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[Miguel Angel Ajo <majopela@xxxxxxxxxx>]

** Changed in: neutron
       Status: Fix Released => Confirmed

** Changed in: neutron
   Importance: Undecided => Medium

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https://bugs.launchpad.net/bugs/1541742

Title:
  fullstack tests break when tearing down database

Status in neutron:
  Confirmed

Bug description:
  http://logs.openstack.org/41/265041/7/check/gate-neutron-dsvm-
  fullstack/8ac64cd/testr_results.html.gz

  Late runs fail with the same errors:

  Traceback (most recent call last):
    File "/opt/stack/new/neutron/.tox/dsvm-fullstack-constraints/local/lib/python2.7/site-packages/fixtures/fixture.py", line 125, in cleanUp
      return self._cleanups(raise_errors=raise_first)
    File "/opt/stack/new/neutron/.tox/dsvm-fullstack-constraints/local/lib/python2.7/site-packages/fixtures/callmany.py", line 88, in __call__
      reraise(error[0], error[1], error[2])
    File "/opt/stack/new/neutron/.tox/dsvm-fullstack-constraints/local/lib/python2.7/site-packages/fixtures/callmany.py", line 82, in __call__
      cleanup(*args, **kwargs)
    File "/opt/stack/new/neutron/.tox/dsvm-fullstack-constraints/local/lib/python2.7/site-packages/testresources/__init__.py", line 797, in tearDownResources
      resource[1].finishedWith(getattr(test, resource[0]), result)
    File "/opt/stack/new/neutron/.tox/dsvm-fullstack-constraints/local/lib/python2.7/site-packages/testresources/__init__.py", line 509, in finishedWith
      self._clean_all(resource, result)
    File "/opt/stack/new/neutron/.tox/dsvm-fullstack-constraints/local/lib/python2.7/site-packages/testresources/__init__.py", line 478, in _clean_all
      self.clean(resource)
    File "/opt/stack/new/neutron/.tox/dsvm-fullstack-constraints/local/lib/python2.7/site-packages/oslo_db/sqlalchemy/provision.py", line 127, in clean
      resource.database.engine)
    File "/opt/stack/new/neutron/.tox/dsvm-fullstack-constraints/local/lib/python2.7/site-packages/oslo_db/sqlalchemy/provision.py", line 263, in drop_all_objects
      self.impl.drop_all_objects(engine)
    File "/opt/stack/new/neutron/.tox/dsvm-fullstack-constraints/local/lib/python2.7/site-packages/oslo_db/sqlalchemy/provision.py", line 415, in drop_all_objects
      conn.execute(schema.DropConstraint(fkc))
    File "/opt/stack/new/neutron/.tox/dsvm-fullstack-constraints/local/lib/python2.7/site-packages/sqlalchemy/engine/base.py", line 914, in execute
      return meth(self, multiparams, params)
    File "/opt/stack/new/neutron/.tox/dsvm-fullstack-constraints/local/lib/python2.7/site-packages/sqlalchemy/sql/ddl.py", line 68, in _execute_on_connection
      return connection._execute_ddl(self, multiparams, params)
    File "/opt/stack/new/neutron/.tox/dsvm-fullstack-constraints/local/lib/python2.7/site-packages/sqlalchemy/engine/base.py", line 968, in _execute_ddl
      compiled
    File "/opt/stack/new/neutron/.tox/dsvm-fullstack-constraints/local/lib/python2.7/site-packages/sqlalchemy/engine/base.py", line 1146, in _execute_context
      context)
    File "/opt/stack/new/neutron/.tox/dsvm-fullstack-constraints/local/lib/python2.7/site-packages/sqlalchemy/engine/base.py", line 1337, in _handle_dbapi_exception
      util.raise_from_cause(newraise, exc_info)
    File "/opt/stack/new/neutron/.tox/dsvm-fullstack-constraints/local/lib/python2.7/site-packages/sqlalchemy/util/compat.py", line 200, in raise_from_cause
      reraise(type(exception), exception, tb=exc_tb)
    File "/opt/stack/new/neutron/.tox/dsvm-fullstack-constraints/local/lib/python2.7/site-packages/sqlalchemy/engine/base.py", line 1139, in _execute_context
      context)
    File "/opt/stack/new/neutron/.tox/dsvm-fullstack-constraints/local/lib/python2.7/site-packages/sqlalchemy/engine/default.py", line 450, in do_execute
      cursor.execute(statement, parameters)
    File "/opt/stack/new/neutron/.tox/dsvm-fullstack-constraints/local/lib/python2.7/site-packages/pymysql/cursors.py", line 146, in execute
      result = self._query(query)
    File "/opt/stack/new/neutron/.tox/dsvm-fullstack-constraints/local/lib/python2.7/site-packages/pymysql/cursors.py", line 296, in _query
      conn.query(q)
    File "/opt/stack/new/neutron/.tox/dsvm-fullstack-constraints/local/lib/python2.7/site-packages/pymysql/connections.py", line 819, in query
      self._affected_rows = self._read_query_result(unbuffered=unbuffered)
    File "/opt/stack/new/neutron/.tox/dsvm-fullstack-constraints/local/lib/python2.7/site-packages/pymysql/connections.py", line 1001, in _read_query_result
      result.read()
    File "/opt/stack/new/neutron/.tox/dsvm-fullstack-constraints/local/lib/python2.7/site-packages/pymysql/connections.py", line 1285, in read
      first_packet = self.connection._read_packet()
    File "/opt/stack/new/neutron/.tox/dsvm-fullstack-constraints/local/lib/python2.7/site-packages/pymysql/connections.py", line 945, in _read_packet
      packet_header = self._read_bytes(4)
    File "/opt/stack/new/neutron/.tox/dsvm-fullstack-constraints/local/lib/python2.7/site-packages/pymysql/connections.py", line 971, in _read_bytes
      data = self._rfile.read(num_bytes)
    File "/opt/stack/new/neutron/.tox/dsvm-fullstack-constraints/local/lib/python2.7/site-packages/pymysql/_socketio.py", line 59, in readinto
      return self._sock.recv_into(b)
    File "/opt/stack/new/neutron/.tox/dsvm-fullstack-constraints/local/lib/python2.7/site-packages/eventlet/greenio/base.py", line 353, in recv_into
      return self._recv_loop(self.fd.recv_into, buffer, nbytes, flags)
    File "/opt/stack/new/neutron/.tox/dsvm-fullstack-constraints/local/lib/python2.7/site-packages/eventlet/greenio/base.py", line 341, in _recv_loop
      self._read_trampoline()
    File "/opt/stack/new/neutron/.tox/dsvm-fullstack-constraints/local/lib/python2.7/site-packages/eventlet/greenio/base.py", line 312, in _read_trampoline
      timeout_exc=socket.timeout("timed out"))
    File "/opt/stack/new/neutron/.tox/dsvm-fullstack-constraints/local/lib/python2.7/site-packages/eventlet/greenio/base.py", line 201, in _trampoline
      mark_as_closed=self._mark_as_closed)
    File "/opt/stack/new/neutron/.tox/dsvm-fullstack-constraints/local/lib/python2.7/site-packages/eventlet/hubs/__init__.py", line 162, in trampoline
      return hub.switch()
    File "/opt/stack/new/neutron/.tox/dsvm-fullstack-constraints/local/lib/python2.7/site-packages/eventlet/hubs/hub.py", line 294, in switch
      return self.greenlet.switch()
    File "/opt/stack/new/neutron/.tox/dsvm-fullstack-constraints/local/lib/python2.7/site-packages/eventlet/hubs/hub.py", line 346, in run
      self.wait(sleep_time)
    File "/opt/stack/new/neutron/.tox/dsvm-fullstack-constraints/local/lib/python2.7/site-packages/eventlet/hubs/poll.py", line 85, in wait
      presult = self.do_poll(seconds)
    File "/opt/stack/new/neutron/.tox/dsvm-fullstack-constraints/local/lib/python2.7/site-packages/eventlet/hubs/epolls.py", line 62, in do_poll
      return self.poll.poll(seconds)
    File "/opt/stack/new/neutron/.tox/dsvm-fullstack-constraints/local/lib/python2.7/site-packages/fixtures/_fixtures/timeout.py", line 52, in signal_handler
      raise TimeoutException()
  IndexError: tuple index out of range

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