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[OpenStack Infra <1695844@xxxxxxxxxxxxxxxxxx>]

Reviewed:  https://review.openstack.org/470798
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=a7c054c55153c44891b8d1b14f93f0e03777fa6c
Submitter: Jenkins
Branch:    master

commit a7c054c55153c44891b8d1b14f93f0e03777fa6c
Author: jianghua wang <jianghua.wang@xxxxxxxxxx>
Date:   Mon Jun 5 03:02:09 2017 +0100

    Fix the race condition with novnc
    
    The first RFP negotiation message potentially arrived
    earlier, in which case the message will be swallowed
    by the recv() which receive response for the http
    request. This commit is to ensure only the response
    is removed from the socket buffer, so it won't impact
    the following RFP negotiation.
    
    Change-Id: I100e140acbc2d981f7b98e12b3e9ae02844f41fd
    Closes-Bug: #1695844


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

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https://bugs.launchpad.net/bugs/1695844

Title:
  test_novnc failed with socket recv time

Status in OpenStack Compute (nova):
  Fix Released

Bug description:
  We observed race condition with novnc test. Failed rate is about 1/10.

  
  http://dd6b71949550285df7dc-dda4e480e005aaa13ec303551d2d8155.r49.cf1.rackcdn.com/72/463672/3/check/dsvm-tempest-neutron-network/849c338/run_tests.log

  ==============================
  Failed 1 tests - output below:
  ==============================

  tempest.api.compute.servers.test_novnc.NoVNCConsoleTestJSON.test_novnc[id-c640fdff-8ab4-45a4-a5d8-7e6146cbd0dc]
  ---------------------------------------------------------------------------------------------------------------

  Captured traceback:
  ~~~~~~~~~~~~~~~~~~~
      Traceback (most recent call last):
        File "tempest/api/compute/servers/test_novnc.py", line 172, in test_novnc
          self._validate_rfb_negotiation()
        File "tempest/api/compute/servers/test_novnc.py", line 84, in _validate_rfb_negotiation
          data = self._websocket.receive_frame()
        File "tempest/common/compute.py", line 282, in receive_frame
          header = self._recv(2)
        File "tempest/common/compute.py", line 273, in _recv
          data_from_socket = self._socket.recv(recv_size)
        File "/opt/stack/new/tempest/.tox/tempest/local/lib/python2.7/site-packages/fixtures/_fixtures/timeout.py", line 52, in signal_handler
          raise TimeoutException()
      fixtures._fixtures.timeout.TimeoutException

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