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https://issues.apache.org/jira/browse/SPARK-24334?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16484130#comment-16484130
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Apache Spark commented on SPARK-24334:
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User 'icexelloss' has created a pull request for this issue:
https://github.com/apache/spark/pull/21397

> Race condition in ArrowPythonRunner causes unclean shutdown of Arrow memory 
> allocator
> -------------------------------------------------------------------------------------
>
>                 Key: SPARK-24334
>                 URL: https://issues.apache.org/jira/browse/SPARK-24334
>             Project: Spark
>          Issue Type: Sub-task
>          Components: PySpark
>    Affects Versions: 2.3.0
>            Reporter: Li Jin
>            Priority: Major
>
> Currently, ArrowPythonRunner has two thread that frees the Arrow vector 
> schema root and allocator - The main writer thread and task completion 
> listener thread. 
> Having both thread doing the clean up leads to weird case (e.g., negative ref 
> cnt, NPE, and memory leak exception) when an exceptions are thrown from the 
> user function.
>  



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