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Posted to issues@spark.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2024/04/19 06:47:00 UTC

[jira] [Updated] (SPARK-47910) Memory leak when interrupting shuffle write using zstd compression

     [ https://issues.apache.org/jira/browse/SPARK-47910?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

ASF GitHub Bot updated SPARK-47910:
-----------------------------------
    Labels: pull-request-available  (was: )

> Memory leak when interrupting shuffle write using zstd compression
> ------------------------------------------------------------------
>
>                 Key: SPARK-47910
>                 URL: https://issues.apache.org/jira/browse/SPARK-47910
>             Project: Spark
>          Issue Type: Bug
>          Components: Spark Core
>    Affects Versions: 3.2.0, 3.3.0, 3.4.0, 3.5.0
>            Reporter: JacobZheng
>            Priority: Major
>              Labels: pull-request-available
>
> When spark.sql.execution.interruptOnCancel=true and spark.io.compression.codec=zstd, a memory leak was found when tasks were cancelled at specific times. The reason for this is that cancelling a task interrupts the shuffle write, which then calls org.apache.spark.storage.DiskBlockObjectWriter#closeResources. this process then only closes the ManualCloseOutputStream, which is wrapped with this ZstdInputStreamNoFinalizer will not be closed. Moreover, ZstdInputStreamNoFinalizer doesn't implement Finalizer so it won't be reclaimed by GC automatically. 
>  



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