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[Armando Migliaccio <1569404@xxxxxxxxxxxxxxxxxx>]

This is being reverted.

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

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https://bugs.launchpad.net/bugs/1569404

Title:
  Remove threading before process forking

Status in neutron:
  Confirmed

Bug description:
   Forking processes when a few threads are already running is
  potentially unsafe operation and could cause a lot of problems because
  only current thread will continue working in child thread. Any locked
  by other thread resource will remain locked forever.

  We faced with this problem during oslo.messaging development and added
  workaround to hide this problem:
  https://review.openstack.org/#/c/274255/ I tried to fix this problem
  in oslo.service: https://review.openstack.org/#/c/270832/ but oslo
  folks said that this fix is ugly and it is wrong way to add
  workarounds to common libraries because projects use them incorrectly.
  I think that is fare.

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