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Posted to dev@hive.apache.org by "Naveen Gangam (JIRA)" <ji...@apache.org> on 2015/10/23 23:31:27 UTC

[jira] [Created] (HIVE-12250) Zookeeper connection leaks in Hive's HBaseHandler.

Naveen Gangam created HIVE-12250:
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             Summary: 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


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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