Hey all, Assuming a cluster with X > 1 application nodes backed by Y > 1 Cassandra nodes, how do you best apply a schema modification?
Typically, such a schema modification is going to be done in parallel with code changes (for querying the table) so all application nodes have to be restarted. However, in our case we can't (or don't want to) restart/turn off all application nodes at the same time. So do we have to guarantee that the schema change will be backwards compatible? Which node should send the schema change query? Should we just make all nodes send it and ignore failures? It's unclear to me how data model schema changes are done in a clustered environment. What are some good practices for handling this issue? Thanks,Sotirios
