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9fad3e21eb
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Siying Dong 9fad3e21eb Merging iterator to avoid child iterator reseek for some cases (#5286) 
Summary:
When reseek happens in merging iterator, reseeking a child iterator can be avoided if:
(1) the iterator represents imutable data
(2) reseek() to a larger key than the current key
(3) the current key of the child iterator is larger than the seek key
because it is guaranteed that the result will fall into the same position.

This optimization will be useful for use cases where users keep seeking to keys nearby in ascending order.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/5286

Differential Revision: D15283635

Pulled By: siying

fbshipit-source-id: 35f79ffd5ce3609146faa8cd55f2bfd733502f83
2019-05-09 14:20:04 -07:00
..
adaptive_table_factory.cc Add copyright headers per FB open-source checkup tool. (#5199) 2019-04-18 10:55:01 -07:00
adaptive_table_factory.h Add copyright headers per FB open-source checkup tool. (#5199) 2019-04-18 10:55:01 -07:00
block_based_filter_block_test.cc Apply automatic formatting to some files (#5114) 2019-03-27 16:24:45 -07:00
block_based_filter_block.cc Apply automatic formatting to some files (#5114) 2019-03-27 16:24:45 -07:00
block_based_filter_block.h Apply automatic formatting to some files (#5114) 2019-03-27 16:24:45 -07:00
block_based_table_builder.cc Fix compilation errors for 32bits/LITE/ios build. (#5220) 2019-04-22 16:02:16 -07:00
block_based_table_builder.h Periodic Compactions (#5166) 2019-04-10 19:31:18 -07:00
block_based_table_factory.cc Add BlockBasedTableOptions::index_shortening (#5174) 2019-04-22 08:20:35 -07:00
block_based_table_factory.h Add BlockBasedTableOptions::index_shortening (#5174) 2019-04-22 08:20:35 -07:00
block_based_table_reader.cc avoid updating index type during iterator creation (#5288) 2019-05-07 20:20:40 -07:00
block_based_table_reader.h Merging iterator to avoid child iterator reseek for some cases (#5286) 2019-05-09 14:20:04 -07:00
block_builder.cc Apply automatic formatting to some files (#5114) 2019-03-27 16:24:45 -07:00
block_builder.h Apply automatic formatting to some files (#5114) 2019-03-27 16:24:45 -07:00
block_fetcher.cc Apply automatic formatting to some files (#5114) 2019-03-27 16:24:45 -07:00
block_fetcher.h Cache dictionary used for decompressing data blocks (#4881) 2019-01-23 18:15:47 -08:00
block_prefix_index.cc Apply automatic formatting to some files (#5114) 2019-03-27 16:24:45 -07:00
block_prefix_index.h Apply automatic formatting to some files (#5114) 2019-03-27 16:24:45 -07:00
block_test.cc Apply automatic formatting to some files (#5114) 2019-03-27 16:24:45 -07:00
block.cc Reduce binary search when reseek into the same data block (#5256) 2019-05-01 14:26:30 -07:00
block.h Introduce InternalIteratorBase::NextAndGetResult() (#5197) 2019-04-18 11:12:39 -07:00
bloom_block.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
bloom_block.h Disallow customized hash function in DynamicBloom (#4915) 2019-01-24 10:34:30 -08:00
cleanable_test.cc Change RocksDB License 2017-07-15 16:11:23 -07:00
cuckoo_table_builder_test.cc Update all unique/shared_ptr instances to be qualified with namespace std (#4638) 2018-11-09 11:19:58 -08:00
cuckoo_table_builder.cc Promote rocksdb.{deleted.keys,merge.operands} to main table properties (#4594) 2018-10-30 15:34:27 -07:00
cuckoo_table_builder.h Change RocksDB License 2017-07-15 16:11:23 -07:00
cuckoo_table_factory.cc Update all unique/shared_ptr instances to be qualified with namespace std (#4638) 2018-11-09 11:19:58 -08:00
cuckoo_table_factory.h Update all unique/shared_ptr instances to be qualified with namespace std (#4638) 2018-11-09 11:19:58 -08:00
cuckoo_table_reader_test.cc Update all unique/shared_ptr instances to be qualified with namespace std (#4638) 2018-11-09 11:19:58 -08:00
cuckoo_table_reader.cc Apply modernize-use-override (2nd iteration) 2019-02-14 14:41:36 -08:00
cuckoo_table_reader.h Index value delta encoding (#3983) 2018-08-09 16:58:40 -07:00
data_block_footer.cc Add db_bench options of data block hash index (#4281) 2018-08-16 18:42:46 -07:00
data_block_footer.h Add db_bench options of data block hash index (#4281) 2018-08-16 18:42:46 -07:00
data_block_hash_index_test.cc Feature for sampling and reporting compressibility (#4842) 2019-03-18 12:15:34 -07:00
data_block_hash_index.cc DataBlockHashIndex: Remove the division from EstimateSize() (#4293) 2018-08-20 23:13:50 -07:00
data_block_hash_index.h DataBlockHashIndex: Remove the division from EstimateSize() (#4293) 2018-08-20 23:13:50 -07:00
filter_block.h Remove a couple of non-public includes from public header file (#5219) 2019-04-19 11:10:33 -07:00
flush_block_policy.cc Apply modernize-use-override (2nd iteration) 2019-02-14 14:41:36 -08:00
flush_block_policy.h Avoid per-key upper bound check in BlockBasedTableIterator (#5142) 2019-04-16 11:37:47 -07:00
format.cc Apply automatic formatting to some files (#5114) 2019-03-27 16:24:45 -07:00
format.h Apply automatic formatting to some files (#5114) 2019-03-27 16:24:45 -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 Introduce a new MultiGet batching implementation (#5011) 2019-04-11 14:28:26 -07:00
full_filter_block.cc Fix bugs detected by clang analyzer (#5185) 2019-04-12 10:45:56 -07:00
full_filter_block.h Introduce a new MultiGet batching implementation (#5011) 2019-04-11 14:28:26 -07:00
get_context.cc PlainTable should avoid copying Get() results from immortal source. (#4924) 2019-01-25 17:12:19 -08:00
get_context.h Introduce a new MultiGet batching implementation (#5011) 2019-04-11 14:28:26 -07:00
index_builder.cc Add BlockBasedTableOptions::index_shortening (#5174) 2019-04-22 08:20:35 -07:00
index_builder.h Add BlockBasedTableOptions::index_shortening (#5174) 2019-04-22 08:20:35 -07:00
internal_iterator.h Merging iterator to avoid child iterator reseek for some cases (#5286) 2019-05-09 14:20:04 -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 Merging iterator to avoid child iterator reseek for some cases (#5286) 2019-05-09 14:20:04 -07:00
iterator.cc Add back NewEmptyIterator (#5203) 2019-04-16 20:28:05 -07:00
merger_test.cc Apply modernize-use-override (2nd iteration) 2019-02-14 14:41:36 -08:00
merging_iterator.cc Merging iterator to avoid child iterator reseek for some cases (#5286) 2019-05-09 14:20:04 -07:00
merging_iterator.h Index value delta encoding (#3983) 2018-08-09 16:58:40 -07:00
meta_blocks.cc Fix compilation errors for 32bits/LITE/ios build. (#5220) 2019-04-22 16:02:16 -07:00
meta_blocks.h Feature for sampling and reporting compressibility (#4842) 2019-03-18 12:15:34 -07:00
mock_table.cc Refresh snapshot list during long compactions (2nd attempt) (#5278) 2019-05-03 17:30:22 -07:00
mock_table.h Refresh snapshot list during long compactions (2nd attempt) (#5278) 2019-05-03 17:30:22 -07:00
multiget_context.h multiget: fix memory issues due to vector auto resizing (#5279) 2019-05-03 15:58:43 -07:00
partitioned_filter_block_test.cc Apply modernize-use-override (2nd iteration) 2019-02-14 14:41:36 -08:00
partitioned_filter_block.cc Fix bug in partition filters with format_version=4 (#4381) 2018-09-17 17:28:15 -07:00
partitioned_filter_block.h Fix bug in partition filters with format_version=4 (#4381) 2018-09-17 17:28:15 -07:00
persistent_cache_helper.cc Remove two variables from BlockContents class and don't use class Block for compressed block (#4650) 2018-11-13 17:02:55 -08:00
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 Revert "Remove PlainTable's feature store_index_in_file (#4914)" (#5034) 2019-03-01 15:45:45 -08:00
plain_table_builder.h Revert "Remove PlainTable's feature store_index_in_file (#4914)" (#5034) 2019-03-01 15:45:45 -08:00
plain_table_factory.cc Add copyright headers per FB open-source checkup tool. (#5199) 2019-04-18 10:55:01 -07:00
plain_table_factory.h Add copyright headers per FB open-source checkup tool. (#5199) 2019-04-18 10:55:01 -07:00
plain_table_index.cc Fix many bugs in log statement arguments (#5089) 2019-04-04 12:12:11 -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 Update all unique/shared_ptr instances to be qualified with namespace std (#4638) 2018-11-09 11:19:58 -08:00
plain_table_reader.cc Add copyright headers per FB open-source checkup tool. (#5199) 2019-04-18 10:55:01 -07:00
plain_table_reader.h Add copyright headers per FB open-source checkup tool. (#5199) 2019-04-18 10:55:01 -07:00
scoped_arena_iterator.h Change RocksDB License 2017-07-15 16:11:23 -07:00
sst_file_reader_test.cc Fix SstFileReader not able to open ingested file (#5097) 2019-03-26 10:25:18 -07:00
sst_file_reader.cc Fix SstFileReader not able to open ingested file (#5097) 2019-03-26 10:25:18 -07:00
sst_file_writer_collectors.h Fix SstFileReader not able to open ingested file (#5097) 2019-03-26 10:25:18 -07:00
sst_file_writer.cc Feature for sampling and reporting compressibility (#4842) 2019-03-18 12:15:34 -07:00
table_builder.h Periodic Compactions (#5166) 2019-04-10 19:31:18 -07:00
table_properties_internal.h Index value delta encoding (#3983) 2018-08-09 16:58:40 -07:00
table_properties.cc Periodic Compactions (#5166) 2019-04-10 19:31:18 -07:00
table_reader_bench.cc Feature for sampling and reporting compressibility (#4842) 2019-03-18 12:15:34 -07:00
table_reader.h Introduce a new MultiGet batching implementation (#5011) 2019-04-11 14:28:26 -07:00
table_test.cc Avoid per-key upper bound check in BlockBasedTableIterator (#5142) 2019-04-16 11:37:47 -07:00
two_level_iterator.cc Apply modernize-use-override (2nd iteration) 2019-02-14 14:41:36 -08:00
two_level_iterator.h Index value delta encoding (#3983) 2018-08-09 16:58:40 -07:00