Hi, We are running Cassandra 3.6 and want to bump up Cassandra nodes in an existing datacenter from 3 to 12 (plan to move to r3.xlarge machines to leverage more memory instead of m4.2xlarge). Bootstrapping a node would take 7-8 hours.
If this activity is performed serially then it will take 5-6 days. I had a look at CASSANDRA-7069 <https://issues.apache.org/jira/browse/CASSANDRA-7069> and a bit of discussion in the past at - http://grokbase.com/t/cassandra/user/147gcqvybg/adding-more-nodes-into-the-cluster. Wanted to know if the limitation is still applicable and race condition could occur in 3.6 version. If this is not the case can we add a new datacenter as mentioned here opsAddDCToCluster <https://docs.datastax.com/en/cassandra/3.x/cassandra/operations/opsAddDCToCluster.html> and bootstrap multiple nodes simultaneously by keeping auto_bootstrap false in cassandra.yaml and rebuilding nodes simultaneously in the new dc? Thanks & Regards, Bhuvan
