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[Adam Gandelman <1246848@xxxxxxxxxxxxxxxxxx>]

** Also affects: nova/havana
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1246848

Title:
  VMWare: AssertionError: Trying to re-send() an already-triggered
  event.

Status in OpenStack Compute (Nova):
  Fix Released
Status in OpenStack Compute (nova) havana series:
  New
Status in The OpenStack VMwareAPI subTeam:
  In Progress

Bug description:
  When an exceptin occurs in _wait_for_task and a failure occurs, for
  example a file is requested and it does not exists then another
  exception is also thrown:

  013-10-31 10:49:52.617 WARNING nova.virt.vmwareapi.driver [-] In vmwareapi:_poll_task, Got this error Trying to re-send() an already-triggered event.
  2013-10-31 10:49:52.618 ERROR nova.openstack.common.loopingcall [-] in fixed duration looping call
  2013-10-31 10:49:52.618 TRACE nova.openstack.common.loopingcall Traceback (most recent call last):
  2013-10-31 10:49:52.618 TRACE nova.openstack.common.loopingcall   File "/opt/stack/nova/nova/openstack/common/loopingcall.py", line 78, in _inner
  2013-10-31 10:49:52.618 TRACE nova.openstack.common.loopingcall     self.f(*self.args, **self.kw)
  2013-10-31 10:49:52.618 TRACE nova.openstack.common.loopingcall   File "/opt/stack/nova/nova/virt/vmwareapi/driver.py", line 941, in _poll_task
  2013-10-31 10:49:52.618 TRACE nova.openstack.common.loopingcall     done.send_exception(excep)
  2013-10-31 10:49:52.618 TRACE nova.openstack.common.loopingcall   File "/usr/local/lib/python2.7/dist-packages/eventlet/event.py", line 208, in send_exception
  2013-10-31 10:49:52.618 TRACE nova.openstack.common.loopingcall     return self.send(None, args)
  2013-10-31 10:49:52.618 TRACE nova.openstack.common.loopingcall   File "/usr/local/lib/python2.7/dist-packages/eventlet/event.py", line 150, in send
  2013-10-31 10:49:52.618 TRACE nova.openstack.common.loopingcall     assert self._result is NOT_USED, 'Trying to re-send() an already-triggered event.'
  2013-10-31 10:49:52.618 TRACE nova.openstack.common.loopingcall AssertionError: Trying to re-send() an already-triggered event.
  2013-10-31 10:49:52.618 TRACE nova.openstack.common.loopingcall

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