Migrating Impala Catalog to another host

You can move the Impala Catalog Server role to a new host using Cloudera Manager.

1. Log in to Cloudera Manager
2. Stop the Impala service and all dependent services, including Oozie and Hue.
3. Go to the Impala instances page and select the Impala Catalog Server role type.
4. Click on Actions for Selected and choose Delete to remove the existing role. Confirm the deletion.
5. Click Add Role Instances and assign the Impala Catalog Server role to the desired host.
6. Restart the Impala service.

The Impala Catalog Server role now runs on a new host.