Completion of App Engine Index Writes (Python)
No, it is done asynchronously and you are not able to control this process. Hooks available only for by key gets, not for index queries. Try to build your datastore with parent-child relationships, so you can do ancestor queries, they are always consistent.
Is there a way to know / detect if an object (after being put to the datastore) has been written to an index i.e. object would be visible in a relevant query? Maybe something like a hook method?
Thanks!