In the event that a multi-master deployment has overallocated nodes, you can remove
or decommission the unwanted masters through Cloudera Manager.
You can not decommission a leader master role from the cluster. You can only
decommission a follower master role. If you want to decommission multiple master
roles, do it one by one.
You must have multiple master roles added in your cluster.
In Cloudera Manager, go to Kudu > Instances.
Select the master role instance you want to decommission, and click Actions for Selected > Decommission.
Review the changes in log files, and click Close.
Now, the master role instance is decommissioned from the cluster.
