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[Ed Leafe <ed@xxxxxxxxx>]

Public bug reported:

Most of the methods that increase the generation for a resource provider
also update the value of `generation` in the object that calls it, but
there is one place where it was missing: the _set_allocations() method
of the AllocationList class. This resulted in some ResourceProvider
references having stale values for `generation`, which would cause a
ConcurrentUpdateDetected exception to be raised.

** Affects: nova
     Importance: Undecided
     Assignee: Ed Leafe (ed-leafe)
         Status: In Progress


** Tags: placement

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https://bugs.launchpad.net/bugs/1655761

Title:
  Resource Provider generation update missing

Status in OpenStack Compute (nova):
  In Progress

Bug description:
  Most of the methods that increase the generation for a resource
  provider also update the value of `generation` in the object that
  calls it, but there is one place where it was missing: the
  _set_allocations() method of the AllocationList class. This resulted
  in some ResourceProvider references having stale values for
  `generation`, which would cause a ConcurrentUpdateDetected exception
  to be raised.

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