I'm having issues with Kerberos tickets for Hadoop services not being renewed before they expire. E.g the ticket for Oozie, it is valid for 10h and then it takes a certain number of hours until the ticket is renewed(or recreated) again. I'm expecting there to always be a valid ticket present for the services. The effect of this is e.g that I can't list directories in HDFS as the Oozie user(in the shell), it fails with the following error message: GSS initiate failed [Caused by GSSException: No valid credentials provided (Mechanism level: Failed to find any Kerberos tgt)] I can renew the ticket again manually using the keytab which makes the HDFS listing work but i feel that it shouldn't be necessary. Strangely enough there are never any service related errors in Ambari. Any ideas on how to resolve this? ... View more