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Levi Tamasi dc5de45af8 Support readahead during compaction for blob files (#9187) 
Summary:
The patch adds a new BlobDB configuration option `blob_compaction_readahead_size`
that can be used to enable prefetching data from blob files during compaction.
This is important when using storage with higher latencies like HDDs or remote filesystems.
If enabled, prefetching is used for all cases when blobs are read during compaction,
namely garbage collection, compaction filters (when the existing value has to be read from
a blob file), and `Merge` (when the value of the base `Put` is stored in a blob file).

Pull Request resolved: https://github.com/facebook/rocksdb/pull/9187

Test Plan: Ran `make check` and the stress/crash test.

Reviewed By: riversand963

Differential Revision: D32565512

Pulled By: ltamasi

fbshipit-source-id: 87be9cebc3aa01cc227bec6b5f64d827b8164f5d
2021-11-19 17:53:47 -08:00
..
advisor Update branch as "main" in tools/advisor/README.md (#8744) 2021-09-01 20:26:28 -07:00
block_cache_analyzer Cleanup includes in dbformat.h (#8930) 2021-09-29 04:04:40 -07:00
dump Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
rdb Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
analyze_txn_stress_test.sh Add copyright headers per FB open-source checkup tool. (#5199) 2019-04-18 10:55:01 -07:00
auto_sanity_test.sh Add copyright headers per FB open-source checkup tool. (#5199) 2019-04-18 10:55:01 -07:00
backup_db.sh Revamp check_format_compatible.sh (#8012) 2021-03-02 11:42:27 -08:00
benchmark.sh Add a benchmarking wrapper script for BlobDB (#9015) 2021-10-12 11:36:03 -07:00
benchmark_leveldb.sh Add copyright headers per FB open-source checkup tool. (#5199) 2019-04-18 10:55:01 -07:00
blob_dump.cc Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
check_all_python.py Allow missing "unversioned" python, as in CentOS 8 (#6883) 2020-05-29 11:29:23 -07:00
check_format_compatible.sh Add 6.24 to the format compatibility checker (#8716) 2021-08-26 16:35:58 -07:00
CMakeLists.txt Mark dependencies as PRIVATE and fix missing dependencies in tools. (#6790) 2020-05-12 21:07:55 -07:00
db_bench.cc Add (& fix) some simple source code checks (#8821) 2021-09-07 21:19:27 -07:00
db_bench_tool.cc Support readahead during compaction for blob files (#9187) 2021-11-19 17:53:47 -08:00
db_bench_tool_test.cc Support readahead during compaction for blob files (#9187) 2021-11-19 17:53:47 -08:00
db_crashtest.py Support readahead during compaction for blob files (#9187) 2021-11-19 17:53:47 -08:00
db_repl_stress.cc Migrate away from Travis+Linux+amd64 (#7791) 2020-12-22 00:20:57 -08:00
db_sanity_test.cc Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
dbench_monitor Fix /bin/bash shebangs 2017-08-03 15:56:46 -07:00
Dockerfile adding docker build script and dockerfile 2015-05-22 16:03:39 -07:00
generate_random_db.sh Add copyright headers per FB open-source checkup tool. (#5199) 2019-04-18 10:55:01 -07:00
ingest_external_sst.sh Add copyright headers per FB open-source checkup tool. (#5199) 2019-04-18 10:55:01 -07:00
io_tracer_parser.cc Add IO Tracer Parser (#7333) 2020-09-23 15:50:26 -07:00
io_tracer_parser_test.cc Cleanup includes in dbformat.h (#8930) 2021-09-29 04:04:40 -07:00
io_tracer_parser_tool.cc Add request_id in IODebugContext. (#8045) 2021-04-01 13:14:51 -07:00
io_tracer_parser_tool.h Add IO Tracer Parser (#7333) 2020-09-23 15:50:26 -07:00
ldb.cc Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
ldb_cmd.cc List blob files when using command - list_live_files_metadata (#8976) 2021-09-30 15:13:11 -07:00
ldb_cmd_impl.h Some fixes and enhancements to ldb repair (#8544) 2021-07-28 16:44:14 -07:00
ldb_cmd_test.cc Enable a few unit tests to use custom Env objects (#9087) 2021-11-08 11:05:59 -08:00
ldb_test.py Add list live files metadata (#8446) 2021-06-22 19:07:46 -07:00
ldb_tool.cc Add list live files metadata (#8446) 2021-06-22 19:07:46 -07:00
pflag Fix /bin/bash shebangs 2017-08-03 15:56:46 -07:00
reduce_levels_test.cc Remove some unneeded code (#8736) 2021-09-01 14:28:58 -07:00
regression_test.sh Fix COMMIT_ID in regression_test.sh (#9047) 2021-10-18 11:01:06 -07:00
restore_db.sh Revamp check_format_compatible.sh (#8012) 2021-03-02 11:42:27 -08:00
rocksdb_dump_test.sh Add copyright headers per FB open-source checkup tool. (#5199) 2019-04-18 10:55:01 -07:00
run_blob_bench.sh Add a benchmarking wrapper script for BlobDB (#9015) 2021-10-12 11:36:03 -07:00
run_flash_bench.sh Add copyright headers per FB open-source checkup tool. (#5199) 2019-04-18 10:55:01 -07:00
run_leveldb.sh Add copyright headers per FB open-source checkup tool. (#5199) 2019-04-18 10:55:01 -07:00
sample-dump.dmp First version of rocksdb_dump and rocksdb_undump. 2015-06-19 16:24:36 -07:00
simulated_hybrid_file_system.cc Change the File System File Wrappers to std::unique_ptr (#8618) 2021-09-13 08:46:19 -07:00
simulated_hybrid_file_system.h Change the File System File Wrappers to std::unique_ptr (#8618) 2021-09-13 08:46:19 -07:00
sst_dump.cc Implement a new subcommand "identify" for sst_dump (#6943) 2020-06-08 13:58:28 -07:00
sst_dump_test.cc Enable a few unit tests to use custom Env objects (#9087) 2021-11-08 11:05:59 -08:00
sst_dump_tool.cc Add CreateFrom methods to Env/FileSystem (#8174) 2021-06-15 03:43:48 -07:00
trace_analyzer.cc Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433) 2020-02-20 12:09:57 -08:00
trace_analyzer_test.cc Fix the analyzer test failure caused by inaccurate timing wait (#9181) 2021-11-18 11:28:38 -08:00
trace_analyzer_tool.cc Simplify TraceAnalyzer (#8697) 2021-08-24 18:18:36 -07:00
trace_analyzer_tool.h Simplify TraceAnalyzer (#8697) 2021-08-24 18:18:36 -07:00
verify_random_db.sh Add copyright headers per FB open-source checkup tool. (#5199) 2019-04-18 10:55:01 -07:00
write_external_sst.sh Revamp check_format_compatible.sh (#8012) 2021-03-02 11:42:27 -08:00
write_stress.cc Add a SystemClock class to capture the time functions of an Env (#7858) 2021-01-25 22:09:11 -08:00
write_stress_runner.py Allow missing "unversioned" python, as in CentOS 8 (#6883) 2020-05-29 11:29:23 -07:00