Hi @MikeJones,   I'm not sure what you are saying.  Either you have Kerberos authentication enabled in a cluster or you don't.  In order to use BDR HDFS replication, you need to have Kerberos enabled on both clusters or not enabled in both clusters.   For information about how BDR replication supports replicating between clusters in different realms, see: https://www.cloudera.com/documentation/enterprise/latest/topics/cm_bdr_replication_and_kerberos.html   -Ben ... View more