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[Hong Hui Xiao <honghui_xiao@xxxxxxxx>]

Public bug reported:

dragonflow replies on neutron revision to judge if an object has
updates. So dragonflow has a series of test cases to verify that neutron
revision works well.

After a recent change[1], an intermittent failure with high rate can be
observed in dragonflow jekins job [2]. The test will update name of
subnet and then verify that the revision of network increases.

This issue can't be reproduced from user interface. So, I create 2 UT[3]
to verify the issue. It looks like with a new context object, the issue
will not reproduce.


[1] https://review.openstack.org/#/c/435748
[2] http://logs.openstack.org/08/435208/1/check/gate-dragonflow-python35/d6ca0d0/testr_results.html.gz
[3]

** Affects: neutron
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1666749

Title:
  Update subnet will not bump network revision sometime

Status in neutron:
  New

Bug description:
  dragonflow replies on neutron revision to judge if an object has
  updates. So dragonflow has a series of test cases to verify that
  neutron revision works well.

  After a recent change[1], an intermittent failure with high rate can
  be observed in dragonflow jekins job [2]. The test will update name of
  subnet and then verify that the revision of network increases.

  This issue can't be reproduced from user interface. So, I create 2
  UT[3] to verify the issue. It looks like with a new context object,
  the issue will not reproduce.

  
  [1] https://review.openstack.org/#/c/435748
  [2] http://logs.openstack.org/08/435208/1/check/gate-dragonflow-python35/d6ca0d0/testr_results.html.gz
  [3]

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