Heat stack delete using loadbalancer resource fails

Environment

• Red Hat OpenStack 5.0
• openstack-heat-engine-2014.1.2-1.1

Issue

• I tried to delete a stack but when i did it a get nothing else than: DELETE_FAILED
• Heat stack delete using loadbalancer resource fails

Resolution

This issue has been fixed with RHBA-2014-1930

Root Cause

Prior to this update, Orchestration (heat) did not expect partial deletion of OS::Neutron::LoadBalancer resources.
As a result, it was not possible to completely delete the resource if deletion previously failed after some members
had already been removed.
With this update, Orchestration is able to delete partially-deleted OS::Neutron::LoadBalancer resources. Consequently,
should resource deletion fail for any reason partially through the process, it can still be deleted in a subsequent attempt.

Diagnostic Steps

• heat engine.log :

2014-11-19 16:28:53.720 31094 INFO urllib3.connectionpool [-] Starting new HTTP connection (1): 192.168.20.12
2014-11-19 16:28:53.724 31094 ERROR heat.engine.resource [-] Delete LoadBalancer "loadbalancer" Stack "proxy" [10780734-79ef-431c-a277-8111e92d513c]
2014-11-19 16:28:53.724 31094 TRACE heat.engine.resource Traceback (most recent call last):
2014-11-19 16:28:53.724 31094 TRACE heat.engine.resource   File "/usr/lib/python2.7/site-packages/heat/engine/resource.py", line 707, in delete
2014-11-19 16:28:53.724 31094 TRACE heat.engine.resource     handle_data = self.handle_delete()
2014-11-19 16:28:53.724 31094 TRACE heat.engine.resource   File "/usr/lib/python2.7/site-packages/heat/engine/resources/neutron/loadbalancer.py", line 617, in handle_delete
2014-11-19 16:28:53.724 31094 TRACE heat.engine.resource     try:
2014-11-19 16:28:53.724 31094 TRACE heat.engine.resource   File "/usr/lib/python2.7/site-packages/heat/db/api.py", line 62, in resource_data_get
2014-11-19 16:28:53.724 31094 TRACE heat.engine.resource     return IMPL.resource_data_get(resource, key)
2014-11-19 16:28:53.724 31094 TRACE heat.engine.resource   File "/usr/lib/python2.7/site-packages/heat/db/sqlalchemy/api.py", line 157, in resource_data_get
2014-11-19 16:28:53.724 31094 TRACE heat.engine.resource     key)
2014-11-19 16:28:53.724 31094 TRACE heat.engine.resource   File "/usr/lib/python2.7/site-packages/heat/db/sqlalchemy/api.py", line 188, in resource_data_get_by_key
2014-11-19 16:28:53.724 31094 TRACE heat.engine.resource     raise exception.NotFound(_('No resource data found'))
2014-11-19 16:28:53.724 31094 TRACE heat.engine.resource NotFound: No resource data found
2014-11-19 16:28:53.724 31094 TRACE heat.engine.resource 

Upstream bug https://bugs.launchpad.net/heat/+bug/1381700

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