According to quickstart document(http://druid.io/docs/latest/tutorials/quickstart.html),
Druid project is composed 5 modules ( historical, overlord, broker, middle-manager, coordinator ).
But production cluster configuration document (http://druid.io/docs/latest/configuration/production-cluster.html) says about realtime node.
I think realtime node’s roll is same to roll of middle-manager and peons.
Is it right? Is there another realtime node?
If it’s right, document should be modified.