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https://issues.apache.org/jira/browse/YARN-5892?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15969256#comment-15969256
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Sunil G commented on YARN-5892:
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bq.Yes, the user weight of 0 case is a special one that we would like to
explore, but certainly not in this JIRA.
Yes, we could discuss more about the definition in separate jira. For now,
could we avoid taking 0 as a valid configuration.
bq.These methods then multiply the value of userLimitResource by the
appropriate user weight(s), which will result in the correct value of userLimit
for that specific user
Sure. Since we multiply again later, we can get the same userlimit back. A
value less than one as weight is going to be trickier but we are rounding off
to minimumAllocation. So i think its fine given patch have logs and UI.
bq.
{code}
495 if (activeUsersSet.contains(userName)) {
496 user.setUserResourceLimit(userSpecificUserLimit);
497 }
{code}
If *activeUsersSet* has userName, i think *user* cant be null. Correct?
> 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: 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
>
>
> 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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