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Reviewed:  https://review.opendev.org/699213
Committed: https://git.openstack.org/cgit/openstack/neutron-tempest-plugin/commit/?id=bd0f3712e25413e6c5b1ed5c35ef6e1361d922a6
Submitter: Zuul
Branch:    master

commit bd0f3712e25413e6c5b1ed5c35ef6e1361d922a6
Author: Slawek Kaplonski <skaplons@xxxxxxxxxx>
Date:   Mon Dec 16 14:13:41 2019 +0000

    Fix intermittent port_forwarding test failures
    
    This test was failing from time to time on checking UDP port
    forwarding.
    The reason for that was that sometimes (for unknown for me reason)
    nc server spawned on guest vm wasn't run properly. Due to that there was
    no response from this nc server and test was failing.
    
    This patch changes that to use wait_until_true() helper and wait
    60 seconds to received msg. Every time it tries to receive message,
    first it tries also to spawn nc server on guest vm.
    
    This patch also reverts commit
    526f53722fc51eb1f9bdac957495518cbeae5e10.
    as port_forwarding test don't need to be marked as unstable anymore.
    
    Closes-Bug: #1850800
    
    Change-Id: I95d5ba02b2851a07e6e1a8a2bedfdce7d20f32fc


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

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https://bugs.launchpad.net/bugs/1850800

Title:
  UDP port forwarding test is failing often

Status in neutron:
  Fix Released

Bug description:
  Example of failure: https://5ff584e2dd4971153a4c-
  657b7e35529908ead783d281edf8093c.ssl.cf5.rackcdn.com/691640/1/check
  /neutron-tempest-plugin-scenario-
  openvswitch/7532e66/testr_results.html.gz

  Traceback (most recent call last):
    File "/opt/stack/tempest/.tox/tempest/lib/python3.6/site-packages/neutron_tempest_plugin/scenario/test_port_forwardings.py", line 116, in test_port_forwarding_to_2_servers
      self._test_udp_port_forwarding(servers)
    File "/opt/stack/tempest/.tox/tempest/lib/python3.6/site-packages/neutron_tempest_plugin/scenario/test_port_forwardings.py", line 101, in _test_udp_port_forwarding
      constants.PROTO_NAME_UDP))
    File "/opt/stack/tempest/.tox/tempest/lib/python3.6/site-packages/testtools/testcase.py", line 417, in assertIn
      self.assertThat(haystack, Contains(needle), message)
    File "/opt/stack/tempest/.tox/tempest/lib/python3.6/site-packages/testtools/testcase.py", line 498, in assertThat
      raise mismatch_error
  testtools.matchers._impl.MismatchError: 'tempest-server-2-326024201-UDP-test' not in ''

  Logstash query:
  http://logstash.openstack.org/#dashboard/file/logstash.json?query=message%3A%5C%22line%20101%2C%20in%20_test_udp_port_forwarding%5C%22

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