You're facing the exploding indexes problem.
You should never put more than 1 list properties in one composite index.
This problem is described in the GAE doc.
http://code.google.com/intl/fr-FR/appengine/docs/python/datastore/queriesan
dindexes.html#Big_Entities_and_Exploding_Indexes
On 24/09/10
I'm trying to implement a search based on a list of keywords (string).
The list is created based on the content of the objects' fields and i
use it when matching against a query text.
The problem is that i can't create indexes on App engine (i get Error
after about 30 mins, and i have to delete it)
