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From "Sunil G (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-5892) Support user-specific minimum user limit percentage in Capacity Scheduler
Date Fri, 07 Jul 2017 17:57:00 GMT

    [ https://issues.apache.org/jira/browse/YARN-5892?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16078444#comment-16078444
] 

Sunil G commented on YARN-5892:
-------------------------------

Thanks [~eepayne] for the effort.

YARN-3140 is currently available in trunk. Hence will it be better to get YARN-5889 to branch-2
atleast. Yes, as you mentioned the delta between branch-2 and branch-2.8 is more due the absence
of YARN-3140 and its related jiras. I think in a long run we need to make a call whether those
changes are really needed to be pulled to branch-2.8

If this is the case, could we have branch-2 patch of this ticket to be dependent on YARN-5889.
And branch-2.8 patch as the way you attached already here? Thoughts.

Regarding {{activeUsersSet}}, we are kind of updating this reference under readLock also.
I think it might need to be put it under writeLock for better safety.


> Support user-specific minimum user limit percentage in Capacity Scheduler
> -------------------------------------------------------------------------
>
>                 Key: YARN-5892
>                 URL: https://issues.apache.org/jira/browse/YARN-5892
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: capacityscheduler
>            Reporter: Eric Payne
>            Assignee: Eric Payne
>             Fix For: 3.0.0-beta1
>
>         Attachments: Active users highlighted.jpg, YARN-5892.001.patch, YARN-5892.002.patch,
YARN-5892.003.patch, YARN-5892.004.patch, YARN-5892.005.patch, YARN-5892.006.patch, YARN-5892.007.patch,
YARN-5892.008.patch, YARN-5892.009.patch, YARN-5892.010.patch, YARN-5892.012.patch, YARN-5892.013.patch,
YARN-5892.014.patch, YARN-5892.015.patch, YARN-5892.branch-2.015.patch
>
>
> Currently, in the capacity scheduler, the {{minimum-user-limit-percent}} property is
per queue. A cluster admin should be able to set the minimum user limit percent on a per-user
basis within the queue.
> This functionality is needed so that when intra-queue preemption is enabled (YARN-4945
/ YARN-2113), some users can be deemed as more important than other users, and resources from
VIP users won't be as likely to be preempted.
> For example, if the {{getstuffdone}} queue has a MULP of 25 percent, but user {{jane}}
is a power user of queue {{getstuffdone}} and needs to be guaranteed 75 percent, the properties
for {{getstuffdone}} and {{jane}} would look like this:
> {code}
>   <property>
>     <name>yarn.scheduler.capacity.root.getstuffdone.minimum-user-limit-percent</name>
>     <value>25</value>
>   </property>
>   <property>
>     <name>yarn.scheduler.capacity.root.getstuffdone.jane.minimum-user-limit-percent</name>
>     <value>75</value>
>   </property>
> {code}



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