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From "Daniel Templeton (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-7457) Delay scheduling should be an individual policy instead of part of scheduler implementation
Date Wed, 08 Nov 2017 17:23:01 GMT

    [ https://issues.apache.org/jira/browse/YARN-7457?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16244360#comment-16244360
] 

Daniel Templeton commented on YARN-7457:
----------------------------------------

I think it makes good sense to abstract that out as a service.  It was actually on my todo
list.

> 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: Wangda Tan
>
> 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.



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