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Posted to jira@kafka.apache.org by "David Jacot (Jira)" <ji...@apache.org> on 2026/10/02 14:01:00 UTC

[jira] [Resolved] (KAFKA-21196) Release memory held by CoordinatorExecutorImpl tasks when cancelled

     [ https://issues.apache.org/jira/browse/KAFKA-21196?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

David Jacot resolved KAFKA-21196.
---------------------------------
    Fix Version/s: 4.5.0
       Resolution: Fixed

> Release memory held by CoordinatorExecutorImpl tasks when cancelled
> -------------------------------------------------------------------
>
>                 Key: KAFKA-21196
>                 URL: https://issues.apache.org/jira/browse/KAFKA-21196
>             Project: Kafka
>          Issue Type: Improvement
>          Components: group-coordinator
>            Reporter: Sean Quah
>            Assignee: David Jacot
>            Priority: Major
>             Fix For: 4.5.0
>
>
> When CoordinatorExecutorImpl tasks are cancelled, they remain in the executor queue or the event processor queue. When the group coordinator is overloaded, these queues can grow large and retain data structures that are no longer needed.
> One way we can allow the memory to be reclaimed by GC is to box the callbacks held by tasks and release them on cancellation.



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