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[Bug 1737781] [NEW] test_live_migration_actions randomly fails with testtools.matchers._impl.MismatchError: 6 != 4

 

Public bug reported:

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

** Affects: nova
     Importance: Undecided
     Assignee: Balazs Gibizer (balazs-gibizer)
         Status: In Progress


** Tags: notifications

** Tags added: notifications

** Changed in: nova
     Assignee: (unassigned) => Balazs Gibizer (balazs-gibizer)

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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):
  In Progress

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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