I have a cluster of 4 ec2 nodes with 4 cores and 35gb ram each.
The cluster worked pretty good(with 0 replicas), until I changed all
indexes to have 1 replica, then everything became terribly slow.
The cluster size is about 300gb(with replica 600).
Does adding replicas cripple performance by that much?
I imagined it would actually be beneficial to
search performance, because more nodes can serve the same data(slower
indexing though, makes sense).