On 16 April 2014 05:08, Jonathan Lacefield <jlacefi...@datastax.com> wrote:
> Assuming you have enough nodes not undergoing "move" to meet your CL > requirements, then yes, your cluster will still accept reads and writes. > However, it's always good to test this before doing it in production to > ensure your cluster and app will function as designed. > This is not a correctness requirement: writes go to the move source and destination during the move and reads come from the source. Otherwise you could lose data during move (and certainly would lose data if replication factor was one). However, nodes that are involved in the move will be slower so it will be better for performance to not move nodes that share replicas simultaneously. Richard.
