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Fenggang Wu 19ec44fd39 Improve point-lookup performance using a data block hash index (#4174) 
Summary:
Add hash index support to data blocks, which helps to reduce the CPU utilization of point-lookup operations. This feature is backward compatible with the data block created without the hash index. It is disabled by default unless `BlockBasedTableOptions::data_block_index_type` is set to `data_block_index_type = kDataBlockBinaryAndHash.`

The DB size would be bigger with the hash index option as a hash table is added at the end of each data block. If the hash utilization ratio is 1:1, the space overhead is one byte per key. The hash table utilization ratio is adjustable using `BlockBasedTableOptions::data_block_hash_table_util_ratio`. A lower utilization ratio will improve more on the point-lookup efficiency, but take more space too.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4174

Differential Revision: D8965914

Pulled By: fgwu

fbshipit-source-id: 1c6bae5d1fc39c80282d8890a72e9e67bc247198
2018-08-15 14:30:03 -07:00
..
adaptive_table_factory.cc Comment out unused variables 2018-03-05 13:13:41 -08:00
adaptive_table_factory.h Comment out unused variables 2018-03-05 13:13:41 -08:00
block_based_filter_block_test.cc Move prefix_extractor to MutableCFOptions 2018-05-21 14:43:11 -07:00
block_based_filter_block.cc PrefixMayMatch: remove unnecessary check for prefix_extractor_ (#4067) 2018-06-27 20:42:43 -07:00
block_based_filter_block.h Move prefix_extractor to MutableCFOptions 2018-05-21 14:43:11 -07:00
block_based_table_builder.cc Improve point-lookup performance using a data block hash index (#4174) 2018-08-15 14:30:03 -07:00
block_based_table_builder.h Write properties metablock last in block-based tables (#4158) 2018-07-20 09:11:59 -07:00
block_based_table_factory.cc Improve point-lookup performance using a data block hash index (#4174) 2018-08-15 14:30:03 -07:00
block_based_table_factory.h Improve point-lookup performance using a data block hash index (#4174) 2018-08-15 14:30:03 -07:00
block_based_table_reader.cc Improve point-lookup performance using a data block hash index (#4174) 2018-08-15 14:30:03 -07:00
block_based_table_reader.h Index value delta encoding (#3983) 2018-08-09 16:58:40 -07:00
block_builder.cc Improve point-lookup performance using a data block hash index (#4174) 2018-08-15 14:30:03 -07:00
block_builder.h Improve point-lookup performance using a data block hash index (#4174) 2018-08-15 14:30:03 -07:00
block_fetcher.cc Fix a bug caused by not copying the block trailer. (#4096) 2018-07-06 13:12:39 -07:00
block_fetcher.h Pin mmap files in ReadOnlyDB (#4053) 2018-06-27 17:13:34 -07:00
block_prefix_index.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
block_prefix_index.h Change RocksDB License 2017-07-15 16:11:23 -07:00
block_test.cc Index value delta encoding (#3983) 2018-08-09 16:58:40 -07:00
block.cc Improve point-lookup performance using a data block hash index (#4174) 2018-08-15 14:30:03 -07:00
block.h Improve point-lookup performance using a data block hash index (#4174) 2018-08-15 14:30:03 -07:00
bloom_block.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
bloom_block.h Change RocksDB License 2017-07-15 16:11:23 -07:00
cleanable_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
cuckoo_table_builder_test.cc Per-thread unique test db names (#4135) 2018-07-13 17:27:39 -07:00
cuckoo_table_builder.cc Enable MSVC W4 with a few exceptions. Fix warnings and bugs 2017-10-19 10:57:12 -07:00
cuckoo_table_builder.h Change RocksDB License 2017-07-15 16:11:23 -07:00
cuckoo_table_factory.cc Comment out unused variables 2018-03-05 13:13:41 -08:00
cuckoo_table_factory.h comment unused parameters to turn on -Wunused-parameter flag 2018-04-12 17:59:16 -07:00
cuckoo_table_reader_test.cc Per-thread unique test db names (#4135) 2018-07-13 17:27:39 -07:00
cuckoo_table_reader.cc Index value delta encoding (#3983) 2018-08-09 16:58:40 -07:00
cuckoo_table_reader.h Index value delta encoding (#3983) 2018-08-09 16:58:40 -07:00
data_block_footer.cc Improve point-lookup performance using a data block hash index (#4174) 2018-08-15 14:30:03 -07:00
data_block_footer.h Improve point-lookup performance using a data block hash index (#4174) 2018-08-15 14:30:03 -07:00
data_block_hash_index_test.cc Improve point-lookup performance using a data block hash index (#4174) 2018-08-15 14:30:03 -07:00
data_block_hash_index.cc Improve point-lookup performance using a data block hash index (#4174) 2018-08-15 14:30:03 -07:00
data_block_hash_index.h Improve point-lookup performance using a data block hash index (#4174) 2018-08-15 14:30:03 -07:00
filter_block.h use user_key and iterate_upper_bound to determine compatibility of bloom filters (#3899) 2018-06-26 15:57:26 -07:00
flush_block_policy.cc Align SST file data blocks to avoid spanning multiple pages 2018-03-26 20:26:10 -07:00
format.cc Index value delta encoding (#3983) 2018-08-09 16:58:40 -07:00
format.h Index value delta encoding (#3983) 2018-08-09 16:58:40 -07:00
full_filter_bits_builder.h Skip duplicate bloom keys when whole_key and prefix are mixed 2018-04-24 10:58:16 -07:00
full_filter_block_test.cc Move prefix_extractor to MutableCFOptions 2018-05-21 14:43:11 -07:00
full_filter_block.cc Charging block cache more accurately (#4073) 2018-06-29 08:57:20 -07:00
full_filter_block.h Charging block cache more accurately (#4073) 2018-06-29 08:57:20 -07:00
get_context.cc Avoid unnecessary big for-loop when reporting ticker stats stored in GetContext (#3490) 2018-07-20 16:58:13 -07:00
get_context.h Avoid unnecessary big for-loop when reporting ticker stats stored in GetContext (#3490) 2018-07-20 16:58:13 -07:00
index_builder.cc Fix wrong partitioned index size recorded in properties block (#4259) 2018-08-10 15:27:20 -07:00
index_builder.h Fix wrong partitioned index size recorded in properties block (#4259) 2018-08-10 15:27:20 -07:00
internal_iterator.h Index value delta encoding (#3983) 2018-08-09 16:58:40 -07:00
iter_heap.h Make InternalKeyComparator final and directly use it in merging iterator 2017-09-11 12:04:21 -07:00
iterator_wrapper.h Index value delta encoding (#3983) 2018-08-09 16:58:40 -07:00
iterator.cc Index value delta encoding (#3983) 2018-08-09 16:58:40 -07:00
merger_test.cc Make InternalKeyComparator final and directly use it in merging iterator 2017-09-11 12:04:21 -07:00
merging_iterator.cc Index value delta encoding (#3983) 2018-08-09 16:58:40 -07:00
merging_iterator.h Index value delta encoding (#3983) 2018-08-09 16:58:40 -07:00
meta_blocks.cc Index value delta encoding (#3983) 2018-08-09 16:58:40 -07:00
meta_blocks.h Index value delta encoding (#3983) 2018-08-09 16:58:40 -07:00
mock_table.cc Make BlockBasedTableIterator compaction-aware (#4048) 2018-06-25 13:19:27 -07:00
mock_table.h Make BlockBasedTableIterator compaction-aware (#4048) 2018-06-25 13:19:27 -07:00
partitioned_filter_block_test.cc Index value delta encoding (#3983) 2018-08-09 16:58:40 -07:00
partitioned_filter_block.cc Index value delta encoding (#3983) 2018-08-09 16:58:40 -07:00
partitioned_filter_block.h Index value delta encoding (#3983) 2018-08-09 16:58:40 -07:00
persistent_cache_helper.cc comment unused parameters to turn on -Wunused-parameter flag 2018-04-12 17:59:16 -07:00
persistent_cache_helper.h Change RocksDB License 2017-07-15 16:11:23 -07:00
persistent_cache_options.h Change RocksDB License 2017-07-15 16:11:23 -07:00
plain_table_builder.cc Move prefix_extractor to MutableCFOptions 2018-05-21 14:43:11 -07:00
plain_table_builder.h Move prefix_extractor to MutableCFOptions 2018-05-21 14:43:11 -07:00
plain_table_factory.cc Move prefix_extractor to MutableCFOptions 2018-05-21 14:43:11 -07:00
plain_table_factory.h Comment out unused variables 2018-03-05 13:13:41 -08:00
plain_table_index.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
plain_table_index.h Move prefix_extractor to MutableCFOptions 2018-05-21 14:43:11 -07:00
plain_table_key_coding.cc Comment out unused variables 2018-03-05 13:13:41 -08:00
plain_table_key_coding.h Change RocksDB License 2017-07-15 16:11:23 -07:00
plain_table_reader.cc Make BlockBasedTableIterator compaction-aware (#4048) 2018-06-25 13:19:27 -07:00
plain_table_reader.h Index value delta encoding (#3983) 2018-08-09 16:58:40 -07:00
scoped_arena_iterator.h Change RocksDB License 2017-07-15 16:11:23 -07:00
sst_file_writer_collectors.h Comment out unused variables 2018-03-05 13:13:41 -08:00
sst_file_writer.cc Support range deletion tombstones in IngestExternalFile SSTs (#3778) 2018-07-13 22:43:09 -07:00
table_builder.h Remove random writes from SST file ingestion (#4172) 2018-07-27 16:12:23 -07:00
table_properties_internal.h Index value delta encoding (#3983) 2018-08-09 16:58:40 -07:00
table_properties.cc Index value delta encoding (#3983) 2018-08-09 16:58:40 -07:00
table_reader_bench.cc Per-thread unique test db names (#4135) 2018-07-13 17:27:39 -07:00
table_reader.h Index value delta encoding (#3983) 2018-08-09 16:58:40 -07:00
table_test.cc Improve point-lookup performance using a data block hash index (#4174) 2018-08-15 14:30:03 -07:00
two_level_iterator.cc Index value delta encoding (#3983) 2018-08-09 16:58:40 -07:00
two_level_iterator.h Index value delta encoding (#3983) 2018-08-09 16:58:40 -07:00