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[rohita joshi <rohita.joshi@xxxxxxxxxxxxxxxxxx>]

** Project changed: keystone => swift

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https://bugs.launchpad.net/bugs/1567246

Title:
  Proxy server returning response code 404 instead of 503

Status in OpenStack Object Storage (swift):
  New

Bug description:
  On execution of create object metadata use case using following curl
  command, on an environment where container server is down,

  curl -i <public_url>/<container-name>/<object-name> -X POST -H "X
  -Auth-Token: <token>" -H "X-Object-Meta-<property name>: <value>"

  Http response code 404 is returned i.e., resource not found. While in
  logs container server refuses to connect with response code 503 i.e.,
  service unavailable. The proxy should return HTTP response 503 , as
  container services are stopped, hence unavailable. Response code 404
  mislead the user as it signifies that container server is working but
  the container, for which metadata is being created, is not found.

  Cause: After getting 503 from container server multiple times, proxy
  server send POST request to object server which responds with error
  code 404 i.e., requested object not found. This response is sent to
  the user which is not correct. Proxy server should return error code
  503, as the actual error is coming due to unavailability of Container
  server.

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