@Saurabh Gupta The stack traces you provided are a good start, but give little in the way of why the Kerberos ticket is not available. There could be several reasons for this. Maybe the ticket cache was expired or clobbered by some other process? Can you turn on Kerberos debugging and post the logs from that? To enable Kerberos debugging in Java, set the system property "sun.security.krb5.debug" to true. If doing this on the command line, use -Dsun.security.krb5.debug=true Or in code, use System.setProperty("sun.security.krb5.debug", "true"); Kerberos debugging information should be posted to STDOUT. ... View more