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https://issues.apache.org/jira/browse/HIVE-15958?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15883647#comment-15883647
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Siddharth Seth commented on HIVE-15958:
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The stopUmbilical in hasAmFaield() - is this required? Think this has the
potential to cause an NPE if there's a taskKilled already queued up.
In QueryTracker - instead of introducing a new map to store the NodeId - the
NodeId can be stored in QueryInfo.
Otherwise, looks good.
> LLAP: IPC connections are not being reused for umbilical protocol
> -----------------------------------------------------------------
>
> Key: HIVE-15958
> URL: https://issues.apache.org/jira/browse/HIVE-15958
> Project: Hive
> Issue Type: Bug
> Components: llap
> Affects Versions: 2.2.0
> Reporter: Rajesh Balamohan
> Assignee: Prasanth Jayachandran
> Attachments: HIVE-15958.1.patch, HIVE-15958.2.patch,
> HIVE-15958.3.patch, HIVE-15958.4.patch, HIVE-15958.4.patch
>
>
> During concurrency testing, observed 1000s of ipc thread creations. Ideally,
> the connections to same hosts should be reused.
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