Deadlock in preemption code in fair scheduler ---------------------------------------------
Key: MAPREDUCE-1436 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1436 Project: Hadoop Map/Reduce Issue Type: Bug Components: contrib/fair-share Affects Versions: 0.21.0, 0.22.0 Reporter: Matei Zaharia Assignee: Matei Zaharia Priority: Blocker In testing the fair scheduler with preemption, I found a deadlock between updatePreemptionVariables and some code in the JobTracker. This was found while testing a backport of the fair scheduler to Hadoop 0.20, but it looks like it could also happen in trunk and 0.21. Details are in a comment below. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.