Consider the following flow where records are inserted in the RDBMS (or Phoenix/HBase in this instance):
The PutSQL and similar processor depends on a database connection, provided by a DBCPConnectionPool controller service (Controller Settings -> Controller Services):
The best part: when one creates a template, all linked services will automatically be included. When template is rehydrated in another NiFi instance, services like the one below will automatically be added to the new NiFi flow:
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