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[OpenStack Infra <1622996@xxxxxxxxxxxxxxxxxx>]

Reviewed:  https://review.openstack.org/369382
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=6e0b8c176cfc68a9e034019a0893c8c8fbf50015
Submitter: Jenkins
Branch:    master

commit 6e0b8c176cfc68a9e034019a0893c8c8fbf50015
Author: Kevin Benton <kevin@xxxxxxxxxx>
Date:   Tue Sep 13 02:06:28 2016 -0700

    Ensure there are fdb_entries before iterating
    
    _get_agent_fdb may return None so we need to check for
    that before we try to iterate over a key inside of it
    in delete_port_postcommit.
    
    Closes-Bug: #1622996
    Change-Id: I2256df0e08380e550f32248fb9589ee43b0923ff


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

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https://bugs.launchpad.net/bugs/1622996

Title:
  l2pop delete_port_postcommit spam

Status in neutron:
  Fix Released

Bug description:
  Gate multinode runs filled with this:

  'l2population' failed in delete_port_postcommit
  2016-09-13 10:13:34.066 16443 ERROR neutron.plugins.ml2.managers Traceback (most recent call last):
  2016-09-13 10:13:34.066 16443 ERROR neutron.plugins.ml2.managers   File "/opt/stack/new/neutron/neutron/plugins/ml2/managers.py", line 433, in _call_on_drivers
  2016-09-13 10:13:34.066 16443 ERROR neutron.plugins.ml2.managers     getattr(driver.obj, method_name)(context)
  2016-09-13 10:13:34.066 16443 ERROR neutron.plugins.ml2.managers   File "/opt/stack/new/neutron/neutron/plugins/ml2/drivers/l2pop/mech_driver.py", line 80, in delete_port_postcommit
  2016-09-13 10:13:34.066 16443 ERROR neutron.plugins.ml2.managers     fdb_entries[network_id]['ports'] = other_fdb_ports
  2016-09-13 10:13:34.066 16443 ERROR neutron.plugins.ml2.managers TypeError: 'NoneType' object has no attribute '__getitem__'
  2016-09-13 10:13:34.066 16443 ERROR neutron.plugins.ml2.managers 
  2016-09-13 10:13:34.083 16443 ERROR neutron.plugins.ml2.plugin [req-6b8a08b6-76ae-42fd-a8fb-0c2ac4b

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