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https://issues.apache.org/jira/browse/YARN-1493?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13852499#comment-13852499
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Vinod Kumar Vavilapalli commented on YARN-1493:
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Tx for working on this! This is a big improvement and a huge stride forward for
many more things to come.
Started looking at the patch. Tx also for restricting the changes. There's a
lot more we can do, more refactoring, moving more stuff into app vs appattempt,
more renames etc. But let's continue to keep those to follow up JIRAs for
helping reviews.
> Schedulers don't recognize apps separately from app-attempts
> ------------------------------------------------------------
>
> Key: YARN-1493
> URL: https://issues.apache.org/jira/browse/YARN-1493
> Project: Hadoop YARN
> Issue Type: Sub-task
> Reporter: Jian He
> Assignee: Jian He
> Attachments: YARN-1493.1.patch, YARN-1493.2.patch, YARN-1493.3.patch,
> YARN-1493.4.patch
>
>
> Today, scheduler is tied to attempt only.
> We need to separate app-level handling logic in scheduler. We can add new
> app-level events to the scheduler and separate the app-level logic out. This
> is good for work-preserving AM restart, RM restart, and also needed for
> differentiating app-level metrics and attempt-level metrics.
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