Hi all, I have filed CEP-40 [1] for live migrating Cassandra instances using the Cassandra Sidecar.
When someone needs to move all or a portion of the Cassandra nodes belonging to a cluster to different hosts, the traditional approach of Cassandra node replacement can be time-consuming due to repairs and the bootstrapping of new nodes. Depending on the volume of the storage service load, replacements (repair + bootstrap) may take anywhere from a few hours to days. Proposing a Sidecar based solution to address these challenges. This solution proposes transferring data from the old host (source) to the new host (destination) and then bringing up the Cassandra process at the destination, to enable fast instance migration. This approach would help to minimise node downtime, as it is based on a Sidecar solution for data transfer and avoids repairs and bootstrap. Looking forward to the discussions. [1] https://cwiki.apache.org/confluence/display/CASSANDRA/CEP-40%3A+Data+Transfer+Using+Cassandra+Sidecar+for+Live+Migrating+Instances Thanks! Hari
