dolysis/rocksdb
3
0
Fork 0
mirror of https://github.com/facebook/rocksdb.git synced 2024-11-26 07:30:54 +00:00
Code Issues Packages Projects Releases Wiki Activity
rocksdb/java
History
Changyu Bi bc04ec85db Make option level_compaction_dynamic_level_bytes true by default (#11525) 
Summary:
after https://github.com/facebook/rocksdb/issues/11321 and https://github.com/facebook/rocksdb/issues/11340 (both included in RocksDB v8.2), migration from `level_compaction_dynamic_level_bytes=false` to `level_compaction_dynamic_level_bytes=true` is automatic by RocksDB and requires no manual compaction from user. Making the option true by default as it has several advantages: 1. better space amplification guarantee (a more stable LSM shape). 2. compaction is more adaptive to write traffic. 3. automatic draining of unneeded levels. Wiki is updated with more detail: https://github.com/facebook/rocksdb/wiki/Leveled-Compaction#option-level_compaction_dynamic_level_bytes-and-levels-target-size.

The PR mostly contains fixes for unit tests as they assumed `level_compaction_dynamic_level_bytes=false`. Most notable change is commit f742be330c and b1928e42b3 which override the default option in DBTestBase to still set `level_compaction_dynamic_level_bytes=false` by default. This helps to reduce the change needed for unit tests. I think this default option override in unit tests is okay since the behavior of `level_compaction_dynamic_level_bytes=true` is tested by explicitly setting this option. Also, `level_compaction_dynamic_level_bytes=false` may be more desired in unit tests as it makes it easier to create a desired LSM shape.

Comment for option `level_compaction_dynamic_level_bytes` is updated to reflect this change and change made in https://github.com/facebook/rocksdb/issues/10057.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/11525

Test Plan: `make -j32 J=32 check` several times to try to catch flaky tests due to this option change.

Reviewed By: ajkr

Differential Revision: D46654256

Pulled By: cbi42

fbshipit-source-id: 6b5827dae124f6f1fdc8cca2ac6f6fcd878830e1
2023-06-15 21:12:39 -07:00
..
benchmark/src/main/java/org/rocksdb/benchmark jni: expose memtable_whole_key_filtering option (#9394) 2022-02-04 16:01:16 -08:00
crossbuild Support C++17 Docker build environments for RocksJava (#9500) 2022-02-17 12:48:38 -08:00
jmh Improve Java API get() performance by reducing copies (#10970) 2022-12-21 11:54:24 -08:00
rocksjni Implement missing compactrangeoptions from Java API (#10880) 2023-05-24 11:04:46 -07:00
samples/src/main/java Remove compressed block cache (#11117) 2023-01-24 17:09:19 -08:00
src Make option level_compaction_dynamic_level_bytes true by default (#11525) 2023-06-15 21:12:39 -07:00
CMakeLists.txt Set -source 8 in CMAKE_JAVA_COMPILE_FLAGS (#11385) 2023-04-18 11:15:25 -07:00
GetBenchmarks.md Improve Java API get() performance by reducing copies (#10970) 2022-12-21 11:54:24 -08:00
HISTORY-JAVA.md Update JAVA-HISTORY.md for v3.13 2015-08-04 18:12:58 -07:00
jdb_bench.sh Add copyright headers per FB open-source checkup tool. (#5199) 2019-04-18 10:55:01 -07:00
Makefile Fix Java API ComparatorOptions use after delete error (#11176) 2023-02-17 13:03:41 -08:00
pom.xml.template Improve Java API get() performance by reducing copies (#10970) 2022-12-21 11:54:24 -08:00
RELEASE.md Add shared library for musl-libc (#3143) 2019-11-26 18:24:09 -08:00
understanding_options.md New-style blob option bindings, Java option getter and improve/fix option parsing (#8999) 2021-10-19 09:21:52 -07:00