoxKeys(thread, db_, cfh, rand_keys.size());
}
if (key_strs.empty()) {
// Use the random keys passed in.
for (int64_t rkey : rand_keys) {
key_strs.push_back(Key(rkey));
}
}
std::string op_logs;
constexpr size_t kOpLogsLimit = 10000;
for (const std::string& key_str : key_strs) {
if (op_logs.size() > kOpLogsLimit) {
// Shouldn't take too much memory for the history log. Clear it.
op_logs = "(cleared...)\n";
}
if (ro.iterate_upper_bound != nullptr && thread->rand.OneIn(2)) {
// With a 1/2 chance, change the upper bound.
// It is possible that it is changed before first use, but there is no
// problem with that.
const int64_t rand_upper_key =
GenerateOneKey(thread, FLAGS_ops_per_thread);
upper_bound_str = Key(rand_upper_key);
upper_bound = Slice(upper_bound_str);
}
if (ro.iterate_lower_bound != nullptr && thread->rand.OneIn(4)) {
// With a 1/4 chance, change the lower bound.
// It is possible that it is changed before first use, but there is no
// problem with that.
const int64_t rand_lower_key =
GenerateOneKey(thread, FLAGS_ops_per_thread);
lower_bound_str = Key(rand_lower_key);
lower_bound = Slice(lower_bound_str);
}
// Record some options to op_logs
op_logs += "total_order_seek: ";
op_logs += (ro.total_order_seek ? "1 " : "0 ");
op_logs += "auto_prefix_mode: ";
op_logs += (ro.auto_prefix_mode ? "1 " : "0 ");
if (ro.iterate_upper_bound != nullptr) {
op_logs += "ub: " + upper_bound.ToString(true) + " ";
}
if (ro.iterate_lower_bound != nullptr) {
op_logs += "lb: " + lower_bound.ToString(true) + " ";
}
// Set up an iterator, perform the same operations without bounds and with
// total order seek, and compare the results. This is to identify bugs
// related to bounds, prefix extractor, or reseeking. Sometimes we are
// comparing iterators with the same set-up, and it doesn't hurt to check
// them to be equal.
//
// This `ReadOptions` is for validation purposes. Ignore
// `FLAGS_rate_limit_user_ops` to avoid slowing any validation.
ReadOptions cmp_ro;
cmp_ro.timestamp = ro.timestamp;
cmp_ro.iter_start_ts = ro.iter_start_ts;
cmp_ro.snapshot = snapshot_guard.snapshot();
cmp_ro.total_order_seek = true;
ColumnFamilyHandle* const cmp_cfh =
GetControlCfh(thread, rand_column_families[0]);
assert(cmp_cfh);
std::unique_ptr<Iterator> cmp_iter(db_->NewIterator(cmp_ro, cmp_cfh));
bool diverged = false;
Slice key(key_str);
const bool support_seek_first_or_last = expect_total_order;
LastIterateOp last_op;
if (support_seek_first_or_last && thread->rand.OneIn(100)) {
iter->SeekToFirst();
cmp_iter->SeekToFirst();
last_op = kLastOpSeekToFirst;
op_logs += "STF ";
} else if (support_seek_first_or_last && thread->rand.OneIn(100)) {
iter->SeekToLast();
cmp_iter->SeekToLast();
last_op = kLastOpSeekToLast;
op_logs += "STL ";
} else if (thread->rand.OneIn(8)) {
iter->SeekForPrev(key);
cmp_iter->SeekForPrev(key);
last_op = kLastOpSeekForPrev;
op_logs += "SFP " + key.ToString(true) + " ";
} else {
iter->Seek(key);
cmp_iter->Seek(key);
last_op = kLastOpSeek;
op_logs += "S " + key.ToString(true) + " ";
}
VerifyIterator(thread, cmp_cfh, ro, iter.get(), cmp_iter.get(), last_op,
key, op_logs, &diverged);
const bool no_reverse =
(FLAGS_memtablerep == "prefix_hash" && !expect_total_order);
for (uint64_t i = 0; i < FLAGS_num_iterations && iter->Valid(); ++i) {
if (no_reverse || thread->rand.OneIn(2)) {
iter->Next();
if (!diverged) {
assert(cmp_iter->Valid());
cmp_iter->Next();
}
op_logs += "N";
} else {
iter->Prev();
if (!diverged) {
assert(cmp_iter->Valid());
cmp_iter->Prev();
}
op_logs += "P";
}
last_op = kLastOpNextOrPrev;
VerifyIterator(thread, cmp_cfh, ro, iter.get(), cmp_iter.get(), last_op,
key, op_logs, &diverged);
}
thread->stats.AddIterations(1);
op_logs += "; ";
}
return Status::OK();
}
// Test the return status of GetLiveFiles.
Status StressTest::VerifyGetLiveFiles() const {
std::vector<std::string> live_file;
uint64_t manifest_size = 0;
return db_->GetLiveFiles(live_file, &manifest_size);
}
// Test the return status of GetSortedWalFiles.
Status StressTest::VerifyGetSortedWalFiles() const {
VectorLogPtr log_ptr;
return db_->GetSortedWalFiles(log_ptr);
}
// Test the return status of GetCurrentWalFile.
Status StressTest::VerifyGetCurrentWalFile() const {
std::unique_ptr<LogFile> cur_wal_file;
return db_->GetCurrentWalFile(&cur_wal_file);
}
// Compare the two iterator, iter and cmp_iter are in the same position,
// unless iter might be made invalidate or undefined because of
// upper or lower bounds, or prefix extractor.
// Will flag failure if the verification fails.
// diverged = true if the two iterator is already diverged.
// True if verification passed, false if not.
void StressTest::VerifyIterator(ThreadState* thread,
ColumnFamilyHandle* cmp_cfh,
const ReadOptions& ro, Iterator* iter,
Iterator* cmp_iter, LastIterateOp op,
const Slice& seek_key,
const std::string& op_logs, bool* diverged) {
assert(diverged);
if (*diverged) {
return;
}
if (ro.iter_start_ts != nullptr) {
assert(FLAGS_user_timestamp_size > 0);
// We currently do not verify iterator when dumping history of internal
// keys.
*diverged = true;
return;
}
if (op == kLastOpSeekToFirst && ro.iterate_lower_bound != nullptr) {
// SeekToFirst() with lower bound is not well defined.
*diverged = true;
return;
} else if (op == kLastOpSeekToLast && ro.iterate_upper_bound != nullptr) {
// SeekToLast() with higher bound is not well defined.
*diverged = true;
return;
} else if (op == kLastOpSeek && ro.iterate_lower_bound != nullptr &&
(options_.comparator->CompareWithoutTimestamp(
*ro.iterate_lower_bound, /*a_has_ts=*/false, seek_key,
/*b_has_ts=*/false) >= 0 ||
(ro.iterate_upper_bound != nullptr &&
options_.comparator->CompareWithoutTimestamp(
*ro.iterate_lower_bound, /*a_has_ts=*/false,
*ro.iterate_upper_bound, /*b_has_ts*/ false) >= 0))) {
// Lower bound behavior is not well defined if it is larger than
// seek key or upper bound. Disable the check for now.
*diverged = true;
return;
} else if (op == kLastOpSeekForPrev && ro.iterate_upper_bound != nullptr &&
(options_.comparator->CompareWithoutTimestamp(
*ro.iterate_upper_bound, /*a_has_ts=*/false, seek_key,
/*b_has_ts=*/false) <= 0 ||
(ro.iterate_lower_bound != nullptr &&
options_.comparator->CompareWithoutTimestamp(
*ro.iterate_lower_bound, /*a_has_ts=*/false,
*ro.iterate_upper_bound, /*b_has_ts=*/false) >= 0))) {
// Uppder bound behavior is not well defined if it is smaller than
// seek key or lower bound. Disable the check for now.
*diverged = true;
return;
}
const SliceTransform* pe = (ro.total_order_seek || ro.auto_prefix_mode)
? nullptr
: options_.prefix_extractor.get();
const Comparator* cmp = options_.comparator;
if (iter->Valid() && !cmp_iter->Valid()) {
if (pe != nullptr) {
if (!pe->InDomain(seek_key)) {
// Prefix seek a non-in-domain key is undefined. Skip checking for
// this scenario.
*diverged = true;
return;
} else if (!pe->InDomain(iter->key())) {
// out of range is iterator key is not in domain anymore.
*diverged = true;
return;
} else if (pe->Transform(iter->key()) != pe->Transform(seek_key)) {
*diverged = true;
return;
}
}
fprintf(stderr,
"Control interator is invalid but iterator has key %s "
"%s\n",
iter->key().ToString(true).c_str(), op_logs.c_str());
*diverged = true;
} else if (cmp_iter->Valid()) {
// Iterator is not valid. It can be legimate if it has already been
// out of upper or lower bound, or filtered out by prefix iterator.
const Slice& total_order_key = cmp_iter->key();
if (pe != nullptr) {
if (!pe->InDomain(seek_key)) {
// Prefix seek a non-in-domain key is undefined. Skip checking for
// this scenario.
*diverged = true;
return;
}
if (!pe->InDomain(total_order_key) ||
pe->Transform(total_order_key) != pe->Transform(seek_key)) {
// If the prefix is exhausted, the only thing needs to check
// is the iterator isn't return a position in prefix.
// Either way, checking can stop from here.
*diverged = true;
if (!iter->Valid() || !pe->InDomain(iter->key()) ||
pe->Transform(iter->key()) != pe->Transform(seek_key)) {
return;
}
fprintf(stderr,
"Iterator stays in prefix but contol doesn't"
" iterator key %s control iterator key %s %s\n",
iter->key().ToString(true).c_str(),
cmp_iter->key().ToString(true).c_str(), op_logs.c_str());
}
}
// Check upper or lower bounds.
if (!*diverged) {
if ((iter->Valid() && iter->key() != cmp_iter->key()) ||
(!iter->Valid() &&
(ro.iterate_upper_bound == nullptr ||
cmp->CompareWithoutTimestamp(total_order_key, /*a_has_ts=*/false,
*ro.iterate_upper_bound,
/*b_has_ts=*/false) < 0) &&
(ro.iterate_lower_bound == nullptr ||
cmp->CompareWithoutTimestamp(total_order_key, /*a_has_ts=*/false,
*ro.iterate_lower_bound,
/*b_has_ts=*/false) > 0))) {
fprintf(stderr,
"Iterator diverged from control iterator which"
" has value %s %s\n",
total_order_key.ToString(true).c_str(), op_logs.c_str());
if (iter->Valid()) {
fprintf(stderr, "iterator has value %s\n",
iter->key().ToString(true).c_str());
} else {
fprintf(stderr, "iterator is not valid\n");
}
*diverged = true;
}
}
}
if (!*diverged && iter->Valid()) {
const WideColumns expected_columns =
GenerateExpectedWideColumns(GetValueBase(iter->value()), iter->value());
if (iter->columns() != expected_columns) {
fprintf(stderr, "Value and columns inconsistent for iterator: %s\n",
DebugString(iter->value(), iter->columns(), expected_columns)
.c_str());
*diverged = true;
}
}
if (*diverged) {
fprintf(stderr, "Control CF %s\n", cmp_cfh->GetName().c_str());
thread->stats.AddErrors(1);
// Fail fast to preserve the DB state.
thread->shared->SetVerificationFailure();
}
}
Status StressTest::TestBackupRestore(
ThreadState* thread, const std::vector<int>& rand_column_families,
const std::vector<int64_t>& rand_keys) {
std::vector<std::unique_ptr<MutexLock>> locks;
if (ShouldAcquireMutexOnKey()) {
for (int rand_column_family : rand_column_families) {
// `rand_keys[0]` on each chosen CF will be verified.
locks.emplace_back(new MutexLock(
thread->shared->GetMutexForKey(rand_column_family, rand_keys[0])));
}
}
const std::string backup_dir =
FLAGS_db + "/.backup" + std::to_string(thread->tid);
const std::string restore_dir =
FLAGS_db + "/.restore" + std::to_string(thread->tid);
BackupEngineOptions backup_opts(backup_dir);
// For debugging, get info_log from live options
backup_opts.info_log = db_->GetDBOptions().info_log.get();
if (thread->rand.OneIn(10)) {
backup_opts.share_table_files = false;
} else {
backup_opts.share_table_files = true;
if (thread->rand.OneIn(5)) {
backup_opts.share_files_with_checksum = false;
} else {
backup_opts.share_files_with_checksum = true;
if (thread->rand.OneIn(2)) {
// old
backup_opts.share_files_with_checksum_naming =
BackupEngineOptions::kLegacyCrc32cAndFileSize;
} else {
// new
backup_opts.share_files_with_checksum_naming =
BackupEngineOptions::kUseDbSessionId;
}
if (thread->rand.OneIn(2)) {
backup_opts.share_files_with_checksum_naming =
backup_opts.share_files_with_checksum_naming |
BackupEngineOptions::kFlagIncludeFileSize;
}
}
}
if (thread->rand.OneIn(2)) {
backup_opts.schema_version = 1;
} else {
backup_opts.schema_version = 2;
}
BackupEngine* backup_engine = nullptr;
std::string from = "a backup/restore operation";
Status s = BackupEngine::Open(db_stress_env, backup_opts, &backup_engine);
if (!s.ok()) {
from = "BackupEngine::Open";
}
if (s.ok()) {
if (backup_opts.schema_version >= 2 && thread->rand.OneIn(2)) {
TEST_BackupMetaSchemaOptions test_opts;
test_opts.crc32c_checksums = thread->rand.OneIn(2) == 0;
test_opts.file_sizes = thread->rand.OneIn(2) == 0;
TEST_SetBackupMetaSchemaOptions(backup_engine, test_opts);
}
CreateBackupOptions create_opts;
if (FLAGS_disable_wal) {
// The verification can only work when latest value of `key` is backed up,
// which requires flushing in case of WAL disabled.
//
// Note this triggers a flush with a key lock held. Meanwhile, operations
// like flush/compaction may attempt to grab key locks like in
// `DbStressCompactionFilter`. The philosophy around preventing deadlock
// is the background operation key lock acquisition only tries but does
// not wait for the lock. So here in the foreground it is OK to hold the
// lock and wait on a background operation (flush).
create_opts.flush_before_backup = true;
}
s = backup_engine->CreateNewBackup(create_opts, db_);
if (!s.ok()) {
from = "BackupEngine::CreateNewBackup";
}
}
if (s.ok()) {
delete backup_engine;
backup_engine = nullptr;
s = BackupEngine::Open(db_stress_env, backup_opts, &backup_engine);
if (!s.ok()) {
from = "BackupEngine::Open (again)";
}
}
std::vector<BackupInfo> backup_info;
// If inplace_not_restore, we verify the backup by opening it as a
// read-only DB. If !inplace_not_restore, we restore it to a temporary
// directory for verification.
bool inplace_not_restore = thread->rand.OneIn(3);
if (s.ok()) {
backup_engine->GetBackupInfo(&backup_info,
/*include_file_details*/ inplace_not_restore);
if (backup_info.empty()) {
s = Status::NotFound("no backups found");
from = "BackupEngine::GetBackupInfo";
}
}
if (s.ok() && thread->rand.OneIn(2)) {
s = backup_engine->VerifyBackup(
backup_info.front().backup_id,
thread->rand.OneIn(2) /* verify_with_checksum */);
if (!s.ok()) {
from = "BackupEngine::VerifyBackup";
}
}
const bool allow_persistent = thread->tid == 0; // not too many
bool from_latest = false;
int count = static_cast<int>(backup_info.size());
if (s.ok() && !inplace_not_restore) {
if (count > 1) {
s = backup_engine->RestoreDBFromBackup(
RestoreOptions(), backup_info[thread->rand.Uniform(count)].backup_id,
restore_dir /* db_dir */, restore_dir /* wal_dir */);
if (!s.ok()) {
from = "BackupEngine::RestoreDBFromBackup";
}
} else {
from_latest = true;
s = backup_engine->RestoreDBFromLatestBackup(RestoreOptions(),
restore_dir /* db_dir */,
restore_dir /* wal_dir */);
if (!s.ok()) {
from = "BackupEngine::RestoreDBFromLatestBackup";
}
}
}
if (s.ok() && !inplace_not_restore) {
// Purge early if restoring, to ensure the restored directory doesn't
// have some secret dependency on the backup directory.
uint32_t to_keep = 0;
if (allow_persistent) {
// allow one thread to keep up to 2 backups
to_keep = thread->rand.Uniform(3);
}
s = backup_engine->PurgeOldBackups(to_keep);
if (!s.ok()) {
from = "BackupEngine::PurgeOldBackups";
}
}
DB* restored_db = nullptr;
std::vector<ColumnFamilyHandle*> restored_cf_handles;
// Not yet implemented: opening restored BlobDB or TransactionDB
if (s.ok() && !FLAGS_use_txn && !FLAGS_use_blob_db) {
Options restore_options(options_);
restore_options.best_efforts_recovery = false;
restore_options.listeners.clear();
// Avoid dangling/shared file descriptors, for reliable destroy
restore_options.sst_file_manager = nullptr;
std::vector<ColumnFamilyDescriptor> cf_descriptors;
// TODO(ajkr): `column_family_names_` is not safe to access here when
// `clear_column_family_one_in != 0`. But we can't easily switch to
// `ListColumnFamilies` to get names because it won't necessarily give
// the same order as `column_family_names_`.
assert(FLAGS_clear_column_family_one_in == 0);
for (auto name : column_family_names_) {
cf_descriptors.emplace_back(name, ColumnFamilyOptions(restore_options));
}
if (inplace_not_restore) {
BackupInfo& info = backup_info[thread->rand.Uniform(count)];
restore_options.env = info.env_for_open.get();
s = DB::OpenForReadOnly(DBOptions(restore_options), info.name_for_open,
cf_descriptors, &restored_cf_handles,
&restored_db);
if (!s.ok()) {
from = "DB::OpenForReadOnly in backup/restore";
}
} else {
s = DB::Open(DBOptions(restore_options), restore_dir, cf_descriptors,
&restored_cf_handles, &restored_db);
if (!s.ok()) {
from = "DB::Open in backup/restore";
}
}
}
// Note the column families chosen by `rand_column_families` cannot be
// dropped while the locks for `rand_keys` are held. So we should not have
// to worry about accessing those column families throughout this function.
//
// For simplicity, currently only verifies existence/non-existence of a
// single key
for (size_t i = 0; restored_db && s.ok() && i < rand_column_families.size();
++i) {
std::string key_str = Key(rand_keys[0]);
Slice key = key_str;
std::string restored_value;
// This `ReadOptions` is for validation purposes. Ignore
// `FLAGS_rate_limit_user_ops` to avoid slowing any validation.
ReadOptions read_opts;
std::string ts_str;
Slice ts;
if (FLAGS_user_timestamp_size > 0) {
ts_str = GetNowNanos();
ts = ts_str;
read_opts.timestamp = &ts;
}
Status get_status = restored_db->Get(
read_opts, restored_cf_handles[rand_column_families[i]], key,
&restored_value);
bool exists = thread->shared->Exists(rand_column_families[i], rand_keys[0]);
if (get_status.ok()) {
if (!exists && from_latest && ShouldAcquireMutexOnKey()) {
std::ostringstream oss;
oss << "0x" << key.ToString(true)
<< " exists in restore but not in original db";
s = Status::Corruption(oss.str());
}
} else if (get_status.IsNotFound()) {
if (exists && from_latest && ShouldAcquireMutexOnKey()) {
std::ostringstream oss;
oss << "0x" << key.ToString(true)
<< " exists in original db but not in restore";
s = Status::Corruption(oss.str());
}
} else {
s = get_status;
if (!s.ok()) {
from = "DB::Get in backup/restore";
}
}
}
if (restored_db != nullptr) {
for (auto* cf_handle : restored_cf_handles) {
restored_db->DestroyColumnFamilyHandle(cf_handle);
}
delete restored_db;
restored_db = nullptr;
}
if (s.ok() && inplace_not_restore) {
// Purge late if inplace open read-only
uint32_t to_keep = 0;
if (allow_persistent) {
// allow one thread to keep up to 2 backups
to_keep = thread->rand.Uniform(3);
}
s = backup_engine->PurgeOldBackups(to_keep);
if (!s.ok()) {
from = "BackupEngine::PurgeOldBackups";
}
}
if (backup_engine != nullptr) {
delete backup_engine;
backup_engine = nullptr;
}
if (s.ok()) {
// Preserve directories on failure, or allowed persistent backup
if (!allow_persistent) {
s = DestroyDir(db_stress_env, backup_dir);
if (!s.ok()) {
from = "Destroy backup dir";
}
}
}
if (s.ok()) {
s = DestroyDir(db_stress_env, restore_dir);
if (!s.ok()) {
from = "Destroy restore dir";
}
}
if (!s.ok()) {
fprintf(stderr, "Failure in %s with: %s\n", from.c_str(),
s.ToString().c_str());
}
return s;
}
Status StressTest::TestApproximateSize(
ThreadState* thread, uint64_t iteration,
const std::vector<int>& rand_column_families,
const std::vector<int64_t>& rand_keys) {
// rand_keys likely only has one key. Just use the first one.
assert(!rand_keys.empty());
assert(!rand_column_families.empty());
int64_t key1 = rand_keys[0];
int64_t key2;
if (thread->rand.OneIn(2)) {
// Two totally random keys. This tends to cover large ranges.
key2 = GenerateOneKey(thread, iteration);
if (key2 < key1) {
std::swap(key1, key2);
}
} else {
// Unless users pass a very large FLAGS_max_key, it we should not worry
// about overflow. It is for testing, so we skip the overflow checking
// for simplicity.
key2 = key1 + static_cast<int64_t>(thread->rand.Uniform(1000));
}
std::string key1_str = Key(key1);
std::string key2_str = Key(key2);
Range range{Slice(key1_str), Slice(key2_str)};
SizeApproximationOptions sao;
sao.include_memtables = thread->rand.OneIn(2);
if (sao.include_memtables) {
sao.include_files = thread->rand.OneIn(2);
}
if (thread->rand.OneIn(2)) {
if (thread->rand.OneIn(2)) {
sao.files_size_error_margin = 0.0;
} else {
sao.files_size_error_margin =
static_cast<double>(thread->rand.Uniform(3));
}
}
uint64_t result;
return db_->GetApproximateSizes(
sao, column_families_[rand_column_families[0]], &range, 1, &result);
}
Status StressTest::TestCheckpoint(ThreadState* thread,
const std::vector<int>& rand_column_families,
const std::vector<int64_t>& rand_keys) {
std::vector<std::unique_ptr<MutexLock>> locks;
if (ShouldAcquireMutexOnKey()) {
for (int rand_column_family : rand_column_families) {
// `rand_keys[0]` on each chosen CF will be verified.
locks.emplace_back(new MutexLock(
thread->shared->GetMutexForKey(rand_column_family, rand_keys[0])));
}
}
std::string checkpoint_dir =
FLAGS_db + "/.checkpoint" + std::to_string(thread->tid);
Options tmp_opts(options_);
tmp_opts.listeners.clear();
tmp_opts.env = db_stress_env;
DestroyDB(checkpoint_dir, tmp_opts);
if (db_stress_env->FileExists(checkpoint_dir).ok()) {
// If the directory might still exist, try to delete the files one by one.
// Likely a trash file is still there.
Status my_s = DestroyDir(db_stress_env, checkpoint_dir);
if (!my_s.ok()) {
fprintf(stderr, "Fail to destory directory before checkpoint: %s",
my_s.ToString().c_str());
}
}
Checkpoint* checkpoint = nullptr;
Status s = Checkpoint::Create(db_, &checkpoint);
if (s.ok()) {
s = checkpoint->CreateCheckpoint(checkpoint_dir);
if (!s.ok()) {
fprintf(stderr, "Fail to create checkpoint to %s\n",
checkpoint_dir.c_str());
std::vector<std::string> files;
Status my_s = db_stress_env->GetChildren(checkpoint_dir, &files);
if (my_s.ok()) {
for (const auto& f : files) {
fprintf(stderr, " %s\n", f.c_str());
}
} else {
fprintf(stderr, "Fail to get files under the directory to %s\n",
my_s.ToString().c_str());
}
}
}
delete checkpoint;
checkpoint = nullptr;
std::vector<ColumnFamilyHandle*> cf_handles;
DB* checkpoint_db = nullptr;
if (s.ok()) {
Options options(options_);
options.best_efforts_recovery = false;
options.listeners.clear();
// Avoid race condition in trash handling after delete checkpoint_db
options.sst_file_manager.reset();
std::vector<ColumnFamilyDescriptor> cf_descs;
// TODO(ajkr): `column_family_names_` is not safe to access here when
// `clear_column_family_one_in != 0`. But we can't easily switch to
// `ListColumnFamilies` to get names because it won't necessarily give
// the same order as `column_family_names_`.
assert(FLAGS_clear_column_family_one_in == 0);
if (FLAGS_clear_column_family_one_in == 0) {
for (const auto& name : column_family_names_) {
cf_descs.emplace_back(name, ColumnFamilyOptions(options));
}
s = DB::OpenForReadOnly(DBOptions(options), checkpoint_dir, cf_descs,
&cf_handles, &checkpoint_db);
}
}
if (checkpoint_db != nullptr) {
// Note the column families chosen by `rand_column_families` cannot be
// dropped while the locks for `rand_keys` are held. So we should not have
// to worry about accessing those column families throughout this function.
for (size_t i = 0; s.ok() && i < rand_column_families.size(); ++i) {
std::string key_str = Key(rand_keys[0]);
Slice key = key_str;
std::string ts_str;
Slice ts;
ReadOptions read_opts;
if (FLAGS_user_timestamp_size > 0) {
ts_str = GetNowNanos();
ts = ts_str;
read_opts.timestamp = &ts;
}
std::string value;
Status get_status = checkpoint_db->Get(
read_opts, cf_handles[rand_column_families[i]], key, &value);
bool exists =
thread->shared->Exists(rand_column_families[i], rand_keys[0]);
if (get_status.ok()) {
if (!exists && ShouldAcquireMutexOnKey()) {
std::ostringstream oss;
oss << "0x" << key.ToString(true) << " exists in checkpoint "
<< checkpoint_dir << " but not in original db";
s = Status::Corruption(oss.str());
}
} else if (get_status.IsNotFound()) {
if (exists && ShouldAcquireMutexOnKey()) {
std::ostringstream oss;
oss << "0x" << key.ToString(true)
<< " exists in original db but not in checkpoint "
<< checkpoint_dir;
s = Status::Corruption(oss.str());
}
} else {
s = get_status;
}
}
for (auto cfh : cf_handles) {
delete cfh;
}
cf_handles.clear();
delete checkpoint_db;
checkpoint_db = nullptr;
}
if (!s.ok()) {
fprintf(stderr, "A checkpoint operation failed with: %s\n",
s.ToString().c_str());
} else {
DestroyDB(checkpoint_dir, tmp_opts);
}
return s;
}
void StressTest::TestGetProperty(ThreadState* thread) const {
std::unordered_set<std::string> levelPropertyNames = {
DB::Properties::kAggregatedTablePropertiesAtLevel,
DB::Properties::kCompressionRatioAtLevelPrefix,
DB::Properties::kNumFilesAtLevelPrefix,
};
std::unordered_set<std::string> unknownPropertyNames = {
DB::Properties::kEstimateOldestKeyTime,
DB::Properties::kOptionsStatistics,
DB::Properties::
kLiveSstFilesSizeAtTemperature, // similar to levelPropertyNames, it
// requires a number suffix
};
unknownPropertyNames.insert(levelPropertyNames.begin(),
levelPropertyNames.end());
std::unordered_set<std::string> blobCachePropertyNames = {
DB::Properties::kBlobCacheCapacity,
DB::Properties::kBlobCacheUsage,
DB::Properties::kBlobCachePinnedUsage,
};
if (db_->GetOptions().blob_cache == nullptr) {
unknownPropertyNames.insert(blobCachePropertyNames.begin(),
blobCachePropertyNames.end());
}
std::string prop;
for (const auto& ppt_name_and_info : InternalStats::ppt_name_to_info) {
bool res = db_->GetProperty(ppt_name_and_info.first, &prop);
if (unknownPropertyNames.find(ppt_name_and_info.first) ==
unknownPropertyNames.end()) {
if (!res) {
fprintf(stderr, "Failed to get DB property: %s\n",
ppt_name_and_info.first.c_str());
thread->shared->SetVerificationFailure();
}
if (ppt_name_and_info.second.handle_int != nullptr) {
uint64_t prop_int;
if (!db_->GetIntProperty(ppt_name_and_info.first, &prop_int)) {
fprintf(stderr, "Failed to get Int property: %s\n",
ppt_name_and_info.first.c_str());
thread->shared->SetVerificationFailure();
}
}
if (ppt_name_and_info.second.handle_map != nullptr) {
std::map<std::string, std::string> prop_map;
if (!db_->GetMapProperty(ppt_name_and_info.first, &prop_map)) {
fprintf(stderr, "Failed to get Map property: %s\n",
ppt_name_and_info.first.c_str());
thread->shared->SetVerificationFailure();
}
}
}
}
ROCKSDB_NAMESPACE::ColumnFamilyMetaData cf_meta_data;
db_->GetColumnFamilyMetaData(&cf_meta_data);
int level_size = static_cast<int>(cf_meta_data.levels.size());
for (int level = 0; level < level_size; level++) {
for (const auto& ppt_name : levelPropertyNames) {
bool res = db_->GetProperty(ppt_name + std::to_string(level), &prop);
if (!res) {
fprintf(stderr, "Failed to get DB property: %s\n",
(ppt_name + std::to_string(level)).c_str());
thread->shared->SetVerificationFailure();
}
}
}
// Test for an invalid property name
if (thread->rand.OneIn(100)) {
if (db_->GetProperty("rocksdb.invalid_property_name", &prop)) {
fprintf(stderr, "Failed to return false for invalid property name\n");
thread->shared->SetVerificationFailure();
}
}
}
void StressTest::TestCompactFiles(ThreadState* thread,
ColumnFamilyHandle* column_family) {
ROCKSDB_NAMESPACE::ColumnFamilyMetaData cf_meta_data;
db_->GetColumnFamilyMetaData(column_family, &cf_meta_data);
if (cf_meta_data.levels.empty()) {
return;
}
// Randomly compact up to three consecutive files from a level
const int kMaxRetry = 3;
for (int attempt = 0; attempt < kMaxRetry; ++attempt) {
size_t random_level =
thread->rand.Uniform(static_cast<int>(cf_meta_data.levels.size()));
const auto& files = cf_meta_data.levels[random_level].files;
if (files.size() > 0) {
size_t random_file_index =
thread->rand.Uniform(static_cast<int>(files.size()));
if (files[random_file_index].being_compacted) {
// Retry as the selected file is currently being compacted
continue;
}
std::vector<std::string> input_files;
input_files.push_back(files[random_file_index].name);
if (random_file_index > 0 &&
!files[random_file_index - 1].being_compacted) {
input_files.push_back(files[random_file_index - 1].name);
}
if (random_file_index + 1 < files.size() &&
!files[random_file_index + 1].being_compacted) {
input_files.push_back(files[random_file_index + 1].name);
}
size_t output_level =
std::min(random_level + 1, cf_meta_data.levels.size() - 1);
auto s = db_->CompactFiles(CompactionOptions(), column_family,
input_files, static_cast<int>(output_level));
if (!s.ok()) {
fprintf(stdout, "Unable to perform CompactFiles(): %s\n",
s.ToString().c_str());
thread->stats.AddNumCompactFilesFailed(1);
} else {
thread->stats.AddNumCompactFilesSucceed(1);
}
break;
}
}
}
Status StressTest::TestFlush(const std::vector<int>& rand_column_families) {
FlushOptions flush_opts;
if (FLAGS_atomic_flush) {
return db_->Flush(flush_opts, column_families_);
}
std::vector<ColumnFamilyHandle*> cfhs;
std::for_each(rand_column_families.begin(), rand_column_families.end(),
[this, &cfhs](int k) { cfhs.push_back(column_families_[k]); });
return db_->Flush(flush_opts, cfhs);
}
Status StressTest::TestPauseBackground(ThreadState* thread) {
Status status = db_->PauseBackgroundWork();
if (!status.ok()) {
return status;
}
// To avoid stalling/deadlocking ourself in this thread, just
// sleep here during pause and let other threads do db operations.
// Sleep up to ~16 seconds (2**24 microseconds), but very skewed
// toward short pause. (1 chance in 25 of pausing >= 1s;
// 1 chance in 625 of pausing full 16s.)
int pwr2_micros =
std::min(thread->rand.Uniform(25), thread->rand.Uniform(25));
clock_->SleepForMicroseconds(1 << pwr2_micros);
return db_->ContinueBackgroundWork();
}
void StressTest::TestAcquireSnapshot(ThreadState* thread,
int rand_column_family,
const std::string& keystr, uint64_t i) {
Slice key = keystr;
ColumnFamilyHandle* column_family = column_families_[rand_column_family];
// This `ReadOptions` is for validation purposes. Ignore
// `FLAGS_rate_limit_user_ops` to avoid slowing any validation.
ReadOptions ropt;
auto db_impl = static_cast_with_check<DBImpl>(db_->GetRootDB());
const bool ww_snapshot = thread->rand.OneIn(10);
const Snapshot* snapshot =
ww_snapshot ? db_impl->GetSnapshotForWriteConflictBoundary()
: db_->GetSnapshot();
ropt.snapshot = snapshot;
// Ideally, we want snapshot taking and timestamp generation to be atomic
// here, so that the snapshot corresponds to the timestamp. However, it is
// not possible with current GetSnapshot() API.
std::string ts_str;
Slice ts;
if (FLAGS_user_timestamp_size > 0) {
ts_str = GetNowNanos();
ts = ts_str;
ropt.timestamp = &ts;
}
std::string value_at;
// When taking a snapshot, we also read a key from that snapshot. We
// will later read the same key before releasing the snapshot and
// verify that the results are the same.
auto status_at = db_->Get(ropt, column_family, key, &value_at);
std::vector<bool>* key_vec = nullptr;
if (FLAGS_compare_full_db_state_snapshot && (thread->tid == 0)) {
key_vec = new std::vector<bool>(FLAGS_max_key);
// When `prefix_extractor` is set, seeking to beginning and scanning
// across prefixes are only supported with `total_order_seek` set.
ropt.total_order_seek = true;
std::unique_ptr<Iterator> iterator(db_->NewIterator(ropt));
for (iterator->SeekToFirst(); iterator->Valid(); iterator->Next()) {
uint64_t key_val;
if (GetIntVal(iterator->key().ToString(), &key_val)) {
(*key_vec)[key_val] = true;
}
}
}
ThreadState::SnapshotState snap_state = {snapshot,
rand_column_family,
column_family->GetName(),
keystr,
status_at,
value_at,
key_vec,
ts_str};
uint64_t hold_for = FLAGS_snapshot_hold_ops;
if (FLAGS_long_running_snapshots) {
// Hold 10% of snapshots for 10x more
if (thread->rand.OneIn(10)) {
assert(hold_for < std::numeric_limits<uint64_t>::max() / 10);
hold_for *= 10;
// Hold 1% of snapshots for 100x more
if (thread->rand.OneIn(10)) {
assert(hold_for < std::numeric_limits<uint64_t>::max() / 10);
hold_for *= 10;
}
}
}
uint64_t release_at = std::min(FLAGS_ops_per_thread - 1, i + hold_for);
thread->snapshot_queue.emplace(release_at, snap_state);
}
Status StressTest::MaybeReleaseSnapshots(ThreadState* thread, uint64_t i) {
while (!thread->snapshot_queue.empty() &&
i >= thread->snapshot_queue.front().first) {
auto snap_state = thread->snapshot_queue.front().second;
assert(snap_state.snapshot);
// Note: this is unsafe as the cf might be dropped concurrently. But
// it is ok since unclean cf drop is cunnrently not supported by write
// prepared transactions.
Status s = AssertSame(db_, column_families_[snap_state.cf_at], snap_state);
db_->ReleaseSnapshot(snap_state.snapshot);
delete snap_state.key_vec;
thread->snapshot_queue.pop();
if (!s.ok()) {
return s;
}
}
return Status::OK();
}
void StressTest::TestCompactRange(ThreadState* thread, int64_t rand_key,
const Slice& start_key,
ColumnFamilyHandle* column_family) {
int64_t end_key_num;
if (std::numeric_limits<int64_t>::max() - rand_key <
FLAGS_compact_range_width) {
end_key_num = std::numeric_limits<int64_t>::max();
} else {
end_key_num = FLAGS_compact_range_width + rand_key;
}
std::string end_key_buf = Key(end_key_num);
Slice end_key(end_key_buf);
CompactRangeOptions cro;
cro.exclusive_manual_compaction = static_cast<bool>(thread->rand.Next() % 2);
cro.change_level = static_cast<bool>(thread->rand.Next() % 2);
std::vector<BottommostLevelCompaction> bottom_level_styles = {
BottommostLevelCompaction::kSkip,
BottommostLevelCompaction::kIfHaveCompactionFilter,
BottommostLevelCompaction::kForce,
BottommostLevelCompaction::kForceOptimized};
cro.bottommost_level_compaction =
bottom_level_styles[thread->rand.Next() %
static_cast<uint32_t>(bottom_level_styles.size())];
cro.allow_write_stall = static_cast<bool>(thread->rand.Next() % 2);
cro.max_subcompactions = static_cast<uint32_t>(thread->rand.Next() % 4);
std::vector<BlobGarbageCollectionPolicy> blob_gc_policies = {
BlobGarbageCollectionPolicy::kForce,
BlobGarbageCollectionPolicy::kDisable,
BlobGarbageCollectionPolicy::kUseDefault};
cro.blob_garbage_collection_policy =
blob_gc_policies[thread->rand.Next() %
static_cast<uint32_t>(blob_gc_policies.size())];
cro.blob_garbage_collection_age_cutoff =
static_cast<double>(thread->rand.Next() % 100) / 100.0;
const Snapshot* pre_snapshot = nullptr;
uint32_t pre_hash = 0;
if (thread->rand.OneIn(2)) {
// Do some validation by declaring a snapshot and compare the data before
// and after the compaction
pre_snapshot = db_->GetSnapshot();
pre_hash =
GetRangeHash(thread, pre_snapshot, column_family, start_key, end_key);
}
Status status = db_->CompactRange(cro, column_family, &start_key, &end_key);
if (!status.ok()) {
fprintf(stdout, "Unable to perform CompactRange(): %s\n",
status.ToString().c_str());
}
if (pre_snapshot != nullptr) {
uint32_t post_hash =
GetRangeHash(thread, pre_snapshot, column_family, start_key, end_key);
if (pre_hash != post_hash) {
fprintf(stderr,
"Data hash different before and after compact range "
"start_key %s end_key %s\n",
start_key.ToString(true).c_str(), end_key.ToString(true).c_str());
thread->stats.AddErrors(1);
// Fail fast to preserve the DB state.
thread->shared->SetVerificationFailure();
}
db_->ReleaseSnapshot(pre_snapshot);
}
}
uint32_t StressTest::GetRangeHash(ThreadState* thread, const Snapshot* snapshot,
ColumnFamilyHandle* column_family,
const Slice& start_key,
const Slice& end_key) {
// This `ReadOptions` is for validation purposes. Ignore
// `FLAGS_rate_limit_user_ops` to avoid slowing any validation.
ReadOptions ro;
ro.snapshot = snapshot;
ro.total_order_seek = true;
std::string ts_str;
Slice ts;
if (FLAGS_user_timestamp_size > 0) {
ts_str = GetNowNanos();
ts = ts_str;
ro.timestamp = &ts;
}
std::unique_ptr<Iterator> it(db_->NewIterator(ro, column_family));
constexpr char kCrcCalculatorSepearator = ';';
uint32_t crc = 0;
for (it->Seek(start_key);
it->Valid() && options_.comparator->Compare(it->key(), end_key) <= 0;
it->Next()) {
crc = crc32c::Extend(crc, it->key().data(), it->key().size());
crc = crc32c::Extend(crc, &kCrcCalculatorSepearator, sizeof(char));
crc = crc32c::Extend(crc, it->value().data(), it->value().size());
crc = crc32c::Extend(crc, &kCrcCalculatorSepearator, sizeof(char));
for (const auto& column : it->columns()) {
crc = crc32c::Extend(crc, column.name().data(), column.name().size());
crc = crc32c::Extend(crc, &kCrcCalculatorSepearator, sizeof(char));
crc = crc32c::Extend(crc, column.value().data(), column.value().size());
crc = crc32c::Extend(crc, &kCrcCalculatorSepearator, sizeof(char));
}
}
if (!it->status().ok()) {
fprintf(stderr, "Iterator non-OK when calculating range CRC: %s\n",
it->status().ToString().c_str());
thread->stats.AddErrors(1);
// Fail fast to preserve the DB state.
thread->shared->SetVerificationFailure();
}
return crc;
}
void StressTest::PrintEnv() const {
fprintf(stdout, "RocksDB version : %d.%d\n", kMajorVersion,
kMinorVersion);
fprintf(stdout, "Format version : %d\n", FLAGS_format_version);
fprintf(stdout, "TransactionDB : %s\n",
FLAGS_use_txn ? "true" : "false");
if (FLAGS_use_txn) {
fprintf(stdout, "Two write queues: : %s\n",
FLAGS_two_write_queues ? "true" : "false");
fprintf(stdout, "Write policy : %d\n",
static_cast<int>(FLAGS_txn_write_policy));
if (static_cast<uint64_t>(TxnDBWritePolicy::WRITE_PREPARED) ==
FLAGS_txn_write_policy ||
static_cast<uint64_t>(TxnDBWritePolicy::WRITE_UNPREPARED) ==
FLAGS_txn_write_policy) {
fprintf(stdout, "Snapshot cache bits : %d\n",
static_cast<int>(FLAGS_wp_snapshot_cache_bits));
fprintf(stdout, "Commit cache bits : %d\n",
static_cast<int>(FLAGS_wp_commit_cache_bits));
}
fprintf(stdout, "last cwb for recovery : %s\n",
FLAGS_use_only_the_last_commit_time_batch_for_recovery ? "true"
: "false");
}
fprintf(stdout, "Stacked BlobDB : %s\n",
FLAGS_use_blob_db ? "true" : "false");
fprintf(stdout, "Read only mode : %s\n",
FLAGS_read_only ? "true" : "false");
fprintf(stdout, "Atomic flush : %s\n",
FLAGS_atomic_flush ? "true" : "false");
fprintf(stdout, "Manual WAL flush : %s\n",
FLAGS_manual_wal_flush_one_in > 0 ? "true" : "false");
fprintf(stdout, "Column families : %d\n", FLAGS_column_families);
if (!FLAGS_test_batches_snapshots) {
fprintf(stdout, "Clear CFs one in : %d\n",
FLAGS_clear_column_family_one_in);
}
fprintf(stdout, "Number of threads : %d\n", FLAGS_threads);
fprintf(stdout, "Ops per thread : %lu\n",
(unsigned long)FLAGS_ops_per_thread);
std::string ttl_state("unused");
if (FLAGS_ttl > 0) {
ttl_state = std::to_string(FLAGS_ttl);
}
fprintf(stdout, "Time to live(sec) : %s\n", ttl_state.c_str());
fprintf(stdout, "Read percentage : %d%%\n", FLAGS_readpercent);
fprintf(stdout, "Prefix percentage : %d%%\n", FLAGS_prefixpercent);
fprintf(stdout, "Write percentage : %d%%\n", FLAGS_writepercent);
fprintf(stdout, "Delete percentage : %d%%\n", FLAGS_delpercent);
fprintf(stdout, "Delete range percentage : %d%%\n", FLAGS_delrangepercent);
fprintf(stdout, "No overwrite percentage : %d%%\n",
FLAGS_nooverwritepercent);
fprintf(stdout, "Iterate percentage : %d%%\n", FLAGS_iterpercent);
fprintf(stdout, "Custom ops percentage : %d%%\n", FLAGS_customopspercent);
fprintf(stdout, "DB-write-buffer-size : %" PRIu64 "\n",
FLAGS_db_write_buffer_size);
fprintf(stdout, "Write-buffer-size : %d\n", FLAGS_write_buffer_size);
fprintf(stdout, "Iterations : %lu\n",
(unsigned long)FLAGS_num_iterations);
fprintf(stdout, "Max key : %lu\n",
(unsigned long)FLAGS_max_key);
fprintf(stdout, "Ratio #ops/#keys : %f\n",
(1.0 * FLAGS_ops_per_thread * FLAGS_threads) / FLAGS_max_key);
fprintf(stdout, "Num times DB reopens : %d\n", FLAGS_reopen);
fprintf(stdout, "Batches/snapshots : %d\n",
FLAGS_test_batches_snapshots);
fprintf(stdout, "Do update in place : %d\n", FLAGS_in_place_update);
fprintf(stdout, "Num keys per lock : %d\n",
1 << FLAGS_log2_keys_per_lock);
std::string compression = CompressionTypeToString(compression_type_e);
fprintf(stdout, "Compression : %s\n", compression.c_str());
std::string bottommost_compression =
CompressionTypeToString(bottommost_compression_type_e);
fprintf(stdout, "Bottommost Compression : %s\n",
bottommost_compression.c_str());
std::string checksum = ChecksumTypeToString(checksum_type_e);
fprintf(stdout, "Checksum type : %s\n", checksum.c_str());
fprintf(stdout, "File checksum impl : %s\n",
FLAGS_file_checksum_impl.c_str());
fprintf(stdout, "Bloom bits / key : %s\n",
FormatDoubleParam(FLAGS_bloom_bits).c_str());
fprintf(stdout, "Max subcompactions : %" PRIu64 "\n",
FLAGS_subcompactions);
fprintf(stdout, "Use MultiGet : %s\n",
FLAGS_use_multiget ? "true" : "false");
const char* memtablerep = "";
switch (FLAGS_rep_factory) {
case kSkipList:
memtablerep = "skip_list";
break;
case kHashSkipList:
memtablerep = "prefix_hash";
break;
case kVectorRep:
memtablerep = "vector";
break;
}
fprintf(stdout, "Memtablerep : %s\n", memtablerep);
#ifndef NDEBUG
KillPoint* kp = KillPoint::GetInstance();
fprintf(stdout, "Test kill odd : %d\n", kp->rocksdb_kill_odds);
if (!kp->rocksdb_kill_exclude_prefixes.empty()) {
fprintf(stdout, "Skipping kill points prefixes:\n");
for (auto& p : kp->rocksdb_kill_exclude_prefixes) {
fprintf(stdout, " %s\n", p.c_str());
}
}
#endif
fprintf(stdout, "Periodic Compaction Secs : %" PRIu64 "\n",
FLAGS_periodic_compaction_seconds);
fprintf(stdout, "Compaction TTL : %" PRIu64 "\n",
FLAGS_compaction_ttl);
const char* compaction_pri = "";
switch (FLAGS_compaction_pri) {
case kByCompensatedSize:
compaction_pri = "kByCompensatedSize";
break;
case kOldestLargestSeqFirst:
compaction_pri = "kOldestLargestSeqFirst";
break;
case kOldestSmallestSeqFirst:
compaction_pri = "kOldestSmallestSeqFirst";
break;
case kMinOverlappingRatio:
compaction_pri = "kMinOverlappingRatio";
break;
case kRoundRobin:
compaction_pri = "kRoundRobin";
break;
}
fprintf(stdout, "Compaction Pri : %s\n", compaction_pri);
fprintf(stdout, "Background Purge : %d\n",
static_cast<int>(FLAGS_avoid_unnecessary_blocking_io));
fprintf(stdout, "Write DB ID to manifest : %d\n",
static_cast<int>(FLAGS_write_dbid_to_manifest));
fprintf(stdout, "Max Write Batch Group Size: %" PRIu64 "\n",
FLAGS_max_write_batch_group_size_bytes);
fprintf(stdout, "Use dynamic level : %d\n",
static_cast<int>(FLAGS_level_compaction_dynamic_level_bytes));
fprintf(stdout, "Read fault one in : %d\n", FLAGS_read_fault_one_in);
fprintf(stdout, "Write fault one in : %d\n", FLAGS_write_fault_one_in);
fprintf(stdout, "Open metadata write fault one in:\n");
fprintf(stdout, " %d\n",
FLAGS_open_metadata_write_fault_one_in);
fprintf(stdout, "Sync fault injection : %d\n",
FLAGS_sync_fault_injection);
fprintf(stdout, "Best efforts recovery : %d\n",
static_cast<int>(FLAGS_best_efforts_recovery));
fprintf(stdout, "Fail if OPTIONS file error: %d\n",
static_cast<int>(FLAGS_fail_if_options_file_error));
fprintf(stdout, "User timestamp size bytes : %d\n",
static_cast<int>(FLAGS_user_timestamp_size));
fprintf(stdout, "WAL compression : %s\n",
FLAGS_wal_compression.c_str());
fprintf(stdout, "Try verify sst unique id : %d\n",
static_cast<int>(FLAGS_verify_sst_unique_id_in_manifest));
fprintf(stdout, "------------------------------------------------\n");
}
void StressTest::Open(SharedState* shared) {
assert(db_ == nullptr);
assert(txn_db_ == nullptr);
if (!InitializeOptionsFromFile(options_)) {
InitializeOptionsFromFlags(cache_, filter_policy_, options_);
}
InitializeOptionsGeneral(cache_, filter_policy_, options_);
if (FLAGS_prefix_size == 0 && FLAGS_rep_factory == kHashSkipList) {
fprintf(stderr,
"prefeix_size cannot be zero if memtablerep == prefix_hash\n");
exit(1);
}
if (FLAGS_prefix_size != 0 && FLAGS_rep_factory != kHashSkipList) {
fprintf(stderr,
"WARNING: prefix_size is non-zero but "
"memtablerep != prefix_hash\n");
}
if ((options_.enable_blob_files || options_.enable_blob_garbage_collection ||
FLAGS_allow_setting_blob_options_dynamically) &&
FLAGS_best_efforts_recovery) {
fprintf(stderr,
"Integrated BlobDB is currently incompatible with best-effort "
"recovery\n");
exit(1);
}
fprintf(stdout,
"Integrated BlobDB: blob files enabled %d, min blob size %" PRIu64
", blob file size %" PRIu64
", blob compression type %s, blob GC enabled %d, cutoff %f, force "
"threshold %f, blob compaction readahead size %" PRIu64
", blob file starting level %d\n",
options_.enable_blob_files, options_.min_blob_size,
options_.blob_file_size,
CompressionTypeToString(options_.blob_compression_type).c_str(),
options_.enable_blob_garbage_collection,
options_.blob_garbage_collection_age_cutoff,
options_.blob_garbage_collection_force_threshold,
options_.blob_compaction_readahead_size,
options_.blob_file_starting_level);
if (FLAGS_use_blob_cache) {
fprintf(stdout,
"Integrated BlobDB: blob cache enabled"
", block and blob caches shared: %d",
FLAGS_use_shared_block_and_blob_cache);
if (!FLAGS_use_shared_block_and_blob_cache) {
fprintf(stdout,
", blob cache size %" PRIu64 ", blob cache num shard bits: %d",
FLAGS_blob_cache_size, FLAGS_blob_cache_numshardbits);
}
fprintf(stdout, ", blob cache prepopulated: %d\n",
FLAGS_prepopulate_blob_cache);
} else {
fprintf(stdout, "Integrated BlobDB: blob cache disabled\n");
}
fprintf(stdout, "DB path: [%s]\n", FLAGS_db.c_str());
Status s;
if (FLAGS_ttl == -1) {
std::vector<std::string> existing_column_families;
s = DB::ListColumnFamilies(DBOptions(options_), FLAGS_db,
&existing_column_families); // ignore errors
if (!s.ok()) {
// DB doesn't exist
assert(existing_column_families.empty());
assert(column_family_names_.empty());
column_family_names_.push_back(kDefaultColumnFamilyName);
} else if (column_family_names_.empty()) {
// this is the first call to the function Open()
column_family_names_ = existing_column_families;
} else {
// this is a reopen. just assert that existing column_family_names are
// equivalent to what we remember
auto sorted_cfn = column_family_names_;
std::sort(sorted_cfn.begin(), sorted_cfn.end());
std::sort(existing_column_families.begin(),
existing_column_families.end());
if (sorted_cfn != existing_column_families) {
fprintf(stderr, "Expected column families differ from the existing:\n");
fprintf(stderr, "Expected: {");
for (auto cf : sorted_cfn) {
fprintf(stderr, "%s ", cf.c_str());
}
fprintf(stderr, "}\n");
fprintf(stderr, "Existing: {");
for (auto cf : existing_column_families) {
fprintf(stderr, "%s ", cf.c_str());
}
fprintf(stderr, "}\n");
}
assert(sorted_cfn == existing_column_families);
}
std::vector<ColumnFamilyDescriptor> cf_descriptors;
for (auto name : column_family_names_) {
if (name != kDefaultColumnFamilyName) {
new_column_family_name_ =
std::max(new_column_family_name_.load(), std::stoi(name) + 1);
}
cf_descriptors.emplace_back(name, ColumnFamilyOptions(options_));
}
while (cf_descriptors.size() < (size_t)FLAGS_column_families) {
std::string name = std::to_string(new_column_family_name_.load());
new_column_family_name_++;
cf_descriptors.emplace_back(name, ColumnFamilyOptions(options_));
column_family_names_.push_back(name);
}
options_.listeners.clear();
options_.listeners.emplace_back(new DbStressListener(
FLAGS_db, options_.db_paths, cf_descriptors, db_stress_listener_env));
RegisterAdditionalListeners();
if (!FLAGS_use_txn) {
// Determine whether we need to ingest file metadata write failures
// during DB reopen. If it does, enable it.
// Only ingest metadata error if it is reopening, as initial open
// failure doesn't need to be handled.
// TODO cover transaction DB is not covered in this fault test too.
bool ingest_meta_error = false;
bool ingest_write_error = false;
bool ingest_read_error = false;
if ((FLAGS_open_metadata_write_fault_one_in ||
FLAGS_open_write_fault_one_in || FLAGS_open_read_fault_one_in) &&
fault_fs_guard
->FileExists(FLAGS_db + "/CURRENT", IOOptions(), nullptr)
.ok()) {
if (!FLAGS_sync) {
// When DB Stress is not sync mode, we expect all WAL writes to
// WAL is durable. Buffering unsynced writes will cause false
// positive in crash tests. Before we figure out a way to
// solve it, skip WAL from failure injection.
fault_fs_guard->SetSkipDirectWritableTypes({kWalFile});
}
ingest_meta_error = FLAGS_open_metadata_write_fault_one_in;
ingest_write_error = FLAGS_open_write_fault_one_in;
ingest_read_error = FLAGS_open_read_fault_one_in;
if (ingest_meta_error) {
fault_fs_guard->EnableMetadataWriteErrorInjection();
fault_fs_guard->SetRandomMetadataWriteError(
FLAGS_open_metadata_write_fault_one_in);
}
if (ingest_write_error) {
fault_fs_guard->SetFilesystemDirectWritable(false);
fault_fs_guard->EnableWriteErrorInjection();
fault_fs_guard->SetRandomWriteError(
static_cast<uint32_t>(FLAGS_seed), FLAGS_open_write_fault_one_in,
IOStatus::IOError("Injected Open Error"),
/*inject_for_all_file_types=*/true, /*types=*/{});
}
if (ingest_read_error) {
fault_fs_guard->SetRandomReadError(FLAGS_open_read_fault_one_in);
}
}
while (true) {
// StackableDB-based BlobDB
if (FLAGS_use_blob_db) {
blob_db::BlobDBOptions blob_db_options;
blob_db_options.min_blob_size = FLAGS_blob_db_min_blob_size;
blob_db_options.bytes_per_sync = FLAGS_blob_db_bytes_per_sync;
blob_db_options.blob_file_size = FLAGS_blob_db_file_size;
blob_db_options.enable_garbage_collection = FLAGS_blob_db_enable_gc;
blob_db_options.garbage_collection_cutoff = FLAGS_blob_db_gc_cutoff;
blob_db::BlobDB* blob_db = nullptr;
s = blob_db::BlobDB::Open(options_, blob_db_options, FLAGS_db,
cf_descriptors, &column_families_,
&blob_db);
if (s.ok()) {
db_ = blob_db;
}
} else
{
if (db_preload_finished_.load() && FLAGS_read_only) {
s = DB::OpenForReadOnly(DBOptions(options_), FLAGS_db,
cf_descriptors, &column_families_, &db_);
} else {
s = DB::Open(DBOptions(options_), FLAGS_db, cf_descriptors,
&column_families_, &db_);
}
}
if (ingest_meta_error || ingest_write_error || ingest_read_error) {
fault_fs_guard->SetFilesystemDirectWritable(true);
fault_fs_guard->DisableMetadataWriteErrorInjection();
fault_fs_guard->DisableWriteErrorInjection();
fault_fs_guard->SetSkipDirectWritableTypes({});
fault_fs_guard->SetRandomReadError(0);
if (s.ok()) {
// Ingested errors might happen in background compactions. We
// wait for all compactions to finish to make sure DB is in
// clean state before executing queries.
s = static_cast_with_check<DBImpl>(db_->GetRootDB())
->WaitForCompact(true /* wait_unscheduled */);
if (!s.ok()) {
for (auto cf : column_families_) {
delete cf;
}
column_families_.clear();
delete db_;
db_ = nullptr;
}
}
if (!s.ok()) {
// After failure to opening a DB due to IO error, retry should
// successfully open the DB with correct data if no IO error shows
// up.
ingest_meta_error = false;
ingest_write_error = false;
ingest_read_error = false;
Random rand(static_cast<uint32_t>(FLAGS_seed));
if (rand.OneIn(2)) {
fault_fs_guard->DeleteFilesCreatedAfterLastDirSync(IOOptions(),
nullptr);
}
if (rand.OneIn(3)) {
fault_fs_guard->DropUnsyncedFileData();
} else if (rand.OneIn(2)) {
fault_fs_guard->DropRandomUnsyncedFileData(&rand);
}
continue;
}
}
break;
}
} else {
TransactionDBOptions txn_db_options;
assert(FLAGS_txn_write_policy <= TxnDBWritePolicy::WRITE_UNPREPARED);
txn_db_options.write_policy =
static_cast<TxnDBWritePolicy>(FLAGS_txn_write_policy);
if (FLAGS_unordered_write) {
assert(txn_db_options.write_policy == TxnDBWritePolicy::WRITE_PREPARED);
options_.unordered_write = true;
options_.two_write_queues = true;
txn_db_options.skip_concurrency_control = true;
} else {
options_.two_write_queues = FLAGS_two_write_queues;
}
txn_db_options.wp_snapshot_cache_bits =
static_cast<size_t>(FLAGS_wp_snapshot_cache_bits);
txn_db_options.wp_commit_cache_bits =
static_cast<size_t>(FLAGS_wp_commit_cache_bits);
PrepareTxnDbOptions(shared, txn_db_options);
s = TransactionDB::Open(options_, txn_db_options, FLAGS_db,
cf_descriptors, &column_families_, &txn_db_);
if (!s.ok()) {
fprintf(stderr, "Error in opening the TransactionDB [%s]\n",
s.ToString().c_str());
fflush(stderr);
}
assert(s.ok());
// Do not swap the order of the following.
{
db_ = txn_db_;
db_aptr_.store(txn_db_, std::memory_order_release);
}
}
if (!s.ok()) {
fprintf(stderr, "Error in opening the DB [%s]\n", s.ToString().c_str());
fflush(stderr);
}
assert(s.ok());
assert(column_families_.size() ==
static_cast<size_t>(FLAGS_column_families));
// Secondary instance does not support write-prepared/write-unprepared
// transactions, thus just disable secondary instance if we use
// transaction.
if (s.ok() && FLAGS_test_secondary && !FLAGS_use_txn) {
Options tmp_opts;
// TODO(yanqin) support max_open_files != -1 for secondary instance.
tmp_opts.max_open_files = -1;
tmp_opts.env = db_stress_env;
const std::string& secondary_path = FLAGS_secondaries_base;
s = DB::OpenAsSecondary(tmp_opts, FLAGS_db, secondary_path,
cf_descriptors, &cmp_cfhs_, &cmp_db_);
assert(s.ok());
assert(cmp_cfhs_.size() == static_cast<size_t>(FLAGS_column_families));
}
} else {
DBWithTTL* db_with_ttl;
s = DBWithTTL::Open(options_, FLAGS_db, &db_with_ttl, FLAGS_ttl);
db_ = db_with_ttl;
}
if (FLAGS_preserve_unverified_changes) {
// Up until now, no live file should have become obsolete due to these
// options. After `DisableFileDeletions()` we can reenable auto compactions
// since, even if live files become obsolete, they won't be deleted.
assert(options_.avoid_flush_during_recovery);
assert(options_.disable_auto_compactions);
if (s.ok()) {
s = db_->DisableFileDeletions();
}
if (s.ok()) {
s = db_->EnableAutoCompaction(column_families_);
}
}
if (!s.ok()) {
fprintf(stderr, "open error: %s\n", s.ToString().c_str());
exit(1);
}
}
void StressTest::Reopen(ThreadState* thread) {
// BG jobs in WritePrepared must be canceled first because i) they can access
// the db via a callbac ii) they hold on to a snapshot and the upcoming
// ::Close would complain about it.
const bool write_prepared = FLAGS_use_txn && FLAGS_txn_write_policy != 0;
bool bg_canceled __attribute__((unused)) = false;
if (write_prepared || thread->rand.OneIn(2)) {
const bool wait =
write_prepared || static_cast<bool>(thread->rand.OneIn(2));
CancelAllBackgroundWork(db_, wait);
bg_canceled = wait;
}
assert(!write_prepared || bg_canceled);
for (auto cf : column_families_) {
delete cf;
}
column_families_.clear();
if (thread->rand.OneIn(2)) {
Status s = db_->Close();
if (!s.ok()) {
fprintf(stderr, "Non-ok close status: %s\n", s.ToString().c_str());
fflush(stderr);
}
assert(s.ok());
}
assert(txn_db_ == nullptr || db_ == txn_db_);
delete db_;
db_ = nullptr;
txn_db_ = nullptr;
num_times_reopened_++;
auto now = clock_->NowMicros();
fprintf(stdout, "%s Reopening database for the %dth time\n",
clock_->TimeToString(now / 1000000).c_str(), num_times_reopened_);
Open(thread->shared);
if ((FLAGS_sync_fault_injection || FLAGS_disable_wal ||
FLAGS_manual_wal_flush_one_in > 0) &&
IsStateTracked()) {
Status s = thread->shared->SaveAtAndAfter(db_);
if (!s.ok()) {
fprintf(stderr, "Error enabling history tracing: %s\n",
s.ToString().c_str());
exit(1);
}
}
}
bool StressTest::MaybeUseOlderTimestampForPointLookup(ThreadState* thread,
std::string& ts_str,
Slice& ts_slice,
ReadOptions& read_opts) {
if (FLAGS_user_timestamp_size == 0) {
return false;
}
assert(thread);
if (!thread->rand.OneInOpt(3)) {
return false;
}
const SharedState* const shared = thread->shared;
assert(shared);
const uint64_t start_ts = shared->GetStartTimestamp();
uint64_t now = db_stress_env->NowNanos();
assert(now > start_ts);
uint64_t time_diff = now - start_ts;
uint64_t ts = start_ts + (thread->rand.Next64() % time_diff);
ts_str.clear();
PutFixed64(&ts_str, ts);
ts_slice = ts_str;
read_opts.timestamp = &ts_slice;
return true;
}
void StressTest::MaybeUseOlderTimestampForRangeScan(ThreadState* thread,
std::string& ts_str,
Slice& ts_slice,
ReadOptions& read_opts) {
if (FLAGS_user_timestamp_size == 0) {
return;
}
assert(thread);
if (!thread->rand.OneInOpt(3)) {
return;
}
const Slice* const saved_ts = read_opts.timestamp;
assert(saved_ts != nullptr);
const SharedState* const shared = thread->shared;
assert(shared);
const uint64_t start_ts = shared->GetStartTimestamp();
uint64_t now = db_stress_env->NowNanos();
assert(now > start_ts);
uint64_t time_diff = now - start_ts;
uint64_t ts = start_ts + (thread->rand.Next64() % time_diff);
ts_str.clear();
PutFixed64(&ts_str, ts);
ts_slice = ts_str;
read_opts.timestamp = &ts_slice;
// TODO (yanqin): support Merge with iter_start_ts
// TODO (yuzhangyu): support BlobDB with iter_start_ts
if (!thread->rand.OneInOpt(3) || FLAGS_use_merge || FLAGS_use_full_merge_v1 ||
FLAGS_enable_blob_files) {
return;
}
ts_str.clear();
PutFixed64(&ts_str, start_ts);
ts_slice = ts_str;
read_opts.iter_start_ts = &ts_slice;
read_opts.timestamp = saved_ts;
}
void CheckAndSetOptionsForUserTimestamp(Options& options) {
assert(FLAGS_user_timestamp_size > 0);
const Comparator* const cmp = test::BytewiseComparatorWithU64TsWrapper();
assert(cmp);
if (FLAGS_user_timestamp_size != cmp->timestamp_size()) {
fprintf(stderr,
"Only -user_timestamp_size=%d is supported in stress test.\n",
static_cast<int>(cmp->timestamp_size()));
exit(1);
}
if (FLAGS_use_txn) {
fprintf(stderr, "TransactionDB does not support timestamp yet.\n");
exit(1);
}
if (FLAGS_test_cf_consistency || FLAGS_test_batches_snapshots) {
fprintf(stderr,
"Due to per-key ts-seq ordering constraint, only the (default) "
"non-batched test is supported with timestamp.\n");
exit(1);
}
if (FLAGS_ingest_external_file_one_in > 0) {
fprintf(stderr, "Bulk loading may not support timestamp yet.\n");
exit(1);
}
options.comparator = cmp;
}
bool InitializeOptionsFromFile(Options& options) {
DBOptions db_options;
ConfigOptions config_options;
config_options.ignore_unknown_options = false;
config_options.input_strings_escaped = true;
config_options.env = db_stress_env;
std::vector<ColumnFamilyDescriptor> cf_descriptors;
if (!FLAGS_options_file.empty()) {
Status s = LoadOptionsFromFile(config_options, FLAGS_options_file,
&db_options, &cf_descriptors);
if (!s.ok()) {
fprintf(stderr, "Unable to load options file %s --- %s\n",
FLAGS_options_file.c_str(), s.ToString().c_str());
exit(1);
}
db_options.env = new CompositeEnvWrapper(db_stress_env);
options = Options(db_options, cf_descriptors[0].options);
return true;
}
return false;
}
void InitializeOptionsFromFlags(
const std::shared_ptr<Cache>& cache,
const std::shared_ptr<const FilterPolicy>& filter_policy,
Options& options) {
BlockBasedTableOptions block_based_options;
block_based_options.block_cache = cache;
block_based_options.cache_index_and_filter_blocks =
FLAGS_cache_index_and_filter_blocks;
block_based_options.metadata_cache_options.top_level_index_pinning =
static_cast<PinningTier>(FLAGS_top_level_index_pinning);
block_based_options.metadata_cache_options.partition_pinning =
static_cast<PinningTier>(FLAGS_partition_pinning);
block_based_options.metadata_cache_options.unpartitioned_pinning =
static_cast<PinningTier>(FLAGS_unpartitioned_pinning);
block_based_options.checksum = checksum_type_e;
block_based_options.block_size = FLAGS_block_size;
block_based_options.cache_usage_options.options_overrides.insert(
{CacheEntryRole::kCompressionDictionaryBuildingBuffer,
{/*.charged = */ FLAGS_charge_compression_dictionary_building_buffer
? CacheEntryRoleOptions::Decision::kEnabled
: CacheEntryRoleOptions::Decision::kDisabled}});
block_based_options.cache_usage_options.options_overrides.insert(
{CacheEntryRole::kFilterConstruction,
{/*.charged = */ FLAGS_charge_filter_construction
? CacheEntryRoleOptions::Decision::kEnabled
: CacheEntryRoleOptions::Decision::kDisabled}});
block_based_options.cache_usage_options.options_overrides.insert(
{CacheEntryRole::kBlockBasedTableReader,
{/*.charged = */ FLAGS_charge_table_reader
? CacheEntryRoleOptions::Decision::kEnabled
: CacheEntryRoleOptions::Decision::kDisabled}});
block_based_options.cache_usage_options.options_overrides.insert(
{CacheEntryRole::kFileMetadata,
{/*.charged = */ FLAGS_charge_file_metadata
? CacheEntryRoleOptions::Decision::kEnabled
: CacheEntryRoleOptions::Decision::kDisabled}});
block_based_options.cache_usage_options.options_overrides.insert(
{CacheEntryRole::kBlobCache,
{/*.charged = */ FLAGS_charge_blob_cache
? CacheEntryRoleOptions::Decision::kEnabled
: CacheEntryRoleOptions::Decision::kDisabled}});
block_based_options.format_version =
static_cast<uint32_t>(FLAGS_format_version);
block_based_options.index_block_restart_interval =
static_cast<int32_t>(FLAGS_index_block_restart_interval);
block_based_options.filter_policy = filter_policy;
block_based_options.partition_filters = FLAGS_partition_filters;
block_based_options.optimize_filters_for_memory =
FLAGS_optimize_filters_for_memory;
block_based_options.detect_filter_construct_corruption =
FLAGS_detect_filter_construct_corruption;
block_based_options.index_type =
static_cast<BlockBasedTableOptions::IndexType>(FLAGS_index_type);
block_based_options.data_block_index_type =
static_cast<BlockBasedTableOptions::DataBlockIndexType>(
FLAGS_data_block_index_type);
block_based_options.prepopulate_block_cache =
static_cast<BlockBasedTableOptions::PrepopulateBlockCache>(
FLAGS_prepopulate_block_cache);
block_based_options.initial_auto_readahead_size =
FLAGS_initial_auto_readahead_size;
block_based_options.max_auto_readahead_size = FLAGS_max_auto_readahead_size;
block_based_options.num_file_reads_for_auto_readahead =
FLAGS_num_file_reads_for_auto_readahead;
options.table_factory.reset(NewBlockBasedTableFactory(block_based_options));
options.db_write_buffer_size = FLAGS_db_write_buffer_size;
options.write_buffer_size = FLAGS_write_buffer_size;
options.max_write_buffer_number = FLAGS_max_write_buffer_number;
options.min_write_buffer_number_to_merge =
FLAGS_min_write_buffer_number_to_merge;
options.max_write_buffer_number_to_maintain =
FLAGS_max_write_buffer_number_to_maintain;
options.max_write_buffer_size_to_maintain =
FLAGS_max_write_buffer_size_to_maintain;
options.memtable_prefix_bloom_size_ratio =
FLAGS_memtable_prefix_bloom_size_ratio;
options.memtable_whole_key_filtering = FLAGS_memtable_whole_key_filtering;
options.disable_auto_compactions = FLAGS_disable_auto_compactions;
options.max_background_compactions = FLAGS_max_background_compactions;
options.max_background_flushes = FLAGS_max_background_flushes;
options.compaction_style =
static_cast<ROCKSDB_NAMESPACE::CompactionStyle>(FLAGS_compaction_style);
if (options.compaction_style ==
ROCKSDB_NAMESPACE::CompactionStyle::kCompactionStyleFIFO) {
options.compaction_options_fifo.allow_compaction =
FLAGS_fifo_allow_compaction;
}
options.compaction_pri =
static_cast<ROCKSDB_NAMESPACE::CompactionPri>(FLAGS_compaction_pri);
options.num_levels = FLAGS_num_levels;
if (FLAGS_prefix_size >= 0) {
options.prefix_extractor.reset(NewFixedPrefixTransform(FLAGS_prefix_size));
}
options.max_open_files = FLAGS_open_files;
options.statistics = dbstats;
options.env = db_stress_env;
options.use_fsync = FLAGS_use_fsync;
options.compaction_readahead_size = FLAGS_compaction_readahead_size;
options.allow_mmap_reads = FLAGS_mmap_read;
options.allow_mmap_writes = FLAGS_mmap_write;
options.use_direct_reads = FLAGS_use_direct_reads;
options.use_direct_io_for_flush_and_compaction =
FLAGS_use_direct_io_for_flush_and_compaction;
options.recycle_log_file_num =
static_cast<size_t>(FLAGS_recycle_log_file_num);
options.target_file_size_base = FLAGS_target_file_size_base;
options.target_file_size_multiplier = FLAGS_target_file_size_multiplier;
options.max_bytes_for_level_base = FLAGS_max_bytes_for_level_base;
options.max_bytes_for_level_multiplier = FLAGS_max_bytes_for_level_multiplier;
options.level0_stop_writes_trigger = FLAGS_level0_stop_writes_trigger;
options.level0_slowdown_writes_trigger = FLAGS_level0_slowdown_writes_trigger;
options.level0_file_num_compaction_trigger =
FLAGS_level0_file_num_compaction_trigger;
options.compression = compression_type_e;
options.bottommost_compression = bottommost_compression_type_e;
options.compression_opts.max_dict_bytes = FLAGS_compression_max_dict_bytes;
options.compression_opts.zstd_max_train_bytes =
FLAGS_compression_zstd_max_train_bytes;
options.compression_opts.parallel_threads =
FLAGS_compression_parallel_threads;
options.compression_opts.max_dict_buffer_bytes =
FLAGS_compression_max_dict_buffer_bytes;
if (ZSTD_FinalizeDictionarySupported()) {
options.compression_opts.use_zstd_dict_trainer =
FLAGS_compression_use_zstd_dict_trainer;
} else if (!FLAGS_compression_use_zstd_dict_trainer) {
fprintf(
stderr,
"WARNING: use_zstd_dict_trainer is false but zstd finalizeDictionary "
"cannot be used because ZSTD 1.4.5+ is not linked with the binary."
" zstd dictionary trainer will be used.\n");
}
options.max_manifest_file_size = FLAGS_max_manifest_file_size;
options.inplace_update_support = FLAGS_in_place_update;
options.max_subcompactions = static_cast<uint32_t>(FLAGS_subcompactions);
options.allow_concurrent_memtable_write =
FLAGS_allow_concurrent_memtable_write;
options.experimental_mempurge_threshold =
FLAGS_experimental_mempurge_threshold;
options.periodic_compaction_seconds = FLAGS_periodic_compaction_seconds;
options.stats_dump_period_sec =
static_cast<unsigned int>(FLAGS_stats_dump_period_sec);
options.ttl = FLAGS_compaction_ttl;
options.enable_pipelined_write = FLAGS_enable_pipelined_write;
options.enable_write_thread_adaptive_yield =
FLAGS_enable_write_thread_adaptive_yield;
options.compaction_options_universal.size_ratio = FLAGS_universal_size_ratio;
options.compaction_options_universal.min_merge_width =
FLAGS_universal_min_merge_width;
options.compaction_options_universal.max_merge_width =
FLAGS_universal_max_merge_width;
options.compaction_options_universal.max_size_amplification_percent =
FLAGS_universal_max_size_amplification_percent;
options.atomic_flush = FLAGS_atomic_flush;
options.manual_wal_flush = FLAGS_manual_wal_flush_one_in > 0 ? true : false;
options.avoid_unnecessary_blocking_io = FLAGS_avoid_unnecessary_blocking_io;
options.write_dbid_to_manifest = FLAGS_write_dbid_to_manifest;
options.avoid_flush_during_recovery = FLAGS_avoid_flush_during_recovery;
options.max_write_batch_group_size_bytes =
FLAGS_max_write_batch_group_size_bytes;
options.level_compaction_dynamic_level_bytes =
FLAGS_level_compaction_dynamic_level_bytes;
options.track_and_verify_wals_in_manifest = true;
options.verify_sst_unique_id_in_manifest =
FLAGS_verify_sst_unique_id_in_manifest;
options.memtable_protection_bytes_per_key =
FLAGS_memtable_protection_bytes_per_key;
// Integrated BlobDB
options.enable_blob_files = FLAGS_enable_blob_files;
options.min_blob_size = FLAGS_min_blob_size;
options.blob_file_size = FLAGS_blob_file_size;
options.blob_compression_type =
StringToCompressionType(FLAGS_blob_compression_type.c_str());
options.enable_blob_garbage_collection = FLAGS_enable_blob_garbage_collection;
options.blob_garbage_collection_age_cutoff =
FLAGS_blob_garbage_collection_age_cutoff;
options.blob_garbage_collection_force_threshold =
FLAGS_blob_garbage_collection_force_threshold;
options.blob_compaction_readahead_size = FLAGS_blob_compaction_readahead_size;
options.blob_file_starting_level = FLAGS_blob_file_starting_level;
if (FLAGS_use_blob_cache) {
if (FLAGS_use_shared_block_and_blob_cache) {
options.blob_cache = cache;
} else {
if (FLAGS_blob_cache_size > 0) {
LRUCacheOptions co;
co.capacity = FLAGS_blob_cache_size;
co.num_shard_bits = FLAGS_blob_cache_numshardbits;
options.blob_cache = NewLRUCache(co);
} else {
fprintf(stderr,
"Unable to create a standalone blob cache if blob_cache_size "
"<= 0.\n");
exit(1);
}
}
switch (FLAGS_prepopulate_blob_cache) {
case 0:
options.prepopulate_blob_cache = PrepopulateBlobCache::kDisable;
break;
case 1:
options.prepopulate_blob_cache = PrepopulateBlobCache::kFlushOnly;
break;
default:
fprintf(stderr, "Unknown prepopulate blob cache mode\n");
exit(1);
}
}
options.wal_compression =
StringToCompressionType(FLAGS_wal_compression.c_str());
if (FLAGS_enable_tiered_storage) {
options.bottommost_temperature = Temperature::kCold;
}
options.preclude_last_level_data_seconds =
FLAGS_preclude_last_level_data_seconds;
options.preserve_internal_time_seconds = FLAGS_preserve_internal_time_seconds;
switch (FLAGS_rep_factory) {
case kSkipList:
// no need to do anything
break;
case kHashSkipList:
options.memtable_factory.reset(NewHashSkipListRepFactory(10000));
break;
case kVectorRep:
options.memtable_factory.reset(new VectorRepFactory());
break;
}
if (FLAGS_use_full_merge_v1) {
options.merge_operator = MergeOperators::CreateDeprecatedPutOperator();
} else {
options.merge_operator = MergeOperators::CreatePutOperator();
}
if (FLAGS_enable_compaction_filter) {
options.compaction_filter_factory =
std::make_shared<DbStressCompactionFilterFactory>();
}
options.best_efforts_recovery = FLAGS_best_efforts_recovery;
options.paranoid_file_checks = FLAGS_paranoid_file_checks;
options.fail_if_options_file_error = FLAGS_fail_if_options_file_error;
if (FLAGS_user_timestamp_size > 0) {
CheckAndSetOptionsForUserTimestamp(options);
}
options.allow_data_in_errors = FLAGS_allow_data_in_errors;
}
void InitializeOptionsGeneral(
const std::shared_ptr<Cache>& cache,
const std::shared_ptr<const FilterPolicy>& filter_policy,
Options& options) {
options.create_missing_column_families = true;
options.create_if_missing = true;
if (!options.statistics) {
options.statistics = dbstats;
}
if (options.env == Options().env) {
options.env = db_stress_env;
}
assert(options.table_factory);
auto table_options =
options.table_factory->GetOptions<BlockBasedTableOptions>();
if (table_options) {
if (FLAGS_cache_size > 0) {
table_options->block_cache = cache;
}
if (!table_options->filter_policy) {
table_options->filter_policy = filter_policy;
}
}
// TODO: row_cache, thread-pool IO priority, CPU priority.
if (!options.rate_limiter) {
if (FLAGS_rate_limiter_bytes_per_sec > 0) {
options.rate_limiter.reset(NewGenericRateLimiter(
FLAGS_rate_limiter_bytes_per_sec, 1000 /* refill_period_us */,
10 /* fairness */,
FLAGS_rate_limit_bg_reads ? RateLimiter::Mode::kReadsOnly
: RateLimiter::Mode::kWritesOnly));
}
}
if (!options.file_checksum_gen_factory) {
options.file_checksum_gen_factory =
GetFileChecksumImpl(FLAGS_file_checksum_impl);
}
if (FLAGS_sst_file_manager_bytes_per_sec > 0 ||
FLAGS_sst_file_manager_bytes_per_truncate > 0) {
Status status;
options.sst_file_manager.reset(NewSstFileManager(
db_stress_env, options.info_log, "" /* trash_dir */,
static_cast<int64_t>(FLAGS_sst_file_manager_bytes_per_sec),
true /* delete_existing_trash */, &status,
0.25 /* max_trash_db_ratio */,
FLAGS_sst_file_manager_bytes_per_truncate));
if (!status.ok()) {
fprintf(stderr, "SstFileManager creation failed: %s\n",
status.ToString().c_str());
exit(1);
}
}
if (FLAGS_preserve_unverified_changes) {
if (!options.avoid_flush_during_recovery) {
fprintf(stderr,
"WARNING: flipping `avoid_flush_during_recovery` to true for "
"`preserve_unverified_changes` to keep all files\n");
options.avoid_flush_during_recovery = true;
}
// Together with `avoid_flush_during_recovery == true`, this will prevent
// live files from becoming obsolete and deleted between `DB::Open()` and
// `DisableFileDeletions()` due to flush or compaction. We do not need to
// warn the user since we will reenable compaction soon.
options.disable_auto_compactions = true;
}
options.table_properties_collector_factories.emplace_back(
std::make_shared<DbStressTablePropertiesCollectorFactory>());
}
} // namespace ROCKSDB_NAMESPACE
#endif // GFLAGS
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