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[Luigi Toscano <ltoscano@xxxxxxxxxx>]

Thanks to Matthew Treinish and Morgan Fainberg. the issue was analyzed
and properly fixed.

The version of oslo.serialization of python-keystoneclient from the stable/kilo branch and the one from keystone were not compatible. This was fixed by a new version of python-keystoneclient for kilo (1.3.2):
http://lists.openstack.org/pipermail/openstack-announce/2015-June/000406.html

The usage of the new client for kilo fixes the issue; the review which was failing is now working (and was merged):
https://review.openstack.org/#/c/195657/
http://logs.openstack.org/57/195657/1/gate/gate-grenade-dsvm/32036b3/logs/grenade.sh.txt.gz


For more details, see the channel logs:
http://eavesdrop.openstack.org/irclogs/%23openstack-qa/%23openstack-qa.2015-06-30.log.html#t2015-06-30T14:25:43

This bug has been properly assigned to python-keystoneclient (and
removed from horizon) for archiving purposes.

** No longer affects: horizon

** Also affects: python-keystoneclient
   Importance: Undecided
       Status: New

** No longer affects: grenade

** Changed in: python-keystoneclient
       Status: New => Fix Released

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https://bugs.launchpad.net/bugs/1470108

Title:
  Gate upgrade test juno->kilo fails on oslo.serialization dependency
  mismatch for keystonemiddleware

Status in Python client library for Keystone:
  Fix Released

Bug description:
  The juno->kilo upgrade tests fails during the installation of
  keystonemiddleware with a version conflict exception:

  2015-06-29 17:18:03.056 | + /usr/local/bin/keystone-manage db_sync
  2015-06-29 17:18:03.285 | Traceback (most recent call last):
  2015-06-29 17:18:03.285 |   File "/usr/local/bin/keystone-manage", line 4, in <module>
  2015-06-29 17:18:03.285 |     __import__('pkg_resources').require('keystone==2015.1.1.dev13')
  2015-06-29 17:18:03.285 |   File "/usr/local/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 3084, in <module>
  2015-06-29 17:18:03.286 |     @_call_aside
  2015-06-29 17:18:03.286 |   File "/usr/local/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 3070, in _call_aside
  2015-06-29 17:18:03.286 |     f(*args, **kwargs)
  2015-06-29 17:18:03.286 |   File "/usr/local/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 3097, in _initialize_master_working_set
  2015-06-29 17:18:03.287 |     working_set = WorkingSet._build_master()
  2015-06-29 17:18:03.287 |   File "/usr/local/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 653, in _build_master
  2015-06-29 17:18:03.287 |     return cls._build_from_requirements(__requires__)
  2015-06-29 17:18:03.287 |   File "/usr/local/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 666, in _build_from_requirements
  2015-06-29 17:18:03.287 |     dists = ws.resolve(reqs, Environment())
  2015-06-29 17:18:03.287 |   File "/usr/local/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 844, in resolve
  2015-06-29 17:18:03.287 |     raise VersionConflict(dist, req).with_context(dependent_req)
  2015-06-29 17:18:03.287 | pkg_resources.ContextualVersionConflict: (oslo.serialization 1.4.0 (/usr/local/lib/python2.7/dist-packages), Requirement.parse('oslo.serialization<=1.2.0,>=1.0.0'), set(['python-keystoneclient']))
  2015-06-29 17:18:03.297 | + die 61 'DB sync error'
  2015-06-29 17:18:03.297 | + local exitcode=1

  See for example: https://review.openstack.org/#/c/195657/
  http://logs.openstack.org/57/195657/1/gate/gate-grenade-dsvm/0443321/logs/grenade.sh.txt.gz

  Maybe it's a version issue in some keystone module, or maybe grenade
  does not upgrade the dependencies in the proper order.

  This error (currently masked by another set of failures which involve
  log storing on the gates) blocks the backport of patches to kilo at
  least for horizon.

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