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https://issues.apache.org/jira/browse/YARN-5892?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15891712#comment-15891712
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Wangda Tan commented on YARN-5892:
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bq. In my mind, overriding queue's MULP with user-specific MULP is equivalent
to adding weights to special users, and would be implemented in a similar way.
Yeah it is similar, and actual it's inspired by what you mentioned above,
weight=x means x unit users. Thus we will only have a identical MULP in the
queue, but have different weights. Which in my mind is easier to be understood
than overwriting MULP.
bq. If I understand correctly, you are saying that the weighted approach gives
more flexibility for future features like user quota, weighted user fair share,
etc. Is that correct?
Yes because we may not want to continue MULP in the future, but we can continue
use weight of users.
> Capacity Scheduler: Support user-specific minimum user limit percent
> --------------------------------------------------------------------
>
> 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
> Attachments: YARN-5892.001.patch, YARN-5892.002.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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