On Mon, Feb 9, 2015 at 4:59 PM, Seth Edwards <s...@pubnub.com> wrote:
> We are choosing to double our cluster from six to twelve. I ran the token > generator. Based on what I read in the documentation, I expected to see the > same first six tokens and six new tokens. Instead I see almost the same > tokens but off by a few numbers. Is this expected? Should I change the > similar tokens to the new ones? Am I doing it wrong? > In your existing cluster, your first token is at 28356863910078205288614550619314017621, which ends in an odd number. You cannot therefore choose a new token which exactly bisects its range, because a node cannot own the token 28356863910078205288614550619314017621 /2 = 14178431955039102644307275309657008810.5 ... because tokens are integers. You will however notice that floor() of your current token divided by two is your new token (14178431955039102644307275309657008810). I would personally keep my existing 6 tokens and do the simple math myself of bisecting their ranges, not move my existing tokens around by one or two tokens. =Rob
