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https://issues.apache.org/jira/browse/FLINK-37317?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jufang He updated FLINK-37317:
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Attachment: (was: image-2025-02-13-17-26-04-449.png)
> Checkpoint asyncOperationsThreadPool has only one thread running
> ----------------------------------------------------------------
>
> Key: FLINK-37317
> URL: https://issues.apache.org/jira/browse/FLINK-37317
> Project: Flink
> Issue Type: Bug
> Components: Runtime / Checkpointing
> Affects Versions: 1.20.1
> Reporter: Jufang He
> Priority: Major
> Attachments: image-2025-02-13-17-23-11-788.png,
> image-2025-02-13-17-25-47-904.png, image-2025-02-13-17-41-27-027.png
>
>
> org.apache.flink.streaming.runtime.tasks.StreamTask#AsyncOperationsThreadPool
> configuration looks unreasonable, cause in fact will only have one thread to
> run. The concurrent checkpoints asyncCheckpointRunnable execution and close
> can only run serially. The thread pool configuration is as follows:
> !image-2025-02-13-17-23-11-788.png|width=600!
> I simulated the execution of the thread pool locally, and the results were as
> follows:
> !image-2025-02-13-17-25-47-904.png|width=600!
> !image-2025-02-13-17-41-27-027.png|width=600!
> I think there are the following ways to solve this problem:
> 1、Increases the corePoolSize, but increases CPU consumption.
> 2、Use CachedThreadPool which uses SynchronousQueue as the workQueue, and the
> tasks execute immediately. But too many tasks can take up too many resources.
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