Remove the ZNode for HDFS, YARN, Hive, HBase, and Oozie
If the cluster is configured for Yarn HA, the Resource Managers cannot elect an Active Resource Manager after the migration. You must clear the previous Znode from ZooKeeper so that YARN replaces it.
If the cluster is configured for Ranger KMS, you must delete the Ranger KMS Znode with superuser privileges. When you restart Ranger KMS, the znode gets created with correct privileges.
You must format the ZooKeeper Znode for the failover controller to continue further.
Start ZooKeeper client CLI session from a master node. (Assuming that the
skipACL is set to Yes to avoid
zookeeper-client -server <zk_hostname>
Remove the HDFS HA Failover controller Znode
Remove the YARN ZNode
Remove the Hive ZNode
Remove the HBase ZNode
Remove the Oozie ZNode
Remove the Ranger KMS ZNode