@Narasimha K
As you are getting the zookeeper kerberos related error as following.
No valid credentials provided (Mechanism level: Connect ion refused)])
occurred when evaluating Zookeeper Quorum Member's received SASL token.
Zookeeper Client will go to AUTH_FAILED state.
So can you pelase share the output of the following file to see if you have [useKeyTab=true] or not?
/etc/zookeeper/conf/zookeeper_client_jaas.conf
/etc/zookeeper/conf/zookeeper_jaas.conf
and
/etc/zookeeper/conf/zookeeper_client_jaas.conf.j2
.