Djellel Eddine Difallah created YARN-897: --------------------------------------------
Summary: CapacityScheduler wrongly sorted queues Key: YARN-897 URL: https://issues.apache.org/jira/browse/YARN-897 Project: Hadoop YARN Issue Type: Bug Components: capacityscheduler Reporter: Djellel Eddine Difallah 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