I have a 3 node (all data/master) cluster running version 2.3.1. Each day I build a new 70GB (includes 1 replica) index, switch an alias at the end and drop the old index. The issue I'm having is the build process is hurting search performance. It gets worse at the end when I re-enable refresh (set to -1 for build phase).
I'd like to be able to throttle the index so it won't impact searching so much. so far I've tried:
Setting the refresh to 30s so it's not one big hit at the end (helped a little)
Playing with indices.store.throttle.max_bytes_per_sec (and type=merge), didn't seem to make any difference)