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https://issues.apache.org/jira/browse/YARN-1709?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16301313#comment-16301313
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yangzhangyang commented on YARN-1709:
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Hi, I want to ask you a question about reservation, "Step 7 The Scheduler
will then provide containers from a special queue created to ensure resources
reservation is respected. Within the limits of the reservation, the user has
guaranteed access to the resources, above that resource sharing proceed with
standard Capacity/Fairness sharing." When need reservation-job comes with
reservationId, what will happen if there is no real avail res on node manager,
just wait other am return res or direct preempt other running job's resource?
thanks
> Admission Control: Reservation subsystem
> ----------------------------------------
>
> Key: YARN-1709
> URL: https://issues.apache.org/jira/browse/YARN-1709
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: resourcemanager
> Reporter: Carlo Curino
> Assignee: Subru Krishnan
> Fix For: 2.6.0
>
> Attachments: YARN-1709.patch, YARN-1709.patch, YARN-1709.patch,
> YARN-1709.patch, YARN-1709.patch, YARN-1709.patch, YARN-1709.patch
>
>
> This JIRA is about the key data structure used to track resources over time
> to enable YARN-1051. The Reservation subsystem is conceptually a "plan" of
> how the scheduler will allocate resources over-time.
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