Hello @Hae  AFAIK, Data Connections is a Public Cloud Concept & isn't available in Private Cloud yet. In Public Cloud, [1] shows the Steps to configure Data Connections, which allows you to access the HMS of the DataLake (Unified HMS Source For The Environment). In Private Cloud, You may use the [2] to use Spark on CML. The same has Example on using Spark-On-Yarn on Base Cluster as well as Spark-On-Kubernetes on CML. - Smarak [1] https://docs.cloudera.com/machine-learning/cloud/mlde/topics/ml-mlde-spark-data-connection.html  [2] https://docs.cloudera.com/machine-learning/1.5.2/spark/topics/ml-apache-spark-overview.html  ... View more