If your remove and re-add a single property index, you'll have to iterate
over all your entities reputting them. Single property indexes won't be
auto-rebuilt based on your model defs.

Robert


On Sep 1, 2011 1:59 PM, "Vivek Puri" <[email protected]> wrote:
>
> @Jason, you have to very careful about this change. Couple of years
> back, i had made similar change without doing complete homework as to
> where the columns are being used and ended up breaking the code in
> number of places. Since single column queries are only inside your
> code and if code base is large, there is potentially no way you can be
> sure about where all a particular column is being used. So, make is
> perfectly sure that you dont need the index before removing it.
>
> Also, once the index is set to false, it is not clear, if you decided
> you need the index back, what is going to happen in that case. Will
> GAE rebuild the index? If yes, i dont think it shows up on the indexes
> page if it is being rebuilt. So you can be pretty much in the dark as
> to what is going on.
>
>
>
> On Sep 1, 1:04 pm, Jason Collins <[email protected]> wrote:
> > "Just Datastore Writes alone is costing me more than before."
> >
> > We are seeing a massive, almost unexplainable, datastore write
> > operations number.
> >
> > Index writes count as a datastore write operation. I've recently
> > discovered (thanks Robert Kluin) that it's not just the indexes
> > mentioned in your index.yaml, but also the "per-attribute" indexes (2/
> > attribute: asc, desc).
> >
> > Currently wading through many, many models to set indexed=False....
> >
> > j
> >
> > On Aug 31, 6:45 pm, "Raymond C." <[email protected]> wrote:
> >
> >
> >
> >
> >
> >
> >
> > > Just Datastore Writes alone is costing me more than before.
>
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