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From "Devaraj K (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-1963) Support priorities across applications within the same queue
Date Thu, 19 Feb 2015 10:08:14 GMT

    [ https://issues.apache.org/jira/browse/YARN-1963?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14327196#comment-14327196

Devaraj K commented on YARN-1963:

I would also agree for numbers rather than labels for not to make it more complex. If we are
moving with numbers, I think we can just use the existing priority API from ApplicationSubmissionContext.setPriority(Priority
priority) and not required any new API's to expose to clients.

We may need to think for M/R Job priory case, M/R Job supports enums for priority (i.e. VERY_HIGH,
HIGH, NORMAL, LOW, VERY_LOW) and we need to have some mechanism to map these enums to priority

> Support priorities across applications within the same queue 
> -------------------------------------------------------------
>                 Key: YARN-1963
>                 URL: https://issues.apache.org/jira/browse/YARN-1963
>             Project: Hadoop YARN
>          Issue Type: New Feature
>          Components: api, resourcemanager
>            Reporter: Arun C Murthy
>            Assignee: Sunil G
>         Attachments: YARN Application Priorities Design.pdf, YARN Application Priorities
> It will be very useful to support priorities among applications within the same queue,
particularly in production scenarios. It allows for finer-grained controls without having
to force admins to create a multitude of queues, plus allows existing applications to continue
using existing queues which are usually part of institutional memory.

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