Hi. Here http://www.datastax.com/documentation/cassandra/1.2/webhelp/cassandra/operations/ops_add_node_to_cluster_t.html says that it is needed to wait 2 minutes between adding nodes.
I was trying to figure out why, and how to check if after 2 minutes the conditions to add more nodes are met or I have to wait more... any clues? Thanks! Carlos.