So as I understand, Cluster B already has some data and not an empty cluster.
When you say, clusters share same keyspace and table names, do you mean both clusters have identical data on those ks/tables? -Arvi On Thu, Jan 16, 2020, 5:27 PM Ankit Gadhiya <ankitgadh...@gmail.com> wrote: > Hello Group, > > I have a requirement in one of the production systems where I need to be > able to migrate entire dataset from Cluster A (Azure Region A) to Cluster B > (Azure Region B). > > Each cluster have 3 Cassandra nodes (RF=3) running used by different > applications. Few of the applications are common is Cluster A and Cluster B > thereby sharing same keyspace/table names. > Need suggestion for the best possible migration strategy here considering > - 1. No Application code changes possible - Minor config/infra changes can > be considered. 2. Zero data loss. 3. No/Minimal downtime. > > It'd be great to hear ideas from all of you based on your experiences. > > Cassandra Version - Cassandra 3.0.13 on both sides. > Total Data size - Cluster A: 70 GB, Cluster B: 15 GB > > *Thanks & Regards,* > *Ankit Gadhiya* > >
