Hey, num_tokens is tokens per node.
So in your case you would have 15 vnodes altogether. Cheers, Hannu > On 15. Jun 2022, at 10.08, Luca Rondanini <luca.rondan...@gmail.com> wrote: > > Hi all, > > I'm just trying to understand better how cassandra works. > > My understanding is that, once set, the number of vnodes does not change in a > cluster. The partitioner allocates vnodes to nodes ensuring replication data > are not stored on the same node. > > But what happens if there are more nodes than vnodes? If I set num_tokens to > 3 and I have 5 servers? Unless the partitioner adds vnodes and moves data > around but it seems an extremely expensive operation. I'm sure I'm missing > something, I'm not quite sure what! :) > > Thanks, > Luca >
