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From Joe Stump <>
Subject Re: Custom partitioners
Date Sat, 10 Oct 2009 13:37:49 GMT
As I said in my email, it's a code test. Simply meant to test an  
applicant's skills during the hiring process.

I'm aware of OPP and COPP and choosing partitioners.


On Oct 10, 2009, at 7:02, Mark Robson <> wrote:

> 2009/10/10 Joe Stump <>
> I've got a guy doing a code test for us and he has some questions  
> about custom partitioners:
> Wondering if anyone could chime in.
> I'm curious as to why you don't just use the  
> OrderPreservingPartitioner and apply the transformation to the email  
> addresses in the application before you use them as keys.
> One of the problems with Cassandra is that you can only use one  
> partitioner for the whole cluster.
> When I've looked at using it, it has always been clear that key  
> choice is vital for range scans to be at all useful.
> Mark

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