Creating a CML data connection to an Impala data warehouse

Learn how to connect natively to data stored in Impala when using Data Visualization in Cloudera Machine Learning (CML).

You must connect to your data prior to using the data modeling and visualization functions. The following steps show you how to create a new CML data connection to an Impala data warehouse.

When you create a connection, you automatically gain privileges to create and manage datasets associated with this connection, and to build dashboards and visuals within these datasets.

For more information on the Manage data connections privilege, see RBAC permissions.
For instructions on how to define privileges for a specific role, see Setting role privileges.
For instructions on how to assign the administrator role to a user, see Promoting a user to administrator.

On the main navigation bar, click DATA.
The DATA interface appears, open on the Datasets tab.
In the Data side menu bar, click NEW CONNECTION.
note
The NEW CONNECTION button is only accessible to users assigned to roles with the Manage data connections privilege and to administrators.

The Create New Data Connection modal window appears.
Select the Impala Connection type from the drop-down list and provide a name for your connection.
Enter the hostname or IP address of the running coordinator.
You can get the coordinator hostname from the JDBC URL of the Impala DW.
Enter 443 in the Port # field.
Enter your workload username and password as credentials.
Click the Advanced tab and configure the additional details.
1. Locate the Impala Endpoint for the data hub.
2. Copy it and paste it into the HTTP Path field.
Click TEST to test the connection.
Click CONNECT to create the connection.

You have set up a connection to a running Impala DW.