andreacavalli/rocksdb
0
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity
da478f3eae
rocksdb/util
History
Peter Dillinger da478f3eae Fix major bug with MultiGet, DeleteRange, and memtable Bloom (#9453) 
Summary:
MemTable::MultiGet was not considering range tombstones before
querying Bloom filter. This means range tombstones would be skipped for
keys (or prefixes) with no other entries in the memtable. This could cause
old values for a key (in SST files) to still show up until the range tombstone
covering it has been flushed.

This is fixed by essentially disabling the memtable Bloom filter when there
are any range tombstones. (This could be better optimized in the future, but
good enough for now.)

Did some other cleanup/optimization in the same code to (more than) offset
the cost of checking on range tombstones in more cases. There is now
notable improvement when memtable_whole_key_filtering and prefix_extractor
are used together (unusual), and this makes MultiGet closer to the Get
implementation.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9453

Test Plan:
new unit test added. Added memtable Bloom to crash test.

Performance testing
--------------------

Build WAL-only DB (recovers to memtable):
```
TEST_TMPDIR=/dev/shm/rocksdb ./db_bench -benchmarks=fillrandom -num=1000000 -write_buffer_size=250000000
```

Query test command, to maximize sensitivity to the changed code:
```
TEST_TMPDIR=/dev/shm/rocksdb ./db_bench -use_existing_db -readonly -benchmarks=multireadrandom -num=10000000 -write_buffer_size=250000000 -memtable_bloom_size_ratio=0.015 -multiread_batched -batch_size=24 -threads=8 -memtable_whole_key_filtering=$MWKF -prefix_size=$PXS
```
(Note -num here is 10x larger for mostly memtable misses)

Before & after run simultaneously, average over 10 iterations per data point, ops/sec.

MWKF=0 PXS=0 (Bloom disabled)
Before: 5724844
After: 6722066

MWKF=0 PXS=7 (prefixes hardly unique; Bloom not useful)
Before: 9981319
After: 10237990

MWKF=0 PXS=8 (prefixes unique; Bloom useful)
Before:  12081715
After: 12117603

MWKF=1 PXS=0 (whole key Bloom useful)
Before: 11944354
After: 12096085

MWKF=1 PXS=7 (whole key Bloom useful in new version; prefixes not useful in old version)
Before: 9444299
After: 11826029

MWKF=1 PXS=7 (whole key Bloom useful in new version; prefixes useful in old version)
Before: 11784465
After: 11778591

Only in this last case is the 'before' *slightly* faster, perhaps because hashing prefixes is slightly faster than hashing whole keys. Otherwise, 'after' is faster.

Reviewed By: ajkr

Differential Revision: D33805025

Pulled By: pdillinger

fbshipit-source-id: 597523cae4f4eafdf6ae6bb2bc6cb46f83b017bf
2022-01-31 11:32:04 -08:00
..
aligned_buffer.h Fix wrong comments about function TruncateToPageBoundary. (#6975) 2020-10-07 12:34:34 -07:00
autovector_test.cc Replace most typedef with using= (#8751) 2021-09-07 11:31:59 -07:00
autovector.h Replace most typedef with using= (#8751) 2021-09-07 11:31:59 -07:00
bloom_impl.h Ribbon: InterleavedSolutionStorage (#7598) 2020-11-03 12:46:36 -08:00
bloom_test.cc Release cache reservation of hash entries of the fall-back Ribbon Filter earlier (#9345) 2022-01-07 11:25:21 -08:00
build_version.cc.in Make builds reproducible (#7866) 2021-01-28 17:42:16 -08:00
cast_util.h More refactoring ahead of footer & meta changes (#9240) 2021-12-10 08:13:26 -08:00
channel.h Fix and detect headers with missing dependencies (#8893) 2021-09-10 10:00:26 -07:00
coding_lean.h New stable, fixed-length cache keys (#9126) 2021-12-16 17:15:13 -08:00
coding_test.cc Fix potential overflow of unsigned type in for loop (#6902) 2020-06-02 15:05:07 -07:00
coding.cc Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
coding.h More refactoring ahead of footer & meta changes (#9240) 2021-12-10 08:13:26 -08:00
compaction_job_stats_impl.cc Update compaction statistics to include the amount of data read from blob files (#8022) 2021-03-04 00:43:48 -08:00
comparator.cc Restore Regex support for ObjectLibrary::Register, rename new APIs to allow old one to be deprecated in the future (#9362) 2022-01-11 06:33:48 -08:00
compression_context_cache.cc Remove using namespace (#9369) 2022-01-12 09:31:12 -08:00
compression_context_cache.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
compression.h Add support for building on s390x platform (#8962) 2021-10-22 10:13:15 -07:00
concurrent_task_limiter_impl.cc Remove TaskLimiterToken::ReleaseOnce for fix (#8567) 2021-07-21 17:37:53 -07:00
concurrent_task_limiter_impl.h Remove TaskLimiterToken::ReleaseOnce for fix (#8567) 2021-07-21 17:37:53 -07:00
core_local.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
crc32c_arm64.cc Mac M1 crc32 intrinsics ARM64 check support proposal (#7893) 2021-03-10 09:05:56 -08:00
crc32c_arm64.h Fix compilation on Apple Silicon (#7714) 2020-12-04 15:22:33 -08:00
crc32c_ppc_asm.S Fix Compilation on ppc64le using Clang 11 (#7713) 2020-12-01 11:21:44 -08:00
crc32c_ppc_constants.h Remove PATENTS text from a few straggler files (#5326) 2019-05-21 16:22:35 -07:00
crc32c_ppc.c Fix Compilation on ppc64le using Clang 11 (#7713) 2020-12-01 11:21:44 -08:00
crc32c_ppc.h Fix and detect headers with missing dependencies (#8893) 2021-09-10 10:00:26 -07:00
crc32c_test.cc Implementation of Crc32c combine function (#8305) 2021-06-16 18:30:34 -07:00
crc32c.cc Replace most typedef with using= (#8751) 2021-09-07 11:31:59 -07:00
crc32c.h Implementation of Crc32c combine function (#8305) 2021-06-16 18:30:34 -07:00
defer_test.cc Fix insecure internal API for GetImpl (#8590) 2021-07-29 17:23:01 -07:00
defer.h Fix and detect headers with missing dependencies (#8893) 2021-09-10 10:00:26 -07:00
duplicate_detector.h Cleanup includes in dbformat.h (#8930) 2021-09-29 04:04:40 -07:00
dynamic_bloom_test.cc Use SystemClock* instead of std::shared_ptr<SystemClock> in lower level routines (#8033) 2021-03-15 04:34:11 -07:00
dynamic_bloom.cc Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
dynamic_bloom.h Fix major bug with MultiGet, DeleteRange, and memtable Bloom (#9453) 2022-01-31 11:32:04 -08:00
fastrange.h Fix and detect headers with missing dependencies (#8893) 2021-09-10 10:00:26 -07:00
file_checksum_helper.cc Restore Regex support for ObjectLibrary::Register, rename new APIs to allow old one to be deprecated in the future (#9362) 2022-01-11 06:33:48 -08:00
file_checksum_helper.h New stable, fixed-length cache keys (#9126) 2021-12-16 17:15:13 -08:00
file_reader_writer_test.cc Add listener API that notifies on IOError (#9177) 2021-11-18 17:11:19 -08:00
filelock_test.cc Fix MSVC-related build issues (#7439) 2020-10-01 09:23:04 -07:00
filter_bench.cc Account Bloom/Ribbon filter construction memory in global memory limit (#9073) 2021-11-18 09:42:20 -08:00
gflags_compat.h Fix many tests to run with MEM_ENV and ENCRYPTED_ENV; Introduce a MemoryFileSystem class (#7566) 2020-10-27 10:33:09 -07:00
hash128.h Upgrade xxhash, add Hash128 (#8634) 2021-08-20 18:41:51 -07:00
hash_map.h Change HashMap::Insert()'s value to a const reference (#6567) 2020-03-20 14:59:54 -07:00
hash_test.cc New stable, fixed-length cache keys (#9126) 2021-12-16 17:15:13 -08:00
hash.cc Experimental support for SST unique IDs (#8990) 2021-10-18 23:32:01 -07:00
hash.h Experimental support for SST unique IDs (#8990) 2021-10-18 23:32:01 -07:00
heap_test.cc Revert "Update googletest from 1.8.1 to 1.10.0 (#6808)" (#6923) 2020-06-03 15:55:03 -07:00
heap.h Avoid self-move-assign in pop operation of binary heap. (#7942) 2021-02-19 13:47:25 -08:00
kv_map.h Replace most typedef with using= (#8751) 2021-09-07 11:31:59 -07:00
log_write_bench.cc Add a SystemClock class to capture the time functions of an Env (#7858) 2021-01-25 22:09:11 -08:00
math128.h New stable, fixed-length cache keys (#9126) 2021-12-16 17:15:13 -08:00
math.h New stable, fixed-length cache keys (#9126) 2021-12-16 17:15:13 -08:00
murmurhash.cc C++20 compatibility (#6697) 2020-04-20 13:24:25 -07:00
murmurhash.h Replace most typedef with using= (#8751) 2021-09-07 11:31:59 -07:00
mutexlock.h Prevents Table Cache to open same files more times (#6707) 2020-04-21 13:16:31 -07:00
ppc-opcode.h Remove PATENTS text from a few straggler files (#5326) 2019-05-21 16:22:35 -07:00
random_test.cc Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
random.cc Add De/Serialization for CompactionInput/Result (#8247) 2021-05-12 12:36:43 -07:00
random.h Experimental support for SST unique IDs (#8990) 2021-10-18 23:32:01 -07:00
rate_limiter_test.cc Make RateLimiter Customizable (#9141) 2021-12-01 06:57:02 -08:00
rate_limiter.cc Restore Regex support for ObjectLibrary::Register, rename new APIs to allow old one to be deprecated in the future (#9362) 2022-01-11 06:33:48 -08:00
rate_limiter.h Make RateLimiter Customizable (#9141) 2021-12-01 06:57:02 -08:00
regex.cc Improve support for using regexes (#8740) 2021-09-07 13:05:23 -07:00
repeatable_thread_test.cc Use SystemClock* instead of std::shared_ptr<SystemClock> in lower level routines (#8033) 2021-03-15 04:34:11 -07:00
repeatable_thread.h Use SystemClock* instead of std::shared_ptr<SystemClock> in lower level routines (#8033) 2021-03-15 04:34:11 -07:00
ribbon_alg.h Refine Ribbon configuration, improve testing, add Homogeneous (#7879) 2021-02-26 08:50:42 -08:00
ribbon_config.cc Refine Ribbon configuration, improve testing, add Homogeneous (#7879) 2021-02-26 08:50:42 -08:00
ribbon_config.h Refine Ribbon configuration, improve testing, add Homogeneous (#7879) 2021-02-26 08:50:42 -08:00
ribbon_impl.h Account Bloom/Ribbon filter construction memory in global memory limit (#9073) 2021-11-18 09:42:20 -08:00
ribbon_test.cc Upgrade xxhash, add Hash128 (#8634) 2021-08-20 18:41:51 -07:00
set_comparator.h Fix and detect headers with missing dependencies (#8893) 2021-09-10 10:00:26 -07:00
slice_test.cc Improve support for using regexes (#8740) 2021-09-07 13:05:23 -07:00
slice_transform_test.cc Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
slice.cc Fast path for detecting unchanged prefix_extractor (#9407) 2022-01-21 11:37:46 -08:00
status.cc Add remote compaction public API (#8300) 2021-05-19 21:41:31 -07:00
stderr_logger.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
stop_watch.h Use SystemClock* instead of std::shared_ptr<SystemClock> in lower level routines (#8033) 2021-03-15 04:34:11 -07:00
string_util.cc Remove some unneeded code (#8736) 2021-09-01 14:28:58 -07:00
string_util.h Experimental support for SST unique IDs (#8990) 2021-10-18 23:32:01 -07:00
thread_guard.h Introduce a ThreadGuard class and use it in ExternalSSTFileTest.PickedLevelBug (#8112) 2021-03-25 22:08:58 -07:00
thread_list_test.cc fix thread status synchronization in thread_list_test (#7825) 2021-01-04 10:46:24 -08:00
thread_local_test.cc Add StartThread type checking wrapper (#8303) 2021-05-19 16:51:13 -07:00
thread_local.cc Fix typo in ThreadData comment (#7131) 2020-07-15 09:23:23 -07:00
thread_local.h Replace most typedef with using= (#8751) 2021-09-07 11:31:59 -07:00
thread_operation.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
threadpool_imp.cc Remove incremental ID from background thread pool names (#9165) 2021-11-16 18:26:12 -08:00
threadpool_imp.h Make it able to lower cpu priority to specific level in threadpool (#6969) 2020-06-13 13:25:20 -07:00
timer_queue_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
timer_queue.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
timer_test.cc Skip directory fsync for filesystem btrfs (#8903) 2021-11-03 12:21:27 -07:00
timer.h Use SystemClock* instead of std::shared_ptr<SystemClock> in lower level routines (#8033) 2021-03-15 04:34:11 -07:00
user_comparator_wrapper.h Enable backward iterator for keys with user-defined timestamp (#8035) 2021-03-10 11:15:46 -08:00
vector_iterator.h Cleanup multiple implementations of VectorIterator (#8901) 2021-10-06 07:48:31 -07:00
work_queue_test.cc Add pipelined & parallel compression optimization (#6262) 2020-04-01 16:40:18 -07:00
work_queue.h Fix and detect headers with missing dependencies (#8893) 2021-09-10 10:00:26 -07:00
xxhash.cc Upgrade xxhash, add Hash128 (#8634) 2021-08-20 18:41:51 -07:00
xxhash.h Upgrade xxhash, add Hash128 (#8634) 2021-08-20 18:41:51 -07:00
xxph3.h Fix and detect headers with missing dependencies (#8893) 2021-09-10 10:00:26 -07:00