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https://issues.apache.org/jira/browse/YARN-2475?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14132210#comment-14132210
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Chris Douglas commented on YARN-2475:
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Yes, that makes sense. Just curious about the contract.
> ReservationSystem: replan upon capacity reduction
> -------------------------------------------------
>
> Key: YARN-2475
> URL: https://issues.apache.org/jira/browse/YARN-2475
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: resourcemanager
> Reporter: Carlo Curino
> Assignee: Carlo Curino
> Attachments: YARN-2475.patch, YARN-2475.patch, YARN-2475.patch
>
>
> In the context of YARN-1051, if capacity of the cluster drops significantly
> upon machine failures we need to trigger a reorganization of the planned
> reservations. As reservations are "absolute" it is possible that they will
> not all fit, and some need to be rejected a-posteriori.
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