I'm about to upgrade my 1.1.0 cluster and
2) Upgrade one node at a time, running the clustered in a mixed
1.1.2->1.1.9 configuration for a number of days.
"If you are upgrading to Cassandra 1.1.9 from a version earlier than 1.1.7, all nodes must be upgraded before any streaming can take place. Until you upgrade all nodes, you cannot add version 1.1.7 nodes or later to a 1.1.7 or earlier cluster."
Which one is correct then? Can I run mixed 1.1.2 (in my case 1.1.0) & 1.1.9 cluster or not?