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Refactor FilterPolicies toward Customizable (#9567)

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Summary:
Some changes to make it easier to make FilterPolicy
customizable. Especially, create distinct classes for the different
testing-only and user-facing built-in FilterPolicy modes.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9567

Test Plan:
tests updated, with no intended difference in functionality
tested. No difference in test performance seen as a result of moving to
string-based filter type configuration.

Reviewed By: mrambacher

Differential Revision: D34234694

Pulled By: pdillinger

fbshipit-source-id: 8a94931a9e04c3bcca863a4f524cfd064aaf0122
main
Peter Dillinger 3 years ago committed by Facebook GitHub Bot
parent a0c569ee1d
commit 8c681087c7
10 changed files with 670 additions and 504 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
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  1. 232
      db/db_bloom_filter_test.cc
  2. 28
      microbench/ribbon_bench.cc
  3. 64
      options/options_test.cc
  4. 8
      table/block_based/block_based_filter_block.cc
  5. 3
      table/block_based/block_based_table_builder.cc
  6. 371
      table/block_based/filter_policy.cc
  7. 262
      table/block_based/filter_policy_internal.h
  8. 9
      table/block_based/mock_block_based_table.h
  9. 60
      util/bloom_test.cc
  10. 17
      util/filter_bench.cc

232
db/db_bloom_filter_test.cc
Unescape View File

@ -10,6 +10,7 @@
#include <cstring>
#include <iomanip>
#include <sstream>
#include <string>
#include "cache/cache_entry_roles.h"
#include "cache/cache_reservation_manager.h"
@ -27,7 +28,17 @@
namespace ROCKSDB_NAMESPACE {
namespace {
using BFP = BloomFilterPolicy;
std::shared_ptr<const FilterPolicy> Create(double bits_per_key,
const std::string& name) {
return BloomLikeFilterPolicy::Create(name, bits_per_key);
}
const std::string kLegacyBloom = test::LegacyBloomFilterPolicy::kName();
const std::string kDeprecatedBlock =
DeprecatedBlockBasedBloomFilterPolicy::kName();
const std::string kFastLocalBloom = test::FastLocalBloomFilterPolicy::kName();
const std::string kStandard128Ribbon =
test::Standard128RibbonFilterPolicy::kName();
const std::string kAutoBloom = BloomFilterPolicy::kName();
} // namespace
// DB tests related to bloom filter.
@ -38,12 +49,13 @@ class DBBloomFilterTest : public DBTestBase {
: DBTestBase("db_bloom_filter_test", /*env_do_fsync=*/true) {}
};
class DBBloomFilterTestWithParam : public DBTestBase,
class DBBloomFilterTestWithParam
: public DBTestBase,
public testing::WithParamInterface<
std::tuple<BFP::Mode, bool, uint32_t>> {
std::tuple<std::string, bool, uint32_t>> {
// public testing::WithParamInterface<bool> {
protected:
BFP::Mode bfp_impl_;
std::string bfp_impl_;
bool partition_filters_;
uint32_t format_version_;
@ -90,7 +102,7 @@ TEST_P(DBBloomFilterTestDefFormatVersion, KeyMayExist) {
ReadOptions ropts;
std::string value;
anon::OptionsOverride options_override;
options_override.filter_policy.reset(new BFP(20, bfp_impl_));
options_override.filter_policy = Create(20, bfp_impl_);
options_override.partition_filters = partition_filters_;
options_override.metadata_block_size = 32;
Options options = CurrentOptions(options_override);
@ -477,7 +489,7 @@ TEST_P(DBBloomFilterTestWithParam, BloomFilter) {
// trigger reset of table_factory
BlockBasedTableOptions table_options;
table_options.no_block_cache = true;
table_options.filter_policy.reset(new BFP(10, bfp_impl_));
table_options.filter_policy = Create(10, bfp_impl_);
table_options.partition_filters = partition_filters_;
if (partition_filters_) {
table_options.index_type =
@ -573,11 +585,10 @@ class AlwaysTrueBitsBuilder : public FilterBitsBuilder {
size_t ApproximateNumEntries(size_t) override { return SIZE_MAX; }
};
class AlwaysTrueFilterPolicy : public BloomFilterPolicy {
class AlwaysTrueFilterPolicy : public BloomLikeFilterPolicy {
public:
explicit AlwaysTrueFilterPolicy(bool skip)
: BloomFilterPolicy(/* ignored */ 10, /* ignored */ BFP::kAutoBloom),
skip_(skip) {}
: BloomLikeFilterPolicy(/* ignored */ 10), skip_(skip) {}
FilterBitsBuilder* GetBuilderWithContext(
const FilterBuildingContext&) const override {
@ -588,6 +599,10 @@ class AlwaysTrueFilterPolicy : public BloomFilterPolicy {
}
}
std::string GetId() const override {
return "rocksdb.test.AlwaysTrueFilterPolicy";
}
private:
bool skip_;
};
@ -636,7 +651,7 @@ TEST_P(DBBloomFilterTestWithParam, SkipFilterOnEssentiallyZeroBpk) {
// Test 1: bits per key < 0.5 means skip filters -> no filter
// constructed or read.
table_options.filter_policy.reset(new BFP(0.4, bfp_impl_));
table_options.filter_policy = Create(0.4, bfp_impl_);
options.table_factory.reset(NewBlockBasedTableFactory(table_options));
DestroyAndReopen(options);
PutAndGetFn();
@ -724,25 +739,23 @@ TEST_P(DBBloomFilterTestWithParam, SkipFilterOnEssentiallyZeroBpk) {
INSTANTIATE_TEST_CASE_P(
FormatDef, DBBloomFilterTestDefFormatVersion,
::testing::Values(
std::make_tuple(BFP::kDeprecatedBlock, false,
test::kDefaultFormatVersion),
std::make_tuple(BFP::kAutoBloom, true, test::kDefaultFormatVersion),
std::make_tuple(BFP::kAutoBloom, false, test::kDefaultFormatVersion)));
std::make_tuple(kDeprecatedBlock, false, test::kDefaultFormatVersion),
std::make_tuple(kAutoBloom, true, test::kDefaultFormatVersion),
std::make_tuple(kAutoBloom, false, test::kDefaultFormatVersion)));
INSTANTIATE_TEST_CASE_P(
FormatDef, DBBloomFilterTestWithParam,
::testing::Values(
std::make_tuple(BFP::kDeprecatedBlock, false,
test::kDefaultFormatVersion),
std::make_tuple(BFP::kAutoBloom, true, test::kDefaultFormatVersion),
std::make_tuple(BFP::kAutoBloom, false, test::kDefaultFormatVersion)));
std::make_tuple(kDeprecatedBlock, false, test::kDefaultFormatVersion),
std::make_tuple(kAutoBloom, true, test::kDefaultFormatVersion),
std::make_tuple(kAutoBloom, false, test::kDefaultFormatVersion)));
INSTANTIATE_TEST_CASE_P(
FormatLatest, DBBloomFilterTestWithParam,
::testing::Values(
std::make_tuple(BFP::kDeprecatedBlock, false, kLatestFormatVersion),
std::make_tuple(BFP::kAutoBloom, true, kLatestFormatVersion),
std::make_tuple(BFP::kAutoBloom, false, kLatestFormatVersion)));
std::make_tuple(kDeprecatedBlock, false, kLatestFormatVersion),
std::make_tuple(kAutoBloom, true, kLatestFormatVersion),
std::make_tuple(kAutoBloom, false, kLatestFormatVersion)));
#endif // !defined(ROCKSDB_VALGRIND_RUN) || defined(ROCKSDB_FULL_VALGRIND_RUN)
TEST_F(DBBloomFilterTest, BloomFilterRate) {
@ -941,7 +954,7 @@ using FilterConstructionReserveMemoryHash = uint64_t;
class DBFilterConstructionReserveMemoryTestWithParam
: public DBTestBase,
public testing::WithParamInterface<
std::tuple<bool, BloomFilterPolicy::Mode, bool, bool>> {
std::tuple<bool, std::string, bool, bool>> {
public:
DBFilterConstructionReserveMemoryTestWithParam()
: DBTestBase("db_bloom_filter_tests",
@ -951,9 +964,8 @@ class DBFilterConstructionReserveMemoryTestWithParam
policy_(std::get<1>(GetParam())),
partition_filters_(std::get<2>(GetParam())),
detect_filter_construct_corruption_(std::get<3>(GetParam())) {
if (!reserve_table_builder_memory_ ||
policy_ == BloomFilterPolicy::Mode::kDeprecatedBlock ||
policy_ == BloomFilterPolicy::Mode::kLegacyBloom) {
if (!reserve_table_builder_memory_ || policy_ == kDeprecatedBlock ||
policy_ == kLegacyBloom) {
// For these cases, we only interested in whether filter construction
// cache resevation happens instead of its accuracy. Therefore we don't
// need many keys.
@ -966,7 +978,7 @@ class DBFilterConstructionReserveMemoryTestWithParam
// two partitions.
num_key_ = 18 * CacheReservationManager::GetDummyEntrySize() /
sizeof(FilterConstructionReserveMemoryHash);
} else if (policy_ == BloomFilterPolicy::Mode::kFastLocalBloom) {
} else if (policy_ == kFastLocalBloom) {
// For Bloom Filter + FullFilter case, since we design the num_key_ to
// make hash entry cache reservation be a multiple of dummy entries, the
// correct behavior of charging final filter on top of it will trigger at
@ -995,7 +1007,7 @@ class DBFilterConstructionReserveMemoryTestWithParam
constexpr std::size_t kCacheCapacity = 100 * 1024 * 1024;
table_options.reserve_table_builder_memory = reserve_table_builder_memory_;
table_options.filter_policy.reset(new BloomFilterPolicy(10, policy_));
table_options.filter_policy = Create(10, policy_);
table_options.partition_filters = partition_filters_;
if (table_options.partition_filters) {
table_options.index_type =
@ -1023,7 +1035,7 @@ class DBFilterConstructionReserveMemoryTestWithParam
bool ReserveTableBuilderMemory() { return reserve_table_builder_memory_; }
BloomFilterPolicy::Mode GetFilterPolicy() { return policy_; }
std::string GetFilterPolicy() { return policy_; }
bool PartitionFilters() { return partition_filters_; }
@ -1035,7 +1047,7 @@ class DBFilterConstructionReserveMemoryTestWithParam
private:
std::size_t num_key_;
bool reserve_table_builder_memory_;
BloomFilterPolicy::Mode policy_;
std::string policy_;
bool partition_filters_;
std::shared_ptr<FilterConstructResPeakTrackingCache> cache_;
bool detect_filter_construct_corruption_;
@ -1043,32 +1055,20 @@ class DBFilterConstructionReserveMemoryTestWithParam
INSTANTIATE_TEST_CASE_P(
BlockBasedTableOptions, DBFilterConstructionReserveMemoryTestWithParam,
::testing::Values(
std::make_tuple(false, BloomFilterPolicy::Mode::kFastLocalBloom, false,
false),
std::make_tuple(true, BloomFilterPolicy::Mode::kFastLocalBloom, false,
false),
std::make_tuple(true, BloomFilterPolicy::Mode::kFastLocalBloom, false,
true),
std::make_tuple(true, BloomFilterPolicy::Mode::kFastLocalBloom, true,
false),
std::make_tuple(true, BloomFilterPolicy::Mode::kFastLocalBloom, true,
true),
std::make_tuple(true, BloomFilterPolicy::Mode::kStandard128Ribbon,
false, false),
std::make_tuple(true, BloomFilterPolicy::Mode::kStandard128Ribbon,
false, true),
std::make_tuple(true, BloomFilterPolicy::Mode::kStandard128Ribbon, true,
false),
std::make_tuple(true, BloomFilterPolicy::Mode::kStandard128Ribbon, true,
true),
std::make_tuple(true, BloomFilterPolicy::Mode::kDeprecatedBlock, false,
false),
std::make_tuple(true, BloomFilterPolicy::Mode::kLegacyBloom, false,
false)));
::testing::Values(std::make_tuple(false, kFastLocalBloom, false, false),
std::make_tuple(true, kFastLocalBloom, false, false),
std::make_tuple(true, kFastLocalBloom, false, true),
std::make_tuple(true, kFastLocalBloom, true, false),
std::make_tuple(true, kFastLocalBloom, true, true),
std::make_tuple(true, kStandard128Ribbon, false, false),
std::make_tuple(true, kStandard128Ribbon, false, true),
std::make_tuple(true, kStandard128Ribbon, true, false),
std::make_tuple(true, kStandard128Ribbon, true, true),
std::make_tuple(true, kDeprecatedBlock, false, false),
std::make_tuple(true, kLegacyBloom, false, false)));
// TODO: Speed up this test.
// The current test inserts many keys (on the scale of dummy entry size)
@ -1126,7 +1126,7 @@ TEST_P(DBFilterConstructionReserveMemoryTestWithParam, ReserveMemory) {
ASSERT_OK(Flush());
bool reserve_table_builder_memory = ReserveTableBuilderMemory();
BloomFilterPolicy::Mode policy = GetFilterPolicy();
std::string policy = GetFilterPolicy();
bool partition_filters = PartitionFilters();
bool detect_filter_construct_corruption =
table_options.detect_filter_construct_corruption;
@ -1141,12 +1141,11 @@ TEST_P(DBFilterConstructionReserveMemoryTestWithParam, ReserveMemory) {
return;
}
if (policy == BloomFilterPolicy::Mode::kDeprecatedBlock ||
policy == BloomFilterPolicy::Mode::kLegacyBloom) {
if (policy == kDeprecatedBlock || policy == kLegacyBloom) {
EXPECT_EQ(filter_construction_cache_res_peaks.size(), 0)
<< "There shouldn't be filter construction cache reservation as this "
"feature does not support BloomFilterPolicy::Mode::kDeprecatedBlock "
"nor BloomFilterPolicy::Mode::kLegacyBloom";
"feature does not support kDeprecatedBlock "
"nor kLegacyBloom";
return;
}
@ -1162,17 +1161,17 @@ TEST_P(DBFilterConstructionReserveMemoryTestWithParam, ReserveMemory) {
const std::size_t predicted_hash_entries_cache_res_dummy_entry_num =
predicted_hash_entries_cache_res / kDummyEntrySize;
const std::size_t predicted_final_filter_cache_res =
static_cast<std::size_t>(std::ceil(
1.0 * predicted_hash_entries_cache_res_dummy_entry_num / 6 *
(policy == BloomFilterPolicy::Mode::kStandard128Ribbon ? 0.7 : 1))) *
static_cast<std::size_t>(
std::ceil(1.0 * predicted_hash_entries_cache_res_dummy_entry_num / 6 *
(policy == kStandard128Ribbon ? 0.7 : 1))) *
kDummyEntrySize;
const std::size_t predicted_banding_cache_res =
static_cast<std::size_t>(
std::ceil(predicted_hash_entries_cache_res_dummy_entry_num * 2.5)) *
kDummyEntrySize;
if (policy == BloomFilterPolicy::Mode::kFastLocalBloom) {
/* BloomFilterPolicy::Mode::kFastLocalBloom + FullFilter
if (policy == kFastLocalBloom) {
/* kFastLocalBloom + FullFilter
* p0
* / \
* b / \
@ -1186,13 +1185,13 @@ TEST_P(DBFilterConstructionReserveMemoryTestWithParam, ReserveMemory) {
* multiple of dummy entries so that reservation for (p0 - b)
* will trigger at least another dummy entry insertion.
*
* BloomFilterPolicy::Mode::kFastLocalBloom + FullFilter +
* kFastLocalBloom + FullFilter +
* detect_filter_construct_corruption
* The peak p0 stays the same as
* (BloomFilterPolicy::Mode::kFastLocalBloom + FullFilter) but just lasts
* (kFastLocalBloom + FullFilter) but just lasts
* longer since we release hash entries reservation later.
*
* BloomFilterPolicy::Mode::kFastLocalBloom + PartitionedFilter
* kFastLocalBloom + PartitionedFilter
* p1
* / \
* p0 b'/ \
@ -1209,17 +1208,17 @@ TEST_P(DBFilterConstructionReserveMemoryTestWithParam, ReserveMemory) {
* + parittioned final filter1 + parittioned final filter2
* = hash entries + final filter
*
* BloomFilterPolicy::Mode::kFastLocalBloom + PartitionedFilter +
* kFastLocalBloom + PartitionedFilter +
* detect_filter_construct_corruption
* The peak p0, p1 stay the same as
* (BloomFilterPolicy::Mode::kFastLocalBloom + PartitionedFilter) but just
* (kFastLocalBloom + PartitionedFilter) but just
* last longer since we release hash entries reservation later.
*
*/
if (!partition_filters) {
EXPECT_EQ(filter_construction_cache_res_peaks.size(), 1)
<< "Filter construction cache reservation should have only 1 peak in "
"case: BloomFilterPolicy::Mode::kFastLocalBloom + FullFilter";
"case: kFastLocalBloom + FullFilter";
std::size_t filter_construction_cache_res_peak =
filter_construction_cache_res_peaks[0];
EXPECT_GT(filter_construction_cache_res_peak,
@ -1239,7 +1238,7 @@ TEST_P(DBFilterConstructionReserveMemoryTestWithParam, ReserveMemory) {
} else {
EXPECT_GE(filter_construction_cache_res_peaks.size(), 2)
<< "Filter construction cache reservation should have multiple peaks "
"in case: BloomFilterPolicy::Mode::kFastLocalBloom + "
"in case: kFastLocalBloom + "
"PartitionedFilter";
std::size_t predicted_filter_construction_cache_res_increments_sum =
predicted_hash_entries_cache_res + predicted_final_filter_cache_res;
@ -1251,8 +1250,8 @@ TEST_P(DBFilterConstructionReserveMemoryTestWithParam, ReserveMemory) {
}
}
if (policy == BloomFilterPolicy::Mode::kStandard128Ribbon) {
/* BloomFilterPolicy::Mode::kStandard128Ribbon + FullFilter
if (policy == kStandard128Ribbon) {
/* kStandard128Ribbon + FullFilter
* p0
* / \ p1
* / \/\
@ -1266,7 +1265,7 @@ TEST_P(DBFilterConstructionReserveMemoryTestWithParam, ReserveMemory) {
* will trigger at least another dummy entry insertion
* (or equivelantly to saying, creating another peak).
*
* BloomFilterPolicy::Mode::kStandard128Ribbon + FullFilter +
* kStandard128Ribbon + FullFilter +
* detect_filter_construct_corruption
*
* new p0
@ -1287,7 +1286,7 @@ TEST_P(DBFilterConstructionReserveMemoryTestWithParam, ReserveMemory) {
* entries reserveration (like p0 - b' previously) until after final filter
* creation and post-verification
*
* BloomFilterPolicy::Mode::kStandard128Ribbon + PartitionedFilter
* kStandard128Ribbon + PartitionedFilter
* p3
* p0 /\ p4
* / \ p1 / \ /\
@ -1306,7 +1305,7 @@ TEST_P(DBFilterConstructionReserveMemoryTestWithParam, ReserveMemory) {
* + parittioned final filter1 + parittioned final filter2
* = hash entries + banding + final filter
*
* BloomFilterPolicy::Mode::kStandard128Ribbon + PartitionedFilter +
* kStandard128Ribbon + PartitionedFilter +
* detect_filter_construct_corruption
*
* new p3
@ -1347,7 +1346,7 @@ TEST_P(DBFilterConstructionReserveMemoryTestWithParam, ReserveMemory) {
if (!detect_filter_construct_corruption) {
EXPECT_EQ(filter_construction_cache_res_peaks.size(), 2)
<< "Filter construction cache reservation should have 2 peaks in "
"case: BloomFilterPolicy::Mode::kStandard128Ribbon + "
"case: kStandard128Ribbon + "
"FullFilter. "
"The second peak is resulted from charging the final filter "
"after "
@ -1366,7 +1365,7 @@ TEST_P(DBFilterConstructionReserveMemoryTestWithParam, ReserveMemory) {
} else {
EXPECT_EQ(filter_construction_cache_res_peaks.size(), 1)
<< "Filter construction cache reservation should have 1 peaks in "
"case: BloomFilterPolicy::Mode::kStandard128Ribbon + FullFilter "
"case: kStandard128Ribbon + FullFilter "
"+ detect_filter_construct_corruption. "
"The previous second peak now disappears since we don't "
"decrease the hash entry reservation"
@ -1388,13 +1387,13 @@ TEST_P(DBFilterConstructionReserveMemoryTestWithParam, ReserveMemory) {
EXPECT_GE(filter_construction_cache_res_peaks.size(), 3)
<< "Filter construction cache reservation should have more than 3 "
"peaks "
"in case: BloomFilterPolicy::Mode::kStandard128Ribbon + "
"in case: kStandard128Ribbon + "
"PartitionedFilter";
} else {
EXPECT_GE(filter_construction_cache_res_peaks.size(), 2)
<< "Filter construction cache reservation should have more than 2 "
"peaks "
"in case: BloomFilterPolicy::Mode::kStandard128Ribbon + "
"in case: kStandard128Ribbon + "
"PartitionedFilter + detect_filter_construct_corruption";
}
std::size_t predicted_filter_construction_cache_res_increments_sum =
@ -1412,8 +1411,8 @@ TEST_P(DBFilterConstructionReserveMemoryTestWithParam, ReserveMemory) {
class DBFilterConstructionCorruptionTestWithParam
: public DBTestBase,
public testing::WithParamInterface<
std::tuple<bool /* detect_filter_construct_corruption */,
BloomFilterPolicy::Mode, bool /* partition_filters */>> {
std::tuple<bool /* detect_filter_construct_corruption */, std::string,
bool /* partition_filters */>> {
public:
DBFilterConstructionCorruptionTestWithParam()
: DBTestBase("db_bloom_filter_tests",
@ -1422,8 +1421,7 @@ class DBFilterConstructionCorruptionTestWithParam
BlockBasedTableOptions GetBlockBasedTableOptions() {
BlockBasedTableOptions table_options;
table_options.detect_filter_construct_corruption = std::get<0>(GetParam());
table_options.filter_policy.reset(
new BloomFilterPolicy(10, std::get<1>(GetParam())));
table_options.filter_policy = Create(10, std::get<1>(GetParam()));
table_options.partition_filters = std::get<2>(GetParam());
if (table_options.partition_filters) {
table_options.index_type =
@ -1444,14 +1442,11 @@ class DBFilterConstructionCorruptionTestWithParam
INSTANTIATE_TEST_CASE_P(
DBFilterConstructionCorruptionTestWithParam,
DBFilterConstructionCorruptionTestWithParam,
::testing::Values(
std::make_tuple(false, BloomFilterPolicy::Mode::kFastLocalBloom, false),
std::make_tuple(true, BloomFilterPolicy::Mode::kFastLocalBloom, false),
std::make_tuple(true, BloomFilterPolicy::Mode::kFastLocalBloom, true),
std::make_tuple(true, BloomFilterPolicy::Mode::kStandard128Ribbon,
false),
std::make_tuple(true, BloomFilterPolicy::Mode::kStandard128Ribbon,
true)));
::testing::Values(std::make_tuple(false, kFastLocalBloom, false),
std::make_tuple(true, kFastLocalBloom, false),
std::make_tuple(true, kFastLocalBloom, true),
std::make_tuple(true, kStandard128Ribbon, false),
std::make_tuple(true, kStandard128Ribbon, true)));
TEST_P(DBFilterConstructionCorruptionTestWithParam, DetectCorruption) {
Options options = CurrentOptions();
@ -2139,16 +2134,12 @@ INSTANTIATE_TEST_CASE_P(DBBloomFilterTestVaryPrefixAndFormatVer,
#ifndef ROCKSDB_LITE
namespace {
namespace BFP2 {
// Extends BFP::Mode with option to use Plain table
using PseudoMode = int;
static constexpr PseudoMode kPlainTable = -1;
} // namespace BFP2
static const std::string kPlainTable = "test_PlainTableBloom";
} // namespace
class BloomStatsTestWithParam
: public DBBloomFilterTest,
public testing::WithParamInterface<std::tuple<BFP2::PseudoMode, bool>> {
public testing::WithParamInterface<std::tuple<std::string, bool>> {
public:
BloomStatsTestWithParam() {
bfp_impl_ = std::get<0>(GetParam());
@ -2159,7 +2150,7 @@ class BloomStatsTestWithParam
ROCKSDB_NAMESPACE::NewFixedPrefixTransform(4));
options_.memtable_prefix_bloom_size_ratio =
8.0 * 1024.0 / static_cast<double>(options_.write_buffer_size);
if (bfp_impl_ == BFP2::kPlainTable) {
if (bfp_impl_ == kPlainTable) {
assert(!partition_filters_); // not supported in plain table
PlainTableOptions table_options;
options_.table_factory.reset(NewPlainTableFactory(table_options));
@ -2167,13 +2158,12 @@ class BloomStatsTestWithParam
BlockBasedTableOptions table_options;
table_options.hash_index_allow_collision = false;
if (partition_filters_) {
assert(bfp_impl_ != BFP::kDeprecatedBlock);
assert(bfp_impl_ != kDeprecatedBlock);
table_options.partition_filters = partition_filters_;
table_options.index_type =
BlockBasedTableOptions::IndexType::kTwoLevelIndexSearch;
}
table_options.filter_policy.reset(
new BFP(10, static_cast<BFP::Mode>(bfp_impl_)));
table_options.filter_policy = Create(10, bfp_impl_);
options_.table_factory.reset(NewBlockBasedTableFactory(table_options));
}
options_.env = env_;
@ -2191,7 +2181,7 @@ class BloomStatsTestWithParam
static void SetUpTestCase() {}
static void TearDownTestCase() {}
BFP2::PseudoMode bfp_impl_;
std::string bfp_impl_;
bool partition_filters_;
Options options_;
};
@ -2295,7 +2285,7 @@ TEST_P(BloomStatsTestWithParam, BloomStatsTestWithIter) {
ASSERT_EQ(value3, iter->value().ToString());
// The seek doesn't check block-based bloom filter because last index key
// starts with the same prefix we're seeking to.
uint64_t expected_hits = bfp_impl_ == BFP::kDeprecatedBlock ? 1 : 2;
uint64_t expected_hits = bfp_impl_ == kDeprecatedBlock ? 1 : 2;
ASSERT_EQ(expected_hits, get_perf_context()->bloom_sst_hit_count);
iter->Seek(key2);
@ -2307,12 +2297,12 @@ TEST_P(BloomStatsTestWithParam, BloomStatsTestWithIter) {
INSTANTIATE_TEST_CASE_P(
BloomStatsTestWithParam, BloomStatsTestWithParam,
::testing::Values(std::make_tuple(BFP::kDeprecatedBlock, false),
std::make_tuple(BFP::kLegacyBloom, false),
std::make_tuple(BFP::kLegacyBloom, true),
std::make_tuple(BFP::kFastLocalBloom, false),
std::make_tuple(BFP::kFastLocalBloom, true),
std::make_tuple(BFP2::kPlainTable, false)));
::testing::Values(std::make_tuple(kDeprecatedBlock, false),
std::make_tuple(kLegacyBloom, false),
std::make_tuple(kLegacyBloom, true),
std::make_tuple(kFastLocalBloom, false),
std::make_tuple(kFastLocalBloom, true),
std::make_tuple(kPlainTable, false)));
namespace {
void PrefixScanInit(DBBloomFilterTest* dbtest) {
@ -2620,8 +2610,8 @@ int CountIter(std::unique_ptr<Iterator>& iter, const Slice& key) {
// into the same string, or 2) the transformed seek key is of the same length
// as the upper bound and two keys are adjacent according to the comparator.
TEST_F(DBBloomFilterTest, DynamicBloomFilterUpperBound) {
for (auto bfp_impl : BFP::kAllFixedImpls) {
int using_full_builder = bfp_impl != BFP::kDeprecatedBlock;
for (const auto& bfp_impl : BloomLikeFilterPolicy::GetAllFixedImpls()) {
int using_full_builder = bfp_impl != kDeprecatedBlock;
Options options;
options.create_if_missing = true;
options.env = CurrentOptions().env;
@ -2631,7 +2621,7 @@ TEST_F(DBBloomFilterTest, DynamicBloomFilterUpperBound) {
// Enable prefix bloom for SST files
BlockBasedTableOptions table_options;
table_options.cache_index_and_filter_blocks = true;
table_options.filter_policy.reset(new BFP(10, bfp_impl));
table_options.filter_policy = Create(10, bfp_impl);
table_options.index_shortening = BlockBasedTableOptions::
IndexShorteningMode::kShortenSeparatorsAndSuccessor;
options.table_factory.reset(NewBlockBasedTableFactory(table_options));
@ -2752,8 +2742,8 @@ TEST_F(DBBloomFilterTest, DynamicBloomFilterUpperBound) {
// Create multiple SST files each with a different prefix_extractor config,
// verify iterators can read all SST files using the latest config.
TEST_F(DBBloomFilterTest, DynamicBloomFilterMultipleSST) {
for (auto bfp_impl : BFP::kAllFixedImpls) {
int using_full_builder = bfp_impl != BFP::kDeprecatedBlock;
for (const auto& bfp_impl : BloomLikeFilterPolicy::GetAllFixedImpls()) {
int using_full_builder = bfp_impl != kDeprecatedBlock;
Options options;
options.env = CurrentOptions().env;
options.create_if_missing = true;
@ -2762,7 +2752,7 @@ TEST_F(DBBloomFilterTest, DynamicBloomFilterMultipleSST) {
options.statistics = CreateDBStatistics();
// Enable prefix bloom for SST files
BlockBasedTableOptions table_options;
table_options.filter_policy.reset(new BFP(10, bfp_impl));
table_options.filter_policy = Create(10, bfp_impl);
table_options.cache_index_and_filter_blocks = true;
options.table_factory.reset(NewBlockBasedTableFactory(table_options));
DestroyAndReopen(options);
@ -2888,7 +2878,7 @@ TEST_F(DBBloomFilterTest, DynamicBloomFilterMultipleSST) {
// as expected
TEST_F(DBBloomFilterTest, DynamicBloomFilterNewColumnFamily) {
int iteration = 0;
for (auto bfp_impl : BFP::kAllFixedImpls) {
for (const auto& bfp_impl : BloomLikeFilterPolicy::GetAllFixedImpls()) {
Options options = CurrentOptions();
options.create_if_missing = true;
options.prefix_extractor.reset(NewFixedPrefixTransform(1));
@ -2897,7 +2887,7 @@ TEST_F(DBBloomFilterTest, DynamicBloomFilterNewColumnFamily) {
// Enable prefix bloom for SST files
BlockBasedTableOptions table_options;
table_options.cache_index_and_filter_blocks = true;
table_options.filter_policy.reset(new BFP(10, bfp_impl));
table_options.filter_policy = Create(10, bfp_impl);
options.table_factory.reset(NewBlockBasedTableFactory(table_options));
CreateAndReopenWithCF({"pikachu" + std::to_string(iteration)}, options);
ReadOptions read_options;
@ -2944,7 +2934,7 @@ TEST_F(DBBloomFilterTest, DynamicBloomFilterNewColumnFamily) {
// Verify it's possible to change prefix_extractor at runtime and iterators
// behaves as expected
TEST_F(DBBloomFilterTest, DynamicBloomFilterOptions) {
for (auto bfp_impl : BFP::kAllFixedImpls) {
for (const auto& bfp_impl : BloomLikeFilterPolicy::GetAllFixedImpls()) {
Options options;
options.env = CurrentOptions().env;
options.create_if_missing = true;
@ -2954,7 +2944,7 @@ TEST_F(DBBloomFilterTest, DynamicBloomFilterOptions) {
// Enable prefix bloom for SST files
BlockBasedTableOptions table_options;
table_options.cache_index_and_filter_blocks = true;
table_options.filter_policy.reset(new BFP(10, bfp_impl));
table_options.filter_policy = Create(10, bfp_impl);
options.table_factory.reset(NewBlockBasedTableFactory(table_options));
DestroyAndReopen(options);

28
microbench/ribbon_bench.cc
Unescape View File

@ -47,30 +47,28 @@ struct KeyMaker {
};
// benchmark arguments:
// 0. filter mode
// 0. filter impl (like filter_bench -impl)
// 1. filter config bits_per_key
// 2. average data key length
// 3. data entry number
static void CustomArguments(benchmark::internal::Benchmark *b) {
for (int filter_mode :
{BloomFilterPolicy::kLegacyBloom, BloomFilterPolicy::kFastLocalBloom,
BloomFilterPolicy::kStandard128Ribbon}) {
for (int filter_impl : {0, 2, 3}) {
for (int bits_per_key : {10, 20}) {
for (int key_len_avg : {10, 100}) {
for (int64_t entry_num : {1 << 10, 1 << 20}) {
b->Args({filter_mode, bits_per_key, key_len_avg, entry_num});
b->Args({filter_impl, bits_per_key, key_len_avg, entry_num});
}
}
}
}
b->ArgNames({"filter_mode", "bits_per_key", "key_len_avg", "entry_num"});
b->ArgNames({"filter_impl", "bits_per_key", "key_len_avg", "entry_num"});
}
static void FilterBuild(benchmark::State &state) {
// setup data
auto filter = new BloomFilterPolicy(
static_cast<double>(state.range(1)),
static_cast<BloomFilterPolicy::Mode>(state.range(0)));
auto filter = BloomLikeFilterPolicy::Create(
BloomLikeFilterPolicy::GetAllFixedImpls().at(state.range(0)),
static_cast<double>(state.range(1)));
auto tester = new mock::MockBlockBasedTableTester(filter);
KeyMaker km(state.range(2));
std::unique_ptr<const char[]> owner;
@ -91,9 +89,9 @@ BENCHMARK(FilterBuild)->Apply(CustomArguments);
static void FilterQueryPositive(benchmark::State &state) {
// setup data
auto filter = new BloomFilterPolicy(
static_cast<double>(state.range(1)),
static_cast<BloomFilterPolicy::Mode>(state.range(0)));
auto filter = BloomLikeFilterPolicy::Create(
BloomLikeFilterPolicy::GetAllFixedImpls().at(state.range(0)),
static_cast<double>(state.range(1)));
auto tester = new mock::MockBlockBasedTableTester(filter);
KeyMaker km(state.range(2));
std::unique_ptr<const char[]> owner;
@ -119,9 +117,9 @@ BENCHMARK(FilterQueryPositive)->Apply(CustomArguments);
static void FilterQueryNegative(benchmark::State &state) {
// setup data
auto filter = new BloomFilterPolicy(
static_cast<double>(state.range(1)),
static_cast<BloomFilterPolicy::Mode>(state.range(0)));
auto filter = BloomLikeFilterPolicy::Create(
BloomLikeFilterPolicy::GetAllFixedImpls().at(state.range(0)),
static_cast<double>(state.range(1)));
auto tester = new mock::MockBlockBasedTableTester(filter);
KeyMaker km(state.range(2));
std::unique_ptr<const char[]> owner;

64
options/options_test.cc
Unescape View File

@ -882,7 +882,6 @@ TEST_F(OptionsTest, GetBlockBasedTableOptionsFromString) {
dynamic_cast<const BloomFilterPolicy*>(new_opt.filter_policy.get());
EXPECT_EQ(bfp->GetMillibitsPerKey(), 4567);
EXPECT_EQ(bfp->GetWholeBitsPerKey(), 5);
EXPECT_EQ(bfp->GetMode(), BloomFilterPolicy::kAutoBloom);
// Verify that only the lower 32bits are stored in
// new_opt.read_amp_bytes_per_bit.
EXPECT_EQ(1U, new_opt.read_amp_bytes_per_bit);
@ -936,7 +935,6 @@ TEST_F(OptionsTest, GetBlockBasedTableOptionsFromString) {
bfp = dynamic_cast<const BloomFilterPolicy*>(new_opt.filter_policy.get());
EXPECT_EQ(bfp->GetMillibitsPerKey(), 4000);
EXPECT_EQ(bfp->GetWholeBitsPerKey(), 4);
EXPECT_EQ(bfp->GetMode(), BloomFilterPolicy::kAutoBloom);
// use_block_based_builder=true now ignored in public API (same as false)
ASSERT_OK(GetBlockBasedTableOptionsFromString(
@ -944,82 +942,67 @@ TEST_F(OptionsTest, GetBlockBasedTableOptionsFromString) {
bfp = dynamic_cast<const BloomFilterPolicy*>(new_opt.filter_policy.get());
EXPECT_EQ(bfp->GetMillibitsPerKey(), 4000);
EXPECT_EQ(bfp->GetWholeBitsPerKey(), 4);
EXPECT_EQ(bfp->GetMode(), BloomFilterPolicy::kAutoBloom);
// Back door way of enabling deprecated block-based Bloom
ASSERT_OK(GetBlockBasedTableOptionsFromString(
config_options, table_opt,
"filter_policy=rocksdb.internal.DeprecatedBlockBasedBloomFilter:4",
&new_opt));
bfp = dynamic_cast<const BloomFilterPolicy*>(new_opt.filter_policy.get());
EXPECT_EQ(bfp->GetWholeBitsPerKey(), 4); // Only whole bits used
EXPECT_EQ(bfp->GetMode(), BloomFilterPolicy::kDeprecatedBlock);
auto builtin =
dynamic_cast<const BuiltinFilterPolicy*>(new_opt.filter_policy.get());
EXPECT_EQ(builtin->GetId(),
"rocksdb.internal.DeprecatedBlockBasedBloomFilter:4");
// Test configuring using other internal names
ASSERT_OK(GetBlockBasedTableOptionsFromString(
config_options, table_opt,
"filter_policy=rocksdb.internal.LegacyBloomFilter:3", &new_opt));
bfp = dynamic_cast<const BloomFilterPolicy*>(new_opt.filter_policy.get());
EXPECT_EQ(bfp->GetWholeBitsPerKey(), 3); // Only whole bits used
EXPECT_EQ(bfp->GetMode(), BloomFilterPolicy::kLegacyBloom);
builtin =
dynamic_cast<const BuiltinFilterPolicy*>(new_opt.filter_policy.get());
EXPECT_EQ(builtin->GetId(), "rocksdb.internal.LegacyBloomFilter:3");
ASSERT_OK(GetBlockBasedTableOptionsFromString(
config_options, table_opt,
"filter_policy=rocksdb.internal.FastLocalBloomFilter:1.234", &new_opt));
bfp = dynamic_cast<const BloomFilterPolicy*>(new_opt.filter_policy.get());
EXPECT_EQ(bfp->GetMillibitsPerKey(), 1234);
EXPECT_EQ(bfp->GetMode(), BloomFilterPolicy::kFastLocalBloom);
builtin =
dynamic_cast<const BuiltinFilterPolicy*>(new_opt.filter_policy.get());
EXPECT_EQ(builtin->GetId(), "rocksdb.internal.FastLocalBloomFilter:1.234");
ASSERT_OK(GetBlockBasedTableOptionsFromString(
config_options, table_opt,
"filter_policy=rocksdb.internal.Standard128RibbonFilter:1.234",
&new_opt));
bfp = dynamic_cast<const BloomFilterPolicy*>(new_opt.filter_policy.get());
EXPECT_EQ(bfp->GetMillibitsPerKey(), 1234);
EXPECT_EQ(bfp->GetMode(), BloomFilterPolicy::kStandard128Ribbon);
builtin =
dynamic_cast<const BuiltinFilterPolicy*>(new_opt.filter_policy.get());
EXPECT_EQ(builtin->GetId(), "rocksdb.internal.Standard128RibbonFilter:1.234");
// Ribbon filter policy (no Bloom hybrid)
ASSERT_OK(GetBlockBasedTableOptionsFromString(
config_options, table_opt, "filter_policy=ribbonfilter:5.678:-1;",
&new_opt));
ASSERT_TRUE(new_opt.filter_policy != nullptr);
bfp = dynamic_cast<const BloomFilterPolicy*>(new_opt.filter_policy.get());
EXPECT_EQ(bfp->GetMillibitsPerKey(), 5678);
EXPECT_EQ(bfp->GetMode(), BloomFilterPolicy::kStandard128Ribbon);
auto rfp =
dynamic_cast<const RibbonFilterPolicy*>(new_opt.filter_policy.get());
EXPECT_EQ(rfp->GetMillibitsPerKey(), 5678);
EXPECT_EQ(rfp->GetBloomBeforeLevel(), -1);
// Ribbon filter policy (default Bloom hybrid)
ASSERT_OK(GetBlockBasedTableOptionsFromString(
config_options, table_opt, "filter_policy=ribbonfilter:6.789;",
&new_opt));
ASSERT_TRUE(new_opt.filter_policy != nullptr);
auto ltfp = dynamic_cast<const LevelThresholdFilterPolicy*>(
new_opt.filter_policy.get());
EXPECT_EQ(ltfp->TEST_GetStartingLevelForB(), 0);
bfp = dynamic_cast<const BloomFilterPolicy*>(ltfp->TEST_GetPolicyA());
EXPECT_EQ(bfp->GetMillibitsPerKey(), 6789);
EXPECT_EQ(bfp->GetMode(), BloomFilterPolicy::kFastLocalBloom);
bfp = dynamic_cast<const BloomFilterPolicy*>(ltfp->TEST_GetPolicyB());
EXPECT_EQ(bfp->GetMillibitsPerKey(), 6789);
EXPECT_EQ(bfp->GetMode(), BloomFilterPolicy::kStandard128Ribbon);
rfp = dynamic_cast<const RibbonFilterPolicy*>(new_opt.filter_policy.get());
EXPECT_EQ(rfp->GetMillibitsPerKey(), 6789);
EXPECT_EQ(rfp->GetBloomBeforeLevel(), 0);
// Ribbon filter policy (custom Bloom hybrid)
ASSERT_OK(GetBlockBasedTableOptionsFromString(
config_options, table_opt, "filter_policy=ribbonfilter:6.789:5;",
&new_opt));
ASSERT_TRUE(new_opt.filter_policy != nullptr);
ltfp = dynamic_cast<const LevelThresholdFilterPolicy*>(
new_opt.filter_policy.get());
EXPECT_EQ(ltfp->TEST_GetStartingLevelForB(), 5);
bfp = dynamic_cast<const BloomFilterPolicy*>(ltfp->TEST_GetPolicyA());
EXPECT_EQ(bfp->GetMillibitsPerKey(), 6789);
EXPECT_EQ(bfp->GetMode(), BloomFilterPolicy::kFastLocalBloom);
bfp = dynamic_cast<const BloomFilterPolicy*>(ltfp->TEST_GetPolicyB());
EXPECT_EQ(bfp->GetMillibitsPerKey(), 6789);
EXPECT_EQ(bfp->GetMode(), BloomFilterPolicy::kStandard128Ribbon);
rfp = dynamic_cast<const RibbonFilterPolicy*>(new_opt.filter_policy.get());
EXPECT_EQ(rfp->GetMillibitsPerKey(), 6789);
EXPECT_EQ(rfp->GetBloomBeforeLevel(), 5);
// Check block cache options are overwritten when specified
// in new format as a struct.
@ -2877,7 +2860,6 @@ TEST_F(OptionsOldApiTest, GetBlockBasedTableOptionsFromString) {
bfp = dynamic_cast<const BloomFilterPolicy*>(new_opt.filter_policy.get());
EXPECT_EQ(bfp->GetMillibitsPerKey(), 4000);
EXPECT_EQ(bfp->GetWholeBitsPerKey(), 4);
EXPECT_EQ(bfp->GetMode(), BloomFilterPolicy::kAutoBloom);
// Check block cache options are overwritten when specified
// in new format as a struct.

8
table/block_based/block_based_filter_block.cc
Unescape View File

@ -15,6 +15,7 @@
#include "monitoring/perf_context_imp.h"
#include "rocksdb/filter_policy.h"
#include "table/block_based/block_based_table_reader.h"
#include "util/cast_util.h"
#include "util/coding.h"
#include "util/string_util.h"
@ -157,8 +158,8 @@ void BlockBasedFilterBlockBuilder::GenerateFilter() {
// Generate filter for current set of keys and append to result_.
filter_offsets_.push_back(static_cast<uint32_t>(result_.size()));
BloomFilterPolicy::CreateFilter(tmp_entries_.data(),
static_cast<int>(num_entries), bits_per_key_,
DeprecatedBlockBasedBloomFilterPolicy::CreateFilter(
tmp_entries_.data(), static_cast<int>(num_entries), bits_per_key_,
&result_);
tmp_entries_.clear();
@ -283,7 +284,8 @@ bool BlockBasedFilterBlockReader::MayMatch(
assert(table());
assert(table()->get_rep());
const bool may_match = BloomFilterPolicy::KeyMayMatch(entry, filter);
const bool may_match =
DeprecatedBlockBasedBloomFilterPolicy::KeyMayMatch(entry, filter);
if (may_match) {
PERF_COUNTER_ADD(bloom_sst_hit_count, 1);
return true;

3
table/block_based/block_based_table_builder.cc
Unescape View File

@ -82,7 +82,8 @@ FilterBlockBuilder* CreateFilterBlockBuilder(
} else {
// Check for backdoor deprecated block-based bloom config
size_t starting_est = filter_bits_builder->EstimateEntriesAdded();
constexpr auto kSecretStart = BloomFilterPolicy::kSecretBitsPerKeyStart;
constexpr auto kSecretStart =
DeprecatedBlockBasedBloomFilterPolicy::kSecretBitsPerKeyStart;
if (starting_est >= kSecretStart && starting_est < kSecretStart + 100) {
int bits_per_key = static_cast<int>(starting_est - kSecretStart);
delete filter_bits_builder;

371
table/block_based/filter_policy.cc
Unescape View File

@ -10,6 +10,7 @@
#include "rocksdb/filter_policy.h"
#include <array>
#include <climits>
#include <cstring>
#include <deque>
#include <limits>
@ -18,6 +19,8 @@
#include "cache/cache_entry_roles.h"
#include "cache/cache_reservation_manager.h"
#include "logging/logging.h"
#include "port/lang.h"
#include "rocksdb/rocksdb_namespace.h"
#include "rocksdb/slice.h"
#include "table/block_based/block_based_filter_block.h"
#include "table/block_based/block_based_table_reader.h"
@ -29,6 +32,7 @@
#include "util/hash.h"
#include "util/ribbon_config.h"
#include "util/ribbon_impl.h"
#include "util/string_util.h"
namespace ROCKSDB_NAMESPACE {
@ -1307,21 +1311,8 @@ Status XXPH3FilterBitsBuilder::MaybePostVerify(const Slice& filter_content) {
}
} // namespace
const std::vector<BloomFilterPolicy::Mode> BloomFilterPolicy::kAllFixedImpls = {
kLegacyBloom,
kDeprecatedBlock,
kFastLocalBloom,
kStandard128Ribbon,
};
const std::vector<BloomFilterPolicy::Mode> BloomFilterPolicy::kAllUserModes = {
kDeprecatedBlock,
kAutoBloom,
kStandard128Ribbon,
};
BloomFilterPolicy::BloomFilterPolicy(double bits_per_key, Mode mode)
: mode_(mode), warned_(false), aggregate_rounding_balance_(0) {
BloomLikeFilterPolicy::BloomLikeFilterPolicy(double bits_per_key)
: warned_(false), aggregate_rounding_balance_(0) {
// Sanitize bits_per_key
if (bits_per_key < 0.5) {
// Round down to no filter
@ -1353,13 +1344,47 @@ BloomFilterPolicy::BloomFilterPolicy(double bits_per_key, Mode mode)
whole_bits_per_key_ = (millibits_per_key_ + 500) / 1000;
}
BloomFilterPolicy::~BloomFilterPolicy() {}
BloomLikeFilterPolicy::~BloomLikeFilterPolicy() {}
const char* BuiltinFilterPolicy::Name() const {
return "rocksdb.BuiltinBloomFilter";
}
void BloomFilterPolicy::CreateFilter(const Slice* keys, int n, int bits_per_key,
const char* DeprecatedBlockBasedBloomFilterPolicy::kName() {
return "rocksdb.internal.DeprecatedBlockBasedBloomFilter";
}
std::string DeprecatedBlockBasedBloomFilterPolicy::GetId() const {
return kName() + GetBitsPerKeySuffix();
}
DeprecatedBlockBasedBloomFilterPolicy::DeprecatedBlockBasedBloomFilterPolicy(
double bits_per_key)
: BloomLikeFilterPolicy(bits_per_key) {}
FilterBitsBuilder* DeprecatedBlockBasedBloomFilterPolicy::GetBuilderWithContext(
const FilterBuildingContext&) const {
if (GetWholeBitsPerKey() == 0) {
// "No filter" special case
return nullptr;
}
// Internal contract: returns a new fake builder that encodes bits per key
// into a special value from EstimateEntriesAdded()
struct B : public FilterBitsBuilder {
explicit B(int bits_per_key) : est(kSecretBitsPerKeyStart + bits_per_key) {}
size_t est;
size_t EstimateEntriesAdded() override { return est; }
void AddKey(const Slice&) override {}
using FilterBitsBuilder::Finish; // FIXME
Slice Finish(std::unique_ptr<const char[]>*) override { return Slice(); }
size_t ApproximateNumEntries(size_t) override { return 0; }
};
return new B(GetWholeBitsPerKey());
}
void DeprecatedBlockBasedBloomFilterPolicy::CreateFilter(const Slice* keys,
int n,
int bits_per_key,
std::string* dst) {
// Compute bloom filter size (in both bits and bytes)
uint32_t bits = static_cast<uint32_t>(n * bits_per_key);
@ -1383,8 +1408,8 @@ void BloomFilterPolicy::CreateFilter(const Slice* keys, int n, int bits_per_key,
}
}
bool BloomFilterPolicy::KeyMayMatch(const Slice& key,
const Slice& bloom_filter) {
bool DeprecatedBlockBasedBloomFilterPolicy::KeyMayMatch(
const Slice& key, const Slice& bloom_filter) {
const size_t len = bloom_filter.size();
if (len < 2 || len > 0xffffffffU) {
return false;
@ -1406,13 +1431,31 @@ bool BloomFilterPolicy::KeyMayMatch(const Slice& key,
array);
}
BloomFilterPolicy::BloomFilterPolicy(double bits_per_key)
: BloomLikeFilterPolicy(bits_per_key) {}
FilterBitsBuilder* BloomFilterPolicy::GetBuilderWithContext(
const FilterBuildingContext& context) const {
if (millibits_per_key_ == 0) {
if (GetMillibitsPerKey() == 0) {
// "No filter" special case
return nullptr;
} else if (context.table_options.format_version < 5) {
return GetLegacyBloomBuilderWithContext(context);
} else {
return GetFastLocalBloomBuilderWithContext(context);
}
}
Mode cur = mode_;
const char* BloomFilterPolicy::kName() { return "bloomfilter"; }
std::string BloomFilterPolicy::GetId() const {
// Including ":false" for better forward-compatibility with 6.29 and earlier
// which required a boolean `use_block_based_builder` parameter
return kName() + GetBitsPerKeySuffix() + ":false";
}
FilterBitsBuilder* BloomLikeFilterPolicy::GetFastLocalBloomBuilderWithContext(
const FilterBuildingContext& context) const {
bool offm = context.table_options.optimize_filters_for_memory;
bool reserve_filter_construction_mem =
(context.table_options.reserve_table_builder_memory &&
@ -1422,47 +1465,14 @@ FilterBitsBuilder* BloomFilterPolicy::GetBuilderWithContext(
cache_res_mgr = std::make_shared<CacheReservationManager>(
context.table_options.block_cache);
}
// Unusual code construction so that we can have just
// one exhaustive switch without (risky) recursion
for (int i = 0; i < 2; ++i) {
switch (cur) {
case kAutoBloom:
if (context.table_options.format_version < 5) {
cur = kLegacyBloom;
} else {
cur = kFastLocalBloom;
}
break;
case kDeprecatedBlock: {
if (context.info_log && !warned_.load(std::memory_order_relaxed)) {
warned_ = true;
ROCKS_LOG_WARN(context.info_log,
"Using deprecated block-based Bloom filter is "
"inefficient (%d bits per key).",
whole_bits_per_key_);
}
// Internal contract: returns a new fake builder that encodes bits per
// key into a special value from EstimateEntriesAdded()
struct B : public FilterBitsBuilder {
explicit B(int bits_per_key)
: est(kSecretBitsPerKeyStart + bits_per_key) {}
size_t est;
size_t EstimateEntriesAdded() override { return est; }
void AddKey(const Slice&) override {}
using FilterBitsBuilder::Finish; // FIXME
Slice Finish(std::unique_ptr<const char[]>*) override {
return Slice();
}
size_t ApproximateNumEntries(size_t) override { return 0; }
};
return new B(GetWholeBitsPerKey());
}
case kFastLocalBloom:
return new FastLocalBloomBitsBuilder(
millibits_per_key_, offm ? &aggregate_rounding_balance_ : nullptr,
cache_res_mgr,
context.table_options.detect_filter_construct_corruption);
case kLegacyBloom:
}
FilterBitsBuilder* BloomLikeFilterPolicy::GetLegacyBloomBuilderWithContext(
const FilterBuildingContext& context) const {
if (whole_bits_per_key_ >= 14 && context.info_log &&
!warned_.load(std::memory_order_relaxed)) {
warned_ = true;
@ -1474,28 +1484,54 @@ FilterBitsBuilder* BloomFilterPolicy::GetBuilderWithContext(
}
// For more details, see
// https://github.com/facebook/rocksdb/wiki/RocksDB-Bloom-Filter
ROCKS_LOG_WARN(
context.info_log,
ROCKS_LOG_WARN(context.info_log,
"Using legacy Bloom filter with high (%d) bits/key. "
"%s filter space and/or accuracy improvement is available "
"with format_version>=5.",
whole_bits_per_key_, adjective);
}
return new LegacyBloomBitsBuilder(whole_bits_per_key_,
context.info_log);
case kStandard128Ribbon:
return new LegacyBloomBitsBuilder(whole_bits_per_key_, context.info_log);
}
FilterBitsBuilder*
BloomLikeFilterPolicy::GetStandard128RibbonBuilderWithContext(
const FilterBuildingContext& context) const {
// FIXME: code duplication with GetFastLocalBloomBuilderWithContext
bool offm = context.table_options.optimize_filters_for_memory;
bool reserve_filter_construction_mem =
(context.table_options.reserve_table_builder_memory &&
context.table_options.block_cache);
std::shared_ptr<CacheReservationManager> cache_res_mgr;
if (reserve_filter_construction_mem) {
cache_res_mgr = std::make_shared<CacheReservationManager>(
context.table_options.block_cache);
}
return new Standard128RibbonBitsBuilder(
desired_one_in_fp_rate_, millibits_per_key_,
offm ? &aggregate_rounding_balance_ : nullptr, cache_res_mgr,
context.table_options.detect_filter_construct_corruption,
context.info_log);
}
std::string BloomLikeFilterPolicy::GetBitsPerKeySuffix() const {
std::string rv = ":" + ROCKSDB_NAMESPACE::ToString(millibits_per_key_ / 1000);
int frac = millibits_per_key_ % 1000;
if (frac > 0) {
rv.push_back('.');
rv.push_back(static_cast<char>('0' + (frac / 100)));
frac %= 100;
if (frac > 0) {
rv.push_back(static_cast<char>('0' + (frac / 10)));
frac %= 10;
if (frac > 0) {
rv.push_back(static_cast<char>('0' + frac));
}
assert(false);
return nullptr; // something legal
}
}
return rv;
}
FilterBitsBuilder* BloomFilterPolicy::GetBuilderFromContext(
FilterBitsBuilder* BuiltinFilterPolicy::GetBuilderFromContext(
const FilterBuildingContext& context) {
if (context.table_options.filter_policy) {
return context.table_options.filter_policy->GetBuilderWithContext(context);
@ -1504,6 +1540,62 @@ FilterBitsBuilder* BloomFilterPolicy::GetBuilderFromContext(
}
}
// For testing only, but always constructable with internal names
namespace test {
const char* LegacyBloomFilterPolicy::kName() {
return "rocksdb.internal.LegacyBloomFilter";
}
std::string LegacyBloomFilterPolicy::GetId() const {
return kName() + GetBitsPerKeySuffix();
}
FilterBitsBuilder* LegacyBloomFilterPolicy::GetBuilderWithContext(
const FilterBuildingContext& context) const {
if (GetMillibitsPerKey() == 0) {
// "No filter" special case
return nullptr;
}
return GetLegacyBloomBuilderWithContext(context);
}
const char* FastLocalBloomFilterPolicy::kName() {
return "rocksdb.internal.FastLocalBloomFilter";
}
std::string FastLocalBloomFilterPolicy::GetId() const {
return kName() + GetBitsPerKeySuffix();
}
FilterBitsBuilder* FastLocalBloomFilterPolicy::GetBuilderWithContext(
const FilterBuildingContext& context) const {
if (GetMillibitsPerKey() == 0) {
// "No filter" special case
return nullptr;
}
return GetFastLocalBloomBuilderWithContext(context);
}
const char* Standard128RibbonFilterPolicy::kName() {
return "rocksdb.internal.Standard128RibbonFilter";
}
std::string Standard128RibbonFilterPolicy::GetId() const {
return kName() + GetBitsPerKeySuffix();
}
FilterBitsBuilder* Standard128RibbonFilterPolicy::GetBuilderWithContext(
const FilterBuildingContext& context) const {
if (GetMillibitsPerKey() == 0) {
// "No filter" special case
return nullptr;
}
return GetStandard128RibbonBuilderWithContext(context);
}
} // namespace test
BuiltinFilterBitsReader* BuiltinFilterPolicy::GetBuiltinFilterBitsReader(
const Slice& contents) {
uint32_t len_with_meta = static_cast<uint32_t>(contents.size());
@ -1679,70 +1771,58 @@ const FilterPolicy* NewBloomFilterPolicy(double bits_per_key,
bool /*use_block_based_builder*/) {
// NOTE: use_block_based_builder now ignored so block-based filter is no
// longer accessible in public API.
BloomFilterPolicy::Mode m = BloomFilterPolicy::kAutoBloom;
assert(std::find(BloomFilterPolicy::kAllUserModes.begin(),
BloomFilterPolicy::kAllUserModes.end(),
m) != BloomFilterPolicy::kAllUserModes.end());
return new BloomFilterPolicy(bits_per_key, m);
}
// Chooses between two filter policies based on LSM level, but
// only for Level and Universal compaction styles. Flush is treated
// as level -1. Policy b is considered fallback / primary policy.
LevelThresholdFilterPolicy::LevelThresholdFilterPolicy(
std::unique_ptr<const FilterPolicy>&& a,
std::unique_ptr<const FilterPolicy>&& b, int starting_level_for_b)
: policy_a_(std::move(a)),
policy_b_(std::move(b)),
starting_level_for_b_(starting_level_for_b) {
// Don't use this wrapper class if you were going to set to -1
assert(starting_level_for_b_ >= 0);
}
FilterBitsBuilder* LevelThresholdFilterPolicy::GetBuilderWithContext(
return new BloomFilterPolicy(bits_per_key);
}
RibbonFilterPolicy::RibbonFilterPolicy(double bloom_equivalent_bits_per_key,
int bloom_before_level)
: BloomLikeFilterPolicy(bloom_equivalent_bits_per_key),
bloom_before_level_(bloom_before_level) {}
FilterBitsBuilder* RibbonFilterPolicy::GetBuilderWithContext(
const FilterBuildingContext& context) const {
// Treat unknown same as bottommost
int levelish = INT_MAX;
switch (context.compaction_style) {
case kCompactionStyleLevel:
case kCompactionStyleUniversal: {
int levelish;
if (context.reason == TableFileCreationReason::kFlush) {
// Treat flush as level -1
assert(context.level_at_creation == 0);
levelish = -1;
} else if (context.level_at_creation == -1) {
// Unknown level
// Policy b considered fallback / primary
return policy_b_->GetBuilderWithContext(context);
assert(levelish == INT_MAX);
} else {
levelish = context.level_at_creation;
}
if (levelish >= starting_level_for_b_) {
return policy_b_->GetBuilderWithContext(context);
} else {
return policy_a_->GetBuilderWithContext(context);
}
break;
}
case kCompactionStyleFIFO:
case kCompactionStyleNone:
// Treat as bottommost
assert(levelish == INT_MAX);
break;
}
// Policy b considered fallback / primary
return policy_b_->GetBuilderWithContext(context);
if (levelish < bloom_before_level_) {
return GetFastLocalBloomBuilderWithContext(context);
} else {
return GetStandard128RibbonBuilderWithContext(context);
}
}
const char* RibbonFilterPolicy::kName() { return "ribbonfilter"; }
std::string RibbonFilterPolicy::GetId() const {
return kName() + GetBitsPerKeySuffix() + ":" +
ROCKSDB_NAMESPACE::ToString(bloom_before_level_);
}
const FilterPolicy* NewRibbonFilterPolicy(double bloom_equivalent_bits_per_key,
int bloom_before_level) {
std::unique_ptr<const FilterPolicy> ribbon_only{new BloomFilterPolicy(
bloom_equivalent_bits_per_key, BloomFilterPolicy::kStandard128Ribbon)};
if (bloom_before_level > -1) {
// Could also use Bloom policy
std::unique_ptr<const FilterPolicy> bloom_only{new BloomFilterPolicy(
bloom_equivalent_bits_per_key, BloomFilterPolicy::kFastLocalBloom)};
return new LevelThresholdFilterPolicy(
std::move(bloom_only), std::move(ribbon_only), bloom_before_level);
} else {
return ribbon_only.release();
}
return new RibbonFilterPolicy(bloom_equivalent_bits_per_key,
bloom_before_level);
}
FilterBuildingContext::FilterBuildingContext(
@ -1751,16 +1831,39 @@ FilterBuildingContext::FilterBuildingContext(
FilterPolicy::~FilterPolicy() { }
std::shared_ptr<const FilterPolicy> BloomLikeFilterPolicy::Create(
const std::string& name, double bits_per_key) {
if (name == test::LegacyBloomFilterPolicy::kName()) {
return std::make_shared<test::LegacyBloomFilterPolicy>(bits_per_key);
} else if (name == test::FastLocalBloomFilterPolicy::kName()) {
return std::make_shared<test::FastLocalBloomFilterPolicy>(bits_per_key);
} else if (name == test::Standard128RibbonFilterPolicy::kName()) {
return std::make_shared<test::Standard128RibbonFilterPolicy>(bits_per_key);
} else if (name == DeprecatedBlockBasedBloomFilterPolicy::kName()) {
return std::make_shared<DeprecatedBlockBasedBloomFilterPolicy>(
bits_per_key);
} else if (name == BloomFilterPolicy::kName()) {
// For testing
return std::make_shared<BloomFilterPolicy>(bits_per_key);
} else if (name == RibbonFilterPolicy::kName()) {
// For testing
return std::make_shared<RibbonFilterPolicy>(bits_per_key,
/*bloom_before_level*/ 0);
} else {
return nullptr;
}
}
Status FilterPolicy::CreateFromString(
const ConfigOptions& /*options*/, const std::string& value,
std::shared_ptr<const FilterPolicy>* policy) {
const std::string kBloomName = "bloomfilter:";
const std::string kRibbonName = "ribbonfilter:";
if (value == kNullptrString) {
policy->reset();
return Status::OK();
} else if (value == "rocksdb.BuiltinBloomFilter") {
*policy = std::make_shared<BuiltinFilterPolicy>();
} else {
*policy = std::make_shared<ReadOnlyBuiltinFilterPolicy>();
return Status::OK();
}
#ifndef ROCKSDB_LITE
const std::vector<std::string> vals = StringSplit(value, ':');
if (vals.size() < 2) {
@ -1768,10 +1871,14 @@ Status FilterPolicy::CreateFromString(
}
const std::string& name = vals[0];
double bits_per_key = ParseDouble(trim(vals[1]));
if (name == "bloomfilter") { // TODO: constants for names
// NOTE: ignoring obsolete bool for "use_block_based_builder"
policy->reset(NewBloomFilterPolicy(bits_per_key));
} else if (name == "ribbonfilter") {
if (name == BloomFilterPolicy::kName()) {
bool use_block_based_builder = false;
if (vals.size() > 2) {
use_block_based_builder =
ParseBoolean("use_block_based_builder", trim(vals[2]));
}
policy->reset(NewBloomFilterPolicy(bits_per_key, use_block_based_builder));
} else if (name == RibbonFilterPolicy::kName()) {
int bloom_before_level;
if (vals.size() < 3) {
bloom_before_level = 0;
@ -1780,26 +1887,28 @@ Status FilterPolicy::CreateFromString(
}
policy->reset(NewRibbonFilterPolicy(/*bloom_equivalent*/ bits_per_key,
bloom_before_level));
} else if (name == "rocksdb.internal.DeprecatedBlockBasedBloomFilter") {
*policy = std::make_shared<BloomFilterPolicy>(
bits_per_key, BloomFilterPolicy::kDeprecatedBlock);
} else if (name == "rocksdb.internal.LegacyBloomFilter") {
*policy = std::make_shared<BloomFilterPolicy>(
bits_per_key, BloomFilterPolicy::kLegacyBloom);
} else if (name == "rocksdb.internal.FastLocalBloomFilter") {
*policy = std::make_shared<BloomFilterPolicy>(
bits_per_key, BloomFilterPolicy::kFastLocalBloom);
} else if (name == "rocksdb.internal.Standard128RibbonFilter") {
*policy = std::make_shared<BloomFilterPolicy>(
bits_per_key, BloomFilterPolicy::kStandard128Ribbon);
} else {
*policy = BloomLikeFilterPolicy::Create(name, bits_per_key);
}
if (*policy) {
return Status::OK();
} else {
return Status::NotFound("Invalid filter policy name ", value);
}
#else
return Status::NotSupported("Cannot load filter policy in LITE mode ",
value);
return Status::NotSupported("Cannot load filter policy in LITE mode ", value);
#endif // ROCKSDB_LITE
}
return Status::OK();
const std::vector<std::string>& BloomLikeFilterPolicy::GetAllFixedImpls() {
STATIC_AVOID_DESTRUCTION(std::vector<std::string>, impls){
// Match filter_bench -impl=x ordering
test::LegacyBloomFilterPolicy::kName(),
DeprecatedBlockBasedBloomFilterPolicy::kName(),
test::FastLocalBloomFilterPolicy::kName(),
test::Standard128RibbonFilterPolicy::kName(),
};
return impls;
}
} // namespace ROCKSDB_NAMESPACE

262
table/block_based/filter_policy_internal.h
Unescape View File

@ -46,31 +46,41 @@ class BuiltinFilterBitsReader : public FilterBitsReader {
virtual bool HashMayMatch(const uint64_t /* h */) { return true; }
};
// Base class for RocksDB built-in filter policies. This can read all
// kinds of built-in filters (for backward compatibility with old
// OPTIONS files) but does not build filters, so new SST files generated
// under the policy will get no filters (like nullptr FilterPolicy).
// This class is considered internal API and subject to change.
// Base class for RocksDB built-in filter policies. This provides the
// ability to read all kinds of built-in filters (so that old filters can
// be used even when you change between built-in policies).
class BuiltinFilterPolicy : public FilterPolicy {
public:
static BuiltinFilterBitsReader* GetBuiltinFilterBitsReader(
const Slice& contents);
public: // overrides
// Shared name because any built-in policy can read filters from
// any other
// FIXME when making filter policies Configurable. For now, this
// is still rocksdb.BuiltinBloomFilter
const char* Name() const override;
// Convert to a string understood by FilterPolicy::CreateFromString
virtual std::string GetId() const = 0;
// Read metadata to determine what kind of FilterBitsReader is needed
// and return a new one. This must successfully process any filter data
// generated by a built-in FilterBitsBuilder, regardless of the impl
// chosen for this BloomFilterPolicy. Not compatible with CreateFilter.
FilterBitsReader* GetFilterBitsReader(const Slice& contents) const override;
// Does not write filters.
FilterBitsBuilder* GetBuilderWithContext(
const FilterBuildingContext&) const override {
return nullptr;
}
public: // new
// An internal function for the implementation of
// BuiltinFilterBitsReader::GetFilterBitsReader without requiring an instance
// or working around potential virtual overrides.
static BuiltinFilterBitsReader* GetBuiltinFilterBitsReader(
const Slice& contents);
// Returns a new FilterBitsBuilder from the filter_policy in
// table_options of a context, or nullptr if not applicable.
// (An internal convenience function to save boilerplate.)
static FilterBitsBuilder* GetBuilderFromContext(const FilterBuildingContext&);
protected:
// Deprecated block-based filter only (no longer in public API)
bool KeyMayMatch(const Slice& key, const Slice& bloom_filter) const;
private:
// For Bloom filter implementation(s) (except deprecated block-based filter)
@ -80,85 +90,58 @@ class BuiltinFilterPolicy : public FilterPolicy {
static BuiltinFilterBitsReader* GetRibbonBitsReader(const Slice& contents);
};
// RocksDB built-in filter policy for Bloom or Bloom-like filters including
// Ribbon filters.
// A "read only" filter policy used for backward compatibility with old
// OPTIONS files, which did not specifying a Bloom configuration, just
// "rocksdb.BuiltinBloomFilter". Although this can read existing filters,
// this policy does not build new filters, so new SST files generated
// under the policy will get no filters (like nullptr FilterPolicy).
// This class is considered internal API and subject to change.
// See NewBloomFilterPolicy and NewRibbonFilterPolicy.
class BloomFilterPolicy : public BuiltinFilterPolicy {
class ReadOnlyBuiltinFilterPolicy : public BuiltinFilterPolicy {
public:
// An internal marker for operating modes of BloomFilterPolicy, in terms
// of selecting an implementation. This makes it easier for tests to track
// or to walk over the built-in set of Bloom filter implementations. The
// only variance in BloomFilterPolicy by mode/implementation is in
// GetFilterBitsBuilder(), so an enum is practical here vs. subclasses.
//
// This enum is essentially the union of all the different kinds of return
// value from GetFilterBitsBuilder, or "underlying implementation", and
// higher-level modes that choose an underlying implementation based on
// context information.
enum Mode {
// Legacy implementation of Bloom filter for full and partitioned filters.
// Set to 0 in case of value confusion with bool use_block_based_builder
// NOTE: TESTING ONLY as this mode does not use best compatible
// implementation
kLegacyBloom = 0,
// Deprecated block-based Bloom filter implementation.
// Set to 1 in case of value confusion with bool use_block_based_builder
// NOTE: DEPRECATED but user exposed
kDeprecatedBlock = 1,
// A fast, cache-local Bloom filter implementation. See description in
// FastLocalBloomImpl.
// NOTE: TESTING ONLY as this mode does not check format_version
kFastLocalBloom = 2,
// A Bloom alternative saving about 30% space for ~3-4x construction
// CPU time. See ribbon_alg.h and ribbon_impl.h.
kStandard128Ribbon = 3,
// Automatically choose between kLegacyBloom and kFastLocalBloom based on
// context at build time, including compatibility with format_version.
kAutoBloom = 100,
};
// All the different underlying implementations that a BloomFilterPolicy
// might use, as a mode that says "always use this implementation."
// Only appropriate for unit tests.
static const std::vector<Mode> kAllFixedImpls;
// All the different modes of BloomFilterPolicy that are exposed from
// user APIs. Only appropriate for higher-level unit tests. Integration
// tests should prefer using NewBloomFilterPolicy (user-exposed).
static const std::vector<Mode> kAllUserModes;
// Convert to a string understood by FilterPolicy::CreateFromString
virtual std::string GetId() const override { return Name(); }
explicit BloomFilterPolicy(double bits_per_key, Mode mode);
~BloomFilterPolicy() override;
// For Deprecated block-based filter (no longer customizable in public API)
static void CreateFilter(const Slice* keys, int n, int bits_per_key,
std::string* dst);
static bool KeyMayMatch(const Slice& key, const Slice& bloom_filter);
// To use this function, call GetBuilderFromContext().
//
// Neither the context nor any objects therein should be saved beyond
// the call to this function, unless it's shared_ptr.
// Does not write filters.
FilterBitsBuilder* GetBuilderWithContext(
const FilterBuildingContext&) const override;
const FilterBuildingContext&) const override {
return nullptr;
}
};
// Internal contract: for kDeprecatedBlock, GetBuilderWithContext returns
// a new fake builder that encodes bits per key into a special value from
// EstimateEntriesAdded(), using kSecretBitsPerKeyStart + bits_per_key
static constexpr size_t kSecretBitsPerKeyStart = 1234567890U;
// RocksDB built-in filter policy for Bloom or Bloom-like filters including
// Ribbon filters.
// This class is considered internal API and subject to change.
// See NewBloomFilterPolicy and NewRibbonFilterPolicy.
class BloomLikeFilterPolicy : public BuiltinFilterPolicy {
public:
explicit BloomLikeFilterPolicy(double bits_per_key);
// Returns a new FilterBitsBuilder from the filter_policy in
// table_options of a context, or nullptr if not applicable.
// (An internal convenience function to save boilerplate.)
static FilterBitsBuilder* GetBuilderFromContext(const FilterBuildingContext&);
~BloomLikeFilterPolicy() override;
// Essentially for testing only: configured millibits/key
int GetMillibitsPerKey() const { return millibits_per_key_; }
// Essentially for testing only: legacy whole bits/key
int GetWholeBitsPerKey() const { return whole_bits_per_key_; }
// Testing only
Mode GetMode() const { return mode_; }
// All the different underlying implementations that a BloomLikeFilterPolicy
// might use, as a configuration string name for a testing mode for
// "always use this implementation." Only appropriate for unit tests.
static const std::vector<std::string>& GetAllFixedImpls();
// Convenience function for creating by name for fixed impls
static std::shared_ptr<const FilterPolicy> Create(const std::string& name,
double bits_per_key);
protected:
// Some implementations used by aggregating policies
FilterBitsBuilder* GetLegacyBloomBuilderWithContext(
const FilterBuildingContext& context) const;
FilterBitsBuilder* GetFastLocalBloomBuilderWithContext(
const FilterBuildingContext& context) const;
FilterBitsBuilder* GetStandard128RibbonBuilderWithContext(
const FilterBuildingContext& context) const;
std::string GetBitsPerKeySuffix() const;
private:
// Bits per key settings are for configuring Bloom filters.
@ -177,10 +160,6 @@ class BloomFilterPolicy : public BuiltinFilterPolicy {
// example, 100 -> 1% fp rate.
double desired_one_in_fp_rate_;
// Selected mode (a specific implementation or way of selecting an
// implementation) for building new SST filters.
Mode mode_;
// Whether relevant warnings have been logged already. (Remember so we
// only report once per BloomFilterPolicy instance, to keep the noise down.)
mutable std::atomic<bool> warned_;
@ -196,28 +175,111 @@ class BloomFilterPolicy : public BuiltinFilterPolicy {
mutable std::atomic<int64_t> aggregate_rounding_balance_;
};
// Chooses between two filter policies based on LSM level, but
// only for Level and Universal compaction styles. Flush is treated
// as level -1. Policy b is considered fallback / primary policy.
class LevelThresholdFilterPolicy : public BuiltinFilterPolicy {
// For NewBloomFilterPolicy
//
// This is a user-facing policy that automatically choose between
// LegacyBloom and FastLocalBloom based on context at build time,
// including compatibility with format_version.
class BloomFilterPolicy : public BloomLikeFilterPolicy {
public:
LevelThresholdFilterPolicy(std::unique_ptr<const FilterPolicy>&& a,
std::unique_ptr<const FilterPolicy>&& b,
int starting_level_for_b);
explicit BloomFilterPolicy(double bits_per_key);
// To use this function, call BuiltinFilterPolicy::GetBuilderFromContext().
//
// Neither the context nor any objects therein should be saved beyond
// the call to this function, unless it's shared_ptr.
FilterBitsBuilder* GetBuilderWithContext(
const FilterBuildingContext& context) const override;
const FilterBuildingContext&) const override;
static const char* kName();
std::string GetId() const override;
};
// For NewRibbonFilterPolicy
//
// This is a user-facing policy that chooses between Standard128Ribbon
// and FastLocalBloom based on context at build time (LSM level and other
// factors in extreme cases).
class RibbonFilterPolicy : public BloomLikeFilterPolicy {
public:
explicit RibbonFilterPolicy(double bloom_equivalent_bits_per_key,
int bloom_before_level);
inline int TEST_GetStartingLevelForB() const { return starting_level_for_b_; }
FilterBitsBuilder* GetBuilderWithContext(
const FilterBuildingContext&) const override;
inline const FilterPolicy* TEST_GetPolicyA() const { return policy_a_.get(); }
int GetBloomBeforeLevel() const { return bloom_before_level_; }
inline const FilterPolicy* TEST_GetPolicyB() const { return policy_b_.get(); }
static const char* kName();
std::string GetId() const override;
private:
const std::unique_ptr<const FilterPolicy> policy_a_;
const std::unique_ptr<const FilterPolicy> policy_b_;
int starting_level_for_b_;
const int bloom_before_level_;
};
// Deprecated block-based filter only. We still support reading old
// block-based filters from any BuiltinFilterPolicy, but there is no public
// option to build them. However, this class is used to build them for testing
// and for a public backdoor to building them by constructing this policy from
// a string.
class DeprecatedBlockBasedBloomFilterPolicy : public BloomLikeFilterPolicy {
public:
explicit DeprecatedBlockBasedBloomFilterPolicy(double bits_per_key);
// Internal contract: returns a new fake builder that encodes bits per key
// into a special value from EstimateEntriesAdded(), using
// kSecretBitsPerKeyStart
FilterBitsBuilder* GetBuilderWithContext(
const FilterBuildingContext&) const override;
static constexpr size_t kSecretBitsPerKeyStart = 1234567890U;
static const char* kName();
std::string GetId() const override;
static void CreateFilter(const Slice* keys, int n, int bits_per_key,
std::string* dst);
static bool KeyMayMatch(const Slice& key, const Slice& bloom_filter);
};
// For testing only, but always constructable with internal names
namespace test {
class LegacyBloomFilterPolicy : public BloomLikeFilterPolicy {
public:
explicit LegacyBloomFilterPolicy(double bits_per_key)
: BloomLikeFilterPolicy(bits_per_key) {}
FilterBitsBuilder* GetBuilderWithContext(
const FilterBuildingContext& context) const override;
static const char* kName();
std::string GetId() const override;
};
class FastLocalBloomFilterPolicy : public BloomLikeFilterPolicy {
public:
explicit FastLocalBloomFilterPolicy(double bits_per_key)
: BloomLikeFilterPolicy(bits_per_key) {}
FilterBitsBuilder* GetBuilderWithContext(
const FilterBuildingContext& context) const override;
static const char* kName();
std::string GetId() const override;
};
class Standard128RibbonFilterPolicy : public BloomLikeFilterPolicy {
public:
explicit Standard128RibbonFilterPolicy(double bloom_equiv_bits_per_key)
: BloomLikeFilterPolicy(bloom_equiv_bits_per_key) {}
FilterBitsBuilder* GetBuilderWithContext(
const FilterBuildingContext& context) const override;
static const char* kName();
std::string GetId() const override;
};
} // namespace test
} // namespace ROCKSDB_NAMESPACE

9
table/block_based/mock_block_based_table.h
Unescape View File

@ -4,6 +4,8 @@
// (found in the LICENSE.Apache file in the root directory).
#pragma once
#include <memory>
#include "rocksdb/filter_policy.h"
#include "table/block_based/block_based_filter_block.h"
#include "table/block_based/block_based_table_reader.h"
@ -30,10 +32,15 @@ class MockBlockBasedTableTester {
std::unique_ptr<BlockBasedTable> table_;
explicit MockBlockBasedTableTester(const FilterPolicy* filter_policy)
: MockBlockBasedTableTester(
std::shared_ptr<const FilterPolicy>(filter_policy)){};
explicit MockBlockBasedTableTester(
std::shared_ptr<const FilterPolicy> filter_policy)
: ioptions_(options_),
env_options_(options_),
icomp_(options_.comparator) {
table_options_.filter_policy.reset(filter_policy);
table_options_.filter_policy = std::move(filter_policy);
constexpr bool skip_filters = false;
constexpr bool immortal_table = false;

60
util/bloom_test.cc
Unescape View File

@ -39,6 +39,13 @@ DEFINE_int32(bits_per_key, 10, "");
namespace ROCKSDB_NAMESPACE {
namespace {
const std::string kLegacyBloom = test::LegacyBloomFilterPolicy::kName();
const std::string kFastLocalBloom = test::FastLocalBloomFilterPolicy::kName();
const std::string kStandard128Ribbon =
test::Standard128RibbonFilterPolicy::kName();
} // namespace
static const int kVerbose = 1;
static Slice Key(int i, char* buffer) {
@ -63,7 +70,7 @@ static int NextLength(int length) {
class BlockBasedBloomTest : public testing::Test {
private:
int bits_per_key_;
std::unique_ptr<const DeprecatedBlockBasedBloomFilterPolicy> policy_;
std::string filter_;
std::vector<std::string> keys_;
@ -76,9 +83,7 @@ class BlockBasedBloomTest : public testing::Test {
}
void ResetPolicy(double bits_per_key) {
bits_per_key_ =
BloomFilterPolicy(bits_per_key, BloomFilterPolicy::kDeprecatedBlock)
.GetWholeBitsPerKey();
policy_.reset(new DeprecatedBlockBasedBloomFilterPolicy(bits_per_key));
Reset();
}
@ -94,9 +99,9 @@ class BlockBasedBloomTest : public testing::Test {
key_slices.push_back(Slice(keys_[i]));
}
filter_.clear();
BloomFilterPolicy::CreateFilter(key_slices.data(),
static_cast<int>(key_slices.size()),
bits_per_key_, &filter_);
DeprecatedBlockBasedBloomFilterPolicy::CreateFilter(
&key_slices[0], static_cast<int>(key_slices.size()),
policy_->GetWholeBitsPerKey(), &filter_);
keys_.clear();
if (kVerbose >= 2) DumpFilter();
}
@ -122,7 +127,7 @@ class BlockBasedBloomTest : public testing::Test {
if (!keys_.empty()) {
Build();
}
return BloomFilterPolicy::KeyMayMatch(s, filter_);
return DeprecatedBlockBasedBloomFilterPolicy::KeyMayMatch(s, filter_);
}
double FalsePositiveRate() {
@ -264,7 +269,7 @@ TEST_F(BlockBasedBloomTest, Schema) {
// Different bits-per-byte
class FullBloomTest : public testing::TestWithParam<BloomFilterPolicy::Mode> {
class FullBloomTest : public testing::TestWithParam<std::string> {
protected:
BlockBasedTableOptions table_options_;
@ -285,9 +290,9 @@ class FullBloomTest : public testing::TestWithParam<BloomFilterPolicy::Mode> {
return dynamic_cast<BuiltinFilterBitsBuilder*>(bits_builder_.get());
}
const BloomFilterPolicy* GetBloomFilterPolicy() {
const BloomLikeFilterPolicy* GetBloomLikeFilterPolicy() {
// Throws on bad cast
return &dynamic_cast<const BloomFilterPolicy&>(*policy_);
return &dynamic_cast<const BloomLikeFilterPolicy&>(*policy_);
}
void Reset() {
@ -299,7 +304,7 @@ class FullBloomTest : public testing::TestWithParam<BloomFilterPolicy::Mode> {
}
void ResetPolicy(double bits_per_key) {
policy_.reset(new BloomFilterPolicy(bits_per_key, GetParam()));
policy_ = BloomLikeFilterPolicy::Create(GetParam(), bits_per_key);
Reset();
}
@ -420,7 +425,7 @@ TEST_P(FullBloomTest, FilterSize) {
{INFINITY, 100000},
{NAN, 100000}}) {
ResetPolicy(bpk.first);
auto bfp = GetBloomFilterPolicy();
auto bfp = GetBloomLikeFilterPolicy();
EXPECT_EQ(bpk.second, bfp->GetMillibitsPerKey());
EXPECT_EQ((bpk.second + 500) / 1000, bfp->GetWholeBitsPerKey());
@ -433,7 +438,7 @@ TEST_P(FullBloomTest, FilterSize) {
computed -= 0.5;
some_computed_less_than_denoted |= (computed < bpk.first);
ResetPolicy(computed);
bfp = GetBloomFilterPolicy();
bfp = GetBloomLikeFilterPolicy();
EXPECT_EQ(bpk.second, bfp->GetMillibitsPerKey());
EXPECT_EQ((bpk.second + 500) / 1000, bfp->GetWholeBitsPerKey());
@ -451,7 +456,7 @@ TEST_P(FullBloomTest, FilterSize) {
size_t n2 = bits_builder->ApproximateNumEntries(space);
EXPECT_GE(n2, n);
size_t space2 = bits_builder->CalculateSpace(n2);
if (n > 12000 && GetParam() == BloomFilterPolicy::kStandard128Ribbon) {
if (n > 12000 && GetParam() == kStandard128Ribbon) {
// TODO(peterd): better approximation?
EXPECT_GE(space2, space);
EXPECT_LE(space2 * 0.998, space * 1.0);
@ -568,14 +573,14 @@ TEST_P(FullBloomTest, OptimizeForMemory) {
}
int64_t ex_min_total_size = int64_t{FLAGS_bits_per_key} * total_keys / 8;
if (GetParam() == BloomFilterPolicy::kStandard128Ribbon) {
if (GetParam() == kStandard128Ribbon) {
// ~ 30% savings vs. Bloom filter
ex_min_total_size = 7 * ex_min_total_size / 10;
}
EXPECT_GE(static_cast<int64_t>(total_size), ex_min_total_size);
int64_t blocked_bloom_overhead = nfilters * (CACHE_LINE_SIZE + 5);
if (GetParam() == BloomFilterPolicy::kLegacyBloom) {
if (GetParam() == kLegacyBloom) {
// this config can add extra cache line to make odd number
blocked_bloom_overhead += nfilters * CACHE_LINE_SIZE;
}
@ -583,7 +588,7 @@ TEST_P(FullBloomTest, OptimizeForMemory) {
EXPECT_GE(total_mem, total_size);
// optimize_filters_for_memory not implemented with legacy Bloom
if (offm && GetParam() != BloomFilterPolicy::kLegacyBloom) {
if (offm && GetParam() != kLegacyBloom) {
// This value can include a small extra penalty for kExtraPadding
fprintf(stderr, "Internal fragmentation (optimized): %g%%\n",
(total_mem - total_size) * 100.0 / total_size);
@ -629,8 +634,8 @@ TEST(FullBloomFilterConstructionReserveMemTest,
lo.strict_capacity_limit = true;
std::shared_ptr<Cache> cache(NewLRUCache(lo));
table_options.block_cache = cache;
table_options.filter_policy.reset(new BloomFilterPolicy(
FLAGS_bits_per_key, BloomFilterPolicy::Mode::kStandard128Ribbon));
table_options.filter_policy =
BloomLikeFilterPolicy::Create(kStandard128Ribbon, FLAGS_bits_per_key);
FilterBuildingContext ctx(table_options);
std::unique_ptr<FilterBitsBuilder> filter_bits_builder(
table_options.filter_policy->GetBuilderWithContext(ctx));
@ -694,31 +699,31 @@ inline uint32_t SelectByCacheLineSize(uint32_t for64, uint32_t for128,
TEST_P(FullBloomTest, Schema) {
#define EXPECT_EQ_Bloom(a, b) \
{ \
if (GetParam() != BloomFilterPolicy::kStandard128Ribbon) { \
if (GetParam() != kStandard128Ribbon) { \
EXPECT_EQ(a, b); \
} \
}
#define EXPECT_EQ_Ribbon(a, b) \
{ \
if (GetParam() == BloomFilterPolicy::kStandard128Ribbon) { \
if (GetParam() == kStandard128Ribbon) { \
EXPECT_EQ(a, b); \
} \
}
#define EXPECT_EQ_FastBloom(a, b) \
{ \
if (GetParam() == BloomFilterPolicy::kFastLocalBloom) { \
if (GetParam() == kFastLocalBloom) { \
EXPECT_EQ(a, b); \
} \
}
#define EXPECT_EQ_LegacyBloom(a, b) \
{ \
if (GetParam() == BloomFilterPolicy::kLegacyBloom) { \
if (GetParam() == kLegacyBloom) { \
EXPECT_EQ(a, b); \
} \
}
#define EXPECT_EQ_NotLegacy(a, b) \
{ \
if (GetParam() != BloomFilterPolicy::kLegacyBloom) { \
if (GetParam() != kLegacyBloom) { \
EXPECT_EQ(a, b); \
} \
}
@ -1259,9 +1264,8 @@ TEST_P(FullBloomTest, CorruptFilters) {
}
INSTANTIATE_TEST_CASE_P(Full, FullBloomTest,
testing::Values(BloomFilterPolicy::kLegacyBloom,
BloomFilterPolicy::kFastLocalBloom,
BloomFilterPolicy::kStandard128Ribbon));
testing::Values(kLegacyBloom, kFastLocalBloom,
kStandard128Ribbon));
static double GetEffectiveBitsPerKey(FilterBitsBuilder* builder) {
union {

17
util/filter_bench.cc
Unescape View File

@ -31,6 +31,7 @@ int main() {
#include "util/random.h"
#include "util/stderr_logger.h"
#include "util/stop_watch.h"
#include "util/string_util.h"
using GFLAGS_NAMESPACE::ParseCommandLineFlags;
using GFLAGS_NAMESPACE::RegisterFlagValidator;
@ -140,6 +141,7 @@ using ROCKSDB_NAMESPACE::Arena;
using ROCKSDB_NAMESPACE::BlockContents;
using ROCKSDB_NAMESPACE::BloomFilterPolicy;
using ROCKSDB_NAMESPACE::BloomHash;
using ROCKSDB_NAMESPACE::BloomLikeFilterPolicy;
using ROCKSDB_NAMESPACE::BuiltinFilterBitsBuilder;
using ROCKSDB_NAMESPACE::CachableEntry;
using ROCKSDB_NAMESPACE::Cache;
@ -147,6 +149,7 @@ using ROCKSDB_NAMESPACE::EncodeFixed32;
using ROCKSDB_NAMESPACE::FastRange32;
using ROCKSDB_NAMESPACE::FilterBitsReader;
using ROCKSDB_NAMESPACE::FilterBuildingContext;
using ROCKSDB_NAMESPACE::FilterPolicy;
using ROCKSDB_NAMESPACE::FullFilterBlockReader;
using ROCKSDB_NAMESPACE::GetSliceHash;
using ROCKSDB_NAMESPACE::GetSliceHash64;
@ -287,6 +290,16 @@ static uint32_t DryRunHash64(Slice &s) {
return Lower32of64(GetSliceHash64(s));
}
const std::shared_ptr<const FilterPolicy> &GetPolicy() {
static std::shared_ptr<const FilterPolicy> policy;
if (!policy) {
policy = BloomLikeFilterPolicy::Create(
BloomLikeFilterPolicy::GetAllFixedImpls().at(FLAGS_impl),
FLAGS_bits_per_key);
}
return policy;
}
struct FilterBench : public MockBlockBasedTableTester {
std::vector<KeyMaker> kms_;
std::vector<FilterInfo> infos_;
@ -297,9 +310,7 @@ struct FilterBench : public MockBlockBasedTableTester {
StderrLogger stderr_logger_;
FilterBench()
: MockBlockBasedTableTester(new BloomFilterPolicy(
FLAGS_bits_per_key,
static_cast<BloomFilterPolicy::Mode>(FLAGS_impl))),
: MockBlockBasedTableTester(GetPolicy()),
random_(FLAGS_seed),
m_queries_(0) {
for (uint32_t i = 0; i < FLAGS_batch_size; ++i) {

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