Sunil G commented on YARN-2004:

Yes [~jlowe]. 
Agreeing to your point. As of now, I have given a configuration to specify 
default priority in a queue. That can be applied for those applications which 
are submitted w/o priority. A cluster wide config also will be added, and given 
a queue level config, it can override customer wide default value. I will 
update patch as per this understanding. Thank you.

> Priority scheduling support in Capacity scheduler
> -------------------------------------------------
>                 Key: YARN-2004
>                 URL: https://issues.apache.org/jira/browse/YARN-2004
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: capacityscheduler
>            Reporter: Sunil G
>            Assignee: Sunil G
>         Attachments: 0001-YARN-2004.patch
> Based on the priority of the application, Capacity Scheduler should be able 
> to give preference to application while doing scheduling.
> Comparator<FiCaSchedulerApp> applicationComparator can be changed as below.   
> 1.    Check for Application priority. If priority is available, then return 
> the highest priority job.
> 2.    Otherwise continue with existing logic such as App ID comparison and 
> then TimeStamp comparison.

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