Jason Lowe created YARN-4610: -------------------------------- Summary: Reservations continue looking for one app causes other apps to starve Key: YARN-4610 URL: https://issues.apache.org/jira/browse/YARN-4610 Project: Hadoop YARN Issue Type: Bug Components: capacityscheduler Affects Versions: 2.7.1 Reporter: Jason Lowe Assignee: Jason Lowe Priority: Blocker
CapacityScheduler's LeafQueue has "reservations continue looking" logic that allows an application to unreserve elsewhere to fulfil a container request on a node that has available space. However in 2.7 that logic seems to break allocations for subsequent apps in the queue. Once a user hits its user limit, subsequent apps in the queue for other users receive containers at a significantly reduced rate. -- This message was sent by Atlassian JIRA (v6.3.4#6332)