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https://issues.apache.org/jira/browse/HIVE-12250?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Naveen Gangam updated HIVE-12250:
---------------------------------
Attachment: HIVE-12250.2.patch
In-corporated comments from the review.
> Zookeeper connection leaks in Hive's HBaseHandler.
> --------------------------------------------------
>
> Key: HIVE-12250
> URL: https://issues.apache.org/jira/browse/HIVE-12250
> Project: Hive
> Issue Type: Bug
> Components: HiveServer2
> Affects Versions: 1.1.0
> Reporter: Naveen Gangam
> Assignee: Naveen Gangam
> Attachments: HIVE-12250.2.patch, HIVE-12250.patch
>
>
> HiveServer2 performance regresses severely due to what appears to be a leak
> in the ZooKeeper connections. lsof output on the HS2 process shows about 8000
> TCP connections to the ZK ensemble nodes.
> grep TCP lsof-hive-node11 | grep node11 | grep -E "node03|node04|node05" | wc
> -l
> 7866
> grep TCP lsof-hive-node11 | grep node11 | grep -E "node03" | wc -l
> 2615
> grep TCP lsof-hive-node11 | grep node11 | grep -E "node04" | wc -l
> 2622
> grep TCP lsof-hive-node11 | grep node11 | grep -E "node05" | wc -l
> 2629
> node11 - HMS node
> node03, node04 and node05 are the hosts for zookeeper ensemble.
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