rocksdb/tools/db_stress.cc
Yanqin Jin a78503bd6c Temporarily disable snapshot list refresh for atomic flush stress test (#5581)
Summary:
Atomic flush test started to fail after https://github.com/facebook/rocksdb/issues/5099. Then https://github.com/facebook/rocksdb/issues/5278 provided a fix after
which the same error occurred much less frequently. However it still occur
occasionally. Not sure what the root cause is. This PR disables the feature of
snapshot list refresh, and we should keep an eye on the failure in the future.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/5581

Differential Revision: D16295985

Pulled By: riversand963

fbshipit-source-id: c9e62e65133c52c21b07097de359632ca62571e4
2019-07-22 14:38:16 -07:00

4525 lines
161 KiB
C++

// 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
#include <fcntl.h>
#include <cinttypes>
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <algorithm>
#include <array>
#include <chrono>
#include <exception>
#include <queue>
#include <thread>
#include "db/db_impl/db_impl.h"
#include "db/version_set.h"
#include "hdfs/env_hdfs.h"
#include "logging/logging.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/debug.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/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 "test_util/sync_point.h"
#endif // !(defined NDEBUG) || !defined(OS_WIN)
#include "test_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_bool(memtable_whole_key_filtering,
rocksdb::Options().memtable_whole_key_filtering,
"Enable whole key filtering in memtables.");
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(cache_index_and_filter_blocks, false,
"True if indexes/filters should be cached in block cache.");
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(secondaries_base, "",
"Use this path as the base path for secondary instances.");
DEFINE_bool(enable_secondary, false, "Enable secondary instance.");
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_uint64(recycle_log_file_num, rocksdb::Options().recycle_log_file_num,
"Number of old WAL files to keep around for later recycling");
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.");
DEFINE_bool(use_multiget, false,
"If set, use the batched MultiGet API for reads");
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);
DEFINE_uint64(
snap_refresh_nanos, 100 * 1000 * 1000,
"If non-zero, compactions will periodically refresh snapshot list.");
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");
DEFINE_int32(secondary_catch_up_one_in, 0,
"If non-zero, the secondaries attemp to catch up with the primary "
"once for every N operations on average. 0 indicates the "
"secondaries do not try to catch up after open.");
static std::shared_ptr<rocksdb::Statistics> dbstats_secondaries;
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),
printing_verification_results_(false) {
// 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;
}
bool PrintingVerificationResults() {
bool tmp = false;
return !printing_verification_results_.compare_exchange_strong(
tmp, true, std::memory_order_relaxed);
}
void FinishPrintingVerificationResults() {
printing_verification_results_.store(false, std::memory_order_relaxed);
}
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_;
std::atomic<bool> printing_verification_results_;
};
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]);
}
}
Options options;
options.env = FLAGS_env;
Status s = DestroyDB(FLAGS_db, options);
if (!s.ok()) {
fprintf(stderr, "Cannot destroy original db: %s\n",
s.ToString().c_str());
exit(1);
}
}
}
virtual ~StressTest() {
for (auto cf : column_families_) {
delete cf;
}
column_families_.clear();
delete db_;
assert(secondaries_.size() == secondary_cfh_lists_.size());
size_t n = secondaries_.size();
for (size_t i = 0; i != n; ++i) {
for (auto* cf : secondary_cfh_lists_[i]) {
delete cf;
}
secondary_cfh_lists_[i].clear();
delete secondaries_[i];
}
secondaries_.clear();
}
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();
}
}
#ifndef ROCKSDB_LITE
if (FLAGS_enable_secondary) {
now = FLAGS_env->NowMicros();
fprintf(stdout, "%s Start to verify secondaries against primary\n",
FLAGS_env->TimeToString(static_cast<uint64_t>(now) / 1000000)
.c_str());
}
for (size_t k = 0; k != secondaries_.size(); ++k) {
Status s = secondaries_[k]->TryCatchUpWithPrimary();
if (!s.ok()) {
fprintf(stderr, "Secondary failed to catch up with primary\n");
return false;
}
ReadOptions ropts;
ropts.total_order_seek = true;
// Verify only the default column family since the primary may have
// dropped other column families after most recent reopen.
std::unique_ptr<Iterator> iter1(db_->NewIterator(ropts));
std::unique_ptr<Iterator> iter2(secondaries_[k]->NewIterator(ropts));
for (iter1->SeekToFirst(), iter2->SeekToFirst();
iter1->Valid() && iter2->Valid(); iter1->Next(), iter2->Next()) {
if (iter1->key().compare(iter2->key()) != 0 ||
iter1->value().compare(iter2->value())) {
fprintf(stderr,
"Secondary %d contains different data from "
"primary.\nPrimary: %s : %s\nSecondary: %s : %s\n",
static_cast<int>(k),
iter1->key().ToString(/*hex=*/true).c_str(),
iter1->value().ToString(/*hex=*/true).c_str(),
iter2->key().ToString(/*hex=*/true).c_str(),
iter2->value().ToString(/*hex=*/true).c_str());
return false;
}
}
if (iter1->Valid() && !iter2->Valid()) {
fprintf(stderr,
"Secondary %d record count is smaller than that of primary\n",
static_cast<int>(k));
return false;
} else if (!iter1->Valid() && iter2->Valid()) {
fprintf(stderr,
"Secondary %d record count is larger than that of primary\n",
static_cast<int>(k));
return false;
}
}
if (FLAGS_enable_secondary) {
now = FLAGS_env->NowMicros();
fprintf(stdout, "%s Verification of secondaries succeeded\n",
FLAGS_env->TimeToString(static_cast<uint64_t>(now) / 1000000)
.c_str());
}
#endif // ROCKSDB_LITE
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 std::vector<int64_t> GenerateNKeys(
ThreadState* thread,
int num_keys,
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));
std::vector<int64_t> keys;
keys.reserve(num_keys);
int64_t next_key = base_key + thread->rand.Next() % FLAGS_active_width;
keys.push_back(next_key);
for (int i = 1; i < num_keys; ++i) {
// This may result in some duplicate keys
next_key = next_key + thread->rand.Next() %
(FLAGS_active_width - (next_key - base_key));
keys.push_back(next_key);
}
return keys;
}
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;
const uint64_t ops_per_open = FLAGS_ops_per_thread / (FLAGS_reopen + 1);
int multiget_batch_size = 0;
thread->stats.Start();
for (uint64_t i = 0; i < FLAGS_ops_per_thread; i++) {
if (thread->shared->HasVerificationFailedYet()) {
break;
}
// Check if the multiget batch crossed the ops_per_open boundary. If it
// did, then we should vote to reopen
if (i != 0 &&
(i % ops_per_open == 0 ||
i % ops_per_open < (i - multiget_batch_size) % ops_per_open)) {
{
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);
// Reset this in case we pick something other than a read op. We don't
// want to use a stale value when deciding at the beginning of the loop
// whether to vote to reopen
multiget_batch_size = 0;
if (prob_op >= 0 && prob_op < (int)FLAGS_readpercent) {
// OPERATION read
if (FLAGS_use_multiget) {
// Leave room for one more iteration of the loop with a single key
// batch. This is to ensure that each thread does exactly the same
// number of ops
multiget_batch_size = static_cast<int>(
std::min(static_cast<uint64_t>(thread->rand.Uniform(64)),
FLAGS_ops_per_thread - i - 1));
// If its the last iteration, ensure that multiget_batch_size is 1
multiget_batch_size = std::max(multiget_batch_size, 1);
rand_keys = GenerateNKeys(thread, multiget_batch_size, i);
TestMultiGet(thread, read_opts, rand_column_families, rand_keys);
i += multiget_batch_size - 1;
} else {
TestGet(thread, read_opts, rand_column_families, rand_keys);
}
} else if ((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();
#ifndef ROCKSDB_LITE
uint32_t tid = thread->tid;
assert(secondaries_.empty() ||
static_cast<size_t>(tid) < secondaries_.size());
if (FLAGS_secondary_catch_up_one_in > 0 &&
thread->rand.Uniform(FLAGS_secondary_catch_up_one_in) == 0) {
Status s = secondaries_[tid]->TryCatchUpWithPrimary();
if (!s.ok()) {
VerificationAbort(shared, "Secondary instance failed to catch up", s);
break;
}
}
#endif
}
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 std::vector<Status> TestMultiGet(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);
fprintf(stdout, "Use MultiGet : %s\n",
FLAGS_use_multiget ? "true" : "false");
const char* memtablerep = "";
switch (FLAGS_rep_factory) {
case kSkipList:
memtablerep = "skip_list";
break;
case kHashSkipList:
memtablerep = "prefix_hash";
break;
case kVectorRep:
memtablerep = "vector";
break;
}
fprintf(stdout, "Memtablerep : %s\n", memtablerep);
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, "Snapshot refresh nanos : %" PRIu64 "\n",
FLAGS_snap_refresh_nanos);
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.cache_index_and_filter_blocks =
FLAGS_cache_index_and_filter_blocks;
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_.memtable_whole_key_filtering =
FLAGS_memtable_whole_key_filtering;
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_.recycle_log_file_num =
static_cast<size_t>(FLAGS_recycle_log_file_num);
options_.target_file_size_base = FLAGS_target_file_size_base;
options_.target_file_size_multiplier = FLAGS_target_file_size_multiplier;
options_.max_bytes_for_level_base = FLAGS_max_bytes_for_level_base;
options_.max_bytes_for_level_multiplier =
FLAGS_max_bytes_for_level_multiplier;
options_.level0_stop_writes_trigger = FLAGS_level0_stop_writes_trigger;
options_.level0_slowdown_writes_trigger =
FLAGS_level0_slowdown_writes_trigger;
options_.level0_file_num_compaction_trigger =
FLAGS_level0_file_num_compaction_trigger;
options_.compression = 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();
}
options_.snap_refresh_nanos = FLAGS_snap_refresh_nanos;
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));
if (FLAGS_enable_secondary) {
#ifndef ROCKSDB_LITE
secondaries_.resize(FLAGS_threads);
std::fill(secondaries_.begin(), secondaries_.end(), nullptr);
secondary_cfh_lists_.clear();
secondary_cfh_lists_.resize(FLAGS_threads);
Options tmp_opts;
tmp_opts.max_open_files = FLAGS_open_files;
tmp_opts.statistics = dbstats_secondaries;
tmp_opts.env = FLAGS_env;
for (size_t i = 0; i != static_cast<size_t>(FLAGS_threads); ++i) {
const std::string secondary_path =
FLAGS_secondaries_base + "/" + std::to_string(i);
s = DB::OpenAsSecondary(tmp_opts, FLAGS_db, secondary_path,
cf_descriptors, &secondary_cfh_lists_[i],
&secondaries_[i]);
if (!s.ok()) {
break;
}
}
#else
fprintf(stderr, "Secondary is not supported in RocksDBLite\n");
exit(1);
#endif
}
} else {
#ifndef ROCKSDB_LITE
DBWithTTL* db_with_ttl;
s = DBWithTTL::Open(options_, FLAGS_db, &db_with_ttl, FLAGS_ttl);
db_ = db_with_ttl;
if (FLAGS_enable_secondary) {
secondaries_.resize(FLAGS_threads);
std::fill(secondaries_.begin(), secondaries_.end(), nullptr);
Options tmp_opts;
tmp_opts.max_open_files = FLAGS_open_files;
for (size_t i = 0; i != static_cast<size_t>(FLAGS_threads); ++i) {
const std::string secondary_path =
FLAGS_secondaries_base + "/" + std::to_string(i);
s = DB::OpenAsSecondary(tmp_opts, FLAGS_db, secondary_path,
&secondaries_[i]);
if (!s.ok()) {
break;
}
}
}
#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
assert(secondaries_.size() == secondary_cfh_lists_.size());
size_t n = secondaries_.size();
for (size_t i = 0; i != n; ++i) {
for (auto* cf : secondary_cfh_lists_[i]) {
delete cf;
}
secondary_cfh_lists_[i].clear();
delete secondaries_[i];
}
secondaries_.clear();
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());
}
if (dbstats_secondaries) {
fprintf(stdout, "Secondary instances STATISTICS:\n%s\n",
dbstats_secondaries->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_;
// Fields used for stress-testing secondary instance in the same process
std::vector<DB*> secondaries_;
std::vector<std::vector<ColumnFamilyHandle*> > secondary_cfh_lists_;
};
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 std::vector<Status> TestMultiGet(ThreadState* thread,
const ReadOptions& read_opts,
const std::vector<int>& rand_column_families,
const std::vector<int64_t>& rand_keys) {
size_t num_keys = rand_keys.size();
std::vector<std::string> key_str;
std::vector<Slice> keys;
key_str.reserve(num_keys);
keys.reserve(num_keys);
std::vector<PinnableSlice> values(num_keys);
std::vector<Status> statuses(num_keys);
ColumnFamilyHandle* cfh = column_families_[rand_column_families[0]];
for (size_t i = 0; i < num_keys; ++i) {
key_str.emplace_back(Key(rand_keys[i]));
keys.emplace_back(key_str.back());
}
db_->MultiGet(read_opts, cfh, num_keys, keys.data(), values.data(),
statuses.data());
for (const auto& s : statuses) {
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 statuses;
}
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;
}
virtual std::vector<Status> TestMultiGet(ThreadState* thread,
const ReadOptions& readoptions,
const std::vector<int>& rand_column_families,
const std::vector<int64_t>& rand_keys) {
size_t num_keys = rand_keys.size();
std::vector<Status> ret_status(num_keys);
std::array<std::string, 10> keys = {"0", "1", "2", "3", "4", "5", "6", "7", "8", "9"};
size_t num_prefixes = keys.size();
for (size_t rand_key = 0; rand_key < num_keys; ++rand_key) {
std::vector<Slice> key_slices;
std::vector<PinnableSlice> values(num_prefixes);
std::vector<Status> statuses(num_prefixes);
ReadOptions readoptionscopy = readoptions;
readoptionscopy.snapshot = db_->GetSnapshot();
std::vector<std::string> key_str;
key_str.reserve(num_prefixes);
key_slices.reserve(num_prefixes);
std::string from_db;
ColumnFamilyHandle* cfh = column_families_[rand_column_families[0]];
for (size_t key = 0; key < num_prefixes; ++key) {
key_str.emplace_back(keys[key] + Key(rand_keys[rand_key]));
key_slices.emplace_back(key_str.back());
}
db_->MultiGet(readoptionscopy, cfh, num_prefixes, key_slices.data(),
values.data(), statuses.data());
for (size_t i = 0; i < num_prefixes; i++) {
Status s = statuses[i];
if (!s.ok() && !s.IsNotFound()) {
fprintf(stderr, "get error: %s\n", s.ToString().c_str());
thread->stats.AddErrors(1);
ret_status[rand_key] = s;
// we continue after error rather than exiting so that we can
// find more errors if any
} else if (s.IsNotFound()) {
thread->stats.AddGets(1, 0);
ret_status[rand_key] = s;
} else {
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);
}
std::string str;
str.assign(values[i].data(), values[i].size());
values[i].Reset();
str[0] = ' '; // blank out the differing character
values[i].PinSelf(str);
thread->stats.AddGets(1, 1);
}
}
db_->ReleaseSnapshot(readoptionscopy.snapshot);
// Now that we retrieved all values, check that they all match
for (size_t i = 1; i < num_prefixes; i++) {
if (values[i] != values[0]) {
fprintf(stderr, "error : inconsistent values for key %s: %s, %s\n",
key_str[i].c_str(),
StringToHex(values[0].ToString()).c_str(),
StringToHex(values[i].ToString()).c_str());
// we continue after error rather than exiting so that we can
// find more errors if any
}
}
}
return ret_status;
}
// 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 std::vector<Status> TestMultiGet(ThreadState* thread,
const ReadOptions& read_opts,
const std::vector<int>& rand_column_families,
const std::vector<int64_t>& rand_keys) {
size_t num_keys = rand_keys.size();
std::vector<std::string> key_str;
std::vector<Slice> keys;
keys.reserve(num_keys);
key_str.reserve(num_keys);
std::vector<PinnableSlice> values(num_keys);
std::vector<Status> statuses(num_keys);
ColumnFamilyHandle* cfh = column_families_[rand_column_families[0]];
for (size_t i = 0; i < num_keys; ++i) {
key_str.emplace_back(Key(rand_keys[i]));
keys.emplace_back(key_str.back());
}
db_->MultiGet(read_opts, cfh, num_keys, keys.data(), values.data(), statuses.data());
for (auto s : statuses) {
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 statuses;
}
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 {
if (shared->HasVerificationFailedYet()) {
break;
}
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()) {
shared->SetVerificationFailure();
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());
}
}
break;
}
if (shared->HasVerificationFailedYet()) {
break;
}
// If the program reaches here, then all column families' iterators are
// still valid.
if (shared->PrintingVerificationResults()) {
continue;
}
Slice key;
Slice value;
int num_mismatched_cfs = 0;
for (size_t i = 0; i != num; ++i) {
if (i == 0) {
key = iters[i]->key();
value = iters[i]->value();
} else {
int cmp = key.compare(iters[i]->key());
if (cmp != 0) {
++num_mismatched_cfs;
if (1 == num_mismatched_cfs) {
fprintf(stderr, "Verification failed\n");
fprintf(stderr, "Latest Sequence Number: %" PRIu64 "\n",
db_->GetLatestSequenceNumber());
fprintf(stderr, "[%s] %s => %s\n",
column_families_[0]->GetName().c_str(),
key.ToString(true /* hex */).c_str(),
value.ToString(true /* hex */).c_str());
}
fprintf(stderr, "[%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());
#ifndef ROCKSDB_LITE
Slice begin_key;
Slice end_key;
if (cmp < 0) {
begin_key = key;
end_key = iters[i]->key();
} else {
begin_key = iters[i]->key();
end_key = key;
}
std::vector<KeyVersion> versions;
const size_t kMaxNumIKeys = 8;
const auto print_key_versions = [&](ColumnFamilyHandle* cfh) {
Status s = GetAllKeyVersions(db_, cfh, begin_key, end_key,
kMaxNumIKeys, &versions);
if (!s.ok()) {
fprintf(stderr, "%s\n", s.ToString().c_str());
return;
}
assert(nullptr != cfh);
fprintf(stderr,
"Internal keys in CF '%s', [%s, %s] (max %" ROCKSDB_PRIszt
")\n",
cfh->GetName().c_str(),
begin_key.ToString(true /* hex */).c_str(),
end_key.ToString(true /* hex */).c_str(), kMaxNumIKeys);
for (const KeyVersion& kv : versions) {
fprintf(stderr, " key %s seq %" PRIu64 " type %d\n",
Slice(kv.user_key).ToString(true).c_str(), kv.sequence,
kv.type);
}
};
if (1 == num_mismatched_cfs) {
print_key_versions(column_families_[0]);
}
print_key_versions(column_families_[i]);
#endif // ROCKSDB_LITE
shared->SetVerificationFailure();
}
}
}
shared->FinishPrintingVerificationResults();
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();
if (FLAGS_enable_secondary) {
dbstats_secondaries = 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;
}
if (FLAGS_enable_secondary && FLAGS_secondaries_base.empty()) {
std::string default_secondaries_path;
FLAGS_env->GetTestDirectory(&default_secondaries_path);
default_secondaries_path += "/dbstress_secondaries";
rocksdb::Status s = FLAGS_env->CreateDirIfMissing(default_secondaries_path);
if (!s.ok()) {
fprintf(stderr, "Failed to create directory %s: %s\n",
default_secondaries_path.c_str(), s.ToString().c_str());
exit(1);
}
FLAGS_secondaries_base = default_secondaries_path;
}
if (!FLAGS_enable_secondary && FLAGS_secondary_catch_up_one_in > 0) {
fprintf(stderr, "Secondary instance is disabled.\n");
exit(1);
}
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