There is no desc index on __key__. Each indexed property has an asc and desc index on it but that doesn't apply for keys.
- alkis On Wed, Jun 9, 2010 at 12:39 AM, Jason C <[email protected]> wrote: > I'm attempting to use mapreduce for app engine as presented at I/O > 2010. > > I just noticed the following warning message in our logs (on / > mapreduce/command/start_job): > > Cannot create accurate approximation of keyspace, guessing instead. > Please address this problem: no matching index found. > This query needs this index: > - kind: AccountKeyword > properties: > - name: __key__ > direction: desc > > This seems to suggest that there is no (desc) index for the key of our > Model. However, isn't this created automatically? Indeed, I can't even > think of a way to _not_ have it created (i.e., I can't think of a way > to specify indexed=False for the key). > > Is this an error in reporting, or is something very wrong with our > Datastore? > > Thanks, > j > > -- > You received this message because you are subscribed to the Google Groups > "Google App Engine" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]<google-appengine%[email protected]> > . > For more options, visit this group at > http://groups.google.com/group/google-appengine?hl=en. > > -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.
