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From Zachary Zolton <zachary.zol...@gmail.com>
Subject Re: Multi-Step Map/Reduce?
Date Tue, 31 Mar 2009 03:49:58 GMT
I've been thinking, if there was just a reasonable way to replicate
another database with the output of a view, then you could just write
regular one-pass map/reduce views on the "derived" database.

That would seem to cause fewer ripples across the codebase.

On Mon, Mar 30, 2009 at 10:40 PM, Chris Anderson <jchris@apache.org> wrote:
> On Mon, Mar 30, 2009 at 6:48 PM, Zachary Zolton
> <zachary.zolton@gmail.com> wrote:
>> Devs,
>>
>> Has there been any discussion of using multiple rounds of map/reduce
>> for CouchDB views?
>>
>> If were possible, and the view could be indexed within acceptable
>> bounds of memory and processing time, I could see using it situations
>> where the current one-pass solution proves difficult or requires
>> multiple queries.
>
> I think the simplest way to add value would be to make a way to bounce
> a group_level reduce query to documents in another database. Then you
> could use views to sort them by value etc.
>
>>
>> Also, I tend to be daft, so I'd appreciate hearing if this idea is
>> silly or simply outside of the scope of CouchDB!
>>
>
>
> I think it sounds great.
>
> Chris
>
> --
> Chris Anderson
> http://jchrisa.net
> http://couch.io
>

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