Eric Payne created MAPREDUCE-6812:
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Summary: Capacity Scheduler: Support user-specific minimum user
limit percent
Key: MAPREDUCE-6812
URL: https://issues.apache.org/jira/browse/MAPREDUCE-6812
Project: Hadoop Map/Reduce
Issue Type: Improvement
Components: yarn, capacity-sched
Reporter: Eric Payne
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}
NOTE: This should be implemented in a way that user-limit-percent-intra-queue
preemption (YARN-2113) should not be affected.
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