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https://issues.apache.org/jira/browse/YARN-3051?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14610626#comment-14610626
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Varun Saxena commented on YARN-3051:
------------------------------------

Any reason metrics and events in TimelineEntity are stored in a set ? A map 
will make some operations easier and optimal in case of FS implementation

> [Storage abstraction] Create backing storage read interface for ATS readers
> ---------------------------------------------------------------------------
>
>                 Key: YARN-3051
>                 URL: https://issues.apache.org/jira/browse/YARN-3051
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: timelineserver
>    Affects Versions: YARN-2928
>            Reporter: Sangjin Lee
>            Assignee: Varun Saxena
>         Attachments: YARN-3051-YARN-2928.003.patch, 
> YARN-3051-YARN-2928.03.patch, YARN-3051-YARN-2928.04.patch, 
> YARN-3051-YARN-2928.05.patch, YARN-3051-YARN-2928.06.patch, 
> YARN-3051.Reader_API.patch, YARN-3051.Reader_API_1.patch, 
> YARN-3051.Reader_API_2.patch, YARN-3051.Reader_API_3.patch, 
> YARN-3051.Reader_API_4.patch, YARN-3051.wip.02.YARN-2928.patch, 
> YARN-3051.wip.patch, YARN-3051_temp.patch
>
>
> Per design in YARN-2928, create backing storage read interface that can be 
> implemented by multiple backing storage implementations.



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