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[Cedric Brandily <1520152@xxxxxxxxxxxxxxxxxx>]

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

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https://bugs.launchpad.net/bugs/1520152

Title:
  _allocate_vr_id not working as expected because of REPEATABLE READ
  transactions

Status in neutron:
  Fix Released

Bug description:
  The method _allocate_vr_id[1] uses the pattern:

   for count in range(MAX_ALLOCATION_TRIES):
     try:
       <select some candidates using a DB query>
       <try to allocate a candidate>
       return candidate
     except DBDuplicateEntry:
       pass

  Because of REPEATABLE READ transactions, the selected candidate is
  always the same, so if first try fails then next tries will also fail.


  [1] neutron.db.l3_hamode

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