Operational database cluster
You can use the Operational Database (OpDB) Data Hub cluster definition in CDP to create an OpDB workload cluster that has Apache HBase, Apache Phoenix, and all the required services such as HDFS and ZooKeeper. The OpDB cluster uses Amazon S3 as a storage layer for HBase, where HFiles are written to S3, but WALs are written to HDFS.
The Operational Database with SQL cluster definition consists of Apache HBase, Apache Phoenix, and the underlying HDFS and Apache ZooKeeper services that it needs to operate. Apache Knox is used for the proxying of the different user interfaces.
Each cluster definition must reference a specific cluster template. For example, And, you can also create and upload your custom cluster templates. For example, you can export a cluster template from an existing on-prem HDP cluster and register it in CDP to use it for creating Data Hub clusters.