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https://issues.apache.org/jira/browse/MAPREDUCE-6889?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16012149#comment-16012149
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Rohith Sharma K S commented on MAPREDUCE-6889:
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cc [~jlowe] would you please share your opinion this JIRA patch?
> FileSystem leak when Job#submit() used when ATS1.5 enabled
> ----------------------------------------------------------
>
> Key: MAPREDUCE-6889
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-6889
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Reporter: Rohith Sharma K S
> Assignee: Rohith Sharma K S
> Attachments: MAPREDUCE-6889.0001.patch
>
>
> ATS1.5 uses FileSystemTimelineWriter which creates FS object on every writer
> initialization. If writer is not closed, then there is possibility of OOM see
> YARN-5438 fixes closing FS object.
> TimelineClient is used by YarnClient. So all the user who uses YarnClient
> with ATS1.5 need to stop service properly. Otherwise there is big chance of
> FS object leak.
> Of course MR uses YARN client submit job. If MR do not stop YarnClient then
> there is FS object leak.
> JobClient provides a API to stop all these service using *JobClient#close*.
> But many MR clients uses *Job* object to submit a job. But do not stop
> started services by default. So, Job class should provide a API to close the
> services very similar to JobClient#close.
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