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[Balazs Gibizer <1978817@xxxxxxxxxxxxxxxxxx>]

Public bug reported:


Traceback (most recent call last):
  File "/home/zuul/src/opendev.org/openstack/nova/nova/tests/unit/compute/test_virtapi.py", line 310, in test_wait_for_instance_event_multiple_events
    mock_log.warning.assert_called_once_with(
  File "/home/zuul/src/opendev.org/openstack/nova/.tox/py39/lib/python3.9/site-packages/mock/mock.py", line 926, in assert_called_once_with
    return self.assert_called_with(*args, **kwargs)
  File "/home/zuul/src/opendev.org/openstack/nova/.tox/py39/lib/python3.9/site-packages/mock/mock.py", line 913, in assert_called_with
    raise AssertionError(_error_message()) from cause
AssertionError: expected call not found.
Expected: warning('Timeout waiting for %(events)s for instance with vm_state %(vm_state)s and task_state %(task_state)s. Event states are: %(event_states)s', {'events': ['received-event', 'early-event', 'missing-event', 'received-but-not-waited-event', 'missing-but-not-waited-event'], 'vm_state': sentinel.vm_state, 'task_state': sentinel.task_state, 'event_states': 'received-event: received after waiting 0.00 seconds, early-event: received early, missing-event: timed out after 0.00 seconds, received-but-not-waited-event: received but not processed, missing-but-not-waited-event: expected but not received'}, instance=<Mock name='mock.instance' id='140120239250208'>)
Actual: warning('Timeout waiting for %(events)s for instance with vm_state %(vm_state)s and task_state %(task_state)s. Event states are: %(event_states)s', {'events': ['received-event', 'early-event', 'missing-event', 'received-but-not-waited-event', 'missing-but-not-waited-event'], 'vm_state': sentinel.vm_state, 'task_state': sentinel.task_state, 'event_states': 'received-event: received after waiting 0.02 seconds, early-event: received early, missing-event: timed out after 0.00 seconds, received-but-not-waited-event: received but not processed, missing-but-not-waited-event: expected but not received'}, instance=<Mock name='mock.instance' id='140120239250208'>)


The key difference is timing "waiting 0.02 seconds" vs "waiting 0.00 seconds"

Example run:
https://zuul.opendev.org/t/openstack/build/1c15873a574d402ca8364e5eaf7145b9

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


** Tags: gate-failure

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

** Tags added: gate-failure

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https://bugs.launchpad.net/bugs/1978817

Title:
  The test_wait_for_instance_event_multiple_events unit test is unstable

Status in OpenStack Compute (nova):
  New

Bug description:

  
  Traceback (most recent call last):
    File "/home/zuul/src/opendev.org/openstack/nova/nova/tests/unit/compute/test_virtapi.py", line 310, in test_wait_for_instance_event_multiple_events
      mock_log.warning.assert_called_once_with(
    File "/home/zuul/src/opendev.org/openstack/nova/.tox/py39/lib/python3.9/site-packages/mock/mock.py", line 926, in assert_called_once_with
      return self.assert_called_with(*args, **kwargs)
    File "/home/zuul/src/opendev.org/openstack/nova/.tox/py39/lib/python3.9/site-packages/mock/mock.py", line 913, in assert_called_with
      raise AssertionError(_error_message()) from cause
  AssertionError: expected call not found.
  Expected: warning('Timeout waiting for %(events)s for instance with vm_state %(vm_state)s and task_state %(task_state)s. Event states are: %(event_states)s', {'events': ['received-event', 'early-event', 'missing-event', 'received-but-not-waited-event', 'missing-but-not-waited-event'], 'vm_state': sentinel.vm_state, 'task_state': sentinel.task_state, 'event_states': 'received-event: received after waiting 0.00 seconds, early-event: received early, missing-event: timed out after 0.00 seconds, received-but-not-waited-event: received but not processed, missing-but-not-waited-event: expected but not received'}, instance=<Mock name='mock.instance' id='140120239250208'>)
  Actual: warning('Timeout waiting for %(events)s for instance with vm_state %(vm_state)s and task_state %(task_state)s. Event states are: %(event_states)s', {'events': ['received-event', 'early-event', 'missing-event', 'received-but-not-waited-event', 'missing-but-not-waited-event'], 'vm_state': sentinel.vm_state, 'task_state': sentinel.task_state, 'event_states': 'received-event: received after waiting 0.02 seconds, early-event: received early, missing-event: timed out after 0.00 seconds, received-but-not-waited-event: received but not processed, missing-but-not-waited-event: expected but not received'}, instance=<Mock name='mock.instance' id='140120239250208'>)

  
  The key difference is timing "waiting 0.02 seconds" vs "waiting 0.00 seconds"

  Example run:
  https://zuul.opendev.org/t/openstack/build/1c15873a574d402ca8364e5eaf7145b9

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