Cloudera Docs

Impala

After transitioning your cluster from HDP 3.1.5.x to Cloudera Private Cloud Base, you can manually install the Impala service.

Impala is a new service that is not available in HDP. By default Impala uses the cm_hive ranger service for authorization.

If you want to use the same Ranger service which Hive is using, you must:

On the Cloudera Manager UI:

  1. Update the service name through safety valve in Cloudera Manager UI for the Impala service. In ranger-impala-security.xml, add ranger.plugin.hive.service.name = <migrated_hive_ranger_service_name> hive service name. For example, cl1_hive

On the Ranger Admin UI:

  1. Add the Impala user in policy.download.auth.users and tag.download.auth.users configurations in the migrated hive ranger service. For example, cl1_hive.
  2. Add the Impala user to the default policies in the migrated hive ranger service. For example, cl1_hive.