[HDFS-12339] NFS Gateway on Shutdown Gives Unregistration Failure. Does Not Unregister with rpcbind Portmapper

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.6.0
• Fix Version/s: 3.1.0
• Component/s: nfs
• Target Version/s: 3.1.0
• Hadoop Flags: Reviewed
• Assignee: Mukul Kumar Singh
• Reporter: Sailesh Patel
• Created: 23/Aug/17 03:16
• Updated: 23/Sep/17 19:49
• Resolved: 23/Sep/17 19:34

Description

When stopping NFS Gateway the following error is thrown in the NFS gateway role logs.

2017-08-17 18:09:16,529 ERROR org.apache.hadoop.oncrpc.RpcProgram: Unregistration failure with localhost:2049, portmap entry: (PortmapMapping-100003:3:6:2049)

2017-08-17 18:09:16,531 WARN org.apache.hadoop.util.ShutdownHookManager: ShutdownHook 'NfsShutdownHook' failed, java.lang.RuntimeException: Unregistration failure
java.lang.RuntimeException: Unregistration failure
..
Caused by: java.net.SocketException: Socket is closed
at java.net.DatagramSocket.send(DatagramSocket.java:641)
at org.apache.hadoop.oncrpc.SimpleUdpClient.run(SimpleUdpClient.java:62)

Checking rpcinfo -p : the following entry is still there:
" 100003 3 tcp 2049 nfs"