On 25/04/14 11:29, Clint Byrum wrote: > Also by loading the whole stack we've allowed resources to bleed into > other resource. Currently to read Metadata for a single item that > entails _a lot_ of queries to the database because we end up having to > load the entire stack. We can't continue that as stacks grow in size. As an aside, this changeset[1] results in a stack load requiring _one_ query instead of _a lot_. Clint's argument still stands though. [1] https://review.openstack.org/#/q/status:open+project:openstack/heat+branch:master+topic:bug/1306743,n,z