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From "Nemon Lou (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-10781) HadoopJobExecHelper Leaks RunningJobs
Date Thu, 21 May 2015 09:36:00 GMT

    [ https://issues.apache.org/jira/browse/HIVE-10781?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14553972#comment-14553972
] 

Nemon Lou commented on HIVE-10781:
----------------------------------

Thanks for providing this patch. :)
I think this patch will help. And it will take time to proven it on the cluster.

> HadoopJobExecHelper Leaks RunningJobs
> -------------------------------------
>
>                 Key: HIVE-10781
>                 URL: https://issues.apache.org/jira/browse/HIVE-10781
>             Project: Hive
>          Issue Type: Bug
>          Components: Hive, HiveServer2
>    Affects Versions: 0.13.1, 1.2.0
>            Reporter: Nemon Lou
>         Attachments: HIVE-10781.patch
>
>
> On one of our busy hadoop cluster, hiveServer2 holds more than 4000 org.apache.hadoop.mapred.JobClient$NetworkedJob
instances,while only has less than 3 backgroud handler thread at the same time.
> All these instances are hold in one LinkedList from org.apache.hadoop.hive.ql.exec.mr.HadoopJobExecHelper's
 runningJobs property,which is static.



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