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From Jakob Stengård (JIRA) <j...@apache.org>
Subject [jira] [Commented] (YARN-4680) TimerTasks leak in ATS V1.5 Writer
Date Wed, 02 Mar 2016 15:34:18 GMT

    [ https://issues.apache.org/jira/browse/YARN-4680?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15175792#comment-15175792

Jakob Stengård commented on YARN-4680:

What are the symptoms of this issue?

Im having a problem with hiveserver2, which is creating a lot of timer tasks named 
"LogFDsCachecleanInActiveFDsTimer" and "LogFDsCacheFlushTimer".

Eventually, hiveserver2 crashes. Could this be related to this bug?

> TimerTasks leak in ATS V1.5 Writer
> ----------------------------------
>                 Key: YARN-4680
>                 URL: https://issues.apache.org/jira/browse/YARN-4680
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: timelineserver
>            Reporter: Xuan Gong
>            Assignee: Xuan Gong
>             Fix For: 2.8.0
>         Attachments: YARN-4680.1.patch, YARN-4680.20160108.patch, YARN-4680.20160109.patch,
> We have seen TimerTasks leak which could cause application server done (such as oozie
server done due to too many active threads)
> Although we have fixed some potentially leak situations in upper application level, such
> https://issues.apache.org/jira/browse/MAPREDUCE-6618
> https://issues.apache.org/jira/browse/MAPREDUCE-6621, we still can not guarantee that
we fixed the issue.

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