Hi,
We have an 8-node cluster with routing enabled and we're seeing consistently high CPU usage on one node in particular (over 90%). The other 7 nodes flash high at times but don't remain or do so as often.
Is this most likely a hotspot issue?
Also, just out of curiosity, does adaptive replica selection apply when routing is enabled? I know it's turned on by default but not sure if it is utilized in routing as in the default non-routing shard-allocation. So if, with routing enabled, I have P1 (P = primary) on the highly utilized node with R1 (R = replica) and R2 on a couple other less busy nodes, would P1 be generally avoided? My guess is that it would and that this could cause fluctuations in CPU usage across the 3 nodes?
Thanks,
Chris