Here's the detailed description of mentioned indexes:
 1) address (string, < 100 bytes), tradePoint(String, < 100 bytes),
user (Key, generated by GAE), timestamp
 2) tradePoint, user, timestamp
 3) user, timestamp

Entities count is about 15k. I don't understand how it might happened.

On Feb 8, 3:25 pm, "Nick Johnson (Google)" <[email protected]>
wrote:
> Hi Pavel,
>
> That depends on the nature of your indexes, and the entities being indexed.
> It's certainly possible for indexes to reach this magnitude - particularly
> if you're indexing list properties.
>
> -Nick Johnson
>
>
>
>
>
> On Mon, Feb 8, 2010 at 1:12 PM, Pavel Kaplin <[email protected]> wrote:
> > It's hard to believe that 3 indexes (for 2, 3 and 4 fields) could eat
> > 9x more space than data itself.
>
> > On Feb 8, 2:45 pm, "Nick Johnson (Google)" <[email protected]>
> > wrote:
> > > Hi Pavel,
>
> > > The datastore stats include only the raw size of the entities. The total
> > > space consumed is the space consumed by the entities, plus the space
> > > consumed by all your indexes.
>
> > > -Nick Johnson
>
> > > On Mon, Feb 8, 2010 at 12:35 PM, Pavel Kaplin <[email protected]
> > >wrote:
>
> > > > Hi there!
>
> > > > My datastore stats says me "Size of all entities = 51 MBytes", but
> > > > dashboard shows 0.54 Gb as Total Stored Data.
>
> > > > As you can see, these values differ from each other for more than ten
> > > > times. Why?
>
> > > > Application id is bayadera-tracker
>
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> Google Ireland Ltd. :: Registered in Dublin, Ireland, Registration Number:
> 368047

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