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

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

** Changed in: cinder
    Milestone: None => juno-1

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https://bugs.launchpad.net/bugs/1289696

Title:
  request_id middleware uses wrong request ID value

Status in Cinder:
  Fix Released
Status in OpenStack Neutron (virtual network service):
  Fix Released
Status in Oslo - a Library of Common OpenStack Code:
  Fix Released

Bug description:
  The request_id middleware is designed to generate a request ID during
  process_request() and attach this value to the as an HTTP header
  during process_response(). Unfortunately, it stores the request ID
  value in a variable within the RequestIdMiddleware class. This
  violates the "shared nothing" rule, and can cause problems when
  several requests are run concurrently. For example, if requests A and
  B come in back-to-back, and A completes first, A will have B's request
  ID value in the HTTP response.

  This problem was discovered when running nova's
  api.compute.servers.test_instance_actions test in parallel while
  working on  https://review.openstack.org/#/c/66903/

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