We have a 2.4 cluster.
We excluded few nodes for certain indices using the exclude setting in our cluster which triggered a relo of 220 shards. we had concurrent_rebalance set to 2 but it didnt take any effect. Is there a way to disabled all this rebalancing that is happening?
will cluster.routing.rebalance.enabled: none help?
also what is generic threadpool used for ? is it for the above rebalance? we see 100+ threads being used by that threadpool?