Hi Team, We need to migrate the Druid cluster to a new Zookeeper ensemble. In terms of the config change, it is quite simple to update the list of hosts in

common.runtime.properties

. Do we need to do anything else? Do we need to copy the ZK DB from the existing ZK hosts to the new hosts? Also, to shutdown the cluster, we follow the below order: 1. Routers 2. Brokers 3. Coordinator-Overlord 4. Historicals & MMs 5. ZK Cluster start-up is in the reverse order. Is this correct? Regards, AR.

no need to migrate ZK data to the new servers, but you do need to shut down and re-start all the Druid processes it would go like: • shut down all Druid processes • edit

common.runtime.properties

on all servers • start all Druid processes back up starting up in reverse order of shutdown sounds good to me