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From "Lei Guo (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-1963) Support priorities across applications within the same queue
Date Wed, 22 Apr 2015 16:18:01 GMT

    [ https://issues.apache.org/jira/browse/YARN-1963?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14507332#comment-14507332
] 

Lei Guo commented on YARN-1963:
-------------------------------

Agree with [~jlowe], integer is the base of priority, and label should be just an alias during
application submission. If we keep both label and integer in the system, it could be complicate
when administrator changing the label/range mapping.

It's true that we do not expect the user to assign many different priorities, but we may enhance
scheduler to calculate priority dynamically based on certain criteria, for example, the pending
time or at certain time frame. In this case, the priority could be any number.

> 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: 0001-YARN-1963-prototype.patch, YARN Application Priorities Design.pdf,
YARN Application Priorities Design_01.pdf
>
>
> 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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