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Posted to yarn-issues@hadoop.apache.org by "Jakob Stengård (JIRA)" <ji...@apache.org> on 2016/03/02 16:34:18 UTC

[jira] [Commented] (YARN-4680) TimerTasks leak in ATS V1.5 Writer

    [ 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:
--------------------------------------

Hi.
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, YARN-4680.20160222.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 as
> 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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