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From "Tao Yang (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (YARN-7527) Over-allocate node resource in async-scheduling mode of CapacityScheduler
Date Fri, 17 Nov 2017 08:38:00 GMT

     [ https://issues.apache.org/jira/browse/YARN-7527?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Tao Yang updated YARN-7527:
---------------------------
    Attachment: YARN-7527.001.patch

Attaching init patch for review.

> Over-allocate node resource in async-scheduling mode of CapacityScheduler
> -------------------------------------------------------------------------
>
>                 Key: YARN-7527
>                 URL: https://issues.apache.org/jira/browse/YARN-7527
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: capacityscheduler
>    Affects Versions: 3.0.0-alpha4, 2.9.1
>            Reporter: Tao Yang
>            Assignee: Tao Yang
>         Attachments: YARN-7527.001.patch
>
>
> Currently in async-scheduling mode of CapacityScheduler, node resource may be over-allocated
since node resource check is ignored.
> {{FiCaSchedulerApp#commonCheckContainerAllocation}} will check whether this node have
enough available resource for this proposal and return check result (ture/false), but this
result is ignored in {{CapacityScheduler#accept}} as below.
> {noformat}
> commonCheckContainerAllocation(allocation, schedulerContainer);
> {noformat}
> If {{FiCaSchedulerApp#commonCheckContainerAllocation}} returns false, {{CapacityScheduler#accept}}
should also return false as below:
> {noformat}
> if (!commonCheckContainerAllocation(allocation, schedulerContainer)) {
>   return false;
> }
> {noformat}



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