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From Brian O'Neill <>
Subject Re: 1000's of column families
Date Tue, 02 Oct 2012 14:37:49 GMT

Brian O'Neill
Lead Architect, Software Development
Health Market Science
The Science of Better Results
2700 Horizon Drive € King of Prussia, PA € 19406
M: 215.588.6024 € @boneill42 <>  €

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On 10/2/12 9:55 AM, "Ben Hood" <> wrote:

>On Tue, Oct 2, 2012 at 2:20 PM, Brian O'Neill <> wrote:
>> Without putting too much thought into it...
>> Given the underlying architecture, I think you could/would have to write
>> your own partitioner, which would partition based on the prefix/virtual
>> keyspace.
>I might be barking up the wrong tree here, but looking at source of
>ColumnFamilyInputFormat, it seems that you can specify a KeyRange for
>the input, but only when you use an order preserving partitioner. So I
>presume that if you are using the RandomPartitioner, you are
>effectively doing a full CF scan (i.e. including all tenants in your

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