[jira] [Resolved] (SPARK-25265) Fix memory leak vulnerability in Barrier Execution Mode

["Kousuke Saruta (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-25265?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kousuke Saruta resolved SPARK-25265.
------------------------------------
    Resolution: Duplicate

Thanks for the notification. It may be accidentally duplicated. I'll close this one.

> Fix memory leak vulnerability in Barrier Execution Mode
> -------------------------------------------------------
>
>                 Key: SPARK-25265
>                 URL: https://issues.apache.org/jira/browse/SPARK-25265
>             Project: Spark
>          Issue Type: Bug
>          Components: Scheduler, Spark Core
>    Affects Versions: 2.4.0
>            Reporter: Kousuke Saruta
>            Assignee: Kousuke Saruta
>            Priority: Critical
>
> BarrierCoordinator$ uses Timer and TimerTask. `TimerTask#cancel()` is invoked in ContextBarrierState#cancelTimerTask but `Timer#purge()` is never invoked.
> Once a TimerTask is scheduled, the reference to it is not released until `Timer#purge()` is invoked even though `TimerTask#cancel()` is invoked.
>  



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