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[Bug 1163552] Re: _error_out_instance_on_exception not playing well with eventlet

To: yahoo-eng-team@xxxxxxxxxxxxxxxxxxx
From: Thierry Carrez <thierry.carrez+lp@xxxxxxxxx>
Date: Wed, 29 May 2013 10:25:27 -0000
Reply-to: Bug 1163552 <1163552@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

** Changed in: nova
       Status: Fix Committed => Fix Released

** Changed in: nova
    Milestone: None => havana-1

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https://bugs.launchpad.net/bugs/1163552

Title:
  _error_out_instance_on_exception not playing well with eventlet

Status in OpenStack Compute (Nova):
  Fix Released
Status in OpenStack Compute (nova) grizzly series:
  Fix Released

Bug description:
  The _error_out_instnace_on_exception function in compute manager is
  supposed to reraise the original exception.

  Unfortunately, it sometimes attempts to raise `None`. The reason is
  that Eventlet clears the exception stack when switching green-threads,
  and the quotas call is outside the code to guard against that.

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