While restarting the hive server-2 not getting restart with the error : org.apache.hadoop.ipc.RemoteException(javax.security.sasl.SaslException): GSS initiate failed
Are you running in a kerberized env? And you're trying to restart manually or through ambari?
BTW try to check the keytab for the hive-server user, and look if its still valid.
Hope this helps!