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cd79a00903
rocksdb/table
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Akanksha Mahajan cd79a00903 Make BlockBasedTable::kMaxAutoReadAheadSize configurable (#7951) 
Summary:
RocksDB does auto-readahead for iterators on noticing more
than two reads for a table file. The readahead starts at 8KB and doubles on every
additional read upto BlockBasedTable::kMaxAutoReadAheadSize which is
256*1024.
This PR adds a new option BlockBasedTableOptions::max_auto_readahead_size which
replaces BlockBasedTable::kMaxAutoReadAheadSize and the new option can be
configured.
If max_auto_readahead_size is set 0 then no implicit auto prefetching will
be done. If max_auto_readahead_size provided is less than
8KB (which is initial readahead size used by rocksdb in case of
auto-readahead), readahead size will remain same as max_auto_readahead_size.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/7951

Test Plan: Add new unit test case.

Reviewed By: anand1976

Differential Revision: D26568085

Pulled By: akankshamahajan15

fbshipit-source-id: b6543520fc74e97d859f2002328d4c5254d417af
2021-02-23 16:54:08 -08:00
..
adaptive Bring the Configurable options together (#5753) 2020-09-14 17:01:01 -07:00
block_based Make BlockBasedTable::kMaxAutoReadAheadSize configurable (#7951) 2021-02-23 16:54:08 -08:00
cuckoo Remove Legacy and Custom FileWrapper classes from header files (#7851) 2021-01-28 22:10:32 -08:00
plain Create a Customizable class to load classes and configurations (#6590) 2020-11-11 15:10:41 -08:00
block_fetcher_test.cc Fix testcase failures on windows (#7992) 2021-02-23 14:35:06 -08:00
block_fetcher.cc Add a SystemClock class to capture the time functions of an Env (#7858) 2021-01-25 22:09:11 -08:00
block_fetcher.h Reduce memory copies when fetching and uncompressing blocks from SST files (#6689) 2020-04-24 15:32:56 -07:00
cleanable_test.cc Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
format.cc Add a SystemClock class to capture the time functions of an Env (#7858) 2021-01-25 22:09:11 -08:00
format.h Add a host location property to TableProperties (#7479) 2020-10-19 11:38:48 -07:00
get_context.cc Add a SystemClock class to capture the time functions of an Env (#7858) 2021-01-25 22:09:11 -08:00
get_context.h Add a SystemClock class to capture the time functions of an Env (#7858) 2021-01-25 22:09:11 -08:00
internal_iterator.h Clean up InternalIterator upper bound logic a little bit (#7200) 2020-08-05 10:44:57 -07:00
iter_heap.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
iterator_wrapper.h Redesign block cache pinning API (#7520) 2020-10-11 14:58:24 -07:00
iterator.cc Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
merger_test.cc More Makefile Cleanup (#7097) 2020-07-09 14:35:17 -07:00
merging_iterator.cc Add some simulator cache and block tracer tests to ASSERT_STATUS_CHECKED (#7305) 2020-08-24 16:43:31 -07:00
merging_iterator.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
meta_blocks.cc Add a host location property to TableProperties (#7479) 2020-10-19 11:38:48 -07:00
meta_blocks.h Extend Get/MultiGet deadline support to table open (#6982) 2020-06-29 14:53:17 -07:00
mock_table.cc Remove Legacy and Custom FileWrapper classes from header files (#7851) 2021-01-28 22:10:32 -08:00
mock_table.h No elide constructors (#7798) 2020-12-23 16:55:53 -08:00
multiget_context.h Add initial blob support to batched MultiGet (#7766) 2020-12-14 13:48:22 -08:00
persistent_cache_helper.cc Add more tests to ASSERT_STATUS_CHECKED (#7367) 2020-09-16 15:48:07 -07:00
persistent_cache_helper.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
persistent_cache_options.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
scoped_arena_iterator.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
sst_file_dumper.cc Limit buffering for collecting samples for compression dictionary (#7970) 2021-02-19 14:09:54 -08:00
sst_file_dumper.h Limit buffering for collecting samples for compression dictionary (#7970) 2021-02-19 14:09:54 -08:00
sst_file_reader_test.cc Add a host location property to TableProperties (#7479) 2020-10-19 11:38:48 -07:00
sst_file_reader.cc Remove Legacy and Custom FileWrapper classes from header files (#7851) 2021-01-28 22:10:32 -08:00
sst_file_writer_collectors.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
sst_file_writer.cc Handoff checksum Implementation (#7523) 2021-02-10 22:20:32 -08:00
table_builder.h Store DB identity and DB session ID in SST files (#6983) 2020-06-17 10:57:40 -07:00
table_factory.cc Create a Customizable class to load classes and configurations (#6590) 2020-11-11 15:10:41 -08:00
table_properties_internal.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
table_properties.cc aggregated-table-properties with GetMapProperty (#7779) 2020-12-19 08:00:14 -08:00
table_reader_bench.cc Remove Legacy and Custom FileWrapper classes from header files (#7851) 2021-01-28 22:10:32 -08:00
table_reader_caller.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
table_reader.h dedup ReadOptions in iterator hierarchy (#7210) 2020-08-03 15:23:04 -07:00
table_test.cc Integrity protection for live updates to WriteBatch (#7748) 2021-01-29 12:18:58 -08:00
two_level_iterator.cc Redesign block cache pinning API (#7520) 2020-10-11 14:58:24 -07:00
two_level_iterator.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00