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Subject: Re: [MTT devel] MTT GDS -- one more...
From: Mike Dubman (mike.ompi_at_[hidden])
Date: 2010-02-21 05:52:16


On Fri, Feb 12, 2010 at 6:44 PM, Jeff Squyres <jsquyres_at_[hidden]> wrote:

> > > 2. In reading through the Google Appengine docs, the GDS stuff looks
> like
> > we mainly can access the data through GQL. I don't see any mention of
> doing
> > map/reduce kinds of computations (Ethan and I were talking on the phone
> > today about MTT Appengine possibilities). I'm new to all this stuff, so
> > it's quite possible that a) I missed it, or b) I just don't understand
> what
> > I'm seeing/reading yet. Or does GQL do map/reduce on the back end to do
> its
> > magic? Is GQL the main/only way we have to access GDS?
> >
> > As far as I and Igor know there are no way of doing Map/Reduce with GDS.
> And
> > GQL (or filters which is practically synonym) is the main and only way to
> > access GDS data.
>

btw, afaik - the gds is using mapreduce explicitly on the backend - one
needs do nothing in order to ENABLE it: just use their API and the framework
will do the rest.