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From Patrik Modesto <patrik.mode...@gmail.com>
Subject Re: random partitioner and key scan
Date Thu, 19 Jul 2012 08:13:03 GMT
Hi Prasenjit,

I don't see the need to recalculate anything. One key has a one MD5
hash, it doesn't change. Just use the hash to select a node, than just
the plain key. Can you elaborate on the redistribution please?

Regards,
P.

On Thu, Jul 19, 2012 at 9:09 AM, prasenjit mukherjee
<prasen.bea@gmail.com> wrote:
> The probem could be while redistributing the tokens. In that case the
> hashes has to be recalculated on each fo the candidate node.
>
> -Thanks,
> Prasenjit
>
> On Thu, Jul 19, 2012 at 12:19 PM, Patrik Modesto
> <patrik.modesto@gmail.com> wrote:
>> Hi,
>>
>> I know that RandomPartitioner does MD5 of a key and the MD5 is then
>> used for key distribution AND key ordering. I was just wondering if
>> it's possible to have RandomPartitioner just for key distribution and
>> OrderedPartitioner just for per-node key ordering. That would solve
>> the often requested key scan feature.
>>
>> Regards,
>> Patrik

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