No, from NiFi 1.0 there is 0-master philosophy is CONSIDERED. And each node in the NiFi cluster is the same. NiFi cluster is managed by the Zookeeper. Apache ZooKeeper elects a single node as the Cluster Coordinator, and failover is HANDLED automatically by ZooKeeper. All cluster nodes report HEARTBEAT and status INFORMATION to the Cluster Coordinator. The Cluster Coordinator is responsible for disconnecting and connecting nodes. Additionally, every cluster has ONE Primary Node, also elected by ZooKeeper.

No, from NiFi 1.0 there is 0-master philosophy is considered. And each node in the NiFi cluster is the same. NiFi cluster is managed by the Zookeeper. Apache ZooKeeper elects a single node as the Cluster Coordinator, and failover is handled automatically by ZooKeeper. All cluster nodes report heartbeat and status information to the Cluster Coordinator. The Cluster Coordinator is responsible for disconnecting and connecting nodes. Additionally, every cluster has one Primary Node, also elected by ZooKeeper.