Cassandra supports elastic scalability - meaning on demand we can increase or decrease #of nodes as per scaling demand from the application.
Let's consider we have 5 node cluster and each node has data pressure of about 3 TB. Now as per sudden load, we want to add 1 node in the cluster as quick as possible. Please suggest what would be the fastest method to add the new node on cluster? Normal bootstrapping will definitely take time because it needs to stream at least 2.5 TB ( 5*3TB/6 nodes) from 5 nodes. Please consider multi-core machines & 10 Gpbs card . Streaming throughput can help but not much. The similar requirement can come when we want to replace the failed node due to any hardware. Please suggest any best practice or scenarios to deal with above situations. Scaling is good but how quickly we can scale is another thing to consider. -- *C*heers,* *Anshu V*
