Enabling warehouse-level access control for Hive and Impala in CDW Private Cloud
Cloudera Data Warehouse (CDW) enables you to specify one or more user groups to access a Virtual Warehouse while creating it. As a result, only those users can connect to that Virtual Warehouse, from all supported connection channels such as Hue, JDBC, Beeline, Impala-shell, Impyla, or other Business Intelligence tools. You can enable and disable warehouse-level access control from the Advanced Settings page in the CDW web UI.
If you do not specify a user group while creating a Virtual Warehouse, then the access is not restricted. Any logged-in user can access the Virtual Warehouse.