I have a 3 node cluster using the GossipingPropertyFileSnitch and
replication factor of 3. All nodes are leased hardware and more or less the
same. The cassandra-rackdc.properties files look like this:

(rack2 and rack3 for the other nodes)

Now I need to expand the cluster. I was going to use rack4 for the next
node, then rack5 and rack6 because the nodes are physically all on
different racks. Elsewhere on this list someone mentioned that I should use
rack1, rack2 and rack3 again.

Why is that?


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