Hi all,
We had a problem on the NAS where we couldn't write anymore. This problem was 
solved and I decided that I would profit to upgrade galaxy.
Now we have a problem where jobs do not get launched and the handler log shows 
a lot of error messages. The first error message is copied below. Afterwards it 
alternates between
 galaxy.jobs.handler ERROR 2015-04-07 15:58:24,959 Exception in monitor_step  
galaxy.jobs.runners ERROR 2015-04-07 15:58:23,542 Unhandled exception checking 
active jobs
with, mainly, the same error stack (second error message shown below).
Any idea what is going wrong?
My first impression is that it is trying to recuperate some job that galaxy 
believes is still running but the machine has been stopped and rebooted in the 
mean time.
Any help is welcome!
Cristian

galaxy.jobs.runners ERROR 2015-04-07 15:44:04,809 (27764) Unhandled exception 
calling queue_jobTraceback (most recent call last):  File 
"/home/galaxy/galaxy-dist/lib/galaxy/jobs/runners/__init__.py", line 97, in 
run_next    method(arg)  File 
"/home/galaxy/galaxy-dist/lib/galaxy/jobs/runners/drmaa.py", line 115, in 
queue_job    if not self.prepare_job( job_wrapper, include_metadata=True ):  
File "/home/galaxy/galaxy-dist/lib/galaxy/jobs/runners/__init__.py", line 140, 
in prepare_job    job_id = job_wrapper.get_id_tag()  File 
"/home/galaxy/galaxy-dist/lib/galaxy/jobs/__init__.py", line 794, in get_id_tag 
   return self.get_job().get_id_tag()  File 
"/home/galaxy/galaxy-dist/lib/galaxy/jobs/__init__.py", line 790, in get_job    
return self.sa_session.query( model.Job ).get( self.job_id )  File 
"/home/galaxy/galaxy-dist/eggs/SQLAlchemy-0.9.8-py2.7-linux-x86_64-ucs4.egg/sqlalchemy/orm/query.py",
 line 840, in get    return loading.load_on_ident(self, key)  File 
"/home/galaxy/galaxy-dist/eggs/SQLAlchemy-0.9.8-py2.7-linux-x86_64-ucs4.egg/sqlalchemy/orm/loading.py",
 line 231, in load_on_ident    return q.one()  File 
"/home/galaxy/galaxy-dist/eggs/SQLAlchemy-0.9.8-py2.7-linux-x86_64-ucs4.egg/sqlalchemy/orm/query.py",
 line 2395, in one    ret = list(self)  File 
"/home/galaxy/galaxy-dist/eggs/SQLAlchemy-0.9.8-py2.7-linux-x86_64-ucs4.egg/sqlalchemy/orm/query.py",
 line 2434, in __iter__    context = self._compile_context()  File 
"/home/galaxy/galaxy-dist/eggs/SQLAlchemy-0.9.8-py2.7-linux-x86_64-ucs4.egg/sqlalchemy/orm/query.py",
 line 2810, in _compile_context    entity.setup_context(self, context)  File 
"/home/galaxy/galaxy-dist/eggs/SQLAlchemy-0.9.8-py2.7-linux-x86_64-ucs4.egg/sqlalchemy/orm/query.py",
 line 3194, in setup_context    column_collection=context.primary_columns  File 
"/home/galaxy/galaxy-dist/eggs/SQLAlchemy-0.9.8-py2.7-linux-x86_64-ucs4.egg/sqlalchemy/orm/interfaces.py",
 line 466, in setup    strat.setup_query(context, entity, path, loader, 
adapter, **kwargs)  File 
"/home/galaxy/galaxy-dist/eggs/SQLAlchemy-0.9.8-py2.7-linux-x86_64-ucs4.egg/sqlalchemy/orm/strategies.py",
 line 1111, in setup_query    column_collection, parentmapper, 
chained_from_outerjoin  File 
"/home/galaxy/galaxy-dist/eggs/SQLAlchemy-0.9.8-py2.7-linux-x86_64-ucs4.egg/sqlalchemy/orm/strategies.py",
 line 1234, in _generate_row_adapter    use_mapper_path=True)  File 
"/home/galaxy/galaxy-dist/eggs/SQLAlchemy-0.9.8-py2.7-linux-x86_64-ucs4.egg/sqlalchemy/orm/util.py",
 line 364, in __init__    else mapper.with_polymorphic_mappers,  File 
"/home/galaxy/galaxy-dist/eggs/SQLAlchemy-0.9.8-py2.7-linux-x86_64-ucs4.egg/sqlalchemy/util/langhelpers.py",
 line 725, in __get__    obj.__dict__[self.__name__] = result = self.fget(obj)  
File 
"/home/galaxy/galaxy-dist/eggs/SQLAlchemy-0.9.8-py2.7-linux-x86_64-ucs4.egg/sqlalchemy/orm/mapper.py",
 line 1877, in _with_polymorphic_mappers    configure_mappers()  File 
"/home/galaxy/galaxy-dist/eggs/SQLAlchemy-0.9.8-py2.7-linux-x86_64-ucs4.egg/sqlalchemy/orm/mapper.py",
 line 2589, in configure_mappers    mapper._post_configure_properties()  File 
"/home/galaxy/galaxy-dist/eggs/SQLAlchemy-0.9.8-py2.7-linux-x86_64-ucs4.egg/sqlalchemy/orm/mapper.py",
 line 1694, in _post_configure_properties    prop.init()  File 
"/home/galaxy/galaxy-dist/eggs/SQLAlchemy-0.9.8-py2.7-linux-x86_64-ucs4.egg/sqlalchemy/orm/interfaces.py",
 line 144, in init    self.do_init()  File 
"/home/galaxy/galaxy-dist/eggs/SQLAlchemy-0.9.8-py2.7-linux-x86_64-ucs4.egg/sqlalchemy/orm/relationships.py",
 line 1549, in do_init    self._process_dependent_arguments()  File 
"/home/galaxy/galaxy-dist/eggs/SQLAlchemy-0.9.8-py2.7-linux-x86_64-ucs4.egg/sqlalchemy/orm/relationships.py",
 line 1605, in _process_dependent_arguments    self.target = 
self.mapper.mapped_table  File 
"/home/galaxy/galaxy-dist/eggs/SQLAlchemy-0.9.8-py2.7-linux-x86_64-ucs4.egg/sqlalchemy/util/langhelpers.py",
 line 725, in __get__    obj.__dict__[self.__name__] = result = self.fget(obj)  
File 
"/home/galaxy/galaxy-dist/eggs/SQLAlchemy-0.9.8-py2.7-linux-x86_64-ucs4.egg/sqlalchemy/orm/relationships.py",
 line 1522, in mapper    argument = self.argument()  File 
"/home/galaxy/galaxy-dist/eggs/SQLAlchemy-0.9.8-py2.7-linux-x86_64-ucs4.egg/sqlalchemy/ext/declarative/clsregistry.py",
 line 283, in __call__    (self.prop.parent, self.arg, n.args[0], 
self.cls)InvalidRequestError: When initializing mapper 
Mapper|Queue|kombu_queue, expression 'Message' failed to locate a name ("name 
'Message' is not defined"). If this is a class name, consider adding this 
relationship() to the <class 'kombu.transport.sqlalchemy.Queue'> class after 
both dependent classes have been defined.
Repeated error messages:galaxy.jobs.runners ERROR 2015-04-07 15:58:23,542 
Unhandled exception checking active jobsTraceback (most recent call last):  
File "/home/galaxy/galaxy-dist/lib/galaxy/jobs/runners/__init__.py", line 501, 
in monitor    self.check_watched_items()  File 
"/home/galaxy/galaxy-dist/lib/galaxy/jobs/runners/drmaa.py", line 238, in 
check_watched_items    galaxy_id_tag = ajs.job_wrapper.get_id_tag()  File 
"/home/galaxy/galaxy-dist/lib/galaxy/jobs/__init__.py", line 794, in get_id_tag 
   return self.get_job().get_id_tag()  File 
"/home/galaxy/galaxy-dist/lib/galaxy/jobs/__init__.py", line 790, in get_job    
return self.sa_session.query( model.Job ).get( self.job_id )  File 
"/home/galaxy/galaxy-dist/eggs/SQLAlchemy-0.9.8-py2.7-linux-x86_64-ucs4.egg/sqlalchemy/orm/scoping.py",
 line 150, in do    return getattr(self.registry(), name)(*args, **kwargs)  
File 
"/home/galaxy/galaxy-dist/eggs/SQLAlchemy-0.9.8-py2.7-linux-x86_64-ucs4.egg/sqlalchemy/orm/session.py",
 line 1165, in query    return self._query_cls(entities, self, **kwargs)  File 
"/home/galaxy/galaxy-dist/eggs/SQLAlchemy-0.9.8-py2.7-linux-x86_64-ucs4.egg/sqlalchemy/orm/query.py",
 line 108,in __init__    self._set_entities(entities)  File 
"/home/galaxy/galaxy-dist/eggs/SQLAlchemy-0.9.8-py2.7-linux-x86_64-ucs4.egg/sqlalchemy/orm/query.py",
 line 118,in _set_entities    self._set_entity_selectables(self._entities)  
File 
"/home/galaxy/galaxy-dist/eggs/SQLAlchemy-0.9.8-py2.7-linux-x86_64-ucs4.egg/sqlalchemy/orm/query.py",
 line 151,in _set_entity_selectables    ent.setup_entity(*d[entity])  File 
"/home/galaxy/galaxy-dist/eggs/SQLAlchemy-0.9.8-py2.7-linux-x86_64-ucs4.egg/sqlalchemy/orm/query.py",
 line 3036, in setup_entity    self._with_polymorphic = 
ext_info.with_polymorphic_mappers  File 
"/home/galaxy/galaxy-dist/eggs/SQLAlchemy-0.9.8-py2.7-linux-x86_64-ucs4.egg/sqlalchemy/util/langhelpers.py",
 line 725, in __get__    obj.__dict__[self.__name__] = result = self.fget(obj)  
File 
"/home/galaxy/galaxy-dist/eggs/SQLAlchemy-0.9.8-py2.7-linux-x86_64-ucs4.egg/sqlalchemy/orm/mapper.py",
 line 1877, in _with_polymorphic_mappers    configure_mappers()  File 
"/home/galaxy/galaxy-dist/eggs/SQLAlchemy-0.9.8-py2.7-linux-x86_64-ucs4.egg/sqlalchemy/orm/mapper.py",
 line 2586, in configure_mappers    raise eInvalidRequestError: One or more 
mappers failed to initialize - can't proceed with initialization of other 
mappers.  Original exception was: When initializing mapper 
Mapper|Queue|kombu_queue, expression 'Message' failed to locate a name ("name 
'Message' is not defined"). If this is a class name, consider adding this 
relationship() to the <class 'kombu.transport.sqlalchemy.Queue'> class after 
both dependent classes have been defined.                                       
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