Hello Everyone, Datastax recommends num_tokens = 8 as a sensible default, rather than num_tokens = 256:
https://docs.datastax.com/en/dse/5.1/dse-dev/datastax_enterprise/config/configVnodes.html <https://docs.datastax.com/en/dse/5.1/dse-dev/datastax_enterprise/config/configVnodes.html> … but then I see stories like this (unbalanced cluster when using num_tokens=12), which are very concerning: https://danielparker.me/cassandra/vnodes/tokens/increasing-vnodes-cassandra/ <https://danielparker.me/cassandra/vnodes/tokens/increasing-vnodes-cassandra/> We’re currently running 3.0.x, 3 nodes, RF=3, num_tokens=256, spinning disks, soon to be 2 DCs. My guess is that our cluster will probably not grow beyond 10 nodes (10 TB?) I’d like to minimize the chance of hitting a roadblock down the road due to having num_tokens set inappropriately. We can change this right now pretty easily (our dataset is small but growing). Should we switch from 256 to 8? 32? Has anyone had num_tokens = 8 (or similarly small number) and experienced growing pains? What do you think the recommended setting should be? Thanks for the advice. :-) - Max
