We have an elastic-search cluster with 3 data nodes and 3 master nodes.
When using it, all traffic(query+indexing) are sent to master nodes in round robin right now. After reading docs, I believe we should change it to sent to data nodes instead. Is that right?
Also, what is going to happen for those requests that are sent to master node? Is this force master nodes to be a "coordinating node"? or it will just redirect to other data nodes?