Hi, We have a cluster with one Data Center of 3 nodes in GCP-US(RF=3).Current apache cassandra version 3.11.6. We are planning to add one new Data Center of 3 nodes in GCP-India.
At peak hours, files generation in commit logs at GCP-US side on one node is around 1 GB per minute (i.e 17+ mbps). Currently the file transfer speed from GCP US to India is 9 mbps. So, with this speed, is it possible in cassandra to perform asynchronous write in new DC(India)? Also, is there any compression technique which cassandra applies while transferring data across DC? *My assumption *: All 3 coordinator nodes in US will be responsible for transfering 1/3rd data to new DC. So, at peak time only 1GB/3 is what each node has to sync. Please let me know is my assumption right? If yes, what will happen if data generated in commit log per node increase to 3 GB per minute tomorrow. Regards, Ashish
