[jira] [Assigned] (SPARK-27666) Stop python runner threads when task finishes

["Apache Spark (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SPARK-27666?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Apache Spark reassigned SPARK-27666:
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    Assignee:     (was: Apache Spark)

> Stop python runner threads when task finishes
> ---------------------------------------------
>
>                 Key: SPARK-27666
>                 URL: https://issues.apache.org/jira/browse/SPARK-27666
>             Project: Spark
>          Issue Type: Improvement
>          Components: SQL
>    Affects Versions: 3.0.0
>            Reporter: Wenchen Fan
>            Priority: Major
>
> When a task finishes, we should stop the threads that are spawned by the Python runner immediately.
> https://github.com/apache/spark/pull/24542 fixed the problem that, if the Python runner thread releases the block lock at the end, and the block lock is already released when task finishes, we will hit assertion error.
> If we can stop the python runner thread when task finishes, we don't need https://github.com/apache/spark/pull/24542 any more.



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