[
https://issues.apache.org/jira/browse/YARN-4462?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15067466#comment-15067466
]
Tao Jie commented on YARN-4462:
-------------------------------
In the attached patch, we add disable preemption tag for queues in
fair-scheduler.xml. eg:
{code}
<queue name="queueA">
<minResources>1024mb,0vcores</minResources>
<disablePreemption/>
</queue>
{code}
With the disablePreemption tag, this queue and its descendants could not be
preempted.
[~kasha], would you give it a quick review?
> FairScheduler: Disallow preemption from a queue
> -----------------------------------------------
>
> Key: YARN-4462
> URL: https://issues.apache.org/jira/browse/YARN-4462
> Project: Hadoop YARN
> Issue Type: Improvement
> Components: fairscheduler
> Affects Versions: 2.6.0
> Reporter: Tao Jie
> Assignee: Tao Jie
> Attachments: YARN-4462.001.patch
>
>
> When scheduler preemption is enabled, applications could be preempted if they
> obtain resource over they should take.
> When a mapreduce application is preempted some resource, it just runs slower.
> However, when the preempted application is a long-run service, such as tomcat
> running in slider, the service would fail.
> So we should have a flag for application to indicate the scheduler that those
> application should not be preempted.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
