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Reviewed:  https://review.openstack.org/527444
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=6efc498979ea6f12d71c4bd82af645f60d94af09
Submitter: Zuul
Branch:    master

commit 6efc498979ea6f12d71c4bd82af645f60d94af09
Author: Balazs Gibizer <balazs.gibizer@xxxxxxxxxxxx>
Date:   Tue Dec 12 16:56:08 2017 +0100

    Wait for live_migration_rollback.end notification
    
    The test_live_migration_abort step of the test_migration_actions
    notification sample test could randomly fail on the number of
    notification received. This happens becuase the test only waits for
    the live_migration_abort notification but then expect that also
    the live_migration_rollback notification is received. However the
    rollback notification is emited after the abort which sometimes
    makes the test fast enough to miss that.
    
    The patch adds an explicit wait for the rollback notification to
    stabilize the test
    
    Change-Id: I70d8f661fa75e7688e7e3cd527c9d1ee7415c50b
    Closes-Bug: #1737781


** Changed in: nova
       Status: In Progress => Fix Released

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https://bugs.launchpad.net/bugs/1737781

Title:
  test_live_migration_actions randomly fails with
  testtools.matchers._impl.MismatchError: 6 != 4

Status in OpenStack Compute (nova):
  Fix Released

Bug description:
  2017-12-07 12:58:50.750966 | ubuntu-xenial |
  2017-12-07 12:58:50.751001 | ubuntu-xenial | Captured traceback:
  2017-12-07 12:58:50.751036 | ubuntu-xenial | ~~~~~~~~~~~~~~~~~~~
  2017-12-07 12:58:50.751078 | ubuntu-xenial |     Traceback (most recent call last):
  2017-12-07 12:58:50.751150 | ubuntu-xenial |       File "nova/tests/functional/notification_sample_tests/test_instance.py", line 59, in test_live_migration_actions
  2017-12-07 12:58:50.751189 | ubuntu-xenial |         action(server)
  2017-12-07 12:58:50.751275 | ubuntu-xenial |       File "nova/tests/functional/notification_sample_tests/test_instance.py", line 141, in _test_live_migration_abort
  2017-12-07 12:58:50.751343 | ubuntu-xenial |         self.assertEqual(6, len(fake_notifier.VERSIONED_NOTIFICATIONS))
  2017-12-07 12:58:50.751441 | ubuntu-xenial |       File "/home/zuul/src/git.openstack.org/openstack/nova/.tox/functional/local/lib/python2.7/site-packages/testtools/testcase.py", line 411, in assertEqual
  2017-12-07 12:58:50.751496 | ubuntu-xenial |         self.assertThat(observed, matcher, message)
  2017-12-07 12:58:50.751583 | ubuntu-xenial |       File "/home/zuul/src/git.openstack.org/openstack/nova/.tox/functional/local/lib/python2.7/site-packages/testtools/testcase.py", line 498, in assertThat
  2017-12-07 12:58:50.751624 | ubuntu-xenial |         raise mismatch_error
  2017-12-07 12:58:50.751673 | ubuntu-xenial |     testtools.matchers._impl.MismatchError: 6 != 4

  Full log:
  http://logs.openstack.org/07/384807/88/gate/openstack-tox-functional/8e6efc1/job-output.txt#_2017-12-07_12_58_50_751673

  Logstash signature:
  http://logstash.openstack.org/#dashboard/file/logstash.json?query=message%3A%5C%22testtools.matchers._impl.MismatchError%3A%206%20!%3D%204%5C%22%20AND%20project%3A%5C%22openstack%2Fnova%5C%22

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