Setting up connection metadata to be used in the Jobs
In this scenario, an HDFS connection and an HCatalog connection are repeatedly
used in different Jobs. To simplify component configurations, we centralize
those connections under a Hadoop cluster connection in the Repository view for easy reuse.
These centralized metadata items can be used to set up connection details in different components and Jobs. These connections do not have table schemas defined along with them; therefore, we will create generic schemas separately later on when configuring the example Jobs.