Last time I checked, the current map-reduce implementation doesn't support queries -- so you'd have to map over all of your data adding labels to the entities that match. I would rather use tasks + cursors personally. If you have a query to get the list of posts just use 'chained' tasks that pass a cursor to the next task after querying for their posts. If you have a big list of post ids / keys, then split them into batches and insert a task to process each batch. Either method can be made to run extremely fast.
On Thu, Apr 14, 2011 at 23:06, nischalshetty <[email protected]> wrote: > @barryhunter > Thank you so much for your reply. I would need to often apply a particular > label to say a thousand posts. > Would you still suggest I go with this approach and may be run a map reduce > to update the 1000 records? It would be frequently done by all the users, > would that be ok? > -N > > -- > 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. > -- 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.
