When you create an environment in the Cloudera Data Platform (CDP) Management Console, it automatically creates a Kerberos- and TLS-enabled data lake cluster. Data hub clusters are linked to environments, and therefore also have Kerberos enabled by default. You do not need to do anything to enable Kerberos or TLS for Apache Spark in CDP. Disabling security is not supported.
To submit Spark jobs to the cluster, users must authenticate with their Kerberos credentials. For more information, see the Environments documentation.