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Posted to issues@flink.apache.org by GitBox <gi...@apache.org> on 2022/11/28 04:41:47 UTC

[GitHub] [flink] rovboyko opened a new pull request, #21406: [FLINK-30088][runtime] Fix excessive state updates for TtlMapState and TtlListState

rovboyko opened a new pull request, #21406:
URL: https://github.com/apache/flink/pull/21406

   …d TtlListState
   
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   ## What is the purpose of the change
   Avoid unnecessary state updates for TtlMapState and TtlListState in case they are not changed. This affects only HashMapStateBackend, MemoryStateBackend and FsStateBackend.
   
   
   
   ## Brief change log
   
   - add if condition to return original List if no records were expired for TtlListState
   - add if condition to return original Map if no records were expired for TtlMapState
   
   
   ## Verifying this change
   
   This change added tests and can be verified as follows:
   - add testStateNotChangedWithoutCleanup to TtlStateTestBase
   
   ## Does this pull request potentially affect one of the following parts:
   
     - Dependencies (does it add or upgrade a dependency): no
     - The public API, i.e., is any changed class annotated with `@Public(Evolving)`: no
     - The serializers: no
     - The runtime per-record code paths (performance sensitive): yes
     - Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Kubernetes/Yarn, ZooKeeper: no
     - The S3 file system connector: no
   
   ## Documentation
   
     - Does this pull request introduce a new feature? no
   


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Re: [PR] [FLINK-30088][runtime] Fix excessive state updates for TtlMapState and TtlListState [flink]

Posted by "rovboyko (via GitHub)" <gi...@apache.org>.

rovboyko commented on PR #21406:
URL: https://github.com/apache/flink/pull/21406#issuecomment-2016552579

   I updated the PR and published the benchmark results.
   @azagrebin  , @Myasuka  , @Jiayi-Liao  , could you please help with code review again?


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