On Sat, 8 Sep 2018, 14:47 Jonathan Haddad, <j...@jonhaddad.com> wrote:
> 256 tokens is a pretty terrible default setting especially post 3.0. I > recommend folks use 4 tokens for new clusters, > I wonder why not setting it to all the way down to 1 then? What's the key difference once you have so few vnodes? with some caveats. > And those are? When you fire up a cluster, there's no way to make the initial tokens be > distributed evenly, you'll get random ones. You'll want to set them > explicitly using: > > python -c 'print( [str(((2**64 / 4) * i) - 2**63) for i in range(4)])' > > > After you fire up the first seed, create a keyspace using RF=3 (or > whatever you're planning on using) and set allocate_tokens_for_keyspace to > that keyspace in your config, and join the rest of the nodes. That gives > even distribution. > Do you possibly know if the DSE-style option which doesn't require a keyspace to be there also works to allocate evenly distributed tokens for the very first seed node? Thanks, -- Alex
