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[Thierry Carrez <thierry.carrez+lp@xxxxxxxxx>]

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

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https://bugs.launchpad.net/bugs/1259229

Title:
  Undesired migrate repository path caching.

Status in OpenStack Identity (Keystone):
  Triaged
Status in Oslo - a Library of Common OpenStack Code:
  Fix Released

Bug description:
  Oslo.db migration.py uses singleton to store defined
  `migrate.versioning.repository.Repository` instance containing
  migration repository path. Most of plugins have its own migrate repo.
  Usage of singleton in point of Repository instances causes implicit
  and unexpected behavior therefore as current Repository instance may
  contain inappropriate path to migrate repo.

  Solution: do not use singleton.

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