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[Launchpad Bug Tracker <1800601@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package glance - 2:17.0.0-0ubuntu4.1

---------------
glance (2:17.0.0-0ubuntu4.1) cosmic; urgency=medium

  * d/gbp.conf: Create stable/rocky branch.
  * d/p/fix-py3-recursion.patch: Cherry-picked from upstream master branch to
    fix error with infinite recursion under Python 3 (LP: #1800601).

 -- Corey Bryant <corey.bryant@xxxxxxxxxxxxx>  Wed, 31 Oct 2018 13:55:56
-0400

** Changed in: glance (Ubuntu Cosmic)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1800601

Title:
  [SRU] Infinite recursion in Python 3

Status in Ubuntu Cloud Archive:
  Fix Committed
Status in Ubuntu Cloud Archive rocky series:
  Fix Committed
Status in Glance:
  Fix Released
Status in glance package in Ubuntu:
  Fix Released
Status in glance source package in Cosmic:
  Fix Released
Status in glance source package in Disco:
  Fix Released

Bug description:
  Hi,

  When running unit tests under Python 3.7 when building the Rocky
  Debian package in Sid, I get a never ending recursion. Please see the
  Debian bug report:

  https://bugs.debian.org/911947

  Basically, it's this:

  |   File "/build/1st/glance-17.0.0/glance/domain/__init__.py", line 316, in keys
  |     return dict(self).keys()
  |   File "/build/1st/glance-17.0.0/glance/domain/__init__.py", line 316, in keys
  |     return dict(self).keys()
  |   File "/build/1st/glance-17.0.0/glance/domain/__init__.py", line 316, in keys
  |     return dict(self).keys()
  | RecursionError: maximum recursion depth exceeded while calling a Python object

  == Ubuntu SRU details ==

  [Impact]
  An infinite recursion error occurs when running Python 3.6 glance from rocky. This issue has also been seen when running python 3.7 unit tests.
  The error has also been seen in a Rocky deployment and causes the glance api service to return 500 errors.

  [Test Case]
  Bionic (cloud-archive): Deploy the glance charm on bionic then upgrade it to rocky by updating the openstack-origin to cloud:bionic-rocky/proposed
  Cosmic: Note that for cosmic we don't have the ability to test an upgrade from queens to rocky like we can on bionic so we'll just manually test the python3 code.

  [Regression Potential]
  Fairly low. The patch is a minimal fix and will be fully exercised by the OpenStack charms team.

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