Namenode#1 (source cluster): hdfs://nn1:8020
Namenode#2 (dest cluster): hdfs://nn2:8020

hadoop distcp hdfs://nn1:8020/user/testuser/temp/file-r-0000 hdfs://nn2:8020/user/testuser/dest

hadoop distcp hftp://nn1:8020/user/testuser/temp/file-r-0000 hdfs://nn2:8020/user/testuser/dest

14/02/26 00:04:45 ERROR security.UserGroupInformation: PriviledgedActionException as:testuser@realm cause:java.net.SocketException: Unexpected end of file from server
14/02/26 00:04:45 ERROR security.UserGroupInformation: PriviledgedActionException as:testuser@realm cause:java.net.SocketException: Unexpected end of file from server
14/02/26 00:04:45 INFO fs.FileSystem: Couldn't get a delegation token from nn1ipaddress:8020

14/02/26 00:05:43 ERROR security.UserGroupInformation: PriviledgedActionException as:testuser@realm1 cause:java.io.IOException: Couldn't setup connection for testuser@realm1 to nn/realm2
With failures, global counters are inaccurate; consider running with -i
Copy failed: java.io.IOException: Call to nn1ipaddress failed on local exception: java.io.IOException: Couldn't setup connection for testuser@realm1 to nn/realm2


Caused by: java.io.IOException: Couldn't setup connection for testuser@realm1 to nn/realm2
    at org.apache.hadoop.ipc.Client$Connection$1.run(Client.java:560)
    at java.security.AccessController.doPrivileged(Native Method)
    at javax.security.auth.Subject.doAs(Subject.java:415)
    at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1232)
    at org.apache.hadoop.ipc.Client$Connection.handleSaslConnectionFailure(Client.java:513)
    at org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:616)
    at org.apache.hadoop.ipc.Client$Connection.access$2100(Client.java:203)
    at org.apache.hadoop.ipc.Client.getConnection(Client.java:1254)
    at org.apache.hadoop.ipc.Client.call(Client.java:1098)
    ... 26 more