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https://issues.apache.org/jira/browse/YARN-7681?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Weiwei Yang updated YARN-7681:
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Attachment: YARN-7681-YARN-6592.003.patch
> Scheduler should double-check placement constraint before actual allocation
> is made
> -----------------------------------------------------------------------------------
>
> Key: YARN-7681
> URL: https://issues.apache.org/jira/browse/YARN-7681
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: RM, scheduler
> Reporter: Weiwei Yang
> Assignee: Weiwei Yang
> Attachments: YARN-7681-YARN-6592.001.patch,
> YARN-7681-YARN-6592.002.patch, YARN-7681-YARN-6592.003.patch
>
>
> This JIRA is created based on the discussions under YARN-7612, see comments
> after [this
> comment|https://issues.apache.org/jira/browse/YARN-7612?focusedCommentId=16303051&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-16303051].
> AllocationTagsManager maintains tags info that helps to make placement
> decisions at placement phase, however tags are changing along with
> container's lifecycle, so it is possible that the placement violates the
> constraints at the scheduling phase. Propose to add an extra check in the
> scheduler to make sure constraints are still satisfied during the actual
> allocation.
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