Sunil G commented on YARN-1963:

Thank you [~vinodkv] and [~nroberts] for the comments.

Considering usability ways, labels will be handy. And scheduler must be 
agnostic of labels and should handle only integers like in linux. This will 
have a complexity on priority manager inside RM which will translate label -> 
integer an vice versa. But a call can be taken by seeing all possibilities and 
can be standardized the same so that a minimal working version can be pushed in 
by improvising on the patches submitted (working prototype was attached). 
Hoping [~leftnoteasy] and [~eepayne] to join the discussion.

> 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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