db_stress.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.
//
// The test uses an array to compare against values written to the database.
// Keys written to the array are in 1:1 correspondence to the actual values in
// the database according to the formula in the function GenerateValue.
// Space is reserved in the array from 0 to FLAGS_max_key and values are
// randomly written/deleted/read from those positions. During verification we
// compare all the positions in the array. To shorten/elongate the running
// time, you could change the settings: FLAGS_max_key, FLAGS_ops_per_thread,
// (sometimes also FLAGS_threads).
//
// NOTE that if FLAGS_test_batches_snapshots is set, the test will have
// different behavior. See comment of the flag for details.
#ifndef GFLAGS
#include <cstdio>
int main() {
fprintf(stderr, "Please install gflags to run rocksdb tools\n");
return 1;
}
#else
#ifndef __STDC_FORMAT_MACROS
#define __STDC_FORMAT_MACROS
#endif // __STDC_FORMAT_MACROS
#include <fcntl.h>
#include <inttypes.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <algorithm>
#include <chrono>
#include <exception>
#include <queue>
#include <thread>
#include "db/db_impl.h"
#include "db/version_set.h"
#include "hdfs/env_hdfs.h"
#include "monitoring/histogram.h"
#include "options/options_helper.h"
#include "port/port.h"
#include "rocksdb/cache.h"
#include "rocksdb/env.h"
#include "rocksdb/slice.h"
#include "rocksdb/slice_transform.h"
#include "rocksdb/statistics.h"
#include "rocksdb/utilities/backupable_db.h"
#include "rocksdb/utilities/checkpoint.h"
#include "rocksdb/utilities/db_ttl.h"
#include "rocksdb/utilities/options_util.h"
#include "rocksdb/utilities/transaction.h"
#include "rocksdb/utilities/transaction_db.h"
#include "rocksdb/write_batch.h"
#include "util/coding.h"
#include "util/compression.h"
#include "util/crc32c.h"
#include "util/gflags_compat.h"
#include "util/logging.h"
#include "util/mutexlock.h"
#include "util/random.h"
#include "util/string_util.h"
// SyncPoint is not supported in Released Windows Mode.
#if !(defined NDEBUG) || !defined(OS_WIN)
#include "util/sync_point.h"
#endif // !(defined NDEBUG) || !defined(OS_WIN)
#include "util/testutil.h"
#include "utilities/merge_operators.h"
using GFLAGS_NAMESPACE::ParseCommandLineFlags;
using GFLAGS_NAMESPACE::RegisterFlagValidator;
using GFLAGS_NAMESPACE::SetUsageMessage;
static const long KB = 1024;
static const int kRandomValueMaxFactor = 3;
static const int kValueMaxLen = 100;
static bool ValidateUint32Range(const char* flagname, uint64_t value) {
if (value > std::numeric_limits<uint32_t>::max()) {
fprintf(stderr,
"Invalid value for --%s: %lu, overflow\n",
flagname,
(unsigned long)value);
return false;
}
return true;
}
DEFINE_uint64(seed, 2341234, "Seed for PRNG");
static const bool FLAGS_seed_dummy __attribute__((__unused__)) =
RegisterFlagValidator(&FLAGS_seed, &ValidateUint32Range);
DEFINE_bool(read_only, false, "True if open DB in read-only mode during tests");
DEFINE_int64(max_key, 1 * KB* KB,
"Max number of key/values to place in database");
DEFINE_int32(column_families, 10, "Number of column families");
DEFINE_string(
options_file, "",
"The path to a RocksDB options file. If specified, then db_stress will "
"run with the RocksDB options in the default column family of the "
"specified options file. Note that, when an options file is provided, "
"db_stress will ignore the flag values for all options that may be passed "
"via options file.");
DEFINE_int64(
active_width, 0,
"Number of keys in active span of the key-range at any given time. The "
"span begins with its left endpoint at key 0, gradually moves rightwards, "
"and ends with its right endpoint at max_key. If set to 0, active_width "
"will be sanitized to be equal to max_key.");
// TODO(noetzli) Add support for single deletes
DEFINE_bool(test_batches_snapshots, false,
"If set, the test uses MultiGet(), MultiPut() and MultiDelete()"
" which read/write/delete multiple keys in a batch. In this mode,"
" we do not verify db content by comparing the content with the "
"pre-allocated array. Instead, we do partial verification inside"
" MultiGet() by checking various values in a batch. Benefit of"
" this mode:\n"
"\t(a) No need to acquire mutexes during writes (less cache "
"flushes in multi-core leading to speed up)\n"
"\t(b) No long validation at the end (more speed up)\n"
"\t(c) Test snapshot and atomicity of batch writes");
DEFINE_bool(atomic_flush, false,
"If set, enables atomic flush in the options.\n");
DEFINE_bool(test_atomic_flush, false,
"If set, runs the stress test dedicated to verifying atomic flush "
"functionality. Setting this implies `atomic_flush=true`.\n");
DEFINE_int32(threads, 32, "Number of concurrent threads to run.");
DEFINE_int32(ttl, -1,
"Opens the db with this ttl value if this is not -1. "
"Carefully specify a large value such that verifications on "
"deleted values don't fail");
DEFINE_int32(value_size_mult, 8,
"Size of value will be this number times rand_int(1,3) bytes");
DEFINE_int32(compaction_readahead_size, 0, "Compaction readahead size");
DEFINE_bool(enable_pipelined_write, false, "Pipeline WAL/memtable writes");
DEFINE_bool(verify_before_write, false, "Verify before write");
DEFINE_bool(histogram, false, "Print histogram of operation timings");
DEFINE_bool(destroy_db_initially, true,
"Destroys the database dir before start if this is true");
DEFINE_bool(verbose, false, "Verbose");
DEFINE_bool(progress_reports, true,
"If true, db_stress will report number of finished operations");
DEFINE_uint64(db_write_buffer_size, rocksdb::Options().db_write_buffer_size,
"Number of bytes to buffer in all memtables before compacting");
DEFINE_int32(write_buffer_size,
static_cast<int32_t>(rocksdb::Options().write_buffer_size),
"Number of bytes to buffer in memtable before compacting");
DEFINE_int32(max_write_buffer_number,
rocksdb::Options().max_write_buffer_number,
"The number of in-memory memtables. "
"Each memtable is of size FLAGS_write_buffer_size.");
DEFINE_int32(min_write_buffer_number_to_merge,
rocksdb::Options().min_write_buffer_number_to_merge,
"The minimum number of write buffers that will be merged together "
"before writing to storage. This is cheap because it is an "
"in-memory merge. If this feature is not enabled, then all these "
"write buffers are flushed to L0 as separate files and this "
"increases read amplification because a get request has to check "
"in all of these files. Also, an in-memory merge may result in "
"writing less data to storage if there are duplicate records in"
" each of these individual write buffers.");
DEFINE_int32(max_write_buffer_number_to_maintain,
rocksdb::Options().max_write_buffer_number_to_maintain,
"The total maximum number of write buffers to maintain in memory "
"including copies of buffers that have already been flushed. "
"Unlike max_write_buffer_number, this parameter does not affect "
"flushing. This controls the minimum amount of write history "
"that will be available in memory for conflict checking when "
"Transactions are used. If this value is too low, some "
"transactions may fail at commit time due to not being able to "
"determine whether there were any write conflicts. Setting this "
"value to 0 will cause write buffers to be freed immediately "
"after they are flushed. If this value is set to -1, "
"'max_write_buffer_number' will be used.");
DEFINE_double(memtable_prefix_bloom_size_ratio,
rocksdb::Options().memtable_prefix_bloom_size_ratio,
"creates prefix blooms for memtables, each with size "
"`write_buffer_size * memtable_prefix_bloom_size_ratio`.");
DEFINE_int32(open_files, rocksdb::Options().max_open_files,
"Maximum number of files to keep open at the same time "
"(use default if == 0)");
DEFINE_int64(compressed_cache_size, -1,
"Number of bytes to use as a cache of compressed data."
" Negative means use default settings.");
DEFINE_int32(compaction_style, rocksdb::Options().compaction_style, "");
DEFINE_int32(level0_file_num_compaction_trigger,
rocksdb::Options().level0_file_num_compaction_trigger,
"Level0 compaction start trigger");
DEFINE_int32(level0_slowdown_writes_trigger,
rocksdb::Options().level0_slowdown_writes_trigger,
"Number of files in level-0 that will slow down writes");
DEFINE_int32(level0_stop_writes_trigger,
rocksdb::Options().level0_stop_writes_trigger,
"Number of files in level-0 that will trigger put stop.");
DEFINE_int32(block_size,
static_cast<int32_t>(rocksdb::BlockBasedTableOptions().block_size),
"Number of bytes in a block.");
DEFINE_int32(
format_version,
static_cast<int32_t>(rocksdb::BlockBasedTableOptions().format_version),
"Format version of SST files.");
DEFINE_int32(index_block_restart_interval,
rocksdb::BlockBasedTableOptions().index_block_restart_interval,
"Number of keys between restart points "
"for delta encoding of keys in index block.");
DEFINE_int32(max_background_compactions,
rocksdb::Options().max_background_compactions,
"The maximum number of concurrent background compactions "
"that can occur in parallel.");
DEFINE_int32(num_bottom_pri_threads, 0,
"The number of threads in the bottom-priority thread pool (used "
"by universal compaction only).");
DEFINE_int32(compaction_thread_pool_adjust_interval, 0,
"The interval (in milliseconds) to adjust compaction thread pool "
"size. Don't change it periodically if the value is 0.");
DEFINE_int32(compaction_thread_pool_variations, 2,
"Range of background thread pool size variations when adjusted "
"periodically.");
DEFINE_int32(max_background_flushes, rocksdb::Options().max_background_flushes,
"The maximum number of concurrent background flushes "
"that can occur in parallel.");
DEFINE_int32(universal_size_ratio, 0, "The ratio of file sizes that trigger"
" compaction in universal style");
DEFINE_int32(universal_min_merge_width, 0, "The minimum number of files to "
"compact in universal style compaction");
DEFINE_int32(universal_max_merge_width, 0, "The max number of files to compact"
" in universal style compaction");
DEFINE_int32(universal_max_size_amplification_percent, 0,
"The max size amplification for universal style compaction");
DEFINE_int32(clear_column_family_one_in, 1000000,
"With a chance of 1/N, delete a column family and then recreate "
"it again. If N == 0, never drop/create column families. "
"When test_batches_snapshots is true, this flag has no effect");
DEFINE_int32(set_options_one_in, 0,
"With a chance of 1/N, change some random options");
DEFINE_int32(set_in_place_one_in, 0,
"With a chance of 1/N, toggle in place support option");
DEFINE_int64(cache_size, 2LL * KB * KB * KB,
"Number of bytes to use as a cache of uncompressed data.");
DEFINE_bool(use_clock_cache, false,
"Replace default LRU block cache with clock cache.");
DEFINE_uint64(subcompactions, 1,
"Maximum number of subcompactions to divide L0-L1 compactions "
"into.");
DEFINE_bool(allow_concurrent_memtable_write, false,
"Allow multi-writers to update mem tables in parallel.");
DEFINE_bool(enable_write_thread_adaptive_yield, true,
"Use a yielding spin loop for brief writer thread waits.");
static const bool FLAGS_subcompactions_dummy __attribute__((__unused__)) =
RegisterFlagValidator(&FLAGS_subcompactions, &ValidateUint32Range);
static bool ValidateInt32Positive(const char* flagname, int32_t value) {
if (value < 0) {
fprintf(stderr, "Invalid value for --%s: %d, must be >=0\n",
flagname, value);
return false;
}
return true;
}
DEFINE_int32(reopen, 10, "Number of times database reopens");
static const bool FLAGS_reopen_dummy __attribute__((__unused__)) =
RegisterFlagValidator(&FLAGS_reopen, &ValidateInt32Positive);
DEFINE_int32(bloom_bits, 10, "Bloom filter bits per key. "
"Negative means use default settings.");
DEFINE_bool(use_block_based_filter, false, "use block based filter"
"instead of full filter for block based table");
DEFINE_string(db, "", "Use the db with the following name.");
DEFINE_string(
expected_values_path, "",
"File where the array of expected uint32_t values will be stored. If "
"provided and non-empty, the DB state will be verified against these "
"values after recovery. --max_key and --column_family must be kept the "
"same across invocations of this program that use the same "
"--expected_values_path.");
DEFINE_bool(verify_checksum, false,
"Verify checksum for every block read from storage");
DEFINE_bool(mmap_read, rocksdb::Options().allow_mmap_reads,
"Allow reads to occur via mmap-ing files");
DEFINE_bool(mmap_write, rocksdb::Options().allow_mmap_writes,
"Allow writes to occur via mmap-ing files");
DEFINE_bool(use_direct_reads, rocksdb::Options().use_direct_reads,
"Use O_DIRECT for reading data");
DEFINE_bool(use_direct_io_for_flush_and_compaction,
rocksdb::Options().use_direct_io_for_flush_and_compaction,
"Use O_DIRECT for writing data");
// Database statistics
static std::shared_ptr<rocksdb::Statistics> dbstats;
DEFINE_bool(statistics, false, "Create database statistics");
DEFINE_bool(sync, false, "Sync all writes to disk");
DEFINE_bool(use_fsync, false, "If true, issue fsync instead of fdatasync");
DEFINE_int32(kill_random_test, 0,
"If non-zero, kill at various points in source code with "
"probability 1/this");
static const bool FLAGS_kill_random_test_dummy __attribute__((__unused__)) =
RegisterFlagValidator(&FLAGS_kill_random_test, &ValidateInt32Positive);
extern int rocksdb_kill_odds;
DEFINE_string(kill_prefix_blacklist, "",
"If non-empty, kill points with prefix in the list given will be"
" skipped. Items are comma-separated.");
extern std::vector<std::string> rocksdb_kill_prefix_blacklist;
DEFINE_bool(disable_wal, false, "If true, do not write WAL for write.");
DEFINE_int64(target_file_size_base, rocksdb::Options().target_file_size_base,
"Target level-1 file size for compaction");
DEFINE_int32(target_file_size_multiplier, 1,
"A multiplier to compute target level-N file size (N >= 2)");
DEFINE_uint64(max_bytes_for_level_base,
rocksdb::Options().max_bytes_for_level_base,
"Max bytes for level-1");
DEFINE_double(max_bytes_for_level_multiplier, 2,
"A multiplier to compute max bytes for level-N (N >= 2)");
DEFINE_int32(range_deletion_width, 10,
"The width of the range deletion intervals.");
DEFINE_uint64(rate_limiter_bytes_per_sec, 0, "Set options.rate_limiter value.");
DEFINE_bool(rate_limit_bg_reads, false,
"Use options.rate_limiter on compaction reads");
DEFINE_bool(use_txn, false,
"Use TransactionDB. Currently the default write policy is "
"TxnDBWritePolicy::WRITE_PREPARED");
DEFINE_int32(backup_one_in, 0,
"If non-zero, then CreateNewBackup() will be called once for "
"every N operations on average. 0 indicates CreateNewBackup() "
"is disabled.");
DEFINE_int32(checkpoint_one_in, 0,
"If non-zero, then CreateCheckpoint() will be called once for "
"every N operations on average. 0 indicates CreateCheckpoint() "
"is disabled.");
DEFINE_int32(ingest_external_file_one_in, 0,
"If non-zero, then IngestExternalFile() will be called once for "
"every N operations on average. 0 indicates IngestExternalFile() "
"is disabled.");
DEFINE_int32(ingest_external_file_width, 1000,
"The width of the ingested external files.");
DEFINE_int32(compact_files_one_in, 0,
"If non-zero, then CompactFiles() will be called once for every N "
"operations on average. 0 indicates CompactFiles() is disabled.");
DEFINE_int32(compact_range_one_in, 0,
"If non-zero, then CompactRange() will be called once for every N "
"operations on average. 0 indicates CompactRange() is disabled.");
DEFINE_int32(flush_one_in, 0,
"If non-zero, then Flush() will be called once for every N ops "
"on average. 0 indicates calls to Flush() are disabled.");
DEFINE_int32(compact_range_width, 10000,
"The width of the ranges passed to CompactRange().");
DEFINE_int32(acquire_snapshot_one_in, 0,
"If non-zero, then acquires a snapshot once every N operations on "
"average.");
DEFINE_bool(compare_full_db_state_snapshot, false,
"If set we compare state of entire db (in one of the threads) with"
"each snapshot.");
DEFINE_uint64(snapshot_hold_ops, 0,
"If non-zero, then releases snapshots N operations after they're "
"acquired.");
static bool ValidateInt32Percent(const char* flagname, int32_t value) {
if (value < 0 || value>100) {
fprintf(stderr, "Invalid value for --%s: %d, 0<= pct <=100 \n",
flagname, value);
return false;
}
return true;
}
DEFINE_int32(readpercent, 10,
"Ratio of reads to total workload (expressed as a percentage)");
static const bool FLAGS_readpercent_dummy __attribute__((__unused__)) =
RegisterFlagValidator(&FLAGS_readpercent, &ValidateInt32Percent);
DEFINE_int32(prefixpercent, 20,
"Ratio of prefix iterators to total workload (expressed as a"
" percentage)");
static const bool FLAGS_prefixpercent_dummy __attribute__((__unused__)) =
RegisterFlagValidator(&FLAGS_prefixpercent, &ValidateInt32Percent);
DEFINE_int32(writepercent, 45,
"Ratio of writes to total workload (expressed as a percentage)");
static const bool FLAGS_writepercent_dummy __attribute__((__unused__)) =
RegisterFlagValidator(&FLAGS_writepercent, &ValidateInt32Percent);
DEFINE_int32(delpercent, 15,
"Ratio of deletes to total workload (expressed as a percentage)");
static const bool FLAGS_delpercent_dummy __attribute__((__unused__)) =
RegisterFlagValidator(&FLAGS_delpercent, &ValidateInt32Percent);
DEFINE_int32(delrangepercent, 0,
"Ratio of range deletions to total workload (expressed as a "
"percentage). Cannot be used with test_batches_snapshots");
static const bool FLAGS_delrangepercent_dummy __attribute__((__unused__)) =
RegisterFlagValidator(&FLAGS_delrangepercent, &ValidateInt32Percent);
DEFINE_int32(nooverwritepercent, 60,
"Ratio of keys without overwrite to total workload (expressed as "
" a percentage)");
static const bool FLAGS_nooverwritepercent_dummy __attribute__((__unused__)) =
RegisterFlagValidator(&FLAGS_nooverwritepercent, &ValidateInt32Percent);
DEFINE_int32(iterpercent, 10, "Ratio of iterations to total workload"
" (expressed as a percentage)");
static const bool FLAGS_iterpercent_dummy __attribute__((__unused__)) =
RegisterFlagValidator(&FLAGS_iterpercent, &ValidateInt32Percent);
DEFINE_uint64(num_iterations, 10, "Number of iterations per MultiIterate run");
static const bool FLAGS_num_iterations_dummy __attribute__((__unused__)) =
RegisterFlagValidator(&FLAGS_num_iterations, &ValidateUint32Range);
namespace {
enum rocksdb::CompressionType StringToCompressionType(const char* ctype) {
assert(ctype);
if (!strcasecmp(ctype, "none"))
return rocksdb::kNoCompression;
else if (!strcasecmp(ctype, "snappy"))
return rocksdb::kSnappyCompression;
else if (!strcasecmp(ctype, "zlib"))
return rocksdb::kZlibCompression;
else if (!strcasecmp(ctype, "bzip2"))
return rocksdb::kBZip2Compression;
else if (!strcasecmp(ctype, "lz4"))
return rocksdb::kLZ4Compression;
else if (!strcasecmp(ctype, "lz4hc"))
return rocksdb::kLZ4HCCompression;
else if (!strcasecmp(ctype, "xpress"))
return rocksdb::kXpressCompression;
else if (!strcasecmp(ctype, "zstd"))
return rocksdb::kZSTD;
fprintf(stderr, "Cannot parse compression type '%s'\n", ctype);
return rocksdb::kSnappyCompression; //default value
}
enum rocksdb::ChecksumType StringToChecksumType(const char* ctype) {
assert(ctype);
auto iter = rocksdb::checksum_type_string_map.find(ctype);
if (iter != rocksdb::checksum_type_string_map.end()) {
return iter->second;
}
fprintf(stderr, "Cannot parse checksum type '%s'\n", ctype);
return rocksdb::kCRC32c;
}
std::string ChecksumTypeToString(rocksdb::ChecksumType ctype) {
auto iter = std::find_if(
rocksdb::checksum_type_string_map.begin(),
rocksdb::checksum_type_string_map.end(),
[&](const std::pair<std::string, rocksdb::ChecksumType>&
name_and_enum_val) { return name_and_enum_val.second == ctype; });
assert(iter != rocksdb::checksum_type_string_map.end());
return iter->first;
}
std::vector<std::string> SplitString(std::string src) {
std::vector<std::string> ret;
if (src.empty()) {
return ret;
}
size_t pos = 0;
size_t pos_comma;
while ((pos_comma = src.find(',', pos)) != std::string::npos) {
ret.push_back(src.substr(pos, pos_comma - pos));
pos = pos_comma + 1;
}
ret.push_back(src.substr(pos, src.length()));
return ret;
}
} // namespace
DEFINE_string(compression_type, "snappy",
"Algorithm to use to compress the database");
static enum rocksdb::CompressionType FLAGS_compression_type_e =
rocksdb::kSnappyCompression;
DEFINE_int32(compression_max_dict_bytes, 0,
"Maximum size of dictionary used to prime the compression "
"library.");
DEFINE_int32(compression_zstd_max_train_bytes, 0,
"Maximum size of training data passed to zstd's dictionary "
"trainer.");
DEFINE_string(checksum_type, "kCRC32c", "Algorithm to use to checksum blocks");
static enum rocksdb::ChecksumType FLAGS_checksum_type_e = rocksdb::kCRC32c;
DEFINE_string(hdfs, "", "Name of hdfs environment");
// posix or hdfs environment
static rocksdb::Env* FLAGS_env = rocksdb::Env::Default();
DEFINE_uint64(ops_per_thread, 1200000, "Number of operations per thread.");
static const bool FLAGS_ops_per_thread_dummy __attribute__((__unused__)) =
RegisterFlagValidator(&FLAGS_ops_per_thread, &ValidateUint32Range);
DEFINE_uint64(log2_keys_per_lock, 2, "Log2 of number of keys per lock");
static const bool FLAGS_log2_keys_per_lock_dummy __attribute__((__unused__)) =
RegisterFlagValidator(&FLAGS_log2_keys_per_lock, &ValidateUint32Range);
DEFINE_uint64(max_manifest_file_size, 16384, "Maximum size of a MANIFEST file");
DEFINE_bool(in_place_update, false, "On true, does inplace update in memtable");
enum RepFactory {
kSkipList,
kHashSkipList,
kVectorRep
};
namespace {
enum RepFactory StringToRepFactory(const char* ctype) {
assert(ctype);
if (!strcasecmp(ctype, "skip_list"))
return kSkipList;
else if (!strcasecmp(ctype, "prefix_hash"))
return kHashSkipList;
else if (!strcasecmp(ctype, "vector"))
return kVectorRep;
fprintf(stdout, "Cannot parse memreptable %s\n", ctype);
return kSkipList;
}
#ifdef _MSC_VER
#pragma warning(push)
// truncation of constant value on static_cast
#pragma warning(disable : 4309)
#endif
bool GetNextPrefix(const rocksdb::Slice& src, std::string* v) {
std::string ret = src.ToString();
for (int i = static_cast<int>(ret.size()) - 1; i >= 0; i--) {
if (ret[i] != static_cast<char>(255)) {
ret[i] = ret[i] + 1;
break;
} else if (i != 0) {
ret[i] = 0;
} else {
// all FF. No next prefix
return false;
}
}
*v = ret;
return true;
}
#ifdef _MSC_VER
#pragma warning(pop)
#endif
} // namespace
static enum RepFactory FLAGS_rep_factory;
DEFINE_string(memtablerep, "prefix_hash", "");
static bool ValidatePrefixSize(const char* flagname, int32_t value) {
if (value < 0 || value > 8) {
fprintf(stderr, "Invalid value for --%s: %d. 0 <= PrefixSize <= 8\n",
flagname, value);
return false;
}
return true;
}
DEFINE_int32(prefix_size, 7, "Control the prefix size for HashSkipListRep");
static const bool FLAGS_prefix_size_dummy __attribute__((__unused__)) =
RegisterFlagValidator(&FLAGS_prefix_size, &ValidatePrefixSize);
DEFINE_bool(use_merge, false, "On true, replaces all writes with a Merge "
"that behaves like a Put");
DEFINE_bool(use_full_merge_v1, false,
"On true, use a merge operator that implement the deprecated "
"version of FullMerge");
namespace rocksdb {
// convert long to a big-endian slice key
static std::string Key(int64_t val) {
std::string little_endian_key;
std::string big_endian_key;
PutFixed64(&little_endian_key, val);
assert(little_endian_key.size() == sizeof(val));
big_endian_key.resize(sizeof(val));
for (size_t i = 0 ; i < sizeof(val); ++i) {
big_endian_key[i] = little_endian_key[sizeof(val) - 1 - i];
}
return big_endian_key;
}
static bool GetIntVal(std::string big_endian_key, uint64_t *key_p) {
unsigned int size_key = sizeof(*key_p);
assert(big_endian_key.size() == size_key);
std::string little_endian_key;
little_endian_key.resize(size_key);
for (size_t i = 0 ; i < size_key; ++i) {
little_endian_key[i] = big_endian_key[size_key - 1 - i];
}
Slice little_endian_slice = Slice(little_endian_key);
return GetFixed64(&little_endian_slice, key_p);
}
static std::string StringToHex(const std::string& str) {
std::string result = "0x";
result.append(Slice(str).ToString(true));
return result;
}
class StressTest;
namespace {
class Stats {
private:
uint64_t start_;
uint64_t finish_;
double seconds_;
long done_;
long gets_;
long prefixes_;
long writes_;
long deletes_;
size_t single_deletes_;
long iterator_size_sums_;
long founds_;
long iterations_;
long range_deletions_;
long covered_by_range_deletions_;
long errors_;
long num_compact_files_succeed_;
long num_compact_files_failed_;
int next_report_;
size_t bytes_;
uint64_t last_op_finish_;
HistogramImpl hist_;
public:
Stats() { }
void Start() {
next_report_ = 100;
hist_.Clear();
done_ = 0;
gets_ = 0;
prefixes_ = 0;
writes_ = 0;
deletes_ = 0;
single_deletes_ = 0;
iterator_size_sums_ = 0;
founds_ = 0;
iterations_ = 0;
range_deletions_ = 0;
covered_by_range_deletions_ = 0;
errors_ = 0;
bytes_ = 0;
seconds_ = 0;
num_compact_files_succeed_ = 0;
num_compact_files_failed_ = 0;
start_ = FLAGS_env->NowMicros();
last_op_finish_ = start_;
finish_ = start_;
}
void Merge(const Stats& other) {
hist_.Merge(other.hist_);
done_ += other.done_;
gets_ += other.gets_;
prefixes_ += other.prefixes_;
writes_ += other.writes_;
deletes_ += other.deletes_;
single_deletes_ += other.single_deletes_;
iterator_size_sums_ += other.iterator_size_sums_;
founds_ += other.founds_;
iterations_ += other.iterations_;
range_deletions_ += other.range_deletions_;
covered_by_range_deletions_ = other.covered_by_range_deletions_;
errors_ += other.errors_;
bytes_ += other.bytes_;
seconds_ += other.seconds_;
num_compact_files_succeed_ += other.num_compact_files_succeed_;
num_compact_files_failed_ += other.num_compact_files_failed_;
if (other.start_ < start_) start_ = other.start_;
if (other.finish_ > finish_) finish_ = other.finish_;
}
void Stop() {
finish_ = FLAGS_env->NowMicros();
seconds_ = (finish_ - start_) * 1e-6;
}
void FinishedSingleOp() {
if (FLAGS_histogram) {
auto now = FLAGS_env->NowMicros();
auto micros = now - last_op_finish_;
hist_.Add(micros);
if (micros > 20000) {
fprintf(stdout, "long op: %" PRIu64 " micros%30s\r", micros, "");
}
last_op_finish_ = now;
}
done_++;
if (FLAGS_progress_reports) {
if (done_ >= next_report_) {
if (next_report_ < 1000) next_report_ += 100;
else if (next_report_ < 5000) next_report_ += 500;
else if (next_report_ < 10000) next_report_ += 1000;
else if (next_report_ < 50000) next_report_ += 5000;
else if (next_report_ < 100000) next_report_ += 10000;
else if (next_report_ < 500000) next_report_ += 50000;
else next_report_ += 100000;
fprintf(stdout, "... finished %ld ops%30s\r", done_, "");
}
}
}
void AddBytesForWrites(long nwrites, size_t nbytes) {
writes_ += nwrites;
bytes_ += nbytes;
}
void AddGets(long ngets, long nfounds) {
founds_ += nfounds;
gets_ += ngets;
}
void AddPrefixes(long nprefixes, long count) {
prefixes_ += nprefixes;
iterator_size_sums_ += count;
}
void AddIterations(long n) { iterations_ += n; }
void AddDeletes(long n) { deletes_ += n; }
void AddSingleDeletes(size_t n) { single_deletes_ += n; }
void AddRangeDeletions(long n) { range_deletions_ += n; }
void AddCoveredByRangeDeletions(long n) { covered_by_range_deletions_ += n; }
void AddErrors(long n) { errors_ += n; }
void AddNumCompactFilesSucceed(long n) { num_compact_files_succeed_ += n; }
void AddNumCompactFilesFailed(long n) { num_compact_files_failed_ += n; }
void Report(const char* name) {
std::string extra;
if (bytes_ < 1 || done_ < 1) {
fprintf(stderr, "No writes or ops?\n");
return;
}
double elapsed = (finish_ - start_) * 1e-6;
double bytes_mb = bytes_ / 1048576.0;
double rate = bytes_mb / elapsed;
double throughput = (double)done_/elapsed;
fprintf(stdout, "%-12s: ", name);
fprintf(stdout, "%.3f micros/op %ld ops/sec\n",
seconds_ * 1e6 / done_, (long)throughput);
fprintf(stdout, "%-12s: Wrote %.2f MB (%.2f MB/sec) (%ld%% of %ld ops)\n",
"", bytes_mb, rate, (100*writes_)/done_, done_);
fprintf(stdout, "%-12s: Wrote %ld times\n", "", writes_);
fprintf(stdout, "%-12s: Deleted %ld times\n", "", deletes_);
fprintf(stdout, "%-12s: Single deleted %" ROCKSDB_PRIszt " times\n", "",
single_deletes_);
fprintf(stdout, "%-12s: %ld read and %ld found the key\n", "",
gets_, founds_);
fprintf(stdout, "%-12s: Prefix scanned %ld times\n", "", prefixes_);
fprintf(stdout, "%-12s: Iterator size sum is %ld\n", "",
iterator_size_sums_);
fprintf(stdout, "%-12s: Iterated %ld times\n", "", iterations_);
fprintf(stdout, "%-12s: Deleted %ld key-ranges\n", "", range_deletions_);
fprintf(stdout, "%-12s: Range deletions covered %ld keys\n", "",
covered_by_range_deletions_);
fprintf(stdout, "%-12s: Got errors %ld times\n", "", errors_);
fprintf(stdout, "%-12s: %ld CompactFiles() succeed\n", "",
num_compact_files_succeed_);
fprintf(stdout, "%-12s: %ld CompactFiles() did not succeed\n", "",
num_compact_files_failed_);
if (FLAGS_histogram) {
fprintf(stdout, "Microseconds per op:\n%s\n", hist_.ToString().c_str());
}
fflush(stdout);
}
};
// State shared by all concurrent executions of the same benchmark.
class SharedState {
public:
// indicates a key may have any value (or not be present) as an operation on
// it is incomplete.
static const uint32_t UNKNOWN_SENTINEL;
// indicates a key should definitely be deleted
static const uint32_t DELETION_SENTINEL;
explicit SharedState(StressTest* stress_test)
: cv_(&mu_),
seed_(static_cast<uint32_t>(FLAGS_seed)),
max_key_(FLAGS_max_key),
log2_keys_per_lock_(static_cast<uint32_t>(FLAGS_log2_keys_per_lock)),
num_threads_(FLAGS_threads),
num_initialized_(0),
num_populated_(0),
vote_reopen_(0),
num_done_(0),
start_(false),
start_verify_(false),
should_stop_bg_thread_(false),
bg_thread_finished_(false),
stress_test_(stress_test),
verification_failure_(false),
no_overwrite_ids_(FLAGS_column_families),
values_(nullptr) {
// Pick random keys in each column family that will not experience
// overwrite
printf("Choosing random keys with no overwrite\n");
Random64 rnd(seed_);
// Start with the identity permutation. Subsequent iterations of
// for loop below will start with perm of previous for loop
int64_t *permutation = new int64_t[max_key_];
for (int64_t i = 0; i < max_key_; i++) {
permutation[i] = i;
}
// Now do the Knuth shuffle
int64_t num_no_overwrite_keys = (max_key_ * FLAGS_nooverwritepercent) / 100;
// Only need to figure out first num_no_overwrite_keys of permutation
no_overwrite_ids_.reserve(num_no_overwrite_keys);
for (int64_t i = 0; i < num_no_overwrite_keys; i++) {
int64_t rand_index = i + rnd.Next() % (max_key_ - i);
// Swap i and rand_index;
int64_t temp = permutation[i];
permutation[i] = permutation[rand_index];
permutation[rand_index] = temp;
// Fill no_overwrite_ids_ with the first num_no_overwrite_keys of
// permutation
no_overwrite_ids_.insert(permutation[i]);
}
delete[] permutation;
size_t expected_values_size =
sizeof(std::atomic<uint32_t>) * FLAGS_column_families * max_key_;
bool values_init_needed = false;
Status status;
if (!FLAGS_expected_values_path.empty()) {
if (!std::atomic<uint32_t>{}.is_lock_free()) {
status = Status::InvalidArgument(
"Cannot use --expected_values_path on platforms without lock-free "
"std::atomic<uint32_t>");
}
if (status.ok() && FLAGS_clear_column_family_one_in > 0) {
status = Status::InvalidArgument(
"Cannot use --expected_values_path on when "
"--clear_column_family_one_in is greater than zero.");
}
uint64_t size = 0;
if (status.ok()) {
status = FLAGS_env->GetFileSize(FLAGS_expected_values_path, &size);
}
std::unique_ptr<WritableFile> wfile;
if (status.ok() && size == 0) {
const EnvOptions soptions;
status = FLAGS_env->NewWritableFile(FLAGS_expected_values_path, &wfile,
soptions);
}
if (status.ok() && size == 0) {
std::string buf(expected_values_size, '\0');
status = wfile->Append(buf);
values_init_needed = true;
}
if (status.ok()) {
status = FLAGS_env->NewMemoryMappedFileBuffer(
FLAGS_expected_values_path, &expected_mmap_buffer_);
}
if (status.ok()) {
assert(expected_mmap_buffer_->GetLen() == expected_values_size);
values_ =
static_cast<std::atomic<uint32_t>*>(expected_mmap_buffer_->GetBase());
assert(values_ != nullptr);
} else {
fprintf(stderr, "Failed opening shared file '%s' with error: %s\n",
FLAGS_expected_values_path.c_str(), status.ToString().c_str());
assert(values_ == nullptr);
}
}
if (values_ == nullptr) {
values_allocation_.reset(
new std::atomic<uint32_t>[FLAGS_column_families * max_key_]);
values_ = &values_allocation_[0];
values_init_needed = true;
}
assert(values_ != nullptr);
if (values_init_needed) {
for (int i = 0; i < FLAGS_column_families; ++i) {
for (int j = 0; j < max_key_; ++j) {
Delete(i, j, false /* pending */);
}
}
}
if (FLAGS_test_batches_snapshots) {
fprintf(stdout, "No lock creation because test_batches_snapshots set\n");
return;
}
long num_locks = static_cast<long>(max_key_ >> log2_keys_per_lock_);
if (max_key_ & ((1 << log2_keys_per_lock_) - 1)) {
num_locks++;
}
fprintf(stdout, "Creating %ld locks\n", num_locks * FLAGS_column_families);
key_locks_.resize(FLAGS_column_families);
for (int i = 0; i < FLAGS_column_families; ++i) {
key_locks_[i].resize(num_locks);
for (auto& ptr : key_locks_[i]) {
ptr.reset(new port::Mutex);
}
}
}
~SharedState() {}
port::Mutex* GetMutex() {
return &mu_;
}
port::CondVar* GetCondVar() {
return &cv_;
}
StressTest* GetStressTest() const {
return stress_test_;
}
int64_t GetMaxKey() const {
return max_key_;
}
uint32_t GetNumThreads() const {
return num_threads_;
}
void IncInitialized() {
num_initialized_++;
}
void IncOperated() {
num_populated_++;
}
void IncDone() {
num_done_++;
}
void IncVotedReopen() {
vote_reopen_ = (vote_reopen_ + 1) % num_threads_;
}
bool AllInitialized() const {
return num_initialized_ >= num_threads_;
}
bool AllOperated() const {
return num_populated_ >= num_threads_;
}
bool AllDone() const {
return num_done_ >= num_threads_;
}
bool AllVotedReopen() {
return (vote_reopen_ == 0);
}
void SetStart() {
start_ = true;
}
void SetStartVerify() {
start_verify_ = true;
}
bool Started() const {
return start_;
}
bool VerifyStarted() const {
return start_verify_;
}
void SetVerificationFailure() { verification_failure_.store(true); }
bool HasVerificationFailedYet() { return verification_failure_.load(); }
port::Mutex* GetMutexForKey(int cf, int64_t key) {
return key_locks_[cf][key >> log2_keys_per_lock_].get();
}
void LockColumnFamily(int cf) {
for (auto& mutex : key_locks_[cf]) {
mutex->Lock();
}
}
void UnlockColumnFamily(int cf) {
for (auto& mutex : key_locks_[cf]) {
mutex->Unlock();
}
}
std::atomic<uint32_t>& Value(int cf, int64_t key) const {
return values_[cf * max_key_ + key];
}
void ClearColumnFamily(int cf) {
std::fill(&Value(cf, 0 /* key */), &Value(cf + 1, 0 /* key */),
DELETION_SENTINEL);
}
// @param pending True if the update may have started but is not yet
// guaranteed finished. This is useful for crash-recovery testing when the
// process may crash before updating the expected values array.
void Put(int cf, int64_t key, uint32_t value_base, bool pending) {
if (!pending) {
// prevent expected-value update from reordering before Write
std::atomic_thread_fence(std::memory_order_release);
}
Value(cf, key).store(pending ? UNKNOWN_SENTINEL : value_base,
std::memory_order_relaxed);
if (pending) {
// prevent Write from reordering before expected-value update
std::atomic_thread_fence(std::memory_order_release);
}
}
uint32_t Get(int cf, int64_t key) const { return Value(cf, key); }
// @param pending See comment above Put()
// Returns true if the key was not yet deleted.
bool Delete(int cf, int64_t key, bool pending) {
if (Value(cf, key) == DELETION_SENTINEL) {
return false;
}
Put(cf, key, DELETION_SENTINEL, pending);
return true;
}
// @param pending See comment above Put()
// Returns true if the key was not yet deleted.
bool SingleDelete(int cf, int64_t key, bool pending) {
return Delete(cf, key, pending);
}
// @param pending See comment above Put()
// Returns number of keys deleted by the call.
int DeleteRange(int cf, int64_t begin_key, int64_t end_key, bool pending) {
int covered = 0;
for (int64_t key = begin_key; key < end_key; ++key) {
if (Delete(cf, key, pending)) {
++covered;
}
}
return covered;
}
bool AllowsOverwrite(int64_t key) {
return no_overwrite_ids_.find(key) == no_overwrite_ids_.end();
}
bool Exists(int cf, int64_t key) {
// UNKNOWN_SENTINEL counts as exists. That assures a key for which overwrite
// is disallowed can't be accidentally added a second time, in which case
// SingleDelete wouldn't be able to properly delete the key. It does allow
// the case where a SingleDelete might be added which covers nothing, but
// that's not a correctness issue.
uint32_t expected_value = Value(cf, key).load();
return expected_value != DELETION_SENTINEL;
}
uint32_t GetSeed() const { return seed_; }
void SetShouldStopBgThread() { should_stop_bg_thread_ = true; }
bool ShoudStopBgThread() { return should_stop_bg_thread_; }
void SetBgThreadFinish() { bg_thread_finished_ = true; }
bool BgThreadFinished() const { return bg_thread_finished_; }
bool ShouldVerifyAtBeginning() const {
return expected_mmap_buffer_.get() != nullptr;
}
private:
port::Mutex mu_;
port::CondVar cv_;
const uint32_t seed_;
const int64_t max_key_;
const uint32_t log2_keys_per_lock_;
const int num_threads_;
long num_initialized_;
long num_populated_;
long vote_reopen_;
long num_done_;
bool start_;
bool start_verify_;
bool should_stop_bg_thread_;
bool bg_thread_finished_;
StressTest* stress_test_;
std::atomic<bool> verification_failure_;
// Keys that should not be overwritten
std::unordered_set<size_t> no_overwrite_ids_;
std::atomic<uint32_t>* values_;
std::unique_ptr<std::atomic<uint32_t>[]> values_allocation_;
// Has to make it owned by a smart ptr as port::Mutex is not copyable
// and storing it in the container may require copying depending on the impl.
std::vector<std::vector<std::unique_ptr<port::Mutex> > > key_locks_;
std::unique_ptr<MemoryMappedFileBuffer> expected_mmap_buffer_;
};
const uint32_t SharedState::UNKNOWN_SENTINEL = 0xfffffffe;
const uint32_t SharedState::DELETION_SENTINEL = 0xffffffff;
// Per-thread state for concurrent executions of the same benchmark.
struct ThreadState {
uint32_t tid; // 0..n-1
Random rand; // Has different seeds for different threads
SharedState* shared;
Stats stats;
struct SnapshotState {
const Snapshot* snapshot;
// The cf from which we did a Get at this snapshot
int cf_at;
// The name of the cf at the time that we did a read
std::string cf_at_name;
// The key with which we did a Get at this snapshot
std::string key;
// The status of the Get
Status status;
// The value of the Get
std::string value;
// optional state of all keys in the db
std::vector<bool> *key_vec;
};
std::queue<std::pair<uint64_t, SnapshotState> > snapshot_queue;
ThreadState(uint32_t index, SharedState* _shared)
: tid(index), rand(1000 + index + _shared->GetSeed()), shared(_shared) {}
};
class DbStressListener : public EventListener {
public:
DbStressListener(const std::string& db_name,
const std::vector<DbPath>& db_paths,
const std::vector<ColumnFamilyDescriptor>& column_families)
: db_name_(db_name),
db_paths_(db_paths),
column_families_(column_families),
num_pending_file_creations_(0) {}
virtual ~DbStressListener() {
assert(num_pending_file_creations_ == 0);
}
#ifndef ROCKSDB_LITE
virtual void OnFlushCompleted(DB* /*db*/, const FlushJobInfo& info) override {
assert(IsValidColumnFamilyName(info.cf_name));
VerifyFilePath(info.file_path);
// pretending doing some work here
std::this_thread::sleep_for(
std::chrono::microseconds(Random::GetTLSInstance()->Uniform(5000)));
}
virtual void OnCompactionCompleted(DB* /*db*/,
const CompactionJobInfo& ci) override {
assert(IsValidColumnFamilyName(ci.cf_name));
assert(ci.input_files.size() + ci.output_files.size() > 0U);
for (const auto& file_path : ci.input_files) {
VerifyFilePath(file_path);
}
for (const auto& file_path : ci.output_files) {
VerifyFilePath(file_path);
}
// pretending doing some work here
std::this_thread::sleep_for(
std::chrono::microseconds(Random::GetTLSInstance()->Uniform(5000)));
}
virtual void OnTableFileCreationStarted(
const TableFileCreationBriefInfo& /*info*/) override {
++num_pending_file_creations_;
}
virtual void OnTableFileCreated(const TableFileCreationInfo& info) override {
assert(info.db_name == db_name_);
assert(IsValidColumnFamilyName(info.cf_name));
if (info.file_size) {
VerifyFilePath(info.file_path);
}
assert(info.job_id > 0 || FLAGS_compact_files_one_in > 0);
if (info.status.ok() && info.file_size > 0) {
assert(info.table_properties.data_size > 0 ||
info.table_properties.num_range_deletions > 0);
assert(info.table_properties.raw_key_size > 0);
assert(info.table_properties.num_entries > 0);
}
--num_pending_file_creations_;
}
protected:
bool IsValidColumnFamilyName(const std::string& cf_name) const {
if (cf_name == kDefaultColumnFamilyName) {
return true;
}
// The column family names in the stress tests are numbers.
for (size_t i = 0; i < cf_name.size(); ++i) {
if (cf_name[i] < '0' || cf_name[i] > '9') {
return false;
}
}
return true;
}
void VerifyFileDir(const std::string& file_dir) {
#ifndef NDEBUG
if (db_name_ == file_dir) {
return;
}
for (const auto& db_path : db_paths_) {
if (db_path.path == file_dir) {
return;
}
}
for (auto& cf : column_families_) {
for (const auto& cf_path : cf.options.cf_paths) {
if (cf_path.path == file_dir) {
return;
}
}
}
assert(false);
#else
(void)file_dir;
#endif // !NDEBUG
}
void VerifyFileName(const std::string& file_name) {
#ifndef NDEBUG
uint64_t file_number;
FileType file_type;
bool result = ParseFileName(file_name, &file_number, &file_type);
assert(result);
assert(file_type == kTableFile);
#else
(void)file_name;
#endif // !NDEBUG
}
void VerifyFilePath(const std::string& file_path) {
#ifndef NDEBUG
size_t pos = file_path.find_last_of("/");
if (pos == std::string::npos) {
VerifyFileName(file_path);
} else {
if (pos > 0) {
VerifyFileDir(file_path.substr(0, pos));
}
VerifyFileName(file_path.substr(pos));
}
#else
(void)file_path;
#endif // !NDEBUG
}
#endif // !ROCKSDB_LITE
private:
std::string db_name_;
std::vector<DbPath> db_paths_;
std::vector<ColumnFamilyDescriptor> column_families_;
std::atomic<int> num_pending_file_creations_;
};
} // namespace
class StressTest {
public:
StressTest()
: cache_(NewCache(FLAGS_cache_size)),
compressed_cache_(NewLRUCache(FLAGS_compressed_cache_size)),
filter_policy_(FLAGS_bloom_bits >= 0
? FLAGS_use_block_based_filter
? NewBloomFilterPolicy(FLAGS_bloom_bits, true)
: NewBloomFilterPolicy(FLAGS_bloom_bits, false)
: nullptr),
db_(nullptr),
#ifndef ROCKSDB_LITE
txn_db_(nullptr),
#endif
new_column_family_name_(1),
num_times_reopened_(0),
db_preload_finished_(false) {
if (FLAGS_destroy_db_initially) {
std::vector<std::string> files;
FLAGS_env->GetChildren(FLAGS_db, &files);
for (unsigned int i = 0; i < files.size(); i++) {
if (Slice(files[i]).starts_with("heap-")) {
FLAGS_env->DeleteFile(FLAGS_db + "/" + files[i]);
}
}
DestroyDB(FLAGS_db, Options());
}
}
virtual ~StressTest() {
for (auto cf : column_families_) {
delete cf;
}
column_families_.clear();
delete db_;
}
std::shared_ptr<Cache> NewCache(size_t capacity) {
if (capacity <= 0) {
return nullptr;
}
if (FLAGS_use_clock_cache) {
auto cache = NewClockCache((size_t)capacity);
if (!cache) {
fprintf(stderr, "Clock cache not supported.");
exit(1);
}
return cache;
} else {
return NewLRUCache((size_t)capacity);
}
}
bool BuildOptionsTable() {
if (FLAGS_set_options_one_in <= 0) {
return true;
}
std::unordered_map<std::string, std::vector<std::string> > options_tbl = {
{"write_buffer_size",
{ToString(options_.write_buffer_size),
ToString(options_.write_buffer_size * 2),
ToString(options_.write_buffer_size * 4)}},
{"max_write_buffer_number",
{ToString(options_.max_write_buffer_number),
ToString(options_.max_write_buffer_number * 2),
ToString(options_.max_write_buffer_number * 4)}},
{"arena_block_size",
{
ToString(options_.arena_block_size),
ToString(options_.write_buffer_size / 4),
ToString(options_.write_buffer_size / 8),
}},
{"memtable_huge_page_size", {"0", ToString(2 * 1024 * 1024)}},
{"max_successive_merges", {"0", "2", "4"}},
{"inplace_update_num_locks", {"100", "200", "300"}},
// TODO(ljin): enable test for this option
// {"disable_auto_compactions", {"100", "200", "300"}},
{"soft_rate_limit", {"0", "0.5", "0.9"}},
{"hard_rate_limit", {"0", "1.1", "2.0"}},
{"level0_file_num_compaction_trigger",
{
ToString(options_.level0_file_num_compaction_trigger),
ToString(options_.level0_file_num_compaction_trigger + 2),
ToString(options_.level0_file_num_compaction_trigger + 4),
}},
{"level0_slowdown_writes_trigger",
{
ToString(options_.level0_slowdown_writes_trigger),
ToString(options_.level0_slowdown_writes_trigger + 2),
ToString(options_.level0_slowdown_writes_trigger + 4),
}},
{"level0_stop_writes_trigger",
{
ToString(options_.level0_stop_writes_trigger),
ToString(options_.level0_stop_writes_trigger + 2),
ToString(options_.level0_stop_writes_trigger + 4),
}},
{"max_compaction_bytes",
{
ToString(options_.target_file_size_base * 5),
ToString(options_.target_file_size_base * 15),
ToString(options_.target_file_size_base * 100),
}},
{"target_file_size_base",
{
ToString(options_.target_file_size_base),
ToString(options_.target_file_size_base * 2),
ToString(options_.target_file_size_base * 4),
}},
{"target_file_size_multiplier",
{
ToString(options_.target_file_size_multiplier), "1", "2",
}},
{"max_bytes_for_level_base",
{
ToString(options_.max_bytes_for_level_base / 2),
ToString(options_.max_bytes_for_level_base),
ToString(options_.max_bytes_for_level_base * 2),
}},
{"max_bytes_for_level_multiplier",
{
ToString(options_.max_bytes_for_level_multiplier), "1", "2",
}},
{"max_sequential_skip_in_iterations", {"4", "8", "12"}},
};
options_table_ = std::move(options_tbl);
for (const auto& iter : options_table_) {
options_index_.push_back(iter.first);
}
return true;
}
bool Run() {
uint64_t now = FLAGS_env->NowMicros();
fprintf(stdout, "%s Initializing db_stress\n",
FLAGS_env->TimeToString(now / 1000000).c_str());
PrintEnv();
Open();
BuildOptionsTable();
SharedState shared(this);
if (FLAGS_read_only) {
now = FLAGS_env->NowMicros();
fprintf(stdout, "%s Preloading db with %" PRIu64 " KVs\n",
FLAGS_env->TimeToString(now / 1000000).c_str(), FLAGS_max_key);
PreloadDbAndReopenAsReadOnly(FLAGS_max_key, &shared);
}
uint32_t n = shared.GetNumThreads();
now = FLAGS_env->NowMicros();
fprintf(stdout, "%s Initializing worker threads\n",
FLAGS_env->TimeToString(now / 1000000).c_str());
std::vector<ThreadState*> threads(n);
for (uint32_t i = 0; i < n; i++) {
threads[i] = new ThreadState(i, &shared);
FLAGS_env->StartThread(ThreadBody, threads[i]);
}
ThreadState bg_thread(0, &shared);
if (FLAGS_compaction_thread_pool_adjust_interval > 0) {
FLAGS_env->StartThread(PoolSizeChangeThread, &bg_thread);
}
// Each thread goes through the following states:
// initializing -> wait for others to init -> read/populate/depopulate
// wait for others to operate -> verify -> done
{
MutexLock l(shared.GetMutex());
while (!shared.AllInitialized()) {
shared.GetCondVar()->Wait();
}
if (shared.ShouldVerifyAtBeginning()) {
if (shared.HasVerificationFailedYet()) {
printf("Crash-recovery verification failed :(\n");
} else {
printf("Crash-recovery verification passed :)\n");
}
}
now = FLAGS_env->NowMicros();
fprintf(stdout, "%s Starting database operations\n",
FLAGS_env->TimeToString(now/1000000).c_str());
shared.SetStart();
shared.GetCondVar()->SignalAll();
while (!shared.AllOperated()) {
shared.GetCondVar()->Wait();
}
now = FLAGS_env->NowMicros();
if (FLAGS_test_batches_snapshots) {
fprintf(stdout, "%s Limited verification already done during gets\n",
FLAGS_env->TimeToString((uint64_t) now/1000000).c_str());
} else {
fprintf(stdout, "%s Starting verification\n",
FLAGS_env->TimeToString((uint64_t) now/1000000).c_str());
}
shared.SetStartVerify();
shared.GetCondVar()->SignalAll();
while (!shared.AllDone()) {
shared.GetCondVar()->Wait();
}
}
for (unsigned int i = 1; i < n; i++) {
threads[0]->stats.Merge(threads[i]->stats);
}
threads[0]->stats.Report("Stress Test");
for (unsigned int i = 0; i < n; i++) {
delete threads[i];
threads[i] = nullptr;
}
now = FLAGS_env->NowMicros();
if (!FLAGS_test_batches_snapshots && !shared.HasVerificationFailedYet()) {
fprintf(stdout, "%s Verification successful\n",
FLAGS_env->TimeToString(now/1000000).c_str());
}
PrintStatistics();
if (FLAGS_compaction_thread_pool_adjust_interval > 0) {
MutexLock l(shared.GetMutex());
shared.SetShouldStopBgThread();
while (!shared.BgThreadFinished()) {
shared.GetCondVar()->Wait();
}
}
if (shared.HasVerificationFailedYet()) {
printf("Verification failed :(\n");
return false;
}
return true;
}
protected:
static void ThreadBody(void* v) {
ThreadState* thread = reinterpret_cast<ThreadState*>(v);
SharedState* shared = thread->shared;
if (shared->ShouldVerifyAtBeginning()) {
thread->shared->GetStressTest()->VerifyDb(thread);
}
{
MutexLock l(shared->GetMutex());
shared->IncInitialized();
if (shared->AllInitialized()) {
shared->GetCondVar()->SignalAll();
}
while (!shared->Started()) {
shared->GetCondVar()->Wait();
}
}
thread->shared->GetStressTest()->OperateDb(thread);
{
MutexLock l(shared->GetMutex());
shared->IncOperated();
if (shared->AllOperated()) {
shared->GetCondVar()->SignalAll();
}
while (!shared->VerifyStarted()) {
shared->GetCondVar()->Wait();
}
}
thread->shared->GetStressTest()->VerifyDb(thread);
{
MutexLock l(shared->GetMutex());
shared->IncDone();
if (shared->AllDone()) {
shared->GetCondVar()->SignalAll();
}
}
}
static void PoolSizeChangeThread(void* v) {
assert(FLAGS_compaction_thread_pool_adjust_interval > 0);
ThreadState* thread = reinterpret_cast<ThreadState*>(v);
SharedState* shared = thread->shared;
while (true) {
{
MutexLock l(shared->GetMutex());
if (shared->ShoudStopBgThread()) {
shared->SetBgThreadFinish();
shared->GetCondVar()->SignalAll();
return;
}
}
auto thread_pool_size_base = FLAGS_max_background_compactions;
auto thread_pool_size_var = FLAGS_compaction_thread_pool_variations;
int new_thread_pool_size =
thread_pool_size_base - thread_pool_size_var +
thread->rand.Next() % (thread_pool_size_var * 2 + 1);
if (new_thread_pool_size < 1) {
new_thread_pool_size = 1;
}
FLAGS_env->SetBackgroundThreads(new_thread_pool_size);
// Sleep up to 3 seconds
FLAGS_env->SleepForMicroseconds(
thread->rand.Next() % FLAGS_compaction_thread_pool_adjust_interval *
1000 +
1);
}
}
static void PrintKeyValue(int cf, uint64_t key, const char* value,
size_t sz) {
if (!FLAGS_verbose) {
return;
}
std::string tmp;
tmp.reserve(sz * 2 + 16);
char buf[4];
for (size_t i = 0; i < sz; i++) {
snprintf(buf, 4, "%X", value[i]);
tmp.append(buf);
}
fprintf(stdout, "[CF %d] %" PRIi64 " == > (%" ROCKSDB_PRIszt ") %s\n", cf,
key, sz, tmp.c_str());
}
static int64_t GenerateOneKey(ThreadState* thread, uint64_t iteration) {
const double completed_ratio =
static_cast<double>(iteration) / FLAGS_ops_per_thread;
const int64_t base_key = static_cast<int64_t>(
completed_ratio * (FLAGS_max_key - FLAGS_active_width));
return base_key + thread->rand.Next() % FLAGS_active_width;
}
static size_t GenerateValue(uint32_t rand, char *v, size_t max_sz) {
size_t value_sz =
((rand % kRandomValueMaxFactor) + 1) * FLAGS_value_size_mult;
assert(value_sz <= max_sz && value_sz >= sizeof(uint32_t));
(void) max_sz;
*((uint32_t*)v) = rand;
for (size_t i=sizeof(uint32_t); i < value_sz; i++) {
v[i] = (char)(rand ^ i);
}
v[value_sz] = '\0';
return value_sz; // the size of the value set.
}
Status AssertSame(DB* db, ColumnFamilyHandle* cf,
ThreadState::SnapshotState& snap_state) {
Status s;
if (cf->GetName() != snap_state.cf_at_name) {
return s;
}
ReadOptions ropt;
ropt.snapshot = snap_state.snapshot;
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 " +
ToString(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();
}
// Currently PreloadDb has to be single-threaded.
void PreloadDbAndReopenAsReadOnly(int64_t number_of_keys,
SharedState* shared) {
WriteOptions write_opts;
write_opts.disableWAL = FLAGS_disable_wal;
if (FLAGS_sync) {
write_opts.sync = true;
}
char value[100];
int cf_idx = 0;
Status s;
for (auto cfh : column_families_) {
for (int64_t k = 0; k != number_of_keys; ++k) {
std::string key_str = Key(k);
Slice key = key_str;
size_t sz = GenerateValue(0 /*value_base*/, value, sizeof(value));
Slice v(value, sz);
shared->Put(cf_idx, k, 0, true /* pending */);
if (FLAGS_use_merge) {
if (!FLAGS_use_txn) {
s = db_->Merge(write_opts, cfh, key, v);
} else {
#ifndef ROCKSDB_LITE
Transaction* txn;
s = NewTxn(write_opts, &txn);
if (s.ok()) {
s = txn->Merge(cfh, key, v);
if (s.ok()) {
s = CommitTxn(txn);
}
}
#endif
}
} else {
if (!FLAGS_use_txn) {
s = db_->Put(write_opts, cfh, key, v);
} else {
#ifndef ROCKSDB_LITE
Transaction* txn;
s = NewTxn(write_opts, &txn);
if (s.ok()) {
s = txn->Put(cfh, key, v);
if (s.ok()) {
s = CommitTxn(txn);
}
}
#endif
}
}
shared->Put(cf_idx, k, 0, 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;
#ifndef ROCKSDB_LITE
txn_db_ = nullptr;
#endif
db_preload_finished_.store(true);
auto now = FLAGS_env->NowMicros();
fprintf(stdout, "%s Reopening database in read-only\n",
FLAGS_env->TimeToString(now / 1000000).c_str());
// Reopen as read-only, can ignore all options related to updates
Open();
} else {
fprintf(stderr, "Failed to preload db");
exit(1);
}
}
Status 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 == "soft_rate_limit" || name == "hard_rate_limit") {
opts["soft_rate_limit"] = options_table_["soft_rate_limit"][value_idx];
opts["hard_rate_limit"] = options_table_["hard_rate_limit"][value_idx];
} else 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);
}
#ifndef ROCKSDB_LITE
Status NewTxn(WriteOptions& write_opts, Transaction** txn) {
if (!FLAGS_use_txn) {
return Status::InvalidArgument("NewTxn when FLAGS_use_txn is not set");
}
static std::atomic<uint64_t> txn_id = {0};
TransactionOptions txn_options;
*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 CommitTxn(Transaction* txn) {
if (!FLAGS_use_txn) {
return Status::InvalidArgument("CommitTxn when FLAGS_use_txn is not set");
}
Status s = txn->Prepare();
if (s.ok()) {
s = txn->Commit();
}
delete txn;
return s;
}
#endif
virtual void OperateDb(ThreadState* thread) {
ReadOptions read_opts(FLAGS_verify_checksum, true);
WriteOptions write_opts;
auto shared = thread->shared;
char value[100];
std::string from_db;
if (FLAGS_sync) {
write_opts.sync = true;
}
write_opts.disableWAL = FLAGS_disable_wal;
const int prefixBound = (int)FLAGS_readpercent + (int)FLAGS_prefixpercent;
const int writeBound = prefixBound + (int)FLAGS_writepercent;
const int delBound = writeBound + (int)FLAGS_delpercent;
const int delRangeBound = delBound + (int)FLAGS_delrangepercent;
thread->stats.Start();
for (uint64_t i = 0; i < FLAGS_ops_per_thread; i++) {
if (thread->shared->HasVerificationFailedYet()) {
break;
}
if (i != 0 && (i % (FLAGS_ops_per_thread / (FLAGS_reopen + 1))) == 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->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();
}
}
// Change Options
if (FLAGS_set_options_one_in > 0 &&
thread->rand.OneIn(FLAGS_set_options_one_in)) {
SetOptions(thread);
}
if (FLAGS_set_in_place_one_in > 0 &&
thread->rand.OneIn(FLAGS_set_in_place_one_in)) {
options_.inplace_update_support ^= options_.inplace_update_support;
}
MaybeClearOneColumnFamily(thread);
#ifndef ROCKSDB_LITE
if (FLAGS_compact_files_one_in > 0 &&
thread->rand.Uniform(FLAGS_compact_files_one_in) == 0) {
auto* random_cf =
column_families_[thread->rand.Next() % FLAGS_column_families];
rocksdb::ColumnFamilyMetaData cf_meta_data;
db_->GetColumnFamilyMetaData(random_cf, &cf_meta_data);
// 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(), random_cf, 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;
}
}
}
#endif // !ROCKSDB_LITE
int64_t rand_key = GenerateOneKey(thread, i);
int rand_column_family = thread->rand.Next() % FLAGS_column_families;
std::string keystr = Key(rand_key);
Slice key = keystr;
std::unique_ptr<MutexLock> lock;
if (ShouldAcquireMutexOnKey()) {
lock.reset(new MutexLock(
shared->GetMutexForKey(rand_column_family, rand_key)));
}
auto column_family = column_families_[rand_column_family];
if (FLAGS_compact_range_one_in > 0 &&
thread->rand.Uniform(FLAGS_compact_range_one_in) == 0) {
int64_t end_key_num;
if (port::kMaxInt64 - rand_key < FLAGS_compact_range_width) {
end_key_num = port::kMaxInt64;
} 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);
Status status = db_->CompactRange(cro, column_family, &key, &end_key);
if (!status.ok()) {
printf("Unable to perform CompactRange(): %s\n",
status.ToString().c_str());
}
}
std::vector<int> rand_column_families =
GenerateColumnFamilies(FLAGS_column_families, rand_column_family);
if (FLAGS_flush_one_in > 0 &&
thread->rand.Uniform(FLAGS_flush_one_in) == 0) {
FlushOptions flush_opts;
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]); });
Status status = db_->Flush(flush_opts, cfhs);
if (!status.ok()) {
fprintf(stdout, "Unable to perform Flush(): %s\n",
status.ToString().c_str());
}
}
std::vector<int64_t> rand_keys = GenerateKeys(rand_key);
if (FLAGS_ingest_external_file_one_in > 0 &&
thread->rand.Uniform(FLAGS_ingest_external_file_one_in) == 0) {
TestIngestExternalFile(thread, rand_column_families, rand_keys, lock);
}
if (FLAGS_backup_one_in > 0 &&
thread->rand.Uniform(FLAGS_backup_one_in) == 0) {
Status s = TestBackupRestore(thread, rand_column_families, rand_keys);
if (!s.ok()) {
VerificationAbort(shared, "Backup/restore gave inconsistent state",
s);
}
}
if (FLAGS_checkpoint_one_in > 0 &&
thread->rand.Uniform(FLAGS_checkpoint_one_in) == 0) {
Status s = TestCheckpoint(thread, rand_column_families, rand_keys);
if (!s.ok()) {
VerificationAbort(shared, "Checkpoint gave inconsistent state", s);
}
}
if (FLAGS_acquire_snapshot_one_in > 0 &&
thread->rand.Uniform(FLAGS_acquire_snapshot_one_in) == 0) {
auto snapshot = db_->GetSnapshot();
ReadOptions ropt;
ropt.snapshot = snapshot;
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};
thread->snapshot_queue.emplace(
std::min(FLAGS_ops_per_thread - 1, i + FLAGS_snapshot_hold_ops),
snap_state);
}
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);
if (!s.ok()) {
VerificationAbort(shared, "Snapshot gave inconsistent state", s);
}
db_->ReleaseSnapshot(snap_state.snapshot);
delete snap_state.key_vec;
thread->snapshot_queue.pop();
}
int prob_op = thread->rand.Uniform(100);
if (prob_op >= 0 && prob_op < (int)FLAGS_readpercent) {
// OPERATION read
TestGet(thread, read_opts, rand_column_families, rand_keys);
} else if ((int)FLAGS_readpercent <= prob_op && prob_op < prefixBound) {
// 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 (prefixBound <= prob_op && prob_op < writeBound) {
// OPERATION write
TestPut(thread, write_opts, read_opts, rand_column_families, rand_keys,
value, lock);
} else if (writeBound <= prob_op && prob_op < delBound) {
// OPERATION delete
TestDelete(thread, write_opts, rand_column_families, rand_keys, lock);
} else if (delBound <= prob_op && prob_op < delRangeBound) {
// OPERATION delete range
TestDeleteRange(thread, write_opts, rand_column_families, rand_keys,
lock);
} else {
// OPERATION iterate
TestIterate(thread, read_opts, rand_column_families, rand_keys);
}
thread->stats.FinishedSingleOp();
}
thread->stats.Stop();
}
virtual void VerifyDb(ThreadState* thread) const = 0;
virtual void MaybeClearOneColumnFamily(ThreadState* /* thread */) {}
virtual bool ShouldAcquireMutexOnKey() const { return false; }
virtual std::vector<int> GenerateColumnFamilies(
const int /* num_column_families */, int rand_column_family) const {
return {rand_column_family};
}
virtual std::vector<int64_t> GenerateKeys(int64_t rand_key) const {
return {rand_key};
}
virtual Status TestGet(ThreadState* thread,
const ReadOptions& read_opts,
const std::vector<int>& rand_column_families,
const std::vector<int64_t>& rand_keys) = 0;
virtual Status TestPrefixScan(ThreadState* thread,
const ReadOptions& read_opts,
const std::vector<int>& rand_column_families,
const std::vector<int64_t>& rand_keys) = 0;
virtual Status TestPut(ThreadState* thread,
WriteOptions& write_opts, const ReadOptions& read_opts,
const std::vector<int>& cf_ids, const std::vector<int64_t>& keys,
char (&value)[100], std::unique_ptr<MutexLock>& lock) = 0;
virtual Status TestDelete(ThreadState* thread, WriteOptions& write_opts,
const std::vector<int>& rand_column_families,
const std::vector<int64_t>& rand_keys,
std::unique_ptr<MutexLock>& lock) = 0;
virtual Status TestDeleteRange(ThreadState* thread,
WriteOptions& write_opts,
const std::vector<int>& rand_column_families,
const std::vector<int64_t>& rand_keys,
std::unique_ptr<MutexLock>& lock) = 0;
virtual void TestIngestExternalFile(
ThreadState* thread, const std::vector<int>& rand_column_families,
const std::vector<int64_t>& rand_keys,
std::unique_ptr<MutexLock>& lock) = 0;
// Given a key K, this creates an iterator which scans to K and then
// does a random sequence of Next/Prev operations.
virtual Status TestIterate(ThreadState* thread,
const ReadOptions& read_opts,
const std::vector<int>& rand_column_families,
const std::vector<int64_t>& rand_keys) {
Status s;
const Snapshot* snapshot = db_->GetSnapshot();
ReadOptions readoptionscopy = read_opts;
readoptionscopy.snapshot = snapshot;
std::string upper_bound_str;
Slice upper_bound;
if (thread->rand.OneIn(16)) {
// in 1/16 chance, set a iterator upper bound
int64_t rand_upper_key = GenerateOneKey(thread, FLAGS_ops_per_thread);
upper_bound_str = Key(rand_upper_key);
upper_bound = Slice(upper_bound_str);
// uppder_bound can be smaller than seek key, but the query itself
// should not crash either.
readoptionscopy.iterate_upper_bound = &upper_bound;
}
std::string lower_bound_str;
Slice lower_bound;
if (thread->rand.OneIn(16)) {
// in 1/16 chance, set a iterator lower bound
int64_t rand_lower_key = GenerateOneKey(thread, FLAGS_ops_per_thread);
lower_bound_str = Key(rand_lower_key);
lower_bound = Slice(lower_bound_str);
// uppder_bound can be smaller than seek key, but the query itself
// should not crash either.
readoptionscopy.iterate_lower_bound = &lower_bound;
}
auto cfh = column_families_[rand_column_families[0]];
std::unique_ptr<Iterator> iter(db_->NewIterator(readoptionscopy, cfh));
std::string key_str = Key(rand_keys[0]);
Slice key = key_str;
iter->Seek(key);
for (uint64_t i = 0; i < FLAGS_num_iterations && iter->Valid(); i++) {
if (thread->rand.OneIn(2)) {
iter->Next();
} else {
iter->Prev();
}
}
if (s.ok()) {
thread->stats.AddIterations(1);
} else {
thread->stats.AddErrors(1);
}
db_->ReleaseSnapshot(snapshot);
return s;
}
#ifdef ROCKSDB_LITE
virtual Status TestBackupRestore(
ThreadState* /* thread */,
const std::vector<int>& /* rand_column_families */,
const std::vector<int64_t>& /* rand_keys */) {
assert(false);
fprintf(stderr,
"RocksDB lite does not support "
"TestBackupRestore\n");
std::terminate();
}
virtual Status TestCheckpoint(
ThreadState* /* thread */,
const std::vector<int>& /* rand_column_families */,
const std::vector<int64_t>& /* rand_keys */) {
assert(false);
fprintf(stderr,
"RocksDB lite does not support "
"TestCheckpoint\n");
std::terminate();
}
#else // ROCKSDB_LITE
virtual Status TestBackupRestore(ThreadState* thread,
const std::vector<int>& rand_column_families,
const std::vector<int64_t>& rand_keys) {
// 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.
assert(rand_column_families.size() == rand_keys.size());
std::string backup_dir = FLAGS_db + "/.backup" + ToString(thread->tid);
std::string restore_dir = FLAGS_db + "/.restore" + ToString(thread->tid);
BackupableDBOptions backup_opts(backup_dir);
BackupEngine* backup_engine = nullptr;
Status s = BackupEngine::Open(FLAGS_env, backup_opts, &backup_engine);
if (s.ok()) {
s = backup_engine->CreateNewBackup(db_);
}
if (s.ok()) {
delete backup_engine;
backup_engine = nullptr;
s = BackupEngine::Open(FLAGS_env, backup_opts, &backup_engine);
}
if (s.ok()) {
s = backup_engine->RestoreDBFromLatestBackup(restore_dir /* db_dir */,
restore_dir /* wal_dir */);
}
if (s.ok()) {
s = backup_engine->PurgeOldBackups(0 /* num_backups_to_keep */);
}
DB* restored_db = nullptr;
std::vector<ColumnFamilyHandle*> restored_cf_handles;
if (s.ok()) {
Options restore_options(options_);
restore_options.listeners.clear();
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));
}
s = DB::Open(DBOptions(restore_options), restore_dir, cf_descriptors,
&restored_cf_handles, &restored_db);
}
// for simplicity, currently only verifies existence/non-existence of a few
// keys
for (size_t i = 0; s.ok() && i < rand_column_families.size(); ++i) {
std::string key_str = Key(rand_keys[i]);
Slice key = key_str;
std::string restored_value;
Status get_status = restored_db->Get(
ReadOptions(), restored_cf_handles[rand_column_families[i]], key,
&restored_value);
bool exists =
thread->shared->Exists(rand_column_families[i], rand_keys[i]);
if (get_status.ok()) {
if (!exists) {
s = Status::Corruption(
"key exists in restore but not in original db");
}
} else if (get_status.IsNotFound()) {
if (exists) {
s = Status::Corruption(
"key exists in original db but not in restore");
}
} else {
s = get_status;
}
}
if (backup_engine != nullptr) {
delete backup_engine;
backup_engine = nullptr;
}
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()) {
printf("A backup/restore operation failed with: %s\n",
s.ToString().c_str());
}
return s;
}
virtual Status TestCheckpoint(ThreadState* thread,
const std::vector<int>& rand_column_families,
const std::vector<int64_t>& rand_keys) {
// 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.
assert(rand_column_families.size() == rand_keys.size());
std::string checkpoint_dir =
FLAGS_db + "/.checkpoint" + ToString(thread->tid);
DestroyDB(checkpoint_dir, Options());
Checkpoint* checkpoint = nullptr;
Status s = Checkpoint::Create(db_, &checkpoint);
if (s.ok()) {
s = checkpoint->CreateCheckpoint(checkpoint_dir);
}
std::vector<ColumnFamilyHandle*> cf_handles;
DB* checkpoint_db = nullptr;
if (s.ok()) {
delete checkpoint;
checkpoint = nullptr;
Options options(options_);
options.listeners.clear();
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_`.
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) {
for (size_t i = 0; s.ok() && i < rand_column_families.size(); ++i) {
std::string key_str = Key(rand_keys[i]);
Slice key = key_str;
std::string value;
Status get_status = checkpoint_db->Get(
ReadOptions(), cf_handles[rand_column_families[i]], key, &value);
bool exists =
thread->shared->Exists(rand_column_families[i], rand_keys[i]);
if (get_status.ok()) {
if (!exists) {
s = Status::Corruption(
"key exists in checkpoint but not in original db");
}
} else if (get_status.IsNotFound()) {
if (exists) {
s = Status::Corruption(
"key exists in original db but not in checkpoint");
}
} else {
s = get_status;
}
}
for (auto cfh : cf_handles) {
delete cfh;
}
cf_handles.clear();
delete checkpoint_db;
checkpoint_db = nullptr;
}
DestroyDB(checkpoint_dir, Options());
if (!s.ok()) {
fprintf(stderr, "A checkpoint operation failed with: %s\n",
s.ToString().c_str());
}
return s;
}
#endif // ROCKSDB_LITE
void VerificationAbort(SharedState* shared, std::string msg, Status s) const {
printf("Verification failed: %s. Status is %s\n", msg.c_str(),
s.ToString().c_str());
shared->SetVerificationFailure();
}
void VerificationAbort(SharedState* shared, std::string msg, int cf,
int64_t key) const {
printf("Verification failed for column family %d key %" PRIi64 ": %s\n", cf, key,
msg.c_str());
shared->SetVerificationFailure();
}
void 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");
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, "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 = NumberToString(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, "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(FLAGS_compression_type_e);
fprintf(stdout, "Compression : %s\n", compression.c_str());
std::string checksum = ChecksumTypeToString(FLAGS_checksum_type_e);
fprintf(stdout, "Checksum type : %s\n", checksum.c_str());
fprintf(stdout, "Max subcompactions : %" PRIu64 "\n",
FLAGS_subcompactions);
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);
fprintf(stdout, "Test kill odd : %d\n", rocksdb_kill_odds);
if (!rocksdb_kill_prefix_blacklist.empty()) {
fprintf(stdout, "Skipping kill points prefixes:\n");
for (auto& p : rocksdb_kill_prefix_blacklist) {
fprintf(stdout, " %s\n", p.c_str());
}
}
fprintf(stdout, "------------------------------------------------\n");
}
void Open() {
assert(db_ == nullptr);
#ifndef ROCKSDB_LITE
assert(txn_db_ == nullptr);
#endif
if (FLAGS_options_file.empty()) {
BlockBasedTableOptions block_based_options;
block_based_options.block_cache = cache_;
block_based_options.block_cache_compressed = compressed_cache_;
block_based_options.checksum = FLAGS_checksum_type_e;
block_based_options.block_size = FLAGS_block_size;
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_;
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_.memtable_prefix_bloom_size_ratio =
FLAGS_memtable_prefix_bloom_size_ratio;
options_.max_background_compactions = FLAGS_max_background_compactions;
options_.max_background_flushes = FLAGS_max_background_flushes;
options_.compaction_style =
static_cast<rocksdb::CompactionStyle>(FLAGS_compaction_style);
options_.prefix_extractor.reset(
NewFixedPrefixTransform(FLAGS_prefix_size));
options_.max_open_files = FLAGS_open_files;
options_.statistics = dbstats;
options_.env = FLAGS_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_.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 = FLAGS_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_.create_if_missing = true;
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_.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;
} else {
#ifdef ROCKSDB_LITE
fprintf(stderr, "--options_file not supported in lite mode\n");
exit(1);
#else
DBOptions db_options;
std::vector<ColumnFamilyDescriptor> cf_descriptors;
Status s = LoadOptionsFromFile(FLAGS_options_file, Env::Default(),
&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);
}
options_ = Options(db_options, cf_descriptors[0].options);
#endif // ROCKSDB_LITE
}
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 (FLAGS_rate_limit_bg_reads) {
options_.new_table_reader_for_compaction_inputs = true;
}
}
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");
}
switch (FLAGS_rep_factory) {
case kSkipList:
// no need to do anything
break;
#ifndef ROCKSDB_LITE
case kHashSkipList:
options_.memtable_factory.reset(NewHashSkipListRepFactory(10000));
break;
case kVectorRep:
options_.memtable_factory.reset(new VectorRepFactory());
break;
#else
default:
fprintf(stderr,
"RocksdbLite only supports skip list mem table. Skip "
"--rep_factory\n");
#endif // ROCKSDB_LITE
}
if (FLAGS_use_full_merge_v1) {
options_.merge_operator = MergeOperators::CreateDeprecatedPutOperator();
} else {
options_.merge_operator = MergeOperators::CreatePutOperator();
}
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");
printf("Expected: {");
for (auto cf : sorted_cfn) {
printf("%s ", cf.c_str());
}
printf("}\n");
printf("Existing: {");
for (auto cf : existing_column_families) {
printf("%s ", cf.c_str());
}
printf("}\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 = ToString(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));
options_.create_missing_column_families = true;
if (!FLAGS_use_txn) {
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_);
}
} else {
#ifndef ROCKSDB_LITE
TransactionDBOptions txn_db_options;
// For the moment it is sufficient to test WRITE_PREPARED policy
txn_db_options.write_policy = TxnDBWritePolicy::WRITE_PREPARED;
s = TransactionDB::Open(options_, txn_db_options, FLAGS_db,
cf_descriptors, &column_families_, &txn_db_);
db_ = txn_db_;
// after a crash, rollback to commit recovered transactions
std::vector<Transaction*> trans;
txn_db_->GetAllPreparedTransactions(&trans);
Random rand(static_cast<uint32_t>(FLAGS_seed));
for (auto txn : trans) {
if (rand.OneIn(2)) {
s = txn->Commit();
assert(s.ok());
} else {
s = txn->Rollback();
assert(s.ok());
}
delete txn;
}
trans.clear();
txn_db_->GetAllPreparedTransactions(&trans);
assert(trans.size() == 0);
#endif
}
assert(!s.ok() || column_families_.size() ==
static_cast<size_t>(FLAGS_column_families));
} else {
#ifndef ROCKSDB_LITE
DBWithTTL* db_with_ttl;
s = DBWithTTL::Open(options_, FLAGS_db, &db_with_ttl, FLAGS_ttl);
db_ = db_with_ttl;
#else
fprintf(stderr, "TTL is not supported in RocksDBLite\n");
exit(1);
#endif
}
if (!s.ok()) {
fprintf(stderr, "open error: %s\n", s.ToString().c_str());
exit(1);
}
}
void Reopen() {
for (auto cf : column_families_) {
delete cf;
}
column_families_.clear();
delete db_;
db_ = nullptr;
#ifndef ROCKSDB_LITE
txn_db_ = nullptr;
#endif
num_times_reopened_++;
auto now = FLAGS_env->NowMicros();
fprintf(stdout, "%s Reopening database for the %dth time\n",
FLAGS_env->TimeToString(now/1000000).c_str(),
num_times_reopened_);
Open();
}
void PrintStatistics() {
if (dbstats) {
fprintf(stdout, "STATISTICS:\n%s\n", dbstats->ToString().c_str());
}
}
std::shared_ptr<Cache> cache_;
std::shared_ptr<Cache> compressed_cache_;
std::shared_ptr<const FilterPolicy> filter_policy_;
DB* db_;
#ifndef ROCKSDB_LITE
TransactionDB* txn_db_;
#endif
Options options_;
std::vector<ColumnFamilyHandle*> column_families_;
std::vector<std::string> column_family_names_;
std::atomic<int> new_column_family_name_;
int num_times_reopened_;
std::unordered_map<std::string, std::vector<std::string>> options_table_;
std::vector<std::string> options_index_;
std::atomic<bool> db_preload_finished_;
};
class NonBatchedOpsStressTest : public StressTest {
public:
NonBatchedOpsStressTest() {}
virtual ~NonBatchedOpsStressTest() {}
virtual void VerifyDb(ThreadState* thread) const {
ReadOptions options(FLAGS_verify_checksum, true);
auto shared = thread->shared;
const int64_t max_key = shared->GetMaxKey();
const int64_t keys_per_thread = max_key / shared->GetNumThreads();
int64_t start = keys_per_thread * thread->tid;
int64_t end = start + keys_per_thread;
if (thread->tid == shared->GetNumThreads() - 1) {
end = max_key;
}
for (size_t cf = 0; cf < column_families_.size(); ++cf) {
if (thread->shared->HasVerificationFailedYet()) {
break;
}
if (!thread->rand.OneIn(2)) {
// Use iterator to verify this range
std::unique_ptr<Iterator> iter(
db_->NewIterator(options, column_families_[cf]));
iter->Seek(Key(start));
for (auto i = start; i < end; i++) {
if (thread->shared->HasVerificationFailedYet()) {
break;
}
// TODO(ljin): update "long" to uint64_t
// Reseek when the prefix changes
if (i % (static_cast<int64_t>(1) << 8 * (8 - FLAGS_prefix_size)) ==
0) {
iter->Seek(Key(i));
}
std::string from_db;
std::string keystr = Key(i);
Slice k = keystr;
Status s = iter->status();
if (iter->Valid()) {
if (iter->key().compare(k) > 0) {
s = Status::NotFound(Slice());
} else if (iter->key().compare(k) == 0) {
from_db = iter->value().ToString();
iter->Next();
} else if (iter->key().compare(k) < 0) {
VerificationAbort(shared, "An out of range key was found",
static_cast<int>(cf), i);
}
} else {
// The iterator found no value for the key in question, so do not
// move to the next item in the iterator
s = Status::NotFound(Slice());
}
VerifyValue(static_cast<int>(cf), i, options, shared, from_db, s,
true);
if (from_db.length()) {
PrintKeyValue(static_cast<int>(cf), static_cast<uint32_t>(i),
from_db.data(), from_db.length());
}
}
} else {
// Use Get to verify this range
for (auto i = start; i < end; i++) {
if (thread->shared->HasVerificationFailedYet()) {
break;
}
std::string from_db;
std::string keystr = Key(i);
Slice k = keystr;
Status s = db_->Get(options, column_families_[cf], k, &from_db);
VerifyValue(static_cast<int>(cf), i, options, shared, from_db, s,
true);
if (from_db.length()) {
PrintKeyValue(static_cast<int>(cf), static_cast<uint32_t>(i),
from_db.data(), from_db.length());
}
}
}
}
}
virtual void MaybeClearOneColumnFamily(ThreadState* thread) {
if (FLAGS_clear_column_family_one_in != 0 && FLAGS_column_families > 1) {
if (thread->rand.OneIn(FLAGS_clear_column_family_one_in)) {
// drop column family and then create it again (can't drop default)
int cf = thread->rand.Next() % (FLAGS_column_families - 1) + 1;
std::string new_name =
ToString(new_column_family_name_.fetch_add(1));
{
MutexLock l(thread->shared->GetMutex());
fprintf(
stdout,
"[CF %d] Dropping and recreating column family. new name: %s\n",
cf, new_name.c_str());
}
thread->shared->LockColumnFamily(cf);
Status s = db_->DropColumnFamily(column_families_[cf]);
delete column_families_[cf];
if (!s.ok()) {
fprintf(stderr, "dropping column family error: %s\n",
s.ToString().c_str());
std::terminate();
}
s = db_->CreateColumnFamily(ColumnFamilyOptions(options_), new_name,
&column_families_[cf]);
column_family_names_[cf] = new_name;
thread->shared->ClearColumnFamily(cf);
if (!s.ok()) {
fprintf(stderr, "creating column family error: %s\n",
s.ToString().c_str());
std::terminate();
}
thread->shared->UnlockColumnFamily(cf);
}
}
}
virtual bool ShouldAcquireMutexOnKey() const { return true; }
virtual Status TestGet(ThreadState* thread,
const ReadOptions& read_opts,
const std::vector<int>& rand_column_families,
const std::vector<int64_t>& rand_keys) {
auto cfh = column_families_[rand_column_families[0]];
std::string key_str = Key(rand_keys[0]);
Slice key = key_str;
std::string from_db;
Status s = db_->Get(read_opts, cfh, key, &from_db);
if (s.ok()) {
// found case
thread->stats.AddGets(1, 1);
} else if (s.IsNotFound()) {
// not found case
thread->stats.AddGets(1, 0);
} else {
// errors case
thread->stats.AddErrors(1);
}
return s;
}
virtual Status TestPrefixScan(ThreadState* thread,
const ReadOptions& read_opts,
const std::vector<int>& rand_column_families,
const std::vector<int64_t>& rand_keys) {
auto cfh = column_families_[rand_column_families[0]];
std::string key_str = Key(rand_keys[0]);
Slice key = key_str;
Slice prefix = Slice(key.data(), FLAGS_prefix_size);
std::string upper_bound;
Slice ub_slice;
ReadOptions ro_copy = read_opts;
if (thread->rand.OneIn(2) && GetNextPrefix(prefix, &upper_bound)) {
// For half of the time, set the upper bound to the next prefix
ub_slice = Slice(upper_bound);
ro_copy.iterate_upper_bound = &ub_slice;
}
Iterator* iter = db_->NewIterator(ro_copy, cfh);
long count = 0;
for (iter->Seek(prefix);
iter->Valid() && iter->key().starts_with(prefix); iter->Next()) {
++count;
}
assert(count <= (static_cast<long>(1) << ((8 - FLAGS_prefix_size) * 8)));
Status s = iter->status();
if (iter->status().ok()) {
thread->stats.AddPrefixes(1, count);
} else {
thread->stats.AddErrors(1);
}
delete iter;
return s;
}
virtual Status TestPut(ThreadState* thread,
WriteOptions& write_opts, const ReadOptions& read_opts,
const std::vector<int>& rand_column_families,
const std::vector<int64_t>& rand_keys,
char (&value) [100], std::unique_ptr<MutexLock>& lock) {
auto shared = thread->shared;
int64_t max_key = shared->GetMaxKey();
int64_t rand_key = rand_keys[0];
int rand_column_family = rand_column_families[0];
while (!shared->AllowsOverwrite(rand_key) &&
(FLAGS_use_merge || shared->Exists(rand_column_family, rand_key))) {
lock.reset();
rand_key = thread->rand.Next() % max_key;
rand_column_family = thread->rand.Next() % FLAGS_column_families;
lock.reset(new MutexLock(
shared->GetMutexForKey(rand_column_family, rand_key)));
}
std::string key_str = Key(rand_key);
Slice key = key_str;
ColumnFamilyHandle* cfh = column_families_[rand_column_family];
if (FLAGS_verify_before_write) {
std::string key_str2 = Key(rand_key);
Slice k = key_str2;
std::string from_db;
Status s = db_->Get(read_opts, cfh, k, &from_db);
if (!VerifyValue(rand_column_family, rand_key, read_opts, shared,
from_db, s, true)) {
return s;
}
}
uint32_t value_base = thread->rand.Next() % shared->UNKNOWN_SENTINEL;
size_t sz = GenerateValue(value_base, value, sizeof(value));
Slice v(value, sz);
shared->Put(rand_column_family, rand_key, value_base, true /* pending */);
Status s;
if (FLAGS_use_merge) {
if (!FLAGS_use_txn) {
s = db_->Merge(write_opts, cfh, key, v);
} else {
#ifndef ROCKSDB_LITE
Transaction* txn;
s = NewTxn(write_opts, &txn);
if (s.ok()) {
s = txn->Merge(cfh, key, v);
if (s.ok()) {
s = CommitTxn(txn);
}
}
#endif
}
} else {
if (!FLAGS_use_txn) {
s = db_->Put(write_opts, cfh, key, v);
} else {
#ifndef ROCKSDB_LITE
Transaction* txn;
s = NewTxn(write_opts, &txn);
if (s.ok()) {
s = txn->Put(cfh, key, v);
if (s.ok()) {
s = CommitTxn(txn);
}
}
#endif
}
}
shared->Put(rand_column_family, rand_key, value_base, false /* pending */);
if (!s.ok()) {
fprintf(stderr, "put or merge error: %s\n", s.ToString().c_str());
std::terminate();
}
thread->stats.AddBytesForWrites(1, sz);
PrintKeyValue(rand_column_family, static_cast<uint32_t>(rand_key),
value, sz);
return s;
}
virtual Status TestDelete(ThreadState* thread, WriteOptions& write_opts,
const std::vector<int>& rand_column_families,
const std::vector<int64_t>& rand_keys,
std::unique_ptr<MutexLock>& lock) {
int64_t rand_key = rand_keys[0];
int rand_column_family = rand_column_families[0];
auto shared = thread->shared;
int64_t max_key = shared->GetMaxKey();
// OPERATION delete
// If the chosen key does not allow overwrite and it does not exist,
// choose another key.
while (!shared->AllowsOverwrite(rand_key) &&
!shared->Exists(rand_column_family, rand_key)) {
lock.reset();
rand_key = thread->rand.Next() % max_key;
rand_column_family = thread->rand.Next() % FLAGS_column_families;
lock.reset(new MutexLock(
shared->GetMutexForKey(rand_column_family, rand_key)));
}
std::string key_str = Key(rand_key);
Slice key = key_str;
auto cfh = column_families_[rand_column_family];
// Use delete if the key may be overwritten and a single deletion
// otherwise.
Status s;
if (shared->AllowsOverwrite(rand_key)) {
shared->Delete(rand_column_family, rand_key, true /* pending */);
if (!FLAGS_use_txn) {
s = db_->Delete(write_opts, cfh, key);
} else {
#ifndef ROCKSDB_LITE
Transaction* txn;
s = NewTxn(write_opts, &txn);
if (s.ok()) {
s = txn->Delete(cfh, key);
if (s.ok()) {
s = CommitTxn(txn);
}
}
#endif
}
shared->Delete(rand_column_family, rand_key, false /* pending */);
thread->stats.AddDeletes(1);
if (!s.ok()) {
fprintf(stderr, "delete error: %s\n", s.ToString().c_str());
std::terminate();
}
} else {
shared->SingleDelete(rand_column_family, rand_key, true /* pending */);
if (!FLAGS_use_txn) {
s = db_->SingleDelete(write_opts, cfh, key);
} else {
#ifndef ROCKSDB_LITE
Transaction* txn;
s = NewTxn(write_opts, &txn);
if (s.ok()) {
s = txn->SingleDelete(cfh, key);
if (s.ok()) {
s = CommitTxn(txn);
}
}
#endif
}
shared->SingleDelete(rand_column_family, rand_key, false /* pending */);
thread->stats.AddSingleDeletes(1);
if (!s.ok()) {
fprintf(stderr, "single delete error: %s\n",
s.ToString().c_str());
std::terminate();
}
}
return s;
}
virtual Status TestDeleteRange(ThreadState* thread,
WriteOptions& write_opts,
const std::vector<int>& rand_column_families,
const std::vector<int64_t>& rand_keys,
std::unique_ptr<MutexLock>& lock) {
// OPERATION delete range
std::vector<std::unique_ptr<MutexLock>> range_locks;
// delete range does not respect disallowed overwrites. the keys for
// which overwrites are disallowed are randomly distributed so it
// could be expensive to find a range where each key allows
// overwrites.
int64_t rand_key = rand_keys[0];
int rand_column_family = rand_column_families[0];
auto shared = thread->shared;
int64_t max_key = shared->GetMaxKey();
if (rand_key > max_key - FLAGS_range_deletion_width) {
lock.reset();
rand_key = thread->rand.Next() %
(max_key - FLAGS_range_deletion_width + 1);
range_locks.emplace_back(new MutexLock(
shared->GetMutexForKey(rand_column_family, rand_key)));
} else {
range_locks.emplace_back(std::move(lock));
}
for (int j = 1; j < FLAGS_range_deletion_width; ++j) {
if (((rand_key + j) & ((1 << FLAGS_log2_keys_per_lock) - 1)) == 0) {
range_locks.emplace_back(new MutexLock(
shared->GetMutexForKey(rand_column_family, rand_key + j)));
}
}
shared->DeleteRange(rand_column_family, rand_key,
rand_key + FLAGS_range_deletion_width,
true /* pending */);
std::string keystr = Key(rand_key);
Slice key = keystr;
auto cfh = column_families_[rand_column_family];
std::string end_keystr = Key(rand_key + FLAGS_range_deletion_width);
Slice end_key = end_keystr;
Status s = db_->DeleteRange(write_opts, cfh, key, end_key);
if (!s.ok()) {
fprintf(stderr, "delete range error: %s\n",
s.ToString().c_str());
std::terminate();
}
int covered = shared->DeleteRange(
rand_column_family, rand_key,
rand_key + FLAGS_range_deletion_width, false /* pending */);
thread->stats.AddRangeDeletions(1);
thread->stats.AddCoveredByRangeDeletions(covered);
return s;
}
#ifdef ROCKSDB_LITE
virtual void TestIngestExternalFile(
ThreadState* /* thread */,
const std::vector<int>& /* rand_column_families */,
const std::vector<int64_t>& /* rand_keys */,
std::unique_ptr<MutexLock>& /* lock */) {
assert(false);
fprintf(stderr,
"RocksDB lite does not support "
"TestIngestExternalFile\n");
std::terminate();
}
#else
virtual void TestIngestExternalFile(
ThreadState* thread, const std::vector<int>& rand_column_families,
const std::vector<int64_t>& rand_keys, std::unique_ptr<MutexLock>& lock) {
const std::string sst_filename =
FLAGS_db + "/." + ToString(thread->tid) + ".sst";
Status s;
if (FLAGS_env->FileExists(sst_filename).ok()) {
// Maybe we terminated abnormally before, so cleanup to give this file
// ingestion a clean slate
s = FLAGS_env->DeleteFile(sst_filename);
}
SstFileWriter sst_file_writer(EnvOptions(), options_);
if (s.ok()) {
s = sst_file_writer.Open(sst_filename);
}
int64_t key_base = rand_keys[0];
int column_family = rand_column_families[0];
std::vector<std::unique_ptr<MutexLock> > range_locks;
std::vector<uint32_t> values;
SharedState* shared = thread->shared;
// Grab locks, set pending state on expected values, and add keys
for (int64_t key = key_base;
s.ok() && key < std::min(key_base + FLAGS_ingest_external_file_width,
shared->GetMaxKey());
++key) {
if (key == key_base) {
range_locks.emplace_back(std::move(lock));
} else if ((key & ((1 << FLAGS_log2_keys_per_lock) - 1)) == 0) {
range_locks.emplace_back(
new MutexLock(shared->GetMutexForKey(column_family, key)));
}
uint32_t value_base = thread->rand.Next() % shared->UNKNOWN_SENTINEL;
values.push_back(value_base);
shared->Put(column_family, key, value_base, true /* pending */);
char value[100];
size_t value_len = GenerateValue(value_base, value, sizeof(value));
auto key_str = Key(key);
s = sst_file_writer.Put(Slice(key_str), Slice(value, value_len));
}
if (s.ok()) {
s = sst_file_writer.Finish();
}
if (s.ok()) {
s = db_->IngestExternalFile(column_families_[column_family],
{sst_filename}, IngestExternalFileOptions());
}
if (!s.ok()) {
fprintf(stderr, "file ingestion error: %s\n", s.ToString().c_str());
std::terminate();
}
int64_t key = key_base;
for (int32_t value : values) {
shared->Put(column_family, key, value, false /* pending */);
++key;
}
}
#endif // ROCKSDB_LITE
bool VerifyValue(int cf, int64_t key, const ReadOptions& /*opts*/,
SharedState* shared, const std::string& value_from_db,
Status s, bool strict = false) const {
if (shared->HasVerificationFailedYet()) {
return false;
}
// compare value_from_db with the value in the shared state
char value[kValueMaxLen];
uint32_t value_base = shared->Get(cf, key);
if (value_base == SharedState::UNKNOWN_SENTINEL) {
return true;
}
if (value_base == SharedState::DELETION_SENTINEL && !strict) {
return true;
}
if (s.ok()) {
if (value_base == SharedState::DELETION_SENTINEL) {
VerificationAbort(shared, "Unexpected value found", cf, key);
return false;
}
size_t sz = GenerateValue(value_base, value, sizeof(value));
if (value_from_db.length() != sz) {
VerificationAbort(shared, "Length of value read is not equal", cf, key);
return false;
}
if (memcmp(value_from_db.data(), value, sz) != 0) {
VerificationAbort(shared, "Contents of value read don't match", cf,
key);
return false;
}
} else {
if (value_base != SharedState::DELETION_SENTINEL) {
VerificationAbort(shared, "Value not found: " + s.ToString(), cf, key);
return false;
}
}
return true;
}
};
class BatchedOpsStressTest : public StressTest {
public:
BatchedOpsStressTest() {}
virtual ~BatchedOpsStressTest() {}
// Given a key K and value V, this puts ("0"+K, "0"+V), ("1"+K, "1"+V), ...
// ("9"+K, "9"+V) in DB atomically i.e in a single batch.
// Also refer BatchedOpsStressTest::TestGet
virtual Status TestPut(ThreadState* thread,
WriteOptions& write_opts, const ReadOptions& /* read_opts */,
const std::vector<int>& rand_column_families, const std::vector<int64_t>& rand_keys,
char (&value)[100], std::unique_ptr<MutexLock>& /* lock */) {
uint32_t value_base =
thread->rand.Next() % thread->shared->UNKNOWN_SENTINEL;
size_t sz = GenerateValue(value_base, value, sizeof(value));
Slice v(value, sz);
std::string keys[10] = {"9", "8", "7", "6", "5",
"4", "3", "2", "1", "0"};
std::string values[10] = {"9", "8", "7", "6", "5",
"4", "3", "2", "1", "0"};
Slice value_slices[10];
WriteBatch batch;
Status s;
auto cfh = column_families_[rand_column_families[0]];
std::string key_str = Key(rand_keys[0]);
for (int i = 0; i < 10; i++) {
keys[i] += key_str;
values[i] += v.ToString();
value_slices[i] = values[i];
if (FLAGS_use_merge) {
batch.Merge(cfh, keys[i], value_slices[i]);
} else {
batch.Put(cfh, keys[i], value_slices[i]);
}
}
s = db_->Write(write_opts, &batch);
if (!s.ok()) {
fprintf(stderr, "multiput error: %s\n", s.ToString().c_str());
thread->stats.AddErrors(1);
} else {
// we did 10 writes each of size sz + 1
thread->stats.AddBytesForWrites(10, (sz + 1) * 10);
}
return s;
}
// Given a key K, this deletes ("0"+K), ("1"+K),... ("9"+K)
// in DB atomically i.e in a single batch. Also refer MultiGet.
virtual Status TestDelete(ThreadState* thread, WriteOptions& writeoptions,
const std::vector<int>& rand_column_families,
const std::vector<int64_t>& rand_keys,
std::unique_ptr<MutexLock>& /* lock */) {
std::string keys[10] = {"9", "7", "5", "3", "1",
"8", "6", "4", "2", "0"};
WriteBatch batch;
Status s;
auto cfh = column_families_[rand_column_families[0]];
std::string key_str = Key(rand_keys[0]);
for (int i = 0; i < 10; i++) {
keys[i] += key_str;
batch.Delete(cfh, keys[i]);
}
s = db_->Write(writeoptions, &batch);
if (!s.ok()) {
fprintf(stderr, "multidelete error: %s\n", s.ToString().c_str());
thread->stats.AddErrors(1);
} else {
thread->stats.AddDeletes(10);
}
return s;
}
virtual Status TestDeleteRange(ThreadState* /* thread */,
WriteOptions& /* write_opts */,
const std::vector<int>& /* rand_column_families */,
const std::vector<int64_t>& /* rand_keys */,
std::unique_ptr<MutexLock>& /* lock */) {
assert(false);
return Status::NotSupported("BatchedOpsStressTest does not support "
"TestDeleteRange");
}
virtual void TestIngestExternalFile(
ThreadState* /* thread */,
const std::vector<int>& /* rand_column_families */,
const std::vector<int64_t>& /* rand_keys */,
std::unique_ptr<MutexLock>& /* lock */) {
assert(false);
fprintf(stderr,
"BatchedOpsStressTest does not support "
"TestIngestExternalFile\n");
std::terminate();
}
// Given a key K, this gets values for "0"+K, "1"+K,..."9"+K
// in the same snapshot, and verifies that all the values are of the form
// "0"+V, "1"+V,..."9"+V.
// ASSUMES that BatchedOpsStressTest::TestPut was used to put (K, V) into
// the DB.
virtual Status TestGet(ThreadState* thread, const ReadOptions& readoptions,
const std::vector<int>& rand_column_families,
const std::vector<int64_t>& rand_keys) {
std::string keys[10] = {"0", "1", "2", "3", "4", "5", "6", "7", "8", "9"};
Slice key_slices[10];
std::string values[10];
ReadOptions readoptionscopy = readoptions;
readoptionscopy.snapshot = db_->GetSnapshot();
std::string key_str = Key(rand_keys[0]);
Slice key = key_str;
auto cfh = column_families_[rand_column_families[0]];
std::string from_db;
Status s;
for (int i = 0; i < 10; i++) {
keys[i] += key.ToString();
key_slices[i] = keys[i];
s = db_->Get(readoptionscopy, cfh, key_slices[i], &from_db);
if (!s.ok() && !s.IsNotFound()) {
fprintf(stderr, "get error: %s\n", s.ToString().c_str());
values[i] = "";
thread->stats.AddErrors(1);
// we continue after error rather than exiting so that we can
// find more errors if any
} else if (s.IsNotFound()) {
values[i] = "";
thread->stats.AddGets(1, 0);
} else {
values[i] = from_db;
char expected_prefix = (keys[i])[0];
char actual_prefix = (values[i])[0];
if (actual_prefix != expected_prefix) {
fprintf(stderr, "error expected prefix = %c actual = %c\n",
expected_prefix, actual_prefix);
}
(values[i])[0] = ' '; // blank out the differing character
thread->stats.AddGets(1, 1);
}
}
db_->ReleaseSnapshot(readoptionscopy.snapshot);
// Now that we retrieved all values, check that they all match
for (int i = 1; i < 10; i++) {
if (values[i] != values[0]) {
fprintf(stderr, "error : inconsistent values for key %s: %s, %s\n",
key.ToString(true).c_str(), StringToHex(values[0]).c_str(),
StringToHex(values[i]).c_str());
// we continue after error rather than exiting so that we can
// find more errors if any
}
}
return s;
}
// Given a key, this does prefix scans for "0"+P, "1"+P,..."9"+P
// in the same snapshot where P is the first FLAGS_prefix_size - 1 bytes
// of the key. Each of these 10 scans returns a series of values;
// each series should be the same length, and it is verified for each
// index i that all the i'th values are of the form "0"+V, "1"+V,..."9"+V.
// ASSUMES that MultiPut was used to put (K, V)
virtual Status TestPrefixScan(ThreadState* thread, const ReadOptions& readoptions,
const std::vector<int>& rand_column_families,
const std::vector<int64_t>& rand_keys) {
std::string key_str = Key(rand_keys[0]);
Slice key = key_str;
auto cfh = column_families_[rand_column_families[0]];
std::string prefixes[10] = {"0", "1", "2", "3", "4",
"5", "6", "7", "8", "9"};
Slice prefix_slices[10];
ReadOptions readoptionscopy[10];
const Snapshot* snapshot = db_->GetSnapshot();
Iterator* iters[10];
std::string upper_bounds[10];
Slice ub_slices[10];
Status s = Status::OK();
for (int i = 0; i < 10; i++) {
prefixes[i] += key.ToString();
prefixes[i].resize(FLAGS_prefix_size);
prefix_slices[i] = Slice(prefixes[i]);
readoptionscopy[i] = readoptions;
readoptionscopy[i].snapshot = snapshot;
if (thread->rand.OneIn(2) &&
GetNextPrefix(prefix_slices[i], &(upper_bounds[i]))) {
// For half of the time, set the upper bound to the next prefix
ub_slices[i] = Slice(upper_bounds[i]);
readoptionscopy[i].iterate_upper_bound = &(ub_slices[i]);
}
iters[i] = db_->NewIterator(readoptionscopy[i], cfh);
iters[i]->Seek(prefix_slices[i]);
}
long count = 0;
while (iters[0]->Valid() && iters[0]->key().starts_with(prefix_slices[0])) {
count++;
std::string values[10];
// get list of all values for this iteration
for (int i = 0; i < 10; i++) {
// no iterator should finish before the first one
assert(iters[i]->Valid() &&
iters[i]->key().starts_with(prefix_slices[i]));
values[i] = iters[i]->value().ToString();
char expected_first = (prefixes[i])[0];
char actual_first = (values[i])[0];
if (actual_first != expected_first) {
fprintf(stderr, "error expected first = %c actual = %c\n",
expected_first, actual_first);
}
(values[i])[0] = ' '; // blank out the differing character
}
// make sure all values are equivalent
for (int i = 0; i < 10; i++) {
if (values[i] != values[0]) {
fprintf(stderr, "error : %d, inconsistent values for prefix %s: %s, %s\n",
i, prefixes[i].c_str(), StringToHex(values[0]).c_str(),
StringToHex(values[i]).c_str());
// we continue after error rather than exiting so that we can
// find more errors if any
}
iters[i]->Next();
}
}
// cleanup iterators and snapshot
for (int i = 0; i < 10; i++) {
// if the first iterator finished, they should have all finished
assert(!iters[i]->Valid() ||
!iters[i]->key().starts_with(prefix_slices[i]));
assert(iters[i]->status().ok());
delete iters[i];
}
db_->ReleaseSnapshot(snapshot);
if (s.ok()) {
thread->stats.AddPrefixes(1, count);
} else {
thread->stats.AddErrors(1);
}
return s;
}
virtual void VerifyDb(ThreadState* /* thread */) const {}
};
class AtomicFlushStressTest : public StressTest {
public:
AtomicFlushStressTest() : batch_id_(0) {}
virtual ~AtomicFlushStressTest() {}
virtual Status TestPut(ThreadState* thread, WriteOptions& write_opts,
const ReadOptions& /* read_opts */,
const std::vector<int>& rand_column_families,
const std::vector<int64_t>& rand_keys,
char (&value)[100],
std::unique_ptr<MutexLock>& /* lock */) {
std::string key_str = Key(rand_keys[0]);
Slice key = key_str;
uint64_t value_base = batch_id_.fetch_add(1);
size_t sz =
GenerateValue(static_cast<uint32_t>(value_base), value, sizeof(value));
Slice v(value, sz);
WriteBatch batch;
for (auto cf : rand_column_families) {
ColumnFamilyHandle* cfh = column_families_[cf];
if (FLAGS_use_merge) {
batch.Merge(cfh, key, v);
} else { /* !FLAGS_use_merge */
batch.Put(cfh, key, v);
}
}
Status s = db_->Write(write_opts, &batch);
if (!s.ok()) {
fprintf(stderr, "multi put or merge error: %s\n", s.ToString().c_str());
thread->stats.AddErrors(1);
} else {
auto num = static_cast<long>(rand_column_families.size());
thread->stats.AddBytesForWrites(num, (sz + 1) * num);
}
return s;
}
virtual Status TestDelete(ThreadState* thread, WriteOptions& write_opts,
const std::vector<int>& rand_column_families,
const std::vector<int64_t>& rand_keys,
std::unique_ptr<MutexLock>& /* lock */) {
std::string key_str = Key(rand_keys[0]);
Slice key = key_str;
WriteBatch batch;
for (auto cf : rand_column_families) {
ColumnFamilyHandle* cfh = column_families_[cf];
batch.Delete(cfh, key);
}
Status s = db_->Write(write_opts, &batch);
if (!s.ok()) {
fprintf(stderr, "multidel error: %s\n", s.ToString().c_str());
thread->stats.AddErrors(1);
} else {
thread->stats.AddDeletes(static_cast<long>(rand_column_families.size()));
}
return s;
}
virtual Status TestDeleteRange(ThreadState* thread, WriteOptions& write_opts,
const std::vector<int>& rand_column_families,
const std::vector<int64_t>& rand_keys,
std::unique_ptr<MutexLock>& /* lock */) {
int64_t rand_key = rand_keys[0];
auto shared = thread->shared;
int64_t max_key = shared->GetMaxKey();
if (rand_key > max_key - FLAGS_range_deletion_width) {
rand_key =
thread->rand.Next() % (max_key - FLAGS_range_deletion_width + 1);
}
std::string key_str = Key(rand_key);
Slice key = key_str;
std::string end_key_str = Key(rand_key + FLAGS_range_deletion_width);
Slice end_key = end_key_str;
WriteBatch batch;
for (auto cf : rand_column_families) {
ColumnFamilyHandle* cfh = column_families_[rand_column_families[cf]];
batch.DeleteRange(cfh, key, end_key);
}
Status s = db_->Write(write_opts, &batch);
if (!s.ok()) {
fprintf(stderr, "multi del range error: %s\n", s.ToString().c_str());
thread->stats.AddErrors(1);
} else {
thread->stats.AddRangeDeletions(
static_cast<long>(rand_column_families.size()));
}
return s;
}
virtual void TestIngestExternalFile(
ThreadState* /* thread */,
const std::vector<int>& /* rand_column_families */,
const std::vector<int64_t>& /* rand_keys */,
std::unique_ptr<MutexLock>& /* lock */) {
assert(false);
fprintf(stderr,
"AtomicFlushStressTest does not support TestIngestExternalFile "
"because it's not possible to verify the result\n");
std::terminate();
}
virtual Status TestGet(ThreadState* thread, const ReadOptions& readoptions,
const std::vector<int>& rand_column_families,
const std::vector<int64_t>& rand_keys) {
std::string key_str = Key(rand_keys[0]);
Slice key = key_str;
auto cfh =
column_families_[rand_column_families[thread->rand.Next() %
rand_column_families.size()]];
std::string from_db;
Status s = db_->Get(readoptions, cfh, key, &from_db);
if (s.ok()) {
thread->stats.AddGets(1, 1);
} else if (s.IsNotFound()) {
thread->stats.AddGets(1, 0);
} else {
thread->stats.AddErrors(1);
}
return s;
}
virtual Status TestPrefixScan(ThreadState* thread,
const ReadOptions& readoptions,
const std::vector<int>& rand_column_families,
const std::vector<int64_t>& rand_keys) {
std::string key_str = Key(rand_keys[0]);
Slice key = key_str;
Slice prefix = Slice(key.data(), FLAGS_prefix_size);
std::string upper_bound;
Slice ub_slice;
ReadOptions ro_copy = readoptions;
if (thread->rand.OneIn(2) && GetNextPrefix(prefix, &upper_bound)) {
ub_slice = Slice(upper_bound);
ro_copy.iterate_upper_bound = &ub_slice;
}
auto cfh =
column_families_[rand_column_families[thread->rand.Next() %
rand_column_families.size()]];
Iterator* iter = db_->NewIterator(ro_copy, cfh);
long count = 0;
for (iter->Seek(prefix); iter->Valid() && iter->key().starts_with(prefix);
iter->Next()) {
++count;
}
assert(count <= (static_cast<long>(1) << ((8 - FLAGS_prefix_size) * 8)));
Status s = iter->status();
if (s.ok()) {
thread->stats.AddPrefixes(1, count);
} else {
thread->stats.AddErrors(1);
}
delete iter;
return s;
}
#ifdef ROCKSDB_LITE
virtual Status TestCheckpoint(
ThreadState* /* thread */,
const std::vector<int>& /* rand_column_families */,
const std::vector<int64_t>& /* rand_keys */) {
assert(false);
fprintf(stderr,
"RocksDB lite does not support "
"TestCheckpoint\n");
std::terminate();
}
#else
virtual Status TestCheckpoint(
ThreadState* thread, const std::vector<int>& /* rand_column_families */,
const std::vector<int64_t>& /* rand_keys */) {
std::string checkpoint_dir =
FLAGS_db + "/.checkpoint" + ToString(thread->tid);
DestroyDB(checkpoint_dir, Options());
Checkpoint* checkpoint = nullptr;
Status s = Checkpoint::Create(db_, &checkpoint);
if (s.ok()) {
s = checkpoint->CreateCheckpoint(checkpoint_dir);
}
std::vector<ColumnFamilyHandle*> cf_handles;
DB* checkpoint_db = nullptr;
if (s.ok()) {
delete checkpoint;
checkpoint = nullptr;
Options options(options_);
options.listeners.clear();
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_`.
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) {
for (auto cfh : cf_handles) {
delete cfh;
}
cf_handles.clear();
delete checkpoint_db;
checkpoint_db = nullptr;
}
DestroyDB(checkpoint_dir, Options());
if (!s.ok()) {
fprintf(stderr, "A checkpoint operation failed with: %s\n",
s.ToString().c_str());
}
return s;
}
#endif // !ROCKSDB_LITE
virtual void VerifyDb(ThreadState* thread) const {
ReadOptions options(FLAGS_verify_checksum, true);
// We must set total_order_seek to true because we are doing a SeekToFirst
// on a column family whose memtables may support (by default) prefix-based
// iterator. In this case, NewIterator with options.total_order_seek being
// false returns a prefix-based iterator. Calling SeekToFirst using this
// iterator causes the iterator to become invalid. That means we cannot
// iterate the memtable using this iterator any more, although the memtable
// contains the most up-to-date key-values.
options.total_order_seek = true;
assert(thread != nullptr);
auto shared = thread->shared;
std::vector<std::unique_ptr<Iterator> > iters(column_families_.size());
for (size_t i = 0; i != column_families_.size(); ++i) {
iters[i].reset(db_->NewIterator(options, column_families_[i]));
}
for (auto& iter : iters) {
iter->SeekToFirst();
}
size_t num = column_families_.size();
assert(num == iters.size());
std::vector<Status> statuses(num, Status::OK());
do {
size_t valid_cnt = 0;
size_t idx = 0;
for (auto& iter : iters) {
if (iter->Valid()) {
++valid_cnt;
} else {
statuses[idx] = iter->status();
}
++idx;
}
if (valid_cnt == 0) {
Status status;
for (size_t i = 0; i != num; ++i) {
const auto& s = statuses[i];
if (!s.ok()) {
status = s;
fprintf(stderr, "Iterator on cf %s has error: %s\n",
column_families_[i]->GetName().c_str(),
s.ToString().c_str());
shared->SetVerificationFailure();
}
}
if (status.ok()) {
fprintf(stdout, "Finished scanning all column families.\n");
}
break;
} else if (valid_cnt != iters.size()) {
for (size_t i = 0; i != num; ++i) {
if (!iters[i]->Valid()) {
if (statuses[i].ok()) {
fprintf(stderr, "Finished scanning cf %s\n",
column_families_[i]->GetName().c_str());
} else {
fprintf(stderr, "Iterator on cf %s has error: %s\n",
column_families_[i]->GetName().c_str(),
statuses[i].ToString().c_str());
}
} else {
fprintf(stderr, "cf %s has remaining data to scan\n",
column_families_[i]->GetName().c_str());
}
}
shared->SetVerificationFailure();
break;
}
// If the program reaches here, then all column families' iterators are
// still valid.
Slice key;
Slice value;
for (size_t i = 0; i != num; ++i) {
if (i == 0) {
key = iters[i]->key();
value = iters[i]->value();
} else {
if (key.compare(iters[i]->key()) != 0) {
fprintf(stderr, "Verification failed\n");
fprintf(stderr, "cf%s: %s => %s\n",
column_families_[0]->GetName().c_str(),
key.ToString(true /* hex */).c_str(),
value.ToString(/* hex */).c_str());
fprintf(stderr, "cf%s: %s => %s\n",
column_families_[i]->GetName().c_str(),
iters[i]->key().ToString(true /* hex */).c_str(),
iters[i]->value().ToString(true /* hex */).c_str());
shared->SetVerificationFailure();
}
}
}
for (auto& iter : iters) {
iter->Next();
}
} while (true);
}
virtual std::vector<int> GenerateColumnFamilies(
const int /* num_column_families */, int /* rand_column_family */) const {
std::vector<int> ret;
int num = static_cast<int>(column_families_.size());
int k = 0;
std::generate_n(back_inserter(ret), num, [&k]() -> int { return k++; });
return ret;
}
private:
std::atomic<int64_t> batch_id_;
};
} // namespace rocksdb
int main(int argc, char** argv) {
SetUsageMessage(std::string("\nUSAGE:\n") + std::string(argv[0]) +
" [OPTIONS]...");
ParseCommandLineFlags(&argc, &argv, true);
if (FLAGS_statistics) {
dbstats = rocksdb::CreateDBStatistics();
}
FLAGS_compression_type_e =
StringToCompressionType(FLAGS_compression_type.c_str());
FLAGS_checksum_type_e = StringToChecksumType(FLAGS_checksum_type.c_str());
if (!FLAGS_hdfs.empty()) {
FLAGS_env = new rocksdb::HdfsEnv(FLAGS_hdfs);
}
FLAGS_rep_factory = StringToRepFactory(FLAGS_memtablerep.c_str());
// The number of background threads should be at least as much the
// max number of concurrent compactions.
FLAGS_env->SetBackgroundThreads(FLAGS_max_background_compactions);
FLAGS_env->SetBackgroundThreads(FLAGS_num_bottom_pri_threads,
rocksdb::Env::Priority::BOTTOM);
if (FLAGS_prefixpercent > 0 && FLAGS_prefix_size <= 0) {
fprintf(stderr,
"Error: prefixpercent is non-zero while prefix_size is "
"not positive!\n");
exit(1);
}
if (FLAGS_test_batches_snapshots && FLAGS_prefix_size <= 0) {
fprintf(stderr,
"Error: please specify prefix_size for "
"test_batches_snapshots test!\n");
exit(1);
}
if (FLAGS_memtable_prefix_bloom_size_ratio > 0.0 && FLAGS_prefix_size <= 0) {
fprintf(stderr,
"Error: please specify positive prefix_size in order to use "
"memtable_prefix_bloom_size_ratio\n");
exit(1);
}
if ((FLAGS_readpercent + FLAGS_prefixpercent +
FLAGS_writepercent + FLAGS_delpercent + FLAGS_delrangepercent +
FLAGS_iterpercent) != 100) {
fprintf(stderr,
"Error: Read+Prefix+Write+Delete+DeleteRange+Iterate percents != "
"100!\n");
exit(1);
}
if (FLAGS_disable_wal == 1 && FLAGS_reopen > 0) {
fprintf(stderr, "Error: Db cannot reopen safely with disable_wal set!\n");
exit(1);
}
if ((unsigned)FLAGS_reopen >= FLAGS_ops_per_thread) {
fprintf(stderr,
"Error: #DB-reopens should be < ops_per_thread\n"
"Provided reopens = %d and ops_per_thread = %lu\n",
FLAGS_reopen,
(unsigned long)FLAGS_ops_per_thread);
exit(1);
}
if (FLAGS_test_batches_snapshots && FLAGS_delrangepercent > 0) {
fprintf(stderr, "Error: nonzero delrangepercent unsupported in "
"test_batches_snapshots mode\n");
exit(1);
}
if (FLAGS_active_width > FLAGS_max_key) {
fprintf(stderr, "Error: active_width can be at most max_key\n");
exit(1);
} else if (FLAGS_active_width == 0) {
FLAGS_active_width = FLAGS_max_key;
}
if (FLAGS_value_size_mult * kRandomValueMaxFactor > kValueMaxLen) {
fprintf(stderr, "Error: value_size_mult can be at most %d\n",
kValueMaxLen / kRandomValueMaxFactor);
exit(1);
}
if (FLAGS_use_merge && FLAGS_nooverwritepercent == 100) {
fprintf(
stderr,
"Error: nooverwritepercent must not be 100 when using merge operands");
exit(1);
}
if (FLAGS_ingest_external_file_one_in > 0 && FLAGS_nooverwritepercent > 0) {
fprintf(stderr,
"Error: nooverwritepercent must be 0 when using file ingestion\n");
exit(1);
}
if (FLAGS_clear_column_family_one_in > 0 && FLAGS_backup_one_in > 0) {
fprintf(stderr,
"Error: clear_column_family_one_in must be 0 when using backup\n");
exit(1);
}
if (FLAGS_test_atomic_flush) {
FLAGS_atomic_flush = true;
}
if (FLAGS_read_only) {
if (FLAGS_writepercent != 0 || FLAGS_delpercent != 0 ||
FLAGS_delrangepercent != 0) {
fprintf(stderr, "Error: updates are not supported in read only mode\n");
exit(1);
} else if (FLAGS_checkpoint_one_in > 0 &&
FLAGS_clear_column_family_one_in > 0) {
fprintf(stdout,
"Warn: checkpoint won't be validated since column families may "
"be dropped.\n");
}
}
// Choose a location for the test database if none given with --db=<path>
if (FLAGS_db.empty()) {
std::string default_db_path;
rocksdb::Env::Default()->GetTestDirectory(&default_db_path);
default_db_path += "/dbstress";
FLAGS_db = default_db_path;
}
rocksdb_kill_odds = FLAGS_kill_random_test;
rocksdb_kill_prefix_blacklist = SplitString(FLAGS_kill_prefix_blacklist);
std::unique_ptr<rocksdb::StressTest> stress;
if (FLAGS_test_atomic_flush) {
stress.reset(new rocksdb::AtomicFlushStressTest());
} else if (FLAGS_test_batches_snapshots) {
stress.reset(new rocksdb::BatchedOpsStressTest());
} else {
stress.reset(new rocksdb::NonBatchedOpsStressTest());
}
if (stress->Run()) {
return 0;
} else {
return 1;
}
}
#endif // GFLAGS
