[YARN-2997] NM keeps sending already-sent completed containers to RM until containers are removed from context

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.6.0
• Fix Version/s: 2.7.0, 2.6.1, 3.0.0-alpha1
• Component/s: nodemanager
• Labels: 2.6.1-candidate
• Hadoop Flags: Reviewed
• Assignee: Chengbing Liu
• Reporter: Chengbing Liu
• Created: 30/Dec/14 06:32
• Updated: 30/Aug/16 01:28
• Resolved: 08/Jan/15 19:29

Description

We have seen in RM log a lot of

INFO org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler: Null container completed...

It is caused by NM sending completed containers repeatedly until the app is finished. On the RM side, the container is already released, hence getRMContainer returns null.