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From "Craig Welch (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-3463) Integrate OrderingPolicy Framework with CapacityScheduler
Date Tue, 14 Apr 2015 21:09:59 GMT

    [ https://issues.apache.org/jira/browse/YARN-3463?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14494892#comment-14494892

Craig Welch commented on YARN-3463:

bq. 1) Preemption policy changes seems not correct to me...
So, I believe the behavior for FIFO should be exactly as it was before - and all of the preemption
tests were passing with the combined patch, so I think this is the case.  Fairness preemption
would be handled on [YARN-3319].  I don't mind moving the final integration for preemption
into another jira, but I don't believe the concern is correct / there is any behavioral change
for FIFO.

bq. 2) WebUI, REST API and CLI changes are public APIs and related to core changes in CS...

There are no REST API or CLI changes in the patch anymore, we agreed on [YARN-3318] https://issues.apache.org/jira/browse/YARN-3318?focusedCommentId=14393347&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-14393347
that the WebUI changes should stay with the initial integration - it's very important/needed
to be able to confirm that configuration was accomplished properly, without it there is no
way to tell what policy is active.

bq. So I suggest only leave core changes for CS including configuration 

So, I think given the WebUI bit above, this is already the case, with the possible exception
of preemption which, again, I think has not seen any behavior change for FIFO, which is all
we have at this time.

> Integrate OrderingPolicy Framework with CapacityScheduler
> ---------------------------------------------------------
>                 Key: YARN-3463
>                 URL: https://issues.apache.org/jira/browse/YARN-3463
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: capacityscheduler
>            Reporter: Craig Welch
>            Assignee: Craig Welch
>         Attachments: YARN-3463.50.patch, YARN-3643.58.patch
> Integrate the OrderingPolicy Framework with the CapacityScheduler

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