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https://issues.apache.org/jira/browse/SPARK-27812?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17304457#comment-17304457
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Dongjoon Hyun commented on SPARK-27812:
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Thank you for reporting, [~Kotlov].
1. Could you file a new JIRA because it might be related to K8s client version?
2. BTW, `sparkContext.stop()` or `spark.stop()` should be called by App. I
don't think your use case is a legit Spark example although it might be a
behavior change across Spark versions.
> kubernetes client import non-daemon thread which block jvm exit.
> ----------------------------------------------------------------
>
> Key: SPARK-27812
> URL: https://issues.apache.org/jira/browse/SPARK-27812
> Project: Spark
> Issue Type: Bug
> Components: Kubernetes, Spark Core
> Affects Versions: 2.4.3, 2.4.4
> Reporter: Henry Yu
> Assignee: Igor Calabria
> Priority: Major
> Fix For: 2.4.5, 3.0.0
>
>
> I try spark-submit to k8s with cluster mode. Driver pod failed to exit with
> An Okhttp Websocket Non-Daemon Thread.
>
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