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https://issues.apache.org/jira/browse/YARN-5453?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15413570#comment-15413570
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sandflee commented on YARN-5453:
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any reason to limit resource demand to maxResource? cc [~kasha]
> FairScheduler#update may skip update demand resource of child queue/app if
> current demand reached maxResource
> -------------------------------------------------------------------------------------------------------------
>
> Key: YARN-5453
> URL: https://issues.apache.org/jira/browse/YARN-5453
> Project: Hadoop YARN
> Issue Type: Bug
> Reporter: sandflee
> Assignee: sandflee
> Attachments: YARN-5453.01.patch
>
>
> {code}
> demand = Resources.createResource(0);
> for (FSQueue childQueue : childQueues) {
> childQueue.updateDemand();
> Resource toAdd = childQueue.getDemand();
> demand = Resources.add(demand, toAdd);
> demand = Resources.componentwiseMin(demand, maxRes);
> if (Resources.equals(demand, maxRes)) {
> break;
> }
> }
> {code}
> if one singe queue's demand resource exceed maxRes, the other queue's demand
> resource will not update.
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