Jason Lowe created YARN-325:
-------------------------------
Summary: RM CapacityScheduler can deadlock when getQueueInfo() is
called and a container is completing
Key: YARN-325
URL: https://issues.apache.org/jira/browse/YARN-325
Project: Hadoop YARN
Issue Type: Bug
Components: capacityscheduler
Affects Versions: 0.23.5, 2.0.2-alpha
Reporter: Jason Lowe
Priority: Critical
If a client calls getQueueInfo on a parent queue (e.g.: the root queue) and
containers are completing then the RM can deadlock. getQueueInfo() locks the
ParentQueue and then calls the child queues' getQueueInfo() methods in turn.
However when a container completes, it locks the LeafQueue then calls back into
the ParentQueue. When the two mix, it's a recipe for deadlock.
Stacktrace to follow.
--
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
