Hi cassandra experts - We're planning a cassandra cluster across 2 datacenters (datacenter-aware, random partitioning) with QUORUM consistency.
It seems to me that with 2 datacenters, if one datacenter is lost, the reads/writes to cassandra will fail in the surviving datacenter because of the N/2 + 1 distribution of replicas. In other words, you need more than half of the replicas to respond but in the case of a datacenter loss you would only ever get 1/2 to respond at best. Is my logic wrong here? Is there a way to ensure the nodes in the alive datacenter respond successfully if the second datacenter is lost? Anyone have experience with this kind of problem? Thanks.
