Can you explain this further? I don't see any reference to key_name
in the sample code.
More importantly, to me, what's the cost differential between using
string representation of keys and key_names? I've been passing around
key_names to the browser because they're shorter, under the assumption
that the cost to get the corresponding key on the server side was
negligible.
On Apr 25, 9:02 am, Alkis Evlogimenos ('Αλκης Ευλογημένος)
<[email protected]> wrote:
> Doing it over the remote api means you are going to transfer all your data +
> transmission overhead over the wire. You are probably better off doing
> something like this on the server side through an admin protected handler.
>
> Also if you happen to know the keys of your data (you used key_name) your
> deletes are going to be a lot more efficient if you give db.delete a list of
> keys instead.
>
>
>
> On Sat, Apr 25, 2009 at 2:41 PM, Sri <[email protected]> wrote:
>
> > Hi,
>
> > Is there a way to completely erase the production data store?
>
> > Currently I am using a script like this via the remote api:
>
> > def delete_all_objects(obj_class):
> > num_del = 300
> > while True:
> > try:
> > objs = obj_class.all().fetch(1000)
> > num_objs = len(objs)
> > if num_objs == 0:
> > return
> > print "Deleting %d/%d objects of class %s" % (num_del,
> > num_objs, str(obj_class))
> > db.delete(objs[:num_del])
> > except Timeout:
> > print "Timeout error - continuing ..."
>
> > But with 30000 entities in the data store and another 3 million (yep
> > thats right) coming, doing a clear this way is extremely slow.
>
> > Any ideas?
>
> > cheers
> > Sri
>
> --
>
> Alkis
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