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rocksdb/table/block_based/block_based_table_factory.cc
Hui Xiao 920386f2b7 Detect (new) Bloom/Ribbon Filter construction corruption (#9342) 
Summary:
Note: rebase on and merge after https://github.com/facebook/rocksdb/pull/9349, https://github.com/facebook/rocksdb/pull/9345, (optional) https://github.com/facebook/rocksdb/pull/9393
**Context:**
(Quoted from pdillinger) Layers of information during new Bloom/Ribbon Filter construction in building block-based tables includes the following:
a) set of keys to add to filter
b) set of hashes to add to filter (64-bit hash applied to each key)
c) set of Bloom indices to set in filter, with duplicates
d) set of Bloom indices to set in filter, deduplicated
e) final filter and its checksum

This PR aims to detect corruption (e.g, unexpected hardware/software corruption on data structures residing in the memory for a long time) from b) to e) and leave a) as future works for application level.
- b)'s corruption is detected by verifying the xor checksum of the hash entries calculated as the entries accumulate before being added to the filter. (i.e, `XXPH3FilterBitsBuilder::MaybeVerifyHashEntriesChecksum()`)
- c) - e)'s corruption is detected by verifying the hash entries indeed exists in the constructed filter by re-querying these hash entries in the filter (i.e, `FilterBitsBuilder::MaybePostVerify()`) after computing the block checksum (except for PartitionFilter, which is done right after each `FilterBitsBuilder::Finish` for impl simplicity - see code comment for more). For this stage of detection, we assume hash entries are not corrupted after checking on b) since the time interval from b) to c) is relatively short IMO.

Option to enable this feature of detection is `BlockBasedTableOptions::detect_filter_construct_corruption` which is false by default.

**Summary:**
- Implemented new functions `XXPH3FilterBitsBuilder::MaybeVerifyHashEntriesChecksum()` and `FilterBitsBuilder::MaybePostVerify()`
- Ensured hash entries, final filter and banding and their [cache reservation ](https://github.com/facebook/rocksdb/issues/9073) are released properly despite corruption
   - See [Filter.construction.artifacts.release.point.pdf ](https://github.com/facebook/rocksdb/files/7923487/Design.Filter.construction.artifacts.release.point.pdf) for high-level design
   -  Bundled and refactored hash entries's related artifact in XXPH3FilterBitsBuilder into `HashEntriesInfo` for better control on lifetime of these artifact during `SwapEntires`, `ResetEntries`
- Ensured RocksDB block-based table builder calls `FilterBitsBuilder::MaybePostVerify()` after constructing the filter by `FilterBitsBuilder::Finish()`
- When encountering such filter construction corruption, stop writing the filter content to files and mark such a block-based table building non-ok by storing the corruption status in the builder.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9342

Test Plan:
- Added new unit test `DBFilterConstructionCorruptionTestWithParam.DetectCorruption`
- Included this new feature in `DBFilterConstructionReserveMemoryTestWithParam.ReserveMemory` as this feature heavily touch ReserveMemory's impl
   - For fallback case, I run `./filter_bench -impl=3 -detect_filter_construct_corruption=true -reserve_table_builder_memory=true -strict_capacity_limit=true  -quick -runs 10 | grep 'Build avg'` to make sure nothing break.
- Added to `filter_bench`: increased filter construction time by **30%**, mostly by `MaybePostVerify()`
   -  FastLocalBloom
       - Before change: `./filter_bench -impl=2 -quick -runs 10 | grep 'Build avg'`: **28.86643s**
       - After change:
          -  `./filter_bench -impl=2 -detect_filter_construct_corruption=false -quick -runs 10 | grep 'Build avg'` (expect a tiny increase due to MaybePostVerify is always called regardless): **27.6644s (-4% perf improvement might be due to now we don't drop bloom hash entry in `AddAllEntries` along iteration but in bulk later, same with the bypassing-MaybePostVerify case below)**
          - `./filter_bench -impl=2 -detect_filter_construct_corruption=true -quick -runs 10 | grep 'Build avg'` (expect acceptable increase): **34.41159s (+20%)**
          - `./filter_bench -impl=2 -detect_filter_construct_corruption=true -quick -runs 10 | grep 'Build avg'` (by-passing MaybePostVerify, expect minor increase): **27.13431s (-6%)**
    -  Standard128Ribbon
       - Before change: `./filter_bench -impl=3 -quick -runs 10 | grep 'Build avg'`: **122.5384s**
       - After change:
          - `./filter_bench -impl=3 -detect_filter_construct_corruption=false -quick -runs 10 | grep 'Build avg'` (expect a tiny increase due to MaybePostVerify is always called regardless - verified by removing MaybePostVerify under this case and found only +-1ns difference): **124.3588s (+2%)**
          - `./filter_bench -impl=3 -detect_filter_construct_corruption=true -quick -runs 10 | grep 'Build avg'`(expect acceptable increase): **159.4946s (+30%)**
          - `./filter_bench -impl=3 -detect_filter_construct_corruption=true -quick -runs 10 | grep 'Build avg'`(by-passing MaybePostVerify, expect minor increase) : **125.258s (+2%)**
- Added to `db_stress`: `make crash_test`, `./db_stress --detect_filter_construct_corruption=true`
- Manually smoke-tested: manually corrupted the filter construction in some db level tests with basic PUT and background flush. As expected, the error did get returned to users in subsequent PUT and Flush status.

Reviewed By: pdillinger

Differential Revision: D33746928

Pulled By: hx235

fbshipit-source-id: cb056426be5a7debc1cd16f23bc250f36a08ca57
2022-02-01 17:42:35 -08:00

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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 "cache/cache_entry_roles.h"
#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/table.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}},
{"detect_filter_construct_corruption",
{offsetof(struct BlockBasedTableOptions,
detect_filter_construct_corruption),
OptionType::kBoolean, OptionVerificationType::kNormal,
OptionTypeFlags::kNone}},
{"reserve_table_builder_memory",
{offsetof(struct BlockBasedTableOptions, reserve_table_builder_memory),
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);
}
namespace {
// Different cache kinds use the same keys for physically different values, so
// they must not share an underlying key space with each other.
Status CheckCacheOptionCompatibility(const BlockBasedTableOptions& bbto) {
int cache_count = (bbto.block_cache != nullptr) +
(bbto.block_cache_compressed != nullptr) +
(bbto.persistent_cache != nullptr);
if (cache_count <= 1) {
// Nothing to share / overlap
return Status::OK();
}
// Simple pointer equality
if (bbto.block_cache == bbto.block_cache_compressed) {
return Status::InvalidArgument(
"block_cache same as block_cache_compressed not currently supported, "
"and would be bad for performance anyway");
}
// More complex test of shared key space, in case the instances are wrappers
// for some shared underlying cache.
std::string sentinel_key(size_t{1}, '\0');
static char kRegularBlockCacheMarker = 'b';
static char kCompressedBlockCacheMarker = 'c';
static char kPersistentCacheMarker = 'p';
if (bbto.block_cache) {
bbto.block_cache
->Insert(Slice(sentinel_key), &kRegularBlockCacheMarker, 1,
GetNoopDeleterForRole<CacheEntryRole::kMisc>())
.PermitUncheckedError();
}
if (bbto.block_cache_compressed) {
bbto.block_cache_compressed
->Insert(Slice(sentinel_key), &kCompressedBlockCacheMarker, 1,
GetNoopDeleterForRole<CacheEntryRole::kMisc>())
.PermitUncheckedError();
}
if (bbto.persistent_cache) {
// Note: persistent cache copies the data, not keeping the pointer
bbto.persistent_cache
->Insert(Slice(sentinel_key), &kPersistentCacheMarker, 1)
.PermitUncheckedError();
}
// If we get something different from what we inserted, that indicates
// dangerously overlapping key spaces.
if (bbto.block_cache) {
auto handle = bbto.block_cache->Lookup(Slice(sentinel_key));
if (handle) {
auto v = static_cast<char*>(bbto.block_cache->Value(handle));
char c = *v;
bbto.block_cache->Release(handle);
if (v == &kCompressedBlockCacheMarker) {
return Status::InvalidArgument(
"block_cache and block_cache_compressed share the same key space, "
"which is not supported");
} else if (c == kPersistentCacheMarker) {
return Status::InvalidArgument(
"block_cache and persistent_cache share the same key space, "
"which is not supported");
} else if (v != &kRegularBlockCacheMarker) {
return Status::Corruption("Unexpected mutation to block_cache");
}
}
}
if (bbto.block_cache_compressed) {
auto handle = bbto.block_cache_compressed->Lookup(Slice(sentinel_key));
if (handle) {
auto v = static_cast<char*>(bbto.block_cache_compressed->Value(handle));
char c = *v;
bbto.block_cache_compressed->Release(handle);
if (v == &kRegularBlockCacheMarker) {
return Status::InvalidArgument(
"block_cache_compressed and block_cache share the same key space, "
"which is not supported");
} else if (c == kPersistentCacheMarker) {
return Status::InvalidArgument(
"block_cache_compressed and persistent_cache share the same key "
"space, "
"which is not supported");
} else if (v != &kCompressedBlockCacheMarker) {
return Status::Corruption(
"Unexpected mutation to block_cache_compressed");
}
}
}
if (bbto.persistent_cache) {
std::unique_ptr<char[]> data;
size_t size = 0;
bbto.persistent_cache->Lookup(Slice(sentinel_key), &data, &size)
.PermitUncheckedError();
if (data && size > 0) {
if (data[0] == kRegularBlockCacheMarker) {
return Status::InvalidArgument(
"persistent_cache and block_cache share the same key space, "
"which is not supported");
} else if (data[0] == kCompressedBlockCacheMarker) {
return Status::InvalidArgument(
"persistent_cache and block_cache_compressed share the same key "
"space, "
"which is not supported");
} else if (data[0] != kPersistentCacheMarker) {
return Status::Corruption("Unexpected mutation to persistent_cache");
}
}
}
return Status::OK();
}
} // namespace
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 (!IsSupportedFormatVersion(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");
}
{
Status s = CheckCacheOptionCompatibility(table_options_);
if (!s.ok()) {
return s;
}
}
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: %" PRIu64 "\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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