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Maysam Yabandeh caf0f53a74 Index value delta encoding (#3983) 
Summary:
Given that index value is a BlockHandle, which is basically an <offset, size> pair we can apply delta encoding on the values. The first value at each index restart interval encoded the full BlockHandle but the rest encode only the size. Refer to IndexBlockIter::DecodeCurrentValue for the detail of the encoding. This reduces the index size which helps using the  block cache more efficiently. The feature is enabled with using format_version 4.

The feature comes with a bit of cpu overhead which should be paid back by the higher cache hits due to smaller index block size.
Results with sysbench read-only using 4k blocks and using 16 index restart interval:
Format 2:
19585   rocksdb read-only range=100
Format 3:
19569   rocksdb read-only range=100
Format 4:
19352   rocksdb read-only range=100
Pull Request resolved: https://github.com/facebook/rocksdb/pull/3983

Differential Revision: D8361343

Pulled By: maysamyabandeh

fbshipit-source-id: f882ee082322acac32b0072e2bdbb0b5f854e651
 		2018-08-09 16:58:40 -07:00
..
builder.cc Relax VersionStorageInfo::GetOverlappingInputs check (#4050) 2018-07-13 17:42:38 -07:00
builder.h Index value delta encoding (#3983) 2018-08-09 16:58:40 -07:00
c.cc Add bottommost_compression_opts to for bottommost_compression (#3985) 2018-06-27 17:42:38 -07:00
c_test.c comment unused parameters to turn on -Wunused-parameter flag 2018-04-12 17:59:16 -07:00
column_family.cc Skip deleted WALs during recovery 2018-05-03 15:43:09 -07:00
column_family.h Add max_subcompactions as a compaction option 2018-04-27 11:57:39 -07:00
column_family_test.cc Per-thread unique test db names (#4135) 2018-07-13 17:27:39 -07:00
compact_files_test.cc Per-thread unique test db names (#4135) 2018-07-13 17:27:39 -07:00
compacted_db_impl.cc Move prefix_extractor to MutableCFOptions 2018-05-21 14:43:11 -07:00
compacted_db_impl.h Comment out unused variables 2018-03-05 13:13:41 -08:00
compaction.cc Add bottommost_compression_opts to for bottommost_compression (#3985) 2018-06-27 17:42:38 -07:00
compaction.h Add bottommost_compression_opts to for bottommost_compression (#3985) 2018-06-27 17:42:38 -07:00
compaction_iteration_stats.h add counter for deletion dropping optimization 2017-08-19 14:10:08 -07:00
compaction_iterator.cc Range deletion performance improvements + cleanup (#4014) 2018-07-12 14:42:39 -07:00
compaction_iterator.h option for timing measurement of non-blocking ops during compaction (#4029) 2018-06-21 21:28:05 -07:00
compaction_iterator_test.cc option for timing measurement of non-blocking ops during compaction (#4029) 2018-06-21 21:28:05 -07:00
compaction_job.cc Relax VersionStorageInfo::GetOverlappingInputs check (#4050) 2018-07-13 17:42:38 -07:00
compaction_job.h Allow DB resume after background errors (#3997) 2018-06-28 12:34:40 -07:00
compaction_job_stats_test.cc Per-thread unique test db names (#4135) 2018-07-13 17:27:39 -07:00
compaction_job_test.cc Per-thread unique test db names (#4135) 2018-07-13 17:27:39 -07:00
compaction_picker.cc compaction: fix max_subcompactions option for CompactRange (#4082) 2018-07-05 20:12:56 -07:00
compaction_picker.h Add bottommost_compression_opts to for bottommost_compression (#3985) 2018-06-27 17:42:38 -07:00
compaction_picker_test.cc Remove random writes from SST file ingestion (#4172) 2018-07-27 16:12:23 -07:00
compaction_picker_universal.cc Remove random writes from SST file ingestion (#4172) 2018-07-27 16:12:23 -07:00
compaction_picker_universal.h Delete triggered compaction for universal style 2018-05-29 15:44:34 -07:00
comparator_db_test.cc Per-thread unique test db names (#4135) 2018-07-13 17:27:39 -07:00
convenience.cc Pin mmap files in ReadOnlyDB (#4053) 2018-06-27 17:13:34 -07:00
corruption_test.cc Per-thread unique test db names (#4135) 2018-07-13 17:27:39 -07:00
cuckoo_table_db_test.cc Per-thread unique test db names (#4135) 2018-07-13 17:27:39 -07:00
db_basic_test.cc Per-thread unique test db names (#4135) 2018-07-13 17:27:39 -07:00
db_blob_index_test.cc fix lite build 2017-10-17 08:57:09 -07:00
db_block_cache_test.cc LRUCache midpoint insertion 2018-05-24 15:57:33 -07:00
db_bloom_filter_test.cc PrefixMayMatch: remove unnecessary check for prefix_extractor_ (#4067) 2018-06-27 20:42:43 -07:00
db_compaction_filter_test.cc Remove tests from ROCKSDB_VALGRIND_RUN 2018-05-30 16:15:16 -07:00
db_compaction_test.cc Allow ttl to be changed dynamically (#4133) 2018-07-16 14:27:53 -07:00
db_dynamic_level_test.cc fix memory leak in two_level_iterator 2018-04-15 17:26:26 -07:00
db_encryption_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
db_filesnapshot.cc fix behavior does not match name for "IsFileDeletionsEnabled" 2018-03-21 22:13:34 -07:00
db_flush_test.cc Disable DBFlushTest.SyncFail and DBTest.GroupCommitTest on Travis (#4154) 2018-07-18 18:43:11 -07:00
db_impl.cc Index value delta encoding (#3983) 2018-08-09 16:58:40 -07:00
db_impl.h Trace and Replay for RocksDB (#3837) 2018-08-01 00:27:08 -07:00
db_impl_compaction_flush.cc Update JobContext. (#3949) 2018-08-03 17:42:34 -07:00
db_impl_debug.cc Allow DB resume after background errors (#3997) 2018-06-28 12:34:40 -07:00
db_impl_experimental.cc Update JobContext. (#3949) 2018-08-03 17:42:34 -07:00
db_impl_files.cc SetOptions Backup Race Condition (#4108) 2018-07-11 14:57:46 -07:00
db_impl_open.cc fix use-after-free error involving a temporary string (#4240) 2018-08-09 11:13:10 -07:00
db_impl_readonly.cc Trace and Replay for RocksDB (#3837) 2018-08-01 00:27:08 -07:00
db_impl_readonly.h allowing CompactFiles to return new file names 2018-03-15 11:58:12 -07:00
db_impl_write.cc Improve FullFilterBitsReader::HashMayMatch's doc (#4202) 2018-08-06 11:13:18 -07:00
db_info_dumper.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
db_info_dumper.h Change RocksDB License 2017-07-15 16:11:23 -07:00
db_inplace_update_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
db_io_failure_test.cc Fix LITE unit tests 2017-07-26 21:11:47 -07:00
db_iter.cc Range deletion performance improvements + cleanup (#4014) 2018-07-12 14:42:39 -07:00
db_iter.h Index value delta encoding (#3983) 2018-08-09 16:58:40 -07:00
db_iter_stress_test.cc Move prefix_extractor to MutableCFOptions 2018-05-21 14:43:11 -07:00
db_iter_test.cc Fix regression bug of Prev() with upper bound (#3989) 2018-06-12 16:57:36 -07:00
db_iterator_test.cc Fix bug when seeking backward against an out-of-bound iterator (#4187) 2018-07-25 17:14:01 -07:00
db_log_iter_test.cc fix memory leak in two_level_iterator 2018-04-15 17:26:26 -07:00
db_memtable_test.cc Comment out unused variables 2018-03-05 13:13:41 -08:00
db_merge_operator_test.cc WriteUnPrepared Txn: Disable seek to snapshot optimization (#3955) 2018-06-27 12:23:07 -07:00
db_options_test.cc PersistRocksDBOptions() to use WritableFileWriter 2018-05-21 16:42:22 -07:00
db_properties_test.cc Index value delta encoding (#3983) 2018-08-09 16:58:40 -07:00
db_range_del_test.cc Remove random writes from SST file ingestion (#4172) 2018-07-27 16:12:23 -07:00
db_sst_test.cc Simplify DBWithMaxSpaceAllowedRandomized (#4235) 2018-08-08 07:27:46 -07:00
db_statistics_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
db_table_properties_test.cc fix deletion-triggered compaction in table builder 2017-09-28 18:17:30 -07:00
db_tailing_iter_test.cc Remove managed iterator 2018-07-17 14:43:18 -07:00
db_test.cc Disable DBFlushTest.SyncFail and DBTest.GroupCommitTest on Travis (#4154) 2018-07-18 18:43:11 -07:00
db_test2.cc Trace and Replay for RocksDB (#3837) 2018-08-01 00:27:08 -07:00
db_test_util.cc Index value delta encoding (#3983) 2018-08-09 16:58:40 -07:00
db_test_util.h Index value delta encoding (#3983) 2018-08-09 16:58:40 -07:00
db_universal_compaction_test.cc Reformatting some recent changes (#4161) 2018-07-20 14:43:38 -07:00
db_wal_test.cc Skip deleted WALs during recovery 2018-05-03 15:43:09 -07:00
db_write_test.cc Suppress tsan lock-order-inversion on FlushWAL 2018-05-14 21:13:35 -07:00
dbformat.cc types: add kEntryBlobIndex for TablePropertiesCollector (#4233) 2018-08-06 18:27:44 -07:00
dbformat.h Refactor IndexBlockIter (#4141) 2018-07-16 17:13:10 -07:00
dbformat_test.cc Relax VersionStorageInfo::GetOverlappingInputs check (#4050) 2018-07-13 17:42:38 -07:00
deletefile_test.cc Per-thread unique test db names (#4135) 2018-07-13 17:27:39 -07:00
error_handler.cc Allow DB resume after background errors (#3997) 2018-06-28 12:34:40 -07:00
error_handler.h Allow DB resume after background errors (#3997) 2018-06-28 12:34:40 -07:00
error_handler_test.cc Allow DB resume after background errors (#3997) 2018-06-28 12:34:40 -07:00
event_helpers.cc comment unused parameters to turn on -Wunused-parameter flag 2018-04-12 17:59:16 -07:00
event_helpers.h Change RocksDB License 2017-07-15 16:11:23 -07:00
experimental.cc comment unused parameters to turn on -Wunused-parameter flag 2018-04-12 17:59:16 -07:00
external_sst_file_basic_test.cc Support range deletion tombstones in IngestExternalFile SSTs (#3778) 2018-07-13 22:43:09 -07:00
external_sst_file_ingestion_job.cc Remove random writes from SST file ingestion (#4172) 2018-07-27 16:12:23 -07:00
external_sst_file_ingestion_job.h Remove random writes from SST file ingestion (#4172) 2018-07-27 16:12:23 -07:00
external_sst_file_test.cc Pending output file number should be released after bulkload failure (#4145) 2018-07-17 14:13:16 -07:00
fault_injection_test.cc Per-thread unique test db names (#4135) 2018-07-13 17:27:39 -07:00
file_indexer.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
file_indexer.h Change RocksDB License 2017-07-15 16:11:23 -07:00
file_indexer_test.cc Comment out unused variables 2018-03-05 13:13:41 -08:00
filename_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
flush_job.cc Remove random writes from SST file ingestion (#4172) 2018-07-27 16:12:23 -07:00
flush_job.h Skip deleted WALs during recovery 2018-05-03 15:43:09 -07:00
flush_job_test.cc Remove random writes from SST file ingestion (#4172) 2018-07-27 16:12:23 -07:00
flush_scheduler.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
flush_scheduler.h Change RocksDB License 2017-07-15 16:11:23 -07:00
forward_iterator.cc Relax VersionStorageInfo::GetOverlappingInputs check (#4050) 2018-07-13 17:42:38 -07:00
forward_iterator.h Comment out unused variables 2018-03-05 13:13:41 -08:00
forward_iterator_bench.cc Per-thread unique test db names (#4135) 2018-07-13 17:27:39 -07:00
internal_stats.cc Add kOptionsStatistics to GetProperty() (#3966) 2018-06-15 17:28:01 -07:00
internal_stats.h Add kOptionsStatistics to GetProperty() (#3966) 2018-06-15 17:28:01 -07:00
job_context.h Update JobContext. (#3949) 2018-08-03 17:42:34 -07:00
listener_test.cc fix some text in comments. 2018-04-10 15:59:24 -07:00
log_format.h Change RocksDB License 2017-07-15 16:11:23 -07:00
log_reader.cc Add GCC 8 to Travis (#3433) 2018-07-13 10:58:06 -07:00
log_reader.h Suppress lint in old files 2018-01-29 12:56:42 -08:00
log_test.cc Add file name info to SequentialFileReader. (#4026) 2018-06-21 08:42:24 -07:00
log_writer.cc Pass manual_wal_flush also to the first wal file 2018-05-14 10:57:56 -07:00
log_writer.h Pass manual_wal_flush also to the first wal file 2018-05-14 10:57:56 -07:00
logs_with_prep_tracker.cc Skip deleted WALs during recovery 2018-05-03 15:43:09 -07:00
logs_with_prep_tracker.h Skip deleted WALs during recovery 2018-05-03 15:43:09 -07:00
malloc_stats.cc Disallow compactions if there isn't enough free space 2018-03-06 16:27:54 -08:00
malloc_stats.h Change RocksDB License 2017-07-15 16:11:23 -07:00
manual_compaction_test.cc Per-thread unique test db names (#4135) 2018-07-13 17:27:39 -07:00
memtable.cc Add GCC 8 to Travis (#3433) 2018-07-13 10:58:06 -07:00
memtable.h Index value delta encoding (#3983) 2018-08-09 16:58:40 -07:00
memtable_list.cc Support group commits of version edits (#3944) 2018-06-28 12:34:39 -07:00
memtable_list.h Skip deleted WALs during recovery 2018-05-03 15:43:09 -07:00
memtable_list_test.cc Per-thread unique test db names (#4135) 2018-07-13 17:27:39 -07:00
merge_context.h Change RocksDB License 2017-07-15 16:11:23 -07:00
merge_helper.cc Range deletion performance improvements + cleanup (#4014) 2018-07-12 14:42:39 -07:00
merge_helper.h Index value delta encoding (#3983) 2018-08-09 16:58:40 -07:00
merge_helper_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
merge_operator.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
merge_test.cc Per-thread unique test db names (#4135) 2018-07-13 17:27:39 -07:00
obsolete_files_test.cc Modify verification logic of ObsoleteOptionsFileTest (#4218) 2018-08-03 13:57:40 -07:00
options_file_test.cc Per-thread unique test db names (#4135) 2018-07-13 17:27:39 -07:00
perf_context_test.cc Per-thread unique test db names (#4135) 2018-07-13 17:27:39 -07:00
pinned_iterators_manager.h Change RocksDB License 2017-07-15 16:11:23 -07:00
plain_table_db_test.cc Per-thread unique test db names (#4135) 2018-07-13 17:27:39 -07:00
pre_release_callback.h Fix pre_release callback argument list. 2018-04-05 11:12:16 -07:00
prefix_test.cc Per-thread unique test db names (#4135) 2018-07-13 17:27:39 -07:00
range_del_aggregator.cc Add SST ingestion to ldb (#4205) 2018-08-09 14:29:11 -07:00
range_del_aggregator.h Support range deletion tombstones in IngestExternalFile SSTs (#3778) 2018-07-13 22:43:09 -07:00
range_del_aggregator_test.cc Relax VersionStorageInfo::GetOverlappingInputs check (#4050) 2018-07-13 17:42:38 -07:00
read_callback.h WriteUnPrepared Txn: Disable seek to snapshot optimization (#3955) 2018-06-27 12:23:07 -07:00
repair.cc Relax VersionStorageInfo::GetOverlappingInputs check (#4050) 2018-07-13 17:42:38 -07:00
repair_test.cc fix memory leak in two_level_iterator 2018-04-15 17:26:26 -07:00
snapshot_checker.h Comment out unused variables 2018-03-05 13:13:41 -08:00
snapshot_impl.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
snapshot_impl.h BlobDB: Fix VisibleToActiveSnapshot() (#4236) 2018-08-06 16:57:42 -07:00
table_cache.cc Index value delta encoding (#3983) 2018-08-09 16:58:40 -07:00
table_cache.h Index value delta encoding (#3983) 2018-08-09 16:58:40 -07:00
table_properties_collector.cc Comment out unused variables 2018-03-05 13:13:41 -08:00
table_properties_collector.h Comment out unused variables 2018-03-05 13:13:41 -08:00
table_properties_collector_test.cc Should only decode restart points for uncompressed blocks (#3996) 2018-06-15 19:26:58 -07:00
transaction_log_impl.cc WriteUnPrepared: Add support for recovering WriteUnprepared transactions (#4078) 2018-07-06 17:59:13 -07:00
transaction_log_impl.h WritePrepared Txn: Refactor conf params 2017-11-10 17:28:12 -08:00
version_builder.cc Remove random writes from SST file ingestion (#4172) 2018-07-27 16:12:23 -07:00
version_builder.h Move prefix_extractor to MutableCFOptions 2018-05-21 14:43:11 -07:00
version_builder_test.cc Remove random writes from SST file ingestion (#4172) 2018-07-27 16:12:23 -07:00
version_edit.cc Index value delta encoding (#3983) 2018-08-09 16:58:40 -07:00
version_edit.h Remove random writes from SST file ingestion (#4172) 2018-07-27 16:12:23 -07:00
version_edit_test.cc Skip deleted WALs during recovery 2018-05-03 15:43:09 -07:00
version_set.cc Remove random writes from SST file ingestion (#4172) 2018-07-27 16:12:23 -07:00
version_set.h Index value delta encoding (#3983) 2018-08-09 16:58:40 -07:00
version_set_test.cc Relax VersionStorageInfo::GetOverlappingInputs check (#4050) 2018-07-13 17:42:38 -07:00
wal_manager.cc Add file name info to SequentialFileReader. (#4026) 2018-06-21 08:42:24 -07:00
wal_manager.h Fix memleak when DB::DeleteFile() 2018-01-11 18:57:33 -08:00
wal_manager_test.cc Per-thread unique test db names (#4135) 2018-07-13 17:27:39 -07:00
write_batch.cc WriteUnPrepared: Implement unprepared batches for transactions (#4104) 2018-07-24 00:13:18 -07:00
write_batch_base.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
write_batch_internal.h WriteUnPrepared: Add new WAL marker kTypeBeginUnprepareXID (#4069) 2018-06-28 18:58:29 -07:00
write_batch_test.cc WriteUnPrepared: Add support for recovering WriteUnprepared transactions (#4078) 2018-07-06 17:59:13 -07:00
write_callback.h Change RocksDB License 2017-07-15 16:11:23 -07:00
write_callback_test.cc Per-thread unique test db names (#4135) 2018-07-13 17:27:39 -07:00
write_controller.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
write_controller.h Change RocksDB License 2017-07-15 16:11:23 -07:00
write_controller_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
write_thread.cc Fix write get stuck when pipelined write is enabled (#4143) 2018-07-17 17:27:51 -07:00
write_thread.h Fix write get stuck when pipelined write is enabled (#4143) 2018-07-17 17:27:51 -07:00