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[Chuck Short <chuck.short@xxxxxxxxxxxxx>]

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

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https://bugs.launchpad.net/bugs/1410777

Title:
  Floating IP ops lock wait timeout

Status in OpenStack Neutron (virtual network service):
  Won't Fix
Status in neutron juno series:
  Fix Released
Status in VMware NSX:
  Fix Committed

Bug description:
  Under heavy load floating IP operations can trigger a lock wait
  timeout, thus causing the operation itself to fail.

  The reason for the timeout is the usual untimely eventlet yield which
  can be triggered in many places during the operation. The chances of
  this happening are increased by the fact that _update_fip_assoc
  (called within a DB transaction) does several interactions with the
  NSX backend.

  Unfortunately it is not practical to change the logic of the plugin in
  a way such that _update_fip_assoc does not go to the backend anymore,
  especially because the fix would be so extensive that it would be
  hardly backportable. An attempt in this direction also did not provide
  a solution: https://review.openstack.org/#/c/138078/

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