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From "Weiwei Yang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-7457) Delay scheduling should be an individual policy instead of part of scheduler implementation
Date Thu, 14 Dec 2017 12:03:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-7457?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16290752#comment-16290752
] 

Weiwei Yang commented on YARN-7457:
-----------------------------------

Hi [~Tao Yang]

Thanks for working on this.
I agree with [~leftnoteasy]'s point that it should be fairly enough to assume one delay policy
per app. But I don't think {{ApplicationSubmissionContext#getAMContainerSpec#environments}}
is a good place to add such info, it looks a bit weird to specify a delay scheduling policy
in container's launch context. Maybe we can extend {{RegisterApplicationMasterRequest}}?

Thanks

> Delay scheduling should be an individual policy instead of part of scheduler implementation
> -------------------------------------------------------------------------------------------
>
>                 Key: YARN-7457
>                 URL: https://issues.apache.org/jira/browse/YARN-7457
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Wangda Tan
>            Assignee: Tao Yang
>
> Currently, different schedulers have slightly different delay scheduling implementations.
Ideally we should make delay scheduling independent from scheduler implementation. Benefits
of doing this:
> 1) Applications can choose which delay scheduling policy to use, it could be time-based
/ missed-opportunistic-based or whatever new delay scheduling policy supported by the cluster.
Now it is global config of scheduler.
> 2) Make scheduler implementations simpler and reusable.
> h2. {color:red}Running design doc: https://docs.google.com/document/d/1rY-CJPLbGk3Xj_8sxre61y2YkHJFK8oqKOshro1ZY3A/edit#heading=h.xnzvh9nn283a{color}



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