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https://issues.apache.org/jira/browse/YARN-6380?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15941316#comment-15941316
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Yufei Gu commented on YARN-6380:
--------------------------------
Redundancy is evil. Thanks for fixing this. Would you mind fixing the casting
in getHeadRoom() since we are here?
{code}
public Resource getHeadroom() {
final FSQueue queue = (FSQueue) this.queue;
{code}
> FSAppAttempt keeps redundant copy of the queue
> ----------------------------------------------
>
> Key: YARN-6380
> URL: https://issues.apache.org/jira/browse/YARN-6380
> Project: Hadoop YARN
> Issue Type: Bug
> Components: fairscheduler
> Affects Versions: 3.0.0-alpha2
> Reporter: Daniel Templeton
> Assignee: Daniel Templeton
> Attachments: YARN-6380.001.patch, YARN-6380.002.patch
>
>
> The {{FSAppAttempt}} class defines its own {{fsQueue}} variable that is a
> second copy of the {{SchedulerApplicationAttempt}}'s {{queue}} variable.
> Aside from being redundant, it's also a bug, because when moving
> applications, we only update the {{SchedulerApplicationAttempt}}'s {{queue}},
> not the {{FSAppAttempt}}'s {{fsQueue}}.
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