Juno gate jobs are broken due to stevedore

[Steven Hardy]

I thought there was a ML post about this, but I can't seem to find it atm.

The juno gate jobs have been failing like this:

2015-05-12 20:39:04.987 | Traceback (most recent call last):
2015-05-12 20:39:04.987 | File "heat/tests/test_ceilometer_alarm.py", line 367, in test_delete_alarm_not_found
2015-05-12 20:39:04.987 | self.stack = self.create_stack(template=json.dumps(t))
2015-05-12 20:39:04.987 | File "heat/tests/test_ceilometer_alarm.py", line 145, in create_stack
2015-05-12 20:39:04.988 | template = parser.Template(temp)
2015-05-12 20:39:04.988 | File "heat/engine/template.py", line 104, in __new__
2015-05-12 20:39:04.988 | TemplateClass = get_template_class(template)
2015-05-12 20:39:04.988 | File "heat/engine/template.py", line 71, in get_template_class
2015-05-12 20:39:04.988 | mgr = _get_template_extension_manager()
2015-05-12 20:39:04.988 | File "heat/engine/template.py", line 56, in _get_template_extension_manager
2015-05-12 20:39:04.988 | on_load_failure_callback=raise_extension_exception)
2015-05-12 20:39:04.988 | File "/home/jenkins/workspace/gate-heat-python26/.tox/py26/lib/python2.6/site-packages/stevedore/extension.py", line 92, in __init__
2015-05-12 20:39:04.988 | verify_requirements)
2015-05-12 20:39:04.988 | File "/home/jenkins/workspace/gate-heat-python26/.tox/py26/lib/python2.6/site-packages/stevedore/extension.py", line 170, in _load_plugins
2015-05-12 20:39:04.988 | self._on_load_failure_callback(self, ep, err)
2015-05-12 20:39:04.989 | File "heat/engine/template.py", line 60, in raise_extension_exception
2015-05-12 20:39:04.989 | raise TemplatePluginNotRegistered(name=ep.name, error=six.text_type(err))
2015-05-12 20:39:04.989 | TemplatePluginNotRegistered: Could not load AWSTemplateFormatVersion.2010-09-09: (stevedore 1.2.0 (/home/jenkins/workspace/gate-heat-python26/.tox/py26/lib/python2.6/site-packages), Requirement.parse('stevedore>=1.3.0'), set(['cliff']))

It'd be good if someone can provide any links to the story behind the root-cause of this, but dhellmann has provided this fix, which disables strict validation of requirements to work around the issue:

https://review.openstack.org/#/c/176171

[Steven Hardy (shardy)]

This appears to discuss the issue (thanks skraynev!):

https://openstack.nimeyo.com/1133/openstack-dev-pip-6-0-6-breaking-py2-jobs-bug-1407736

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/176171
Committed: https://git.openstack.org/cgit/openstack/heat/commit/?id=46fb19bb3a505c61f77c45f4545d518d138f88a7
Submitter: Jenkins
Branch: stable/juno

commit 46fb19bb3a505c61f77c45f4545d518d138f88a7
Author: Doug Hellmann <email address hidden>
Date: Wed Apr 22 04:21:36 2015 +0000

    Tell stevedore not to force verify requirements

    Disable the strict requirements checking in pkg_resources by telling
    stevedore to bypass it. This avoids issues with devstack configurations
    where the "wrong" version of a library is installed, even though it is
    functional.

    Closes-Bug: #1454572
    Change-Id: Idbdbdd2548ad39325d8058eb19ee398f732c2e44