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https://issues.apache.org/jira/browse/YARN-7527?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16433612#comment-16433612
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Weiwei Yang commented on YARN-7527:
-----------------------------------
Hi [~Tao Yang]
Could you please upload a new patch for branch-2? Since this one is already
pushed to trunk, lets get it done in branch-2 ASAP. Thanks
> 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
> Priority: Major
> Fix For: 3.1.0, 3.0.3
>
> Attachments: YARN-7527-branch-2.001.patch, 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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