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Posted to dev@flink.apache.org by "Yun Tang (Jira)" <ji...@apache.org> on 2022/12/20 04:05:00 UTC

[jira] [Created] (FLINK-30457) Introduce period compaction to FRocksDB

Yun Tang created FLINK-30457:
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             Summary: Introduce period compaction to FRocksDB
                 Key: FLINK-30457
                 URL: https://issues.apache.org/jira/browse/FLINK-30457
             Project: Flink
          Issue Type: Improvement
          Components: Runtime / State Backends
            Reporter: Yun Tang
            Assignee: Yun Tang
             Fix For: 1.17.0


RocksDB supports period compaction once compaction filter is enabled (see https://github.com/facebook/rocksdb/wiki/Leveled-Compaction#periodic-compaction), which is really useful for Flink TTL feature to pick really old files in compaction.

Current FRocksDB base version: 6.20.3 has included the necessary code on the C++ side: https://github.com/facebook/rocksdb/pull/5166 and https://github.com/facebook/rocksdb/pull/5184. We just need to cherry pick the https://github.com/facebook/rocksdb/pull/8579 on the java side to support it in Flink.



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