Robert Kanter commented on YARN-2928:

To mirror my comment from the doc that Sangjin is referring to; I had said:
{quote}It would be useful to be able to aggregate to queues; what would be a 
good way to fit those into the data model?{quote}
in the "Some issues to address" section.

As discussed, if we only do child --> parent aggregation ("primary 
aggregation"), then we can't aggregate to queues because they don't really fit 
in that path.  

> 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, Data model proposal 
> v1.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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