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[Bug 1200022] Re: Race condition with failover logic in BigSwitch plugin

To: yahoo-eng-team@xxxxxxxxxxxxxxxxxxx
From: Alan Pevec <1200022@xxxxxxxxxxxxxxxxxx>
Date: Thu, 08 Aug 2013 20:04:52 -0000
Reply-to: Bug 1200022 <1200022@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

** Changed in: neutron/grizzly
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1200022

Title:
  Race condition with failover logic in BigSwitch plugin

Status in OpenStack Neutron (virtual network service):
  Fix Released
Status in neutron grizzly series:
  Fix Released

Bug description:
  The failover logic modifies a list of servers as it iterates through
  them.

  https://github.com/openstack/neutron/blob/ee3fe4e836ca1c81e50a8324a9b5f982de4fa97f/neutron/plugins/bigswitch/plugin.py#L300

  If a thread fails for an unexpected exception, a server could get
  permanently removed from the failover pool.

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