Manik,
Being new here, I'm not totally sure of JBoss' stance on including other libraries. Hadoop has a Murmur2 hash implementation that I have been using at work for a while with no problems. Just a thought.
-- Dave Marion
> From:
manik@jboss.org> Date: Thu, 13 Jan 2011 19:35:44 +0000
> To:
infinispan-dev@lists.jboss.org> Subject: [infinispan-dev] MurmurHash fixes
>
> Guys,
>
> The MurmurHash2 impl we have in 4.2.0 is buggy in that my translation from the original C source was faulty and it effectively hashes over just 31 bits instead of 32. It means the distribution result isn't as good as it could be.
>
> Now it isn't that easy for me to just *fix* this in 4.2.1, since it means keys mapped to nodes using 4.2.0 may not map to the same node in 4.2.1.
>
> So here is what I propose:
>
> 1) Fix it in 4.2.x as MurmurHash2A
> 2) Use MurmurHash2A by default, *unless* a config flag is provided that forces the use of MurmurHash2. (e.g., <hash function="MurmurHash2">)
>
> This will even give us the ability to use MurmurHash3 in 5.0 when we have it.
>
> WDYT?
>
> Cheers
> Manik
> --
> Manik Surtani
>
manik@jboss.org>
twitter.com/maniksurtani>
> Lead, Infinispan
>
http://www.infinispan.org>
>
>
>
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