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Carlo Curino commented on YARN-897: ----------------------------------- [~acmurthy] what's your preference? Keep what we proposed or modify the completedContainer signature? > CapacityScheduler wrongly sorted queues > --------------------------------------- > > Key: YARN-897 > URL: https://issues.apache.org/jira/browse/YARN-897 > Project: Hadoop YARN > Issue Type: Bug > Components: capacityscheduler > Affects Versions: 2.0.4-alpha > Reporter: Djellel Eddine Difallah > Priority: Blocker > Attachments: TestBugParentQueue.java, YARN-897-1.patch, > YARN-897-2.patch > > > The childQueues of a ParentQueue are stored in a TreeSet where UsedCapacity > defines the sort order. This ensures the queue with least UsedCapacity to > receive resources next. On containerAssignment we correctly update the order, > but we miss to do so on container completions. This corrupts the TreeSet > structure, and under-capacity queues might starve for resources. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira