[jira] [Created] (YARN-7457) Delay scheduling should be an individual policy instead of part of scheduler implementation

["Wangda Tan (JIRA)" <ji...@apache.org>]

Wangda Tan created YARN-7457:
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             Summary: 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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