Re: VNode Streaming Math

2016-10-12 Thread Vladimir Yudovin
Hi, Calculation in general is very simple - each node keeps replication_factor/number_of_nodes part of data (number of replicas is spread over all nodes). I.e. If you have 100 nodes and replication factor is three each node keeps 0.03 of table size. But you can go even with more simple ap

VNode Streaming Math

2016-10-12 Thread Anubhav Kale
Hello, Suppose I have a 100 node ring, with num_tokens=32 (thus, 32 VNodes per physical machine). Assume this cluster has just one keyspace having one table. There are 10 SS Tables on each node, and size on disk is 10GB on each node. For simplicity, assume each SSTable is 1GB. Now, a node went