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https://issues.apache.org/jira/browse/YARN-8095?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16430190#comment-16430190
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kyungwan nam commented on YARN-8095:
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I don't think that's a bug.
an app with ‘label1’ node-label must get the preference on ‘lable1’ partition.
therefore, containers, which are placed on ‘label1’ partition by non-exclusive
allocation should be preempted firstly.
IMHO, rather than preemption problem, I think the way to disable non-exclusive
allocation should be provided.
> 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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