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91b7553293
rocksdb/table/block_based
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Cheng Chang 91b7553293 Enable IO Uring in MultiGet in direct IO mode (#6815) 
Summary:
Currently, in direct IO mode, `MultiGet` retrieves the data blocks one by one instead of in parallel, see `BlockBasedTable::RetrieveMultipleBlocks`.

Since direct IO is supported in `RandomAccessFileReader::MultiRead` in https://github.com/facebook/rocksdb/pull/6446, this PR applies `MultiRead` to `MultiGet` so that the data blocks can be retrieved in parallel.

Also, in direct IO mode and when data blocks are compressed and need to uncompressed, this PR only allocates one continuous aligned buffer to hold the data blocks, and then directly uncompress the blocks to insert into block cache, there is no longer intermediate copies to scratch buffers.
Pull Request resolved: https://github.com/facebook/rocksdb/pull/6815

Test Plan:
1. added a new unit test `BlockBasedTableReaderTest::MultiGet`.
2. existing unit tests and stress tests  contain tests against `MultiGet` in direct IO mode.

Reviewed By: anand1976

Differential Revision: D21426347

Pulled By: cheng-chang

fbshipit-source-id: b8446ae0e74152444ef9111e97f8e402ac31b24f
2020-05-14 23:26:26 -07:00
..
binary_search_index_reader.cc Divide block_based_table_reader.cc (#6527) 2020-03-12 21:41:50 -07:00
binary_search_index_reader.h Divide block_based_table_reader.cc (#6527) 2020-03-12 21:41:50 -07:00
block_based_filter_block_test.cc Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
block_based_filter_block.cc Silence false alarms in db_stress fault injection (#6741) 2020-04-24 13:06:12 -07:00
block_based_filter_block.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
block_based_table_builder.cc Add tests for compression failure in BlockBasedTableBuilder (#6709) 2020-05-12 09:27:35 -07:00
block_based_table_builder.h Disallow BlockBasedTableBuilder to set status from non-OK (#6776) 2020-04-30 15:37:03 -07:00
block_based_table_factory.cc sst_dump to reduce number of file reads (#6836) 2020-05-12 18:23:33 -07:00
block_based_table_factory.h sst_dump to reduce number of file reads (#6836) 2020-05-12 18:23:33 -07:00
block_based_table_iterator.cc Properly report IO errors when IndexType::kBinarySearchWithFirstKey is used (#6621) 2020-04-15 17:40:44 -07:00
block_based_table_iterator.h Properly report IO errors when IndexType::kBinarySearchWithFirstKey is used (#6621) 2020-04-15 17:40:44 -07:00
block_based_table_reader_impl.h Divide block_based_table_reader.cc (#6527) 2020-03-12 21:41:50 -07:00
block_based_table_reader_test.cc Enable IO Uring in MultiGet in direct IO mode (#6815) 2020-05-14 23:26:26 -07:00
block_based_table_reader.cc Enable IO Uring in MultiGet in direct IO mode (#6815) 2020-05-14 23:26:26 -07:00
block_based_table_reader.h sst_dump to reduce number of file reads (#6836) 2020-05-12 18:23:33 -07:00
block_builder.cc Add pipelined & parallel compression optimization (#6262) 2020-04-01 16:40:18 -07:00
block_builder.h Add pipelined & parallel compression optimization (#6262) 2020-04-01 16:40:18 -07:00
block_prefetcher.cc De-template block based table iterator (#6531) 2020-03-16 12:20:50 -07:00
block_prefetcher.h De-template block based table iterator (#6531) 2020-03-16 12:20:50 -07:00
block_prefix_index.cc Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
block_prefix_index.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
block_test.cc Fix range deletion tombstone ingestion with global seqno (#6429) 2020-02-25 15:31:48 -08:00
block_type.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
block.cc Fix some typos in code comments (#6733) 2020-04-23 12:28:49 -07:00
block.h fix comparison count for format_version=3 indexes (#6650) 2020-04-13 11:18:37 -07:00
cachable_entry.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
data_block_footer.cc Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
data_block_footer.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
data_block_hash_index_test.cc Fix range deletion tombstone ingestion with global seqno (#6429) 2020-02-25 15:31:48 -08:00
data_block_hash_index.cc Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
data_block_hash_index.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
filter_block_reader_common.cc Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
filter_block_reader_common.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
filter_block.h Fix iterator reading filter block despite read_tier == kBlockCacheTier (#6562) 2020-03-26 15:21:26 -07:00
filter_policy_internal.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
filter_policy.cc Add Functions to OptionTypeInfo (#6422) 2020-04-28 18:04:26 -07:00
flush_block_policy.cc Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
flush_block_policy.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
full_filter_block_test.cc Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
full_filter_block.cc Basic MultiGet support for partitioned filters (#6757) 2020-04-28 14:49:34 -07:00
full_filter_block.h Fix iterator reading filter block despite read_tier == kBlockCacheTier (#6562) 2020-03-26 15:21:26 -07:00
hash_index_reader.cc Divide block_based_table_reader.cc (#6527) 2020-03-12 21:41:50 -07:00
hash_index_reader.h Divide block_based_table_reader.cc (#6527) 2020-03-12 21:41:50 -07:00
index_builder.cc Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
index_builder.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
index_reader_common.cc Divide block_based_table_reader.cc (#6527) 2020-03-12 21:41:50 -07:00
index_reader_common.h Divide block_based_table_reader.cc (#6527) 2020-03-12 21:41:50 -07:00
mock_block_based_table.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
parsed_full_filter_block.cc Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
parsed_full_filter_block.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
partitioned_filter_block_test.cc Fix range deletion tombstone ingestion with global seqno (#6429) 2020-02-25 15:31:48 -08:00
partitioned_filter_block.cc Basic MultiGet support for partitioned filters (#6757) 2020-04-28 14:49:34 -07:00
partitioned_filter_block.h Basic MultiGet support for partitioned filters (#6757) 2020-04-28 14:49:34 -07:00
partitioned_index_iterator.cc Fix regression bug in partitioned index reseek caused by #6531 (#6551) 2020-03-17 12:33:10 -07:00
partitioned_index_iterator.h Fix compiler warning treated as error (#6547) 2020-03-17 09:59:28 -07:00
partitioned_index_reader.cc Silence false alarms in db_stress fault injection (#6741) 2020-04-24 13:06:12 -07:00
partitioned_index_reader.h Divide block_based_table_reader.cc (#6527) 2020-03-12 21:41:50 -07:00
reader_common.cc Divide block_based_table_reader.cc (#6527) 2020-03-12 21:41:50 -07:00
reader_common.h Divide block_based_table_reader.cc (#6527) 2020-03-12 21:41:50 -07:00
uncompression_dict_reader.cc Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
uncompression_dict_reader.h Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00