We recently split our 6-node solr datacenter into a no-Solr Cassandra datacenter and a Solr datacenter (dse delegate snitch). I'm noticing high load on one of the nodes in the Cassandra DC and according to OpsCenter, it's rebuilding the secondary index.
The only secondary index should be Solr indexes which I wouldn't think it should be rebuilding. Should it?
Does something need to be done to scrub the secondary indexes or is this expected behavior?