[jira] [Resolved] (SPARK-58932) TransformWithStateInPySparkStateServer leaks the accepted socket

["Jungtaek Lim (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-58932?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jungtaek Lim resolved SPARK-58932.
----------------------------------
    Fix Version/s: 4.3.0
       Resolution: Fixed

Issue resolved by pull request 58205
[https://github.com/apache/spark/pull/58205]

> TransformWithStateInPySparkStateServer leaks the accepted socket
> ----------------------------------------------------------------
>
>                 Key: SPARK-58932
>                 URL: https://issues.apache.org/jira/browse/SPARK-58932
>             Project: Spark
>          Issue Type: Bug
>          Components: Structured Streaming
>    Affects Versions: 4.0.0, 4.1.3
>            Reporter: Jiwon Park
>            Assignee: Jiwon Park
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 4.3.0
>
>
> TransformWithStateInPySparkStateServer.run() accepts a connection from the Python worker but never closes it. The task completion listener closes only the listening ServerSocketChannel.
> initStateServer() binds an ephemeral port per task, so every task leaks one socket. On a streaming query with a 10s trigger and 8 shuffle partitions this was measured at 45-51 CLOSE_WAIT sockets per minute, exhausting the ephemeral port range in about 10 hours. After that every new connection fails with BindException.



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