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From "Wangda Tan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-2986) (Umbrella) Support hierarchical and unified scheduler configuration
Date Mon, 23 Feb 2015 19:57:14 GMT

    [ https://issues.apache.org/jira/browse/YARN-2986?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14333728#comment-14333728
] 

Wangda Tan commented on YARN-2986:
----------------------------------

Hi [~sunilg], 
Thanks for sharing your thoughts :).

bq. Do you mean that, non repeating items are kept outside loop of queues and changing items
are kept inside each queue?
No, what I meant is, if a field *need* to be set in queue level, policy-properties should
be a part of queue, and also global is some fields need to be "global".

For your 2nd point, providing a way to make policy-properties linkable. However, I think for
most of the fields, like capacity, label settings, etc. should be different for different
queues, adding links might make people get confused. And queues have to overwrite some fields
to make their own. 

Alternatively, I think we can use inherit to make configuration easier, for example, a parent
queue's accessible-node-labels will be inherited by its children if its children don't overwrite.

Thoughts? 

> (Umbrella) Support hierarchical and unified scheduler configuration
> -------------------------------------------------------------------
>
>                 Key: YARN-2986
>                 URL: https://issues.apache.org/jira/browse/YARN-2986
>             Project: Hadoop YARN
>          Issue Type: Improvement
>            Reporter: Vinod Kumar Vavilapalli
>            Assignee: Wangda Tan
>         Attachments: YARN-2986.1.patch
>
>
> Today's scheduler configuration is fragmented and non-intuitive, and needs to be improved.
Details in comments.



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