Sangjin Lee commented on YARN-2928:


bq. In certain cases, it might be required to mine a specific job's data by 
exporting contents out of ATS. Would there be any support for an export tool to 
get data out of ATS?

Other than access to the REST endpoint, one might be able to query the backing 
storage directly. And we're keeping that in mind. But that would depend on the 
backing storage's capability. For example, for HBase, we could provide phoenix 
schema on which one can do offline queries pretty efficiently.

> 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
>            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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