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Posted to user@cassandra.apache.org by "Hiller, Dean" <De...@nrel.gov> on 2012/09/04 18:56:24 UTC

anyone know how to lookup non-continguous columns BUT for prefixes?

I have a row that is an index like so

Index row -> <value1>.<pk99>, <value1>.<pk20>, <value2>.<pk32>, <value2>.<pk7> , <value3>.<pk24>, <value4>.<pk54>, <value5>.<pk31>

I would like to get all of the pks for
<value2>   which are pk32 and pk7
And
<value4>   which are pk54

This is a trimmed down example of course.  I am thinking maybe I might just use the astyanax async to send out 500 requests instead.

Thanks,
Dean

Re: anyone know how to lookup non-continguous columns BUT for prefixes?

Posted by aaron morton <aa...@thelastpickle.com>.

It's not possible to get non contiguous column slices. 

> This is a trimmed down example of course.  I am thinking maybe I might just use the astyanax async to send out 500 requests instead.
Keep an eye on what happens on the server side. 
Sometimes less is more. 

Cheers

-----------------
Aaron Morton
Freelance Developer
@aaronmorton
http://www.thelastpickle.com

On 5/09/2012, at 4:56 AM, "Hiller, Dean" <De...@nrel.gov> wrote:

> I have a row that is an index like so
> 
> Index row -> <value1>.<pk99>, <value1>.<pk20>, <value2>.<pk32>, <value2>.<pk7> , <value3>.<pk24>, <value4>.<pk54>, <value5>.<pk31>
> 
> I would like to get all of the pks for
> <value2>   which are pk32 and pk7
> And
> <value4>   which are pk54
> 
> This is a trimmed down example of course.  I am thinking maybe I might just use the astyanax async to send out 500 requests instead.
> 
> Thanks,
> Dean
> 
>