[openstack-dev] sqlalchemy 0.8 and Grizzly: heat and cinder failing

Thomas Goirand zigo at debian.org
Tue Jul 9 16:46:14 UTC 2013

On 07/08/2013 08:32 PM, Sean Dague wrote:
> On 07/08/2013 04:50 AM, Mark McLoughlin wrote:
>> On Mon, 2013-07-08 at 15:53 +0800, Thomas Goirand wrote:
>>> Hi,
>>> Since python-sqlalchemy 0.8.2 has been uploaded to Sid, Quantum is
>>> uninstallable there right now (see #715294).
>>> I am wondering: what's wrong with sqlalchemy >= 0.8, so that it is
>>> written explicitly in the requirements that we shouldn't use it? Is
>>> there a chance that having such a version of sqlalchemy will make all of
>>> OpenStack grizzly fail? What are the consequences? Would it be safe to
>>> simply patch the requirements file and ignore this?
>> Don't really have a comment on the specifics, but ...
> The history of the 0.8 cap was the fact that 0.8beta1 (or something
> equiv) was uploaded near a freeze point. <0.8 didn't stop 0.8beta1 from
> being used (go version numbers).
> Also in 0.8 a piece was spun out as a separate library (I don't remember
> exactly which), which causes some build fails. Because it was around a
> freeze the cap was the right approach.
> However, projects really should be getting themselves on 0.8 in the
> Havana time frame. AFAIK it's really minor changes to work, so should be
> a simple review to bump it up.
>     -Sean

Indeed, most projects seem to work with the new SQLAlchemy. Though heat
fails with a python crash dump:

line 32, in <module>
    class Json(types.TypeDecorator, types.MutableType):
AttributeError: 'module' object has no attribute 'MutableType'

Indeed, MutableType is gone in SQLAlchemy >= 0.8. I'm therefore unsure
what to do to fix the heat package in Sid... :(
Any help would be appreciated.

There's also a big problem with Cinder:

  File "/usr/lib/python2.7/dist-packages/migrate/versioning/schema.py",
line 91, in runchange
    change.run(self.engine, step)
"/usr/lib/python2.7/dist-packages/migrate/versioning/script/py.py", line
145, in run
line 42, in upgrade
TypeError: __init__() got an unexpected keyword argument 'assert_unicode'

Unit tests aren't run at all, and cinder refuses to install (because I'm
doing the db_sync in the postinst, which fails).

Help there would also be appreciated.

AFAICT, these are the only packages affected by the SQLAlchemy upgrade.


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