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From "Coe, Robin" <>
Subject RE: Configuring Cassandra
Date Wed, 09 Dec 2009 01:32:50 GMT
>2**127 is correct (since MD5 is a 128-bit hash).

Ya, I had just thought that the initial token was interpreted by Cassandra's interpreter as
the exponent, not as a literal value.


-----Original Message-----
From: Jonathan Ellis [] 
Sent: December 8, 2009 8:28 PM
Subject: Re: Configuring Cassandra

On Tue, Dec 8, 2009 at 7:05 PM, Coe, Robin <> wrote:
> I'd love to see this document grow as time permits, to include known
> caveats, hidden features, tweaks, etc.  Perhaps, with some common use
> cases to help elucidate the content?

My writing well is exhausted for now but that's the nice thing about wikis... :)

> One question, though.  I thought I read about using an initial token for
> a RandmizedPartioner of between 0 and 127, but in your write-up, you say
> the value should be i * (2**127 / N) for i = 1 .. N.  That's a slightly
> larger number.  Can you clarify?

2**127 is correct (since MD5 is a 128-bit hash).

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