Comment 0 for bug 1438915

Currently, when deleting a domain, all projects inside that domain are also deleted. When we have a hierarchy of projects this may cause inconsistencies since the operations are not atomic [1] (each level of the hierarchy is deleted in a separate transaction).

Two possible solutions to explore are:
1 - Use the concept of logical deletion
2 - As a first step list all project's id to be deleted and trigger one delete transaction with all ids

[1] https://github.com/openstack/keystone/blob/master/keystone/resource/core.py#L470-L498