In today's Apache NiFi, there is a new and improved means of load balancing data between nodes in a cluster. With the introduction of NiFi 1.8.0, connection load balancing has been added between every processor in any connection. You now have an easy to set option for automatically load balancing between your nodes.
The legacy days of using Remote Process Groups to distribute the load between Apache NiFi nodes is over. For maximum flexibility, performance and ease, please make sure you upgrade your existing flows to use the built-in Connection Load Balancing.