[YARN-1821] NPE on registerNodeManager if the request has containers for UnmanagedAMs

• Type: Sub-task
• Status: Closed
• Priority: Blocker
• Resolution: Fixed
• Fix Version/s: 2.4.0
• Component/s: resourcemanager
• Target Version/s: 2.4.0
• Hadoop Flags: Reviewed
• Assignee: Karthik Kambatla
• Reporter: Karthik Kambatla
• Created: 11/Mar/14 16:23
• Updated: 03/Nov/14 18:33
• Resolved: 11/Mar/14 22:21

Description

On RM restart (or failover), NM re-registers with the RM. If it was running containers for Unmanaged AMs, it runs into the following NPE:

Caused by: org.apache.hadoop.ipc.RemoteException(java.lang.NullPointerException): java.lang.NullPointerException
        at org.apache.hadoop.yarn.server.resourcemanager.ResourceTrackerService.registerNodeManager(ResourceTrackerService.java:213)
        at org.apache.hadoop.yarn.server.api.impl.pb.service.ResourceTrackerPBServiceImpl.registerNodeManager(ResourceTrackerPBServiceImpl.java:54)

Issue Links

• relates to: YARN-1849 NPE in ResourceTrackerService#registerNodeManager for UAM