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https://issues.apache.org/jira/browse/YARN-2928?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14277888#comment-14277888
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Robert Kanter commented on YARN-2928:
-------------------------------------

For the aggregated log service, I'm guessing we're talking about the viewer 
only and not the aggregator service itself (which runs in the NodeManagers)?  
The viewer is just one of those HTML Block Java files.  Anyway, I agree that 
the Timeline Service reader should service log files; we can reuse that code.

On a related note, the JHS currently has a service that deletes aggregated log 
files after some amount of time.  If we eventually get rid of the JHS, we'll 
have to move this somewhere else.

> Application Timeline Server (ATS) next gen: phase 1
> ---------------------------------------------------
>
>                 Key: YARN-2928
>                 URL: https://issues.apache.org/jira/browse/YARN-2928
>             Project: Hadoop YARN
>          Issue Type: New Feature
>          Components: timelineserver
>            Reporter: Sangjin Lee
>            Assignee: Vinod Kumar Vavilapalli
>            Priority: Critical
>         Attachments: ATSv2.rev1.pdf, ATSv2.rev2.pdf
>
>
> We have the application timeline server implemented in yarn per YARN-1530 and 
> YARN-321. Although it is a great feature, we have recognized several critical 
> issues and features that need to be addressed.
> This JIRA proposes the design and implementation changes to address those. 
> This is phase 1 of this effort.



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