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Gang Liao 275cd80cdb Add a blob-specific cache priority (#10461) 
Summary:
RocksDB's `Cache` abstraction currently supports two priority levels for items: high (used for frequently accessed/highly valuable SST metablocks like index/filter blocks) and low (used for SST data blocks). Blobs are typically lower-value targets for caching than data blocks, since 1) with BlobDB, data blocks containing blob references conceptually form an index structure which has to be consulted before we can read the blob value, and 2) cached blobs represent only a single key-value, while cached data blocks generally contain multiple KVs. Since we would like to make it possible to use the same backing cache for the block cache and the blob cache, it would make sense to add a new, lower-than-low cache priority level (bottom level) for blobs so data blocks are prioritized over them.

This task is a part of https://github.com/facebook/rocksdb/issues/10156

Pull Request resolved: https://github.com/facebook/rocksdb/pull/10461

Reviewed By: siying

Differential Revision: D38672823

Pulled By: ltamasi

fbshipit-source-id: 90cf7362036563d79891f47be2cc24b827482743
 		2022-08-12 17:59:06 -07:00
..
blob_constants.h Move BlobDB related files under db/ to db/blob/ (#6519) 2020-03-12 11:00:56 -07:00
blob_counting_iterator.h Log the amount of blob garbage generated by compactions in the MANIFEST (#8450) 2021-06-24 16:11:56 -07:00
blob_counting_iterator_test.cc Cleanup multiple implementations of VectorIterator (#8901) 2021-10-06 07:48:31 -07:00
blob_fetcher.cc Support readahead during compaction for blob files (#9187) 2021-11-19 17:53:47 -08:00
blob_fetcher.h Support readahead during compaction for blob files (#9187) 2021-11-19 17:53:47 -08:00
blob_file_addition.cc Print blob file checksums as hex (#8437) 2021-06-22 09:49:44 -07:00
blob_file_addition.h Move BlobDB related files under db/ to db/blob/ (#6519) 2020-03-12 11:00:56 -07:00
blob_file_addition_test.cc Print blob file checksums as hex (#8437) 2021-06-22 09:49:44 -07:00
blob_file_builder.cc Add a blob-specific cache priority (#10461) 2022-08-12 17:59:06 -07:00
blob_file_builder.h Support prepopulating/warming the blob cache (#10298) 2022-07-17 07:13:59 -07:00
blob_file_builder_test.cc Support prepopulating/warming the blob cache (#10298) 2022-07-17 07:13:59 -07:00
blob_file_cache.cc Rename ImmutableOptions variables (#8409) 2021-06-16 16:51:38 -07:00
blob_file_cache.h Rename ImmutableOptions variables (#8409) 2021-06-16 16:51:38 -07:00
blob_file_cache_test.cc Have Cache use Status::MemoryLimit (#10262) 2022-07-06 14:41:46 -07:00
blob_file_completion_callback.h Fix LITE mode builds on MacOs (#8981) 2021-10-04 05:30:26 -07:00
blob_file_garbage.cc Move BlobDB related files under db/ to db/blob/ (#6519) 2020-03-12 11:00:56 -07:00
blob_file_garbage.h Move BlobDB related files under db/ to db/blob/ (#6519) 2020-03-12 11:00:56 -07:00
blob_file_garbage_test.cc Move BlobDB related files under db/ to db/blob/ (#6519) 2020-03-12 11:00:56 -07:00
blob_file_meta.cc Add BlobMetaData retrieval methods (#8273) 2021-06-28 08:13:29 -07:00
blob_file_meta.h Add BlobMetaData retrieval methods (#8273) 2021-06-28 08:13:29 -07:00
blob_file_reader.cc Fix build error due to uninitialized read_req (#10312) 2022-07-22 09:24:13 -07:00
blob_file_reader.h Enable blob caching for MultiGetBlob in RocksDB (#10272) 2022-06-30 13:24:35 -07:00
blob_file_reader_test.cc Enable blob caching for MultiGetBlob in RocksDB (#10272) 2022-06-30 13:24:35 -07:00
blob_garbage_meter.cc Add a class for measuring the amount of garbage generated during compaction (#8426) 2021-06-21 22:25:30 -07:00
blob_garbage_meter.h Add a class for measuring the amount of garbage generated during compaction (#8426) 2021-06-21 22:25:30 -07:00
blob_garbage_meter_test.cc Add a class for measuring the amount of garbage generated during compaction (#8426) 2021-06-21 22:25:30 -07:00
blob_index.h Remove local static string (#8103) 2022-08-05 23:03:51 -07:00
blob_log_format.cc Remove local static string (#8103) 2022-08-05 23:03:51 -07:00
blob_log_format.h Add a class for measuring the amount of garbage generated during compaction (#8426) 2021-06-21 22:25:30 -07:00
blob_log_sequential_reader.cc Add rate limiter priority to ReadOptions (#9424) 2022-02-16 23:18:14 -08:00
blob_log_sequential_reader.h Fix a issue with initializing blob header buffer (#8537) 2021-08-02 17:15:06 -07:00
blob_log_writer.cc WritableFileWriter tries to skip operations after failure (#10489) 2022-08-10 10:19:20 -07:00
blob_log_writer.h Use SystemClock* instead of std::shared_ptr<SystemClock> in lower level routines (#8033) 2021-03-15 04:34:11 -07:00
blob_read_request.h Enable blob caching for MultiGetBlob in RocksDB (#10272) 2022-06-30 13:24:35 -07:00
blob_source.cc Add a blob-specific cache priority (#10461) 2022-08-12 17:59:06 -07:00
blob_source.h Derive cache keys from SST unique IDs (#10394) 2022-08-12 13:49:49 -07:00
blob_source_test.cc Add a blob-specific cache priority (#10461) 2022-08-12 17:59:06 -07:00
db_blob_basic_test.cc Reset blob value as soon as it's not needed in DBIter (#10490) 2022-08-09 11:39:57 -07:00
db_blob_compaction_test.cc Fix wrong value passed in compaction filter in BlobDB (#10391) 2022-08-11 13:55:28 -07:00
db_blob_corruption_test.cc Enable a few unit tests to use custom Env objects (#9087) 2021-11-08 11:05:59 -08:00
db_blob_index_test.cc Remove own ToString() (#9955) 2022-05-06 13:03:58 -07:00
prefetch_buffer_collection.cc Support readahead during compaction for blob files (#9187) 2021-11-19 17:53:47 -08:00
prefetch_buffer_collection.h Support readahead during compaction for blob files (#9187) 2021-11-19 17:53:47 -08:00