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https://issues.apache.org/jira/browse/YARN-5314?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15366349#comment-15366349
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Vinod Kumar Vavilapalli commented on YARN-5314:
-----------------------------------------------

Looked at the patch mainly from the exception POV and it looks good to me.

Can you do these trivial fixes though they aren't not tied to this patch
 - TimelineWebServices has unused imports
 - EntityCacheItem.fs, variable "Exception caught" in 
EntityGroupFSTimelineStore are never used

> ConcurrentModificationException in ATS v1.5 EntityGroupFSTimelineStore
> ----------------------------------------------------------------------
>
>                 Key: YARN-5314
>                 URL: https://issues.apache.org/jira/browse/YARN-5314
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: timelineserver
>    Affects Versions: 2.8.0, 2.9.0
>            Reporter: Karam Singh
>            Assignee: Li Lu
>         Attachments: YARN-5314-trunk.001.patch, YARN-5314-trunk.002.patch
>
>
> ConcurrentModificationException seen in ATS logs while getting Entities in 
> ATS log.



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