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https://issues.apache.org/jira/browse/YARN-8095?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16429983#comment-16429983
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Weiwei Yang commented on YARN-8095:
-----------------------------------

In this case, when an app is submitted to {{root.label1}}, that looks like it 
should preempt resource from {{root.batch}} instead of {{root.longlived}} 
right? As {{root.batch}} uses more resource than guaranteed (50%) and it has 
same priority with root.label1. Unless there is some bug in preemption logic, 
is this correct?

> Allow disable non-exclusive allocation
> --------------------------------------
>
>                 Key: YARN-8095
>                 URL: https://issues.apache.org/jira/browse/YARN-8095
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: capacity scheduler
>    Affects Versions: 2.8.3
>            Reporter: kyungwan nam
>            Priority: Major
>
> We have 'longlived' Queue, which is used for long-lived apps.
> In situation where default Partition resources are not enough, containers for 
> long-lived app can be allocated to sharable Partition.
> Since then, containers for long-lived app can be easily preempted.
> We don’t want long-lived apps to be killed abruptly.
> Currently, non-exclusive allocation can happen regardless of whether the 
> queue is accessible to the sharable Partition.
> It would be good if non-exclusive allocation can be disabled at queue level.



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