@ibrahima  This community helps in 2 of the most used Hadoop flavors Cloudera and Hortonworks and these 2 software vendors handled and configured differently their Kerberos.   In cloudera the keytabs are found in /run/cloudera-scm-agent/process/* while in hortonworks it's in /etc/security/keytabs/* so it would be good if you clearly stated. Please include the description of your cluster too like HA or not I see from the log failover to rm16 which suggest you have RM HA?  Has the user kinited  before attempting the operation. Is user impersonating cabhbwg  Happy hadooping   ... View more