I have changed this line in my.cnf: socket=/var/lib/mysql/mysql.sock to this  socket=/var/run/mysqld/mysql.sock and that fixed it!   I think Cloudera has to review its installation guide ... I have faced many difficulties so far ... They tell you to do A and B to get C  ... you do A and B but you don't get C!! ...    ... View more

Hi Gzigldrum,     Thank you for the reply,      I found the Route cause and resolved the issue myself,     my proxy server principal is not listing in the impla demon keytab , impla/proxy@relim  in none of the demon nodes,   i cross checked the Impala Daemons Load Balancer has confiured to Executor  group feild eariler with value " proxyhost:port" this where its not reflecting ,because none of the impla demon nodes are present in executor group .    All the impla demon nodes are present in "impala demon default group, i have added the value '"proxyhost:port"  in this field and restarted the impala service, when is cross cehck the princaipl in demon node the impala keytab has the impla/proxy@relim, and the kerberos authentication from proxy server started working fro the impala.   Regards, Pandu   ... View more