murano-engine throws exception 'Possible hang'

[Madhuri Kumari]

murano-engine throws below exception while start.

2016-01-06 17:59:33.061 127841 WARNING oslo_messaging.server [-] Possible hang: wait is waiting for stop to complete
2016-01-06 17:59:33.063 127841 DEBUG oslo_messaging.server [-] File "/usr/local/bin/murano-engine", line 10, in <module>
    sys.exit(main())
  File "/opt/stack/murano/murano/cmd/engine.py", line 53, in main
    launcher.wait()
  File "/usr/local/lib/python2.7/dist-packages/oslo_service/service.py", line 284, in wait
    status, signo = self._wait_for_exit_or_signal(ready_callback)
  File "/usr/local/lib/python2.7/dist-packages/oslo_service/service.py", line 262, in _wait_for_exit_or_signal
    super(ServiceLauncher, self).wait()
  File "/usr/local/lib/python2.7/dist-packages/oslo_service/service.py", line 207, in wait
    self.services.wait()
  File "/usr/local/lib/python2.7/dist-packages/oslo_service/service.py", line 640, in wait
    service.wait()
  File "/usr/local/lib/python2.7/dist-packages/oslo_messaging/server.py", line 251, in wrapper
    log_after, timeout_timer)
  File "/usr/local/lib/python2.7/dist-packages/oslo_messaging/server.py", line 150, in wait_for_completion
    msg, log_after, timeout_timer)
  File "/usr/local/lib/python2.7/dist-packages/oslo_messaging/server.py", line 115, in _wait
    LOG.debug(''.join(traceback.format_stack()))
 _wait /usr/local/lib/python2.7/dist-packages/oslo_messaging/server.py:115

[Kirill Zaitsev (kzaitsev)]

Can you please provide more details on how to reproduce the bug? As for now I'm only able to mark it as inclomplete.

[zehua (zehua)]

I also have the same issue, when start murano api with commend "murano-api --config-file ./etc/murano/murano.conf"

[Stan Lagun (slagun)]

looks like a duplicate of https://bugs.launchpad.net/murano/+bug/1521087
What version of OpenStack/Murano do you have? It might be that we need to backport the fix