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https://issues.apache.org/jira/browse/SPARK-35713?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sean R. Owen resolved SPARK-35713.
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Resolution: Not A Problem
> Bug fix for thread leak in JobCancellationSuite
> -----------------------------------------------
>
> Key: SPARK-35713
> URL: https://issues.apache.org/jira/browse/SPARK-35713
> Project: Spark
> Issue Type: Improvement
> Components: Spark Core
> Affects Versions: 3.1.2
> Reporter: Wan Kun
> Priority: Minor
>
> When we call Thread.interrupt() method, that thread's interrupt status will
> be set but it may not really interrupt.
> So when spark task runs in an infinite loop, spark context may fail to
> interrupt the task thread, and resulting in thread leak.
>
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