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rocksdb/table/block_based/block_based_table_factory.cc
Peter Dillinger a7d4bea43a Implement XXH3 block checksum type (#9069) 
Summary:
XXH3 - latest hash function that is extremely fast on large
data, easily faster than crc32c on most any x86_64 hardware. In
integrating this hash function, I have handled the compression type byte
in a non-standard way to avoid using the streaming API (extra data
movement and active code size because of hash function complexity). This
approach got a thumbs-up from Yann Collet.

Existing functionality change:
* reject bad ChecksumType in options with InvalidArgument

This change split off from https://github.com/facebook/rocksdb/issues/9058 because context-aware checksum is
likely to be handled through different configuration than ChecksumType.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9069

Test Plan:
tests updated, and substantially expanded. Unit tests now check
that we don't accidentally change the values generated by the checksum
algorithms ("schema test") and that we properly handle
invalid/unrecognized checksum types in options or in file footer.

DBTestBase::ChangeOptions (etc.) updated from two to one configuration
changing from default CRC32c ChecksumType. The point of this test code
is to detect possible interactions among features, and the likelihood of
some bad interaction being detected by including configurations other
than XXH3 and CRC32c--and then not detected by stress/crash test--is
extremely low.

Stress/crash test also updated (manual run long enough to see it accepts
new checksum type). db_bench also updated for microbenchmarking
checksums.

 ### Performance microbenchmark (PORTABLE=0 DEBUG_LEVEL=0, Broadwell processor)

./db_bench -benchmarks=crc32c,xxhash,xxhash64,xxh3,crc32c,xxhash,xxhash64,xxh3,crc32c,xxhash,xxhash64,xxh3
crc32c       :       0.200 micros/op 5005220 ops/sec; 19551.6 MB/s (4096 per op)
xxhash       :       0.807 micros/op 1238408 ops/sec; 4837.5 MB/s (4096 per op)
xxhash64     :       0.421 micros/op 2376514 ops/sec; 9283.3 MB/s (4096 per op)
xxh3         :       0.171 micros/op 5858391 ops/sec; 22884.3 MB/s (4096 per op)
crc32c       :       0.206 micros/op 4859566 ops/sec; 18982.7 MB/s (4096 per op)
xxhash       :       0.793 micros/op 1260850 ops/sec; 4925.2 MB/s (4096 per op)
xxhash64     :       0.410 micros/op 2439182 ops/sec; 9528.1 MB/s (4096 per op)
xxh3         :       0.161 micros/op 6202872 ops/sec; 24230.0 MB/s (4096 per op)
crc32c       :       0.203 micros/op 4924686 ops/sec; 19237.1 MB/s (4096 per op)
xxhash       :       0.839 micros/op 1192388 ops/sec; 4657.8 MB/s (4096 per op)
xxhash64     :       0.424 micros/op 2357391 ops/sec; 9208.6 MB/s (4096 per op)
xxh3         :       0.162 micros/op 6182678 ops/sec; 24151.1 MB/s (4096 per op)

As you can see, especially once warmed up, xxh3 is fastest.

 ### Performance macrobenchmark (PORTABLE=0 DEBUG_LEVEL=0, Broadwell processor)

Test

    for I in `seq 1 50`; do for CHK in 0 1 2 3 4; do TEST_TMPDIR=/dev/shm/rocksdb$CHK ./db_bench -benchmarks=fillseq -memtablerep=vector -allow_concurrent_memtable_write=false -num=30000000 -checksum_type=$CHK 2>&1 | grep 'micros/op' | tee -a results-$CHK & done; wait; done

Results (ops/sec)

    for FILE in results*; do echo -n "$FILE "; awk '{ s += $5; c++; } END { print 1.0 * s / c; }' < $FILE; done

results-0 252118 # kNoChecksum
results-1 251588 # kCRC32c
results-2 251863 # kxxHash
results-3 252016 # kxxHash64
results-4 252038 # kXXH3

Reviewed By: mrambacher

Differential Revision: D31905249

Pulled By: pdillinger

fbshipit-source-id: cb9b998ebe2523fc7c400eedf62124a78bf4b4d1
2021-10-28 22:15:17 -07:00

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// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
// This source code is licensed under both the GPLv2 (found in the
// COPYING file in the root directory) and Apache 2.0 License
// (found in the LICENSE.Apache file in the root directory).
//
// Copyright (c) 2011 The LevelDB Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file. See the AUTHORS file for names of contributors.
#include "table/block_based/block_based_table_factory.h"
#include <stdint.h>
#include <cinttypes>
#include <memory>
#include <string>
#include "logging/logging.h"
#include "options/options_helper.h"
#include "port/port.h"
#include "rocksdb/cache.h"
#include "rocksdb/convenience.h"
#include "rocksdb/filter_policy.h"
#include "rocksdb/flush_block_policy.h"
#include "rocksdb/rocksdb_namespace.h"
#include "rocksdb/utilities/options_type.h"
#include "table/block_based/block_based_table_builder.h"
#include "table/block_based/block_based_table_reader.h"
#include "table/format.h"
#include "util/mutexlock.h"
#include "util/string_util.h"
namespace ROCKSDB_NAMESPACE {
void TailPrefetchStats::RecordEffectiveSize(size_t len) {
MutexLock l(&mutex_);
if (num_records_ < kNumTracked) {
num_records_++;
}
records_[next_++] = len;
if (next_ == kNumTracked) {
next_ = 0;
}
}
size_t TailPrefetchStats::GetSuggestedPrefetchSize() {
std::vector<size_t> sorted;
{
MutexLock l(&mutex_);
if (num_records_ == 0) {
return 0;
}
sorted.assign(records_, records_ + num_records_);
}
// Of the historic size, we find the maximum one that satisifis the condtiion
// that if prefetching all, less than 1/8 will be wasted.
std::sort(sorted.begin(), sorted.end());
// Assuming we have 5 data points, and after sorting it looks like this:
//
// +---+
// +---+ | |
// | | | |
// | | | |
// | | | |
// | | | |
// +---+ | | | |
// | | | | | |
// +---+ | | | | | |
// | | | | | | | |
// +---+ | | | | | | | |
// | | | | | | | | | |
// | | | | | | | | | |
// | | | | | | | | | |
// | | | | | | | | | |
// | | | | | | | | | |
// +---+ +---+ +---+ +---+ +---+
//
// and we use every of the value as a candidate, and estimate how much we
// wasted, compared to read. For example, when we use the 3rd record
// as candiate. This area is what we read:
// +---+
// +---+ | |
// | | | |
// | | | |
// | | | |
// | | | |
// *** *** *** ***+ *** *** *** *** **
// * | | | | | |
// +---+ | | | | | *
// * | | | | | | | |
// +---+ | | | | | | | *
// * | | | | X | | | | |
// | | | | | | | | | *
// * | | | | | | | | |
// | | | | | | | | | *
// * | | | | | | | | |
// *** *** ***-*** ***--*** ***--*** +****
// which is (size of the record) X (number of records).
//
// While wasted is this area:
// +---+
// +---+ | |
// | | | |
// | | | |
// | | | |
// | | | |
// *** *** *** ****---+ | | | |
// * * | | | | |
// * *-*** *** | | | | |
// * * | | | | | | |
// *--** *** | | | | | | |
// | | | | | X | | | | |
// | | | | | | | | | |
// | | | | | | | | | |
// | | | | | | | | | |
// | | | | | | | | | |
// +---+ +---+ +---+ +---+ +---+
//
// Which can be calculated iteratively.
// The difference between wasted using 4st and 3rd record, will
// be following area:
// +---+
// +--+ +-+ ++ +-+ +-+ +---+ | |
// + xxxxxxxxxxxxxxxxxxxxxxxx | | | |
// xxxxxxxxxxxxxxxxxxxxxxxx | | | |
// + xxxxxxxxxxxxxxxxxxxxxxxx | | | |
// | xxxxxxxxxxxxxxxxxxxxxxxx | | | |
// +-+ +-+ +-+ ++ +---+ +--+ | | |
// | | | | | | |
// +---+ ++ | | | | | |
// | | | | | | X | | |
// +---+ ++ | | | | | | | |
// | | | | | | | | | |
// | | | | | | | | | |
// | | | | | | | | | |
// | | | | | | | | | |
// | | | | | | | | | |
// +---+ +---+ +---+ +---+ +---+
//
// which will be the size difference between 4st and 3rd record,
// times 3, which is number of records before the 4st.
// Here we assume that all data within the prefetch range will be useful. In
// reality, it may not be the case when a partial block is inside the range,
// or there are data in the middle that is not read. We ignore those cases
// for simplicity.
assert(!sorted.empty());
size_t prev_size = sorted[0];
size_t max_qualified_size = sorted[0];
size_t wasted = 0;
for (size_t i = 1; i < sorted.size(); i++) {
size_t read = sorted[i] * sorted.size();
wasted += (sorted[i] - prev_size) * i;
if (wasted <= read / 8) {
max_qualified_size = sorted[i];
}
prev_size = sorted[i];
}
const size_t kMaxPrefetchSize = 512 * 1024; // Never exceed 512KB
return std::min(kMaxPrefetchSize, max_qualified_size);
}
#ifndef ROCKSDB_LITE
const std::string kOptNameMetadataCacheOpts = "metadata_cache_options";
static std::unordered_map<std::string, PinningTier>
pinning_tier_type_string_map = {
{"kFallback", PinningTier::kFallback},
{"kNone", PinningTier::kNone},
{"kFlushedAndSimilar", PinningTier::kFlushedAndSimilar},
{"kAll", PinningTier::kAll}};
static std::unordered_map<std::string, BlockBasedTableOptions::IndexType>
block_base_table_index_type_string_map = {
{"kBinarySearch", BlockBasedTableOptions::IndexType::kBinarySearch},
{"kHashSearch", BlockBasedTableOptions::IndexType::kHashSearch},
{"kTwoLevelIndexSearch",
BlockBasedTableOptions::IndexType::kTwoLevelIndexSearch},
{"kBinarySearchWithFirstKey",
BlockBasedTableOptions::IndexType::kBinarySearchWithFirstKey}};
static std::unordered_map<std::string,
BlockBasedTableOptions::DataBlockIndexType>
block_base_table_data_block_index_type_string_map = {
{"kDataBlockBinarySearch",
BlockBasedTableOptions::DataBlockIndexType::kDataBlockBinarySearch},
{"kDataBlockBinaryAndHash",
BlockBasedTableOptions::DataBlockIndexType::kDataBlockBinaryAndHash}};
static std::unordered_map<std::string,
BlockBasedTableOptions::IndexShorteningMode>
block_base_table_index_shortening_mode_string_map = {
{"kNoShortening",
BlockBasedTableOptions::IndexShorteningMode::kNoShortening},
{"kShortenSeparators",
BlockBasedTableOptions::IndexShorteningMode::kShortenSeparators},
{"kShortenSeparatorsAndSuccessor",
BlockBasedTableOptions::IndexShorteningMode::
kShortenSeparatorsAndSuccessor}};
static std::unordered_map<std::string, OptionTypeInfo>
metadata_cache_options_type_info = {
{"top_level_index_pinning",
OptionTypeInfo::Enum<PinningTier>(
offsetof(struct MetadataCacheOptions, top_level_index_pinning),
&pinning_tier_type_string_map)},
{"partition_pinning",
OptionTypeInfo::Enum<PinningTier>(
offsetof(struct MetadataCacheOptions, partition_pinning),
&pinning_tier_type_string_map)},
{"unpartitioned_pinning",
OptionTypeInfo::Enum<PinningTier>(
offsetof(struct MetadataCacheOptions, unpartitioned_pinning),
&pinning_tier_type_string_map)}};
static std::unordered_map<std::string,
BlockBasedTableOptions::PrepopulateBlockCache>
block_base_table_prepopulate_block_cache_string_map = {
{"kDisable", BlockBasedTableOptions::PrepopulateBlockCache::kDisable},
{"kFlushOnly",
BlockBasedTableOptions::PrepopulateBlockCache::kFlushOnly}};
#endif // ROCKSDB_LITE
static std::unordered_map<std::string, OptionTypeInfo>
block_based_table_type_info = {
#ifndef ROCKSDB_LITE
/* currently not supported
std::shared_ptr<Cache> block_cache = nullptr;
std::shared_ptr<Cache> block_cache_compressed = nullptr;
*/
{"flush_block_policy_factory",
OptionTypeInfo::AsCustomSharedPtr<FlushBlockPolicyFactory>(
offsetof(struct BlockBasedTableOptions,
flush_block_policy_factory),
OptionVerificationType::kByName, OptionTypeFlags::kCompareNever)},
{"cache_index_and_filter_blocks",
{offsetof(struct BlockBasedTableOptions,
cache_index_and_filter_blocks),
OptionType::kBoolean, OptionVerificationType::kNormal,
OptionTypeFlags::kNone}},
{"cache_index_and_filter_blocks_with_high_priority",
{offsetof(struct BlockBasedTableOptions,
cache_index_and_filter_blocks_with_high_priority),
OptionType::kBoolean, OptionVerificationType::kNormal,
OptionTypeFlags::kNone}},
{"pin_l0_filter_and_index_blocks_in_cache",
{offsetof(struct BlockBasedTableOptions,
pin_l0_filter_and_index_blocks_in_cache),
OptionType::kBoolean, OptionVerificationType::kNormal,
OptionTypeFlags::kNone}},
{"index_type", OptionTypeInfo::Enum<BlockBasedTableOptions::IndexType>(
offsetof(struct BlockBasedTableOptions, index_type),
&block_base_table_index_type_string_map)},
{"hash_index_allow_collision",
{offsetof(struct BlockBasedTableOptions, hash_index_allow_collision),
OptionType::kBoolean, OptionVerificationType::kNormal,
OptionTypeFlags::kNone}},
{"data_block_index_type",
OptionTypeInfo::Enum<BlockBasedTableOptions::DataBlockIndexType>(
offsetof(struct BlockBasedTableOptions, data_block_index_type),
&block_base_table_data_block_index_type_string_map)},
{"index_shortening",
OptionTypeInfo::Enum<BlockBasedTableOptions::IndexShorteningMode>(
offsetof(struct BlockBasedTableOptions, index_shortening),
&block_base_table_index_shortening_mode_string_map)},
{"data_block_hash_table_util_ratio",
{offsetof(struct BlockBasedTableOptions,
data_block_hash_table_util_ratio),
OptionType::kDouble, OptionVerificationType::kNormal,
OptionTypeFlags::kNone}},
{"checksum",
{offsetof(struct BlockBasedTableOptions, checksum),
OptionType::kChecksumType, OptionVerificationType::kNormal,
OptionTypeFlags::kNone}},
{"no_block_cache",
{offsetof(struct BlockBasedTableOptions, no_block_cache),
OptionType::kBoolean, OptionVerificationType::kNormal,
OptionTypeFlags::kNone}},
{"block_size",
{offsetof(struct BlockBasedTableOptions, block_size),
OptionType::kSizeT, OptionVerificationType::kNormal,
OptionTypeFlags::kMutable}},
{"block_size_deviation",
{offsetof(struct BlockBasedTableOptions, block_size_deviation),
OptionType::kInt, OptionVerificationType::kNormal,
OptionTypeFlags::kNone}},
{"block_restart_interval",
{offsetof(struct BlockBasedTableOptions, block_restart_interval),
OptionType::kInt, OptionVerificationType::kNormal,
OptionTypeFlags::kMutable}},
{"index_block_restart_interval",
{offsetof(struct BlockBasedTableOptions, index_block_restart_interval),
OptionType::kInt, OptionVerificationType::kNormal,
OptionTypeFlags::kNone}},
{"index_per_partition",
{0, OptionType::kUInt64T, OptionVerificationType::kDeprecated,
OptionTypeFlags::kNone}},
{"metadata_block_size",
{offsetof(struct BlockBasedTableOptions, metadata_block_size),
OptionType::kUInt64T, OptionVerificationType::kNormal,
OptionTypeFlags::kNone}},
{"partition_filters",
{offsetof(struct BlockBasedTableOptions, partition_filters),
OptionType::kBoolean, OptionVerificationType::kNormal,
OptionTypeFlags::kNone}},
{"optimize_filters_for_memory",
{offsetof(struct BlockBasedTableOptions, optimize_filters_for_memory),
OptionType::kBoolean, OptionVerificationType::kNormal,
OptionTypeFlags::kNone}},
{"filter_policy",
{offsetof(struct BlockBasedTableOptions, filter_policy),
OptionType::kUnknown, OptionVerificationType::kByNameAllowFromNull,
OptionTypeFlags::kNone,
// Parses the Filter policy
[](const ConfigOptions& opts, const std::string&,
const std::string& value, void* addr) {
auto* policy =
static_cast<std::shared_ptr<const FilterPolicy>*>(addr);
return FilterPolicy::CreateFromString(opts, value, policy);
},
// Converts the FilterPolicy to its string representation
[](const ConfigOptions&, const std::string&, const void* addr,
std::string* value) {
const auto* policy =
static_cast<const std::shared_ptr<const FilterPolicy>*>(addr);
if (policy->get()) {
*value = (*policy)->Name();
} else {
*value = kNullptrString;
}
return Status::OK();
},
// Compares two FilterPolicy objects for equality
[](const ConfigOptions&, const std::string&, const void* addr1,
const void* addr2, std::string*) {
const auto* policy1 =
static_cast<const std::shared_ptr<const FilterPolicy>*>(addr1)
->get();
const auto* policy2 =
static_cast<const std::shared_ptr<FilterPolicy>*>(addr2)->get();
if (policy1 == policy2) {
return true;
} else if (policy1 != nullptr && policy2 != nullptr) {
return (strcmp(policy1->Name(), policy2->Name()) == 0);
} else {
return false;
}
}}},
{"whole_key_filtering",
{offsetof(struct BlockBasedTableOptions, whole_key_filtering),
OptionType::kBoolean, OptionVerificationType::kNormal,
OptionTypeFlags::kNone}},
{"skip_table_builder_flush",
{0, OptionType::kBoolean, OptionVerificationType::kDeprecated,
OptionTypeFlags::kNone}},
{"format_version",
{offsetof(struct BlockBasedTableOptions, format_version),
OptionType::kUInt32T, OptionVerificationType::kNormal,
OptionTypeFlags::kNone}},
{"verify_compression",
{offsetof(struct BlockBasedTableOptions, verify_compression),
OptionType::kBoolean, OptionVerificationType::kNormal,
OptionTypeFlags::kNone}},
{"read_amp_bytes_per_bit",
{offsetof(struct BlockBasedTableOptions, read_amp_bytes_per_bit),
OptionType::kUInt32T, OptionVerificationType::kNormal,
OptionTypeFlags::kNone,
[](const ConfigOptions& /*opts*/, const std::string& /*name*/,
const std::string& value, void* addr) {
// A workaround to fix a bug in 6.10, 6.11, 6.12, 6.13
// and 6.14. The bug will write out 8 bytes to OPTIONS file from the
// starting address of BlockBasedTableOptions.read_amp_bytes_per_bit
// which is actually a uint32. Consequently, the value of
// read_amp_bytes_per_bit written in the OPTIONS file is wrong.
// From 6.15, RocksDB will try to parse the read_amp_bytes_per_bit
// from OPTIONS file as a uint32. To be able to load OPTIONS file
// generated by affected releases before the fix, we need to
// manually parse read_amp_bytes_per_bit with this special hack.
uint64_t read_amp_bytes_per_bit = ParseUint64(value);
*(static_cast<uint32_t*>(addr)) =
static_cast<uint32_t>(read_amp_bytes_per_bit);
return Status::OK();
}}},
{"enable_index_compression",
{offsetof(struct BlockBasedTableOptions, enable_index_compression),
OptionType::kBoolean, OptionVerificationType::kNormal,
OptionTypeFlags::kNone}},
{"block_align",
{offsetof(struct BlockBasedTableOptions, block_align),
OptionType::kBoolean, OptionVerificationType::kNormal,
OptionTypeFlags::kNone}},
{"pin_top_level_index_and_filter",
{offsetof(struct BlockBasedTableOptions,
pin_top_level_index_and_filter),
OptionType::kBoolean, OptionVerificationType::kNormal,
OptionTypeFlags::kNone}},
{kOptNameMetadataCacheOpts,
OptionTypeInfo::Struct(
kOptNameMetadataCacheOpts, &metadata_cache_options_type_info,
offsetof(struct BlockBasedTableOptions, metadata_cache_options),
OptionVerificationType::kNormal, OptionTypeFlags::kNone)},
{"block_cache",
{offsetof(struct BlockBasedTableOptions, block_cache),
OptionType::kUnknown, OptionVerificationType::kNormal,
(OptionTypeFlags::kCompareNever | OptionTypeFlags::kDontSerialize),
// Parses the input vsalue as a Cache
[](const ConfigOptions& opts, const std::string&,
const std::string& value, void* addr) {
auto* cache = static_cast<std::shared_ptr<Cache>*>(addr);
return Cache::CreateFromString(opts, value, cache);
}}},
{"block_cache_compressed",
{offsetof(struct BlockBasedTableOptions, block_cache_compressed),
OptionType::kUnknown, OptionVerificationType::kNormal,
(OptionTypeFlags::kCompareNever | OptionTypeFlags::kDontSerialize),
// Parses the input vsalue as a Cache
[](const ConfigOptions& opts, const std::string&,
const std::string& value, void* addr) {
auto* cache = static_cast<std::shared_ptr<Cache>*>(addr);
return Cache::CreateFromString(opts, value, cache);
}}},
{"max_auto_readahead_size",
{offsetof(struct BlockBasedTableOptions, max_auto_readahead_size),
OptionType::kSizeT, OptionVerificationType::kNormal,
OptionTypeFlags::kMutable}},
{"prepopulate_block_cache",
OptionTypeInfo::Enum<BlockBasedTableOptions::PrepopulateBlockCache>(
offsetof(struct BlockBasedTableOptions, prepopulate_block_cache),
&block_base_table_prepopulate_block_cache_string_map,
OptionTypeFlags::kMutable)},
#endif // ROCKSDB_LITE
};
// TODO(myabandeh): We should return an error instead of silently changing the
// options
BlockBasedTableFactory::BlockBasedTableFactory(
const BlockBasedTableOptions& _table_options)
: table_options_(_table_options) {
InitializeOptions();
RegisterOptions(&table_options_, &block_based_table_type_info);
}
void BlockBasedTableFactory::InitializeOptions() {
if (table_options_.flush_block_policy_factory == nullptr) {
table_options_.flush_block_policy_factory.reset(
new FlushBlockBySizePolicyFactory());
}
if (table_options_.no_block_cache) {
table_options_.block_cache.reset();
} else if (table_options_.block_cache == nullptr) {
LRUCacheOptions co;
co.capacity = 8 << 20;
// It makes little sense to pay overhead for mid-point insertion while the
// block size is only 8MB.
co.high_pri_pool_ratio = 0.0;
table_options_.block_cache = NewLRUCache(co);
}
if (table_options_.block_size_deviation < 0 ||
table_options_.block_size_deviation > 100) {
table_options_.block_size_deviation = 0;
}
if (table_options_.block_restart_interval < 1) {
table_options_.block_restart_interval = 1;
}
if (table_options_.index_block_restart_interval < 1) {
table_options_.index_block_restart_interval = 1;
}
if (table_options_.index_type == BlockBasedTableOptions::kHashSearch &&
table_options_.index_block_restart_interval != 1) {
// Currently kHashSearch is incompatible with index_block_restart_interval > 1
table_options_.index_block_restart_interval = 1;
}
if (table_options_.partition_filters &&
table_options_.index_type !=
BlockBasedTableOptions::kTwoLevelIndexSearch) {
// We do not support partitioned filters without partitioning indexes
table_options_.partition_filters = false;
}
}
Status BlockBasedTableFactory::PrepareOptions(const ConfigOptions& opts) {
InitializeOptions();
return TableFactory::PrepareOptions(opts);
}
Status BlockBasedTableFactory::NewTableReader(
const ReadOptions& ro, const TableReaderOptions& table_reader_options,
std::unique_ptr<RandomAccessFileReader>&& file, uint64_t file_size,
std::unique_ptr<TableReader>* table_reader,
bool prefetch_index_and_filter_in_cache) const {
return BlockBasedTable::Open(
ro, table_reader_options.ioptions, table_reader_options.env_options,
table_options_, table_reader_options.internal_comparator, std::move(file),
file_size, table_reader, table_reader_options.prefix_extractor,
prefetch_index_and_filter_in_cache, table_reader_options.skip_filters,
table_reader_options.level, table_reader_options.immortal,
table_reader_options.largest_seqno,
table_reader_options.force_direct_prefetch, &tail_prefetch_stats_,
table_reader_options.block_cache_tracer,
table_reader_options.max_file_size_for_l0_meta_pin,
table_reader_options.cur_db_session_id,
table_reader_options.cur_file_num);
}
TableBuilder* BlockBasedTableFactory::NewTableBuilder(
const TableBuilderOptions& table_builder_options,
WritableFileWriter* file) const {
return new BlockBasedTableBuilder(table_options_, table_builder_options,
file);
}
Status BlockBasedTableFactory::ValidateOptions(
const DBOptions& db_opts, const ColumnFamilyOptions& cf_opts) const {
if (table_options_.index_type == BlockBasedTableOptions::kHashSearch &&
cf_opts.prefix_extractor == nullptr) {
return Status::InvalidArgument(
"Hash index is specified for block-based "
"table, but prefix_extractor is not given");
}
if (table_options_.cache_index_and_filter_blocks &&
table_options_.no_block_cache) {
return Status::InvalidArgument(
"Enable cache_index_and_filter_blocks, "
", but block cache is disabled");
}
if (table_options_.pin_l0_filter_and_index_blocks_in_cache &&
table_options_.no_block_cache) {
return Status::InvalidArgument(
"Enable pin_l0_filter_and_index_blocks_in_cache, "
", but block cache is disabled");
}
if (!BlockBasedTableSupportedVersion(table_options_.format_version)) {
return Status::InvalidArgument(
"Unsupported BlockBasedTable format_version. Please check "
"include/rocksdb/table.h for more info");
}
if (table_options_.block_align && (cf_opts.compression != kNoCompression)) {
return Status::InvalidArgument(
"Enable block_align, but compression "
"enabled");
}
if (table_options_.block_align &&
(table_options_.block_size & (table_options_.block_size - 1))) {
return Status::InvalidArgument(
"Block alignment requested but block size is not a power of 2");
}
if (table_options_.block_size > port::kMaxUint32) {
return Status::InvalidArgument(
"block size exceeds maximum number (4GiB) allowed");
}
if (table_options_.data_block_index_type ==
BlockBasedTableOptions::kDataBlockBinaryAndHash &&
table_options_.data_block_hash_table_util_ratio <= 0) {
return Status::InvalidArgument(
"data_block_hash_table_util_ratio should be greater than 0 when "
"data_block_index_type is set to kDataBlockBinaryAndHash");
}
if (db_opts.unordered_write && cf_opts.max_successive_merges > 0) {
// TODO(myabandeh): support it
return Status::InvalidArgument(
"max_successive_merges larger than 0 is currently inconsistent with "
"unordered_write");
}
std::string garbage;
if (!SerializeEnum<ChecksumType>(checksum_type_string_map,
table_options_.checksum, &garbage)) {
return Status::InvalidArgument(
"Unrecognized ChecksumType for checksum: " +
ROCKSDB_NAMESPACE::ToString(
static_cast<uint32_t>(table_options_.checksum)));
}
return TableFactory::ValidateOptions(db_opts, cf_opts);
}
std::string BlockBasedTableFactory::GetPrintableOptions() const {
std::string ret;
ret.reserve(20000);
const int kBufferSize = 200;
char buffer[kBufferSize];
snprintf(buffer, kBufferSize, " flush_block_policy_factory: %s (%p)\n",
table_options_.flush_block_policy_factory->Name(),
static_cast<void*>(table_options_.flush_block_policy_factory.get()));
ret.append(buffer);
snprintf(buffer, kBufferSize, " cache_index_and_filter_blocks: %d\n",
table_options_.cache_index_and_filter_blocks);
ret.append(buffer);
snprintf(buffer, kBufferSize,
" cache_index_and_filter_blocks_with_high_priority: %d\n",
table_options_.cache_index_and_filter_blocks_with_high_priority);
ret.append(buffer);
snprintf(buffer, kBufferSize,
" pin_l0_filter_and_index_blocks_in_cache: %d\n",
table_options_.pin_l0_filter_and_index_blocks_in_cache);
ret.append(buffer);
snprintf(buffer, kBufferSize, " pin_top_level_index_and_filter: %d\n",
table_options_.pin_top_level_index_and_filter);
ret.append(buffer);
snprintf(buffer, kBufferSize, " index_type: %d\n",
table_options_.index_type);
ret.append(buffer);
snprintf(buffer, kBufferSize, " data_block_index_type: %d\n",
table_options_.data_block_index_type);
ret.append(buffer);
snprintf(buffer, kBufferSize, " index_shortening: %d\n",
static_cast<int>(table_options_.index_shortening));
ret.append(buffer);
snprintf(buffer, kBufferSize, " data_block_hash_table_util_ratio: %lf\n",
table_options_.data_block_hash_table_util_ratio);
ret.append(buffer);
snprintf(buffer, kBufferSize, " hash_index_allow_collision: %d\n",
table_options_.hash_index_allow_collision);
ret.append(buffer);
snprintf(buffer, kBufferSize, " checksum: %d\n", table_options_.checksum);
ret.append(buffer);
snprintf(buffer, kBufferSize, " no_block_cache: %d\n",
table_options_.no_block_cache);
ret.append(buffer);
snprintf(buffer, kBufferSize, " block_cache: %p\n",
static_cast<void*>(table_options_.block_cache.get()));
ret.append(buffer);
if (table_options_.block_cache) {
const char* block_cache_name = table_options_.block_cache->Name();
if (block_cache_name != nullptr) {
snprintf(buffer, kBufferSize, " block_cache_name: %s\n",
block_cache_name);
ret.append(buffer);
}
ret.append(" block_cache_options:\n");
ret.append(table_options_.block_cache->GetPrintableOptions());
}
snprintf(buffer, kBufferSize, " block_cache_compressed: %p\n",
static_cast<void*>(table_options_.block_cache_compressed.get()));
ret.append(buffer);
if (table_options_.block_cache_compressed) {
const char* block_cache_compressed_name =
table_options_.block_cache_compressed->Name();
if (block_cache_compressed_name != nullptr) {
snprintf(buffer, kBufferSize, " block_cache_name: %s\n",
block_cache_compressed_name);
ret.append(buffer);
}
ret.append(" block_cache_compressed_options:\n");
ret.append(table_options_.block_cache_compressed->GetPrintableOptions());
}
snprintf(buffer, kBufferSize, " persistent_cache: %p\n",
static_cast<void*>(table_options_.persistent_cache.get()));
ret.append(buffer);
if (table_options_.persistent_cache) {
snprintf(buffer, kBufferSize, " persistent_cache_options:\n");
ret.append(buffer);
ret.append(table_options_.persistent_cache->GetPrintableOptions());
}
snprintf(buffer, kBufferSize, " block_size: %" ROCKSDB_PRIszt "\n",
table_options_.block_size);
ret.append(buffer);
snprintf(buffer, kBufferSize, " block_size_deviation: %d\n",
table_options_.block_size_deviation);
ret.append(buffer);
snprintf(buffer, kBufferSize, " block_restart_interval: %d\n",
table_options_.block_restart_interval);
ret.append(buffer);
snprintf(buffer, kBufferSize, " index_block_restart_interval: %d\n",
table_options_.index_block_restart_interval);
ret.append(buffer);
snprintf(buffer, kBufferSize, " metadata_block_size: %" PRIu64 "\n",
table_options_.metadata_block_size);
ret.append(buffer);
snprintf(buffer, kBufferSize, " partition_filters: %d\n",
table_options_.partition_filters);
ret.append(buffer);
snprintf(buffer, kBufferSize, " use_delta_encoding: %d\n",
table_options_.use_delta_encoding);
ret.append(buffer);
snprintf(buffer, kBufferSize, " filter_policy: %s\n",
table_options_.filter_policy == nullptr
? "nullptr"
: table_options_.filter_policy->Name());
ret.append(buffer);
snprintf(buffer, kBufferSize, " whole_key_filtering: %d\n",
table_options_.whole_key_filtering);
ret.append(buffer);
snprintf(buffer, kBufferSize, " verify_compression: %d\n",
table_options_.verify_compression);
ret.append(buffer);
snprintf(buffer, kBufferSize, " read_amp_bytes_per_bit: %d\n",
table_options_.read_amp_bytes_per_bit);
ret.append(buffer);
snprintf(buffer, kBufferSize, " format_version: %d\n",
table_options_.format_version);
ret.append(buffer);
snprintf(buffer, kBufferSize, " enable_index_compression: %d\n",
table_options_.enable_index_compression);
ret.append(buffer);
snprintf(buffer, kBufferSize, " block_align: %d\n",
table_options_.block_align);
ret.append(buffer);
snprintf(buffer, kBufferSize,
" max_auto_readahead_size: %" ROCKSDB_PRIszt "\n",
table_options_.max_auto_readahead_size);
ret.append(buffer);
snprintf(buffer, kBufferSize, " prepopulate_block_cache: %d\n",
static_cast<int>(table_options_.prepopulate_block_cache));
ret.append(buffer);
return ret;
}
const void* BlockBasedTableFactory::GetOptionsPtr(
const std::string& name) const {
if (name == kBlockCacheOpts()) {
if (table_options_.no_block_cache) {
return nullptr;
} else {
return table_options_.block_cache.get();
}
} else {
return TableFactory::GetOptionsPtr(name);
}
}
#ifndef ROCKSDB_LITE
// Take a default BlockBasedTableOptions "table_options" in addition to a
// map "opts_map" of option name to option value to construct the new
// BlockBasedTableOptions "new_table_options".
//
// Below are the instructions of how to config some non-primitive-typed
// options in BlockBasedTableOptions:
//
// * filter_policy:
// We currently only support the following FilterPolicy in the convenience
// functions:
// - BloomFilter: use "bloomfilter:[bits_per_key]:[use_block_based_builder]"
// to specify BloomFilter. The above string is equivalent to calling
// NewBloomFilterPolicy(bits_per_key, use_block_based_builder).
// [Example]:
// - Pass {"filter_policy", "bloomfilter:4:true"} in
// GetBlockBasedTableOptionsFromMap to use a BloomFilter with 4-bits
// per key and use_block_based_builder enabled.
//
// * block_cache / block_cache_compressed:
// We currently only support LRU cache in the GetOptions API. The LRU
// cache can be set by directly specifying its size.
// [Example]:
// - Passing {"block_cache", "1M"} in GetBlockBasedTableOptionsFromMap is
// equivalent to setting block_cache using NewLRUCache(1024 * 1024).
//
// @param table_options the default options of the output "new_table_options".
// @param opts_map an option name to value map for specifying how
// "new_table_options" should be set.
// @param new_table_options the resulting options based on "table_options"
// with the change specified in "opts_map".
// @param input_strings_escaped when set to true, each escaped characters
// prefixed by '\' in the values of the opts_map will be further converted
// back to the raw string before assigning to the associated options.
// @param ignore_unknown_options when set to true, unknown options are ignored
// instead of resulting in an unknown-option error.
// @return Status::OK() on success. Otherwise, a non-ok status indicating
// error will be returned, and "new_table_options" will be set to
// "table_options".
Status BlockBasedTableFactory::ParseOption(const ConfigOptions& config_options,
const OptionTypeInfo& opt_info,
const std::string& opt_name,
const std::string& opt_value,
void* opt_ptr) {
Status status = TableFactory::ParseOption(config_options, opt_info, opt_name,
opt_value, opt_ptr);
if (config_options.input_strings_escaped && !status.ok()) { // Got an error
// !input_strings_escaped indicates the old API, where everything is
// parsable.
if (opt_info.IsByName()) {
status = Status::OK();
}
}
return status;
}
Status GetBlockBasedTableOptionsFromString(
const BlockBasedTableOptions& table_options, const std::string& opts_str,
BlockBasedTableOptions* new_table_options) {
ConfigOptions config_options;
config_options.input_strings_escaped = false;
config_options.ignore_unknown_options = false;
config_options.invoke_prepare_options = false;
return GetBlockBasedTableOptionsFromString(config_options, table_options,
opts_str, new_table_options);
}
Status GetBlockBasedTableOptionsFromString(
const ConfigOptions& config_options,
const BlockBasedTableOptions& table_options, const std::string& opts_str,
BlockBasedTableOptions* new_table_options) {
std::unordered_map<std::string, std::string> opts_map;
Status s = StringToMap(opts_str, &opts_map);
if (!s.ok()) {
return s;
}
s = GetBlockBasedTableOptionsFromMap(config_options, table_options, opts_map,
new_table_options);
// Translate any errors (NotFound, NotSupported, to InvalidArgument
if (s.ok() || s.IsInvalidArgument()) {
return s;
} else {
return Status::InvalidArgument(s.getState());
}
}
Status GetBlockBasedTableOptionsFromMap(
const BlockBasedTableOptions& table_options,
const std::unordered_map<std::string, std::string>& opts_map,
BlockBasedTableOptions* new_table_options, bool input_strings_escaped,
bool ignore_unknown_options) {
ConfigOptions config_options;
config_options.input_strings_escaped = input_strings_escaped;
config_options.ignore_unknown_options = ignore_unknown_options;
config_options.invoke_prepare_options = false;
return GetBlockBasedTableOptionsFromMap(config_options, table_options,
opts_map, new_table_options);
}
Status GetBlockBasedTableOptionsFromMap(
const ConfigOptions& config_options,
const BlockBasedTableOptions& table_options,
const std::unordered_map<std::string, std::string>& opts_map,
BlockBasedTableOptions* new_table_options) {
assert(new_table_options);
BlockBasedTableFactory bbtf(table_options);
Status s = bbtf.ConfigureFromMap(config_options, opts_map);
if (s.ok()) {
*new_table_options = *(bbtf.GetOptions<BlockBasedTableOptions>());
} else {
*new_table_options = table_options;
}
return s;
}
#endif // !ROCKSDB_LITE
TableFactory* NewBlockBasedTableFactory(
const BlockBasedTableOptions& _table_options) {
return new BlockBasedTableFactory(_table_options);
}
const std::string BlockBasedTablePropertyNames::kIndexType =
"rocksdb.block.based.table.index.type";
const std::string BlockBasedTablePropertyNames::kWholeKeyFiltering =
"rocksdb.block.based.table.whole.key.filtering";
const std::string BlockBasedTablePropertyNames::kPrefixFiltering =
"rocksdb.block.based.table.prefix.filtering";
const std::string kHashIndexPrefixesBlock = "rocksdb.hashindex.prefixes";
const std::string kHashIndexPrefixesMetadataBlock =
"rocksdb.hashindex.metadata";
const std::string kPropTrue = "1";
const std::string kPropFalse = "0";
} // namespace ROCKSDB_NAMESPACE
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