When there are some security problems, not all the info goes back to the client, which sees
Caused by: org.apache.hadoop.ipc.RemoteException: GSS initiate failed
at org.apache.hadoop.security.SaslRpcClient.saslConnect(SaslRpcClient.java:373) ~[hadoop-common-2.4.0.jar:na]
It's only server-side the diagnostics surface, here some javax crypto issues
2014-05-24 14:17:34,314 INFO org.apache.hadoop.ipc.Server: Socket Reader #1 for port 9090: readAndProcess from client 192.168.1.86 threw exception [javax.security.sasl.SaslException: GSS initiate failed [Caused by GSSException: Failure unspecified at GSS-API level (Mechanism level: Encryption type AES256 CTS mode with HMAC SHA1-96 is not supported/enabled)]]
-the inner exception text isn't making it back to the client...