I found there cannot be too much delete operation to a datastore. it
will take a whole day for server to "consume" the changes. there must
be some hidden quota.

On Mar 23, 4:38 pm, djidjadji <djidja...@gmail.com> wrote:
> It probably is a Datastore timeout. If you retry it mostly works.
>
> 2009/3/23 neoedmund <neoedm...@gmail.com>:
>
>
>
> > why this happens?
>
> > a model has 100,000+ entries in it.
> > q=Foo.all()
> > e=q.get()
>
> > error occurs:
>
> >  File "/base/python_lib/versions/1/google/appengine/ext/db/
> > __init__.py", line 1346, in get
> >    results = self.fetch(1)
> >  File "/base/python_lib/versions/1/google/appengine/ext/db/
> > __init__.py", line 1390, in fetch
> >    raw = self._get_query().Get(limit, offset)
> >  File "/base/python_lib/versions/1/google/appengine/api/datastore.py"
> > , line 942, in Get
> >    return self._Run(limit, offset)._Next(limit)
> >  File "/base/python_lib/versions/1/google/appengine/api/datastore.py"
> > , line 886, in _Run
> >    _ToDatastoreError(err)
> >  File "/base/python_lib/versions/1/google/appengine/api/datastore.py"
> > , line 1965, in _ToDatastoreError
> >    raise errors[err.application_error](err.error_detail)
> > Timeout
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