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https://issues.apache.org/jira/browse/HIVE-10143?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14387276#comment-14387276
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Xuefu Zhang commented on HIVE-10143:
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+1 pending on tests.
> HS2 fails to clean up Spark client state on timeout [Spark Branch]
> ------------------------------------------------------------------
>
> Key: HIVE-10143
> URL: https://issues.apache.org/jira/browse/HIVE-10143
> Project: Hive
> Issue Type: Bug
> Components: Spark
> Affects Versions: spark-branch
> Reporter: Marcelo Vanzin
> Assignee: Marcelo Vanzin
> Attachments: HIVE-10143.1-spark.patch
>
>
> When a new client is registered with the Spark client and fails to connect
> back in time, the code will time out the future and HS2 will give up on that
> client. But the RSC backend does not clean up all the state, and the client
> is still allowed to connect back. That can lead to the client staying alive
> indefinitely and holding on to cluster resources, since HS2 doesn't know it's
> alive but the connection still exists.
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