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https://issues.apache.org/jira/browse/HIVE-23446?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17105362#comment-17105362
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Rajesh Balamohan commented on HIVE-23446:
-----------------------------------------
RB link: https://reviews.apache.org/r/72499/diff/1#index_header
> LLAP: Reduce IPC connection misses to AM for short queries
> ----------------------------------------------------------
>
> Key: HIVE-23446
> URL: https://issues.apache.org/jira/browse/HIVE-23446
> Project: Hive
> Issue Type: Improvement
> Reporter: Rajesh Balamohan
> Assignee: Rajesh Balamohan
> Priority: Major
> Attachments: HIVE-23446.1.patch
>
>
> [https://github.com/apache/hive/blob/master/llap-server/src/java/org/apache/hadoop/hive/llap/daemon/impl/QueryInfo.java#L343]
>
> Umbilical UGI pool for is maintained at QueryInfo level. When there are lots
> of short queries, this ends up missing IPC cache and ends up recreating
> threads/connections to the same AM.
> It would be good to maintain this pool in {{ContainerRunnerImpl}} instead and
> recycle as needed.
>
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