[YARN-2917] Potential deadlock in AsyncDispatcher when system.exit called in AsyncDispatcher#dispatch and AsyscDispatcher#serviceStop from shutdown hook

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Fix Version/s: 2.7.0, 2.6.1, 3.0.0-alpha1
• Component/s: resourcemanager
• Labels: 2.6.1-candidate
• Target Version/s: 2.7.0
• Hadoop Flags: Reviewed
• Assignee: Rohith Sharma K S
• Reporter: Rohith Sharma K S
• Created: 03/Dec/14 14:16
• Updated: 30/Aug/16 01:29
• Resolved: 11/Dec/14 19:19

Description

I encoutered scenario where RM hanged while shutting down and keep on logging 2014-12-03 19:32:44,283 INFO org.apache.hadoop.yarn.event.AsyncDispatcher: Waiting for AsyncDispatcher to drain.