Cloned from launchpad blueprint https://blueprints.launchpad.net/ceilometer/+spec/paginate-db-search.

Description:

Instead of returning all the large amount of data as a whole from db, we need to paginate the return objects.

The sqlalchemy backend in oslo already has this kind of capability, so we need to rebase our sqlalchemy implementation on oslo's sqlalchemy to leverage that.

We also need to add this feature for mongoDB and HBase.

Specification URL (additional information):

None