[jira] [Commented] (FLINK-33090) CheckpointsCleaner clean individual checkpoint states in parallel

["Hangxiang Yu (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-33090?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17765423#comment-17765423 ] 

Hangxiang Yu commented on FLINK-33090:
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Thanks for the proposal.

We also saw related problem in FLINK-26590 which I just linked.

Would you like to contribute your codes ?

> CheckpointsCleaner clean individual checkpoint states in parallel
> -----------------------------------------------------------------
>
>                 Key: FLINK-33090
>                 URL: https://issues.apache.org/jira/browse/FLINK-33090
>             Project: Flink
>          Issue Type: Improvement
>          Components: Runtime / Checkpointing
>    Affects Versions: 1.17.1
>            Reporter: Yi Zhang
>            Priority: Major
>
> Currently CheckpointsCleaner clean multiple checkpoints in parallel with JobManager's ioExecutor, however each checkpoint states is cleaned sequentially. With thousands of StateObjects to clean this can take long time on some checkpoint storage, if longer than the checkpoint interval this prevents new checkpointing.
> The proposal is to use the same ioExecutor to clean up each checkpoints states in parallel as well. From my local testing, with default settings for ioExecutor thread pool for xK state files this can reduce clean up time from 10 minutes to <1 minute. 



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