This was the stack i had in runcpserver.log when someone browsed to /jobsub :
[23/Sep/2013 02:07:03 +0000] middleware INFO Processing exception: get() returned more than one Link -- it returned 2! Lookup parameters were {'name': 'to', 'parent': <Start: start>}: Traceback (most recent call last):
File "/usr/share/hue/build/env/lib/python2.6/site-packages/Django-1.2.3-py2.6.egg/django/core/handlers/base.py", line 100, in get_response
response = callback(request, *callback_args, **callback_kwargs)
File "/usr/share/hue/apps/jobsub/src/jobsub/views.py", line 103, in list_designs
'designs': _list_designs(request, owner, name)
File "/usr/share/hue/apps/jobsub/src/jobsub/views.py", line 79, in _list_designs
'node_type': design.start.get_child('to').node_type,
File "/usr/share/hue/apps/oozie/src/oozie/models.py", line 597, in get_child
return self.get_link(name).child.get_full_node()
File "/usr/share/hue/apps/oozie/src/oozie/models.py", line 590, in get_link
return Link.objects.exclude(name__in=Link.META_LINKS).get(parent=self, name=name)
File "/usr/share/hue/build/env/lib/python2.6/site-packages/Django-1.2.3-py2.6.egg/django/db/models/query.py", line 343, in get
% (self.model._meta.object_name, num, kwargs))
MultipleObjectsReturned: get() returned more than one Link -- it returned 2! Lookup parameters were {'name': 'to', 'parent': <Start: start>}
In the table oozie_link i had "duplicated" lines like (same parent_id, same child_id):
comment|name|id |parent_id|child_id
|to |42 |47 |48
|to |68 |47 |48
I've deleted these duplicates and that fixed the problem.
Critical 