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[Bug 1581111] [NEW] glance-cache-prefetcher causes Unknown Scheme errors

To: yahoo-eng-team@xxxxxxxxxxxxxxxxxxx
From: ldpcloud <ldipaola.despegar@xxxxxxxxx>
Date: Thu, 12 May 2016 16:01:10 -0000
Reply-to: Bug 1581111 <1581111@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
Public bug reported:

When trying to prefetch an image and running the glance-cache-prefetcher
(after succesfully queing it) I am getting the following error:

2016-05-12 11:37:08.215 24806 CRITICAL glance [req-625f99f7-c131-49bd-bbda-99676d56faf8 - - - - -] UnknownScheme: Unknown scheme 'swift+http' found in URI
2016-05-12 11:37:08.215 24806 TRACE glance Traceback (most recent call last):
2016-05-12 11:37:08.215 24806 TRACE glance   File "/usr/bin/glance-cache-prefetcher", line 10, in <module>
2016-05-12 11:37:08.215 24806 TRACE glance     sys.exit(main())
2016-05-12 11:37:08.215 24806 TRACE glance   File "/usr/lib/python2.7/dist-packages/glance/cmd/cache_prefetcher.py", line 56, in main
2016-05-12 11:37:08.215 24806 TRACE glance     app.run()
2016-05-12 11:37:08.215 24806 TRACE glance   File "/usr/lib/python2.7/dist-packages/glance/image_cache/prefetcher.py", line 79, in run
2016-05-12 11:37:08.215 24806 TRACE glance     successes = sum([1 for r in results if r is True])
2016-05-12 11:37:08.215 24806 TRACE glance   File "/usr/lib/python2.7/dist-packages/eventlet/greenpool.py", line 238, in next
2016-05-12 11:37:08.215 24806 TRACE glance     val = self.waiters.get().wait()
2016-05-12 11:37:08.215 24806 TRACE glance   File "/usr/lib/python2.7/dist-packages/eventlet/greenthread.py", line 175, in wait
2016-05-12 11:37:08.215 24806 TRACE glance     return self._exit_event.wait()
2016-05-12 11:37:08.215 24806 TRACE glance   File "/usr/lib/python2.7/dist-packages/eventlet/event.py", line 125, in wait
2016-05-12 11:37:08.215 24806 TRACE glance     current.throw(*self._exc)
2016-05-12 11:37:08.215 24806 TRACE glance   File "/usr/lib/python2.7/dist-packages/eventlet/greenthread.py", line 214, in main
2016-05-12 11:37:08.215 24806 TRACE glance     result = function(*args, **kwargs)
2016-05-12 11:37:08.215 24806 TRACE glance   File "/usr/lib/python2.7/dist-packages/glance/image_cache/prefetcher.py", line 58, in fetch_image_into_cache
2016-05-12 11:37:08.215 24806 TRACE glance     context=ctx)
2016-05-12 11:37:08.215 24806 TRACE glance   File "/usr/lib/python2.7/dist-packages/glance_store/backend.py", line 269, in get_from_backend
2016-05-12 11:37:08.215 24806 TRACE glance     loc = location.get_location_from_uri(uri, conf=CONF)
2016-05-12 11:37:08.215 24806 TRACE glance   File "/usr/lib/python2.7/dist-packages/glance_store/location.py", line 75, in get_location_from_uri
2016-05-12 11:37:08.215 24806 TRACE glance     raise exceptions.UnknownScheme(scheme=pieces.scheme)
2016-05-12 11:37:08.215 24806 TRACE glance UnknownScheme: Unknown scheme 'swift+http' found in URI

The Openstack Version is Kilo and Swift is used as glance storage
backend for images. There was a similar report in the past
(https://bugs.launchpad.net/glance/+bug/888383) but suppossed to be
fixed in essex.

** Affects: glance
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1581111

Title:
  glance-cache-prefetcher causes Unknown Scheme errors

Status in Glance:
  New

Bug description:
  When trying to prefetch an image and running the glance-cache-
  prefetcher (after succesfully queing it) I am getting the following
  error:

  2016-05-12 11:37:08.215 24806 CRITICAL glance [req-625f99f7-c131-49bd-bbda-99676d56faf8 - - - - -] UnknownScheme: Unknown scheme 'swift+http' found in URI
  2016-05-12 11:37:08.215 24806 TRACE glance Traceback (most recent call last):
  2016-05-12 11:37:08.215 24806 TRACE glance   File "/usr/bin/glance-cache-prefetcher", line 10, in <module>
  2016-05-12 11:37:08.215 24806 TRACE glance     sys.exit(main())
  2016-05-12 11:37:08.215 24806 TRACE glance   File "/usr/lib/python2.7/dist-packages/glance/cmd/cache_prefetcher.py", line 56, in main
  2016-05-12 11:37:08.215 24806 TRACE glance     app.run()
  2016-05-12 11:37:08.215 24806 TRACE glance   File "/usr/lib/python2.7/dist-packages/glance/image_cache/prefetcher.py", line 79, in run
  2016-05-12 11:37:08.215 24806 TRACE glance     successes = sum([1 for r in results if r is True])
  2016-05-12 11:37:08.215 24806 TRACE glance   File "/usr/lib/python2.7/dist-packages/eventlet/greenpool.py", line 238, in next
  2016-05-12 11:37:08.215 24806 TRACE glance     val = self.waiters.get().wait()
  2016-05-12 11:37:08.215 24806 TRACE glance   File "/usr/lib/python2.7/dist-packages/eventlet/greenthread.py", line 175, in wait
  2016-05-12 11:37:08.215 24806 TRACE glance     return self._exit_event.wait()
  2016-05-12 11:37:08.215 24806 TRACE glance   File "/usr/lib/python2.7/dist-packages/eventlet/event.py", line 125, in wait
  2016-05-12 11:37:08.215 24806 TRACE glance     current.throw(*self._exc)
  2016-05-12 11:37:08.215 24806 TRACE glance   File "/usr/lib/python2.7/dist-packages/eventlet/greenthread.py", line 214, in main
  2016-05-12 11:37:08.215 24806 TRACE glance     result = function(*args, **kwargs)
  2016-05-12 11:37:08.215 24806 TRACE glance   File "/usr/lib/python2.7/dist-packages/glance/image_cache/prefetcher.py", line 58, in fetch_image_into_cache
  2016-05-12 11:37:08.215 24806 TRACE glance     context=ctx)
  2016-05-12 11:37:08.215 24806 TRACE glance   File "/usr/lib/python2.7/dist-packages/glance_store/backend.py", line 269, in get_from_backend
  2016-05-12 11:37:08.215 24806 TRACE glance     loc = location.get_location_from_uri(uri, conf=CONF)
  2016-05-12 11:37:08.215 24806 TRACE glance   File "/usr/lib/python2.7/dist-packages/glance_store/location.py", line 75, in get_location_from_uri
  2016-05-12 11:37:08.215 24806 TRACE glance     raise exceptions.UnknownScheme(scheme=pieces.scheme)
  2016-05-12 11:37:08.215 24806 TRACE glance UnknownScheme: Unknown scheme 'swift+http' found in URI

  The Openstack Version is Kilo and Swift is used as glance storage
  backend for images. There was a similar report in the past
  (https://bugs.launchpad.net/glance/+bug/888383) but suppossed to be
  fixed in essex.

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