Error While Export Workflow

[#1]

Hello,

I'm having a workflow that I would like to export. However I have an error while exporting in Hue:

[25/Feb/2016 06:16:43 -0800] base         ERROR    Internal Server Error: /oozie/export_workflow/180
Traceback (most recent call last):
  File "/opt/cloudera/parcels/CDH-5.3.5-1.cdh5.3.5.p0.4/lib/hue/build/env/lib/python2.6/site-packages/Django-1.4.5-py2.6.egg/django/core/handlers/base.py", line 111, in get_response
    response = callback(request, *callback_args, **callback_kwargs)
  File "/opt/cloudera/parcels/CDH-5.3.5-1.cdh5.3.5.p0.4/lib/hue/apps/oozie/src/oozie/decorators.py", line 52, in decorate
    return view_func(request, *args, **kwargs)
  File "/opt/cloudera/parcels/CDH-5.3.5-1.cdh5.3.5.p0.4/lib/hue/apps/oozie/src/oozie/views/editor.py", line 240, in export_workflow
    zip_file = workflow.compress(mapping=dict([(param['name'], param['value']) for param in workflow.find_all_parameters()]))
  File "/opt/cloudera/parcels/CDH-5.3.5-1.cdh5.3.5.p0.4/lib/hue/apps/oozie/src/oozie/models.py", line 581, in compress
    xml = self.to_xml(mapping=mapping)
  File "/opt/cloudera/parcels/CDH-5.3.5-1.cdh5.3.5.p0.4/lib/hue/apps/oozie/src/oozie/models.py", line 561, in to_xml
    xml = re.sub(re.compile('\s*\n+', re.MULTILINE), '\n', django_mako.render_to_string(tmpl, {'workflow': self, 'mapping': mapping}))
  File "/opt/cloudera/parcels/CDH-5.3.5-1.cdh5.3.5.p0.4/lib/hue/desktop/core/src/desktop/lib/django_mako.py", line 109, in render_to_string_normal
    result = template.render(**data_dict)
  File "/opt/cloudera/parcels/CDH-5.3.5-1.cdh5.3.5.p0.4/lib/hue/build/env/lib/python2.6/site-packages/Mako-0.8.1-py2.6.egg/mako/template.py", line 443, in render
    return runtime._render(self, self.callable_, args, data)
  File "/opt/cloudera/parcels/CDH-5.3.5-1.cdh5.3.5.p0.4/lib/hue/build/env/lib/python2.6/site-packages/Mako-0.8.1-py2.6.egg/mako/runtime.py", line 786, in _render
    **_kwargs_for_callable(callable_, data))
  File "/opt/cloudera/parcels/CDH-5.3.5-1.cdh5.3.5.p0.4/lib/hue/build/env/lib/python2.6/site-packages/Mako-0.8.1-py2.6.egg/mako/runtime.py", line 818, in _render_context
    _exec_template(inherit, lclcontext, args=args, kwargs=kwargs)
  File "/opt/cloudera/parcels/CDH-5.3.5-1.cdh5.3.5.p0.4/lib/hue/build/env/lib/python2.6/site-packages/Mako-0.8.1-py2.6.egg/mako/runtime.py", line 844, in _exec_template
    callable_(context, *args, **kwargs)
  File "/tmp/tmpRHee5F/oozie/editor/gen/workflow.xml.mako.py", line 105, in render_body
    __M_writer( node.to_xml(mapping) )
  File "/opt/cloudera/parcels/CDH-5.3.5-1.cdh5.3.5.p0.4/lib/hue/apps/oozie/src/oozie/models.py", line 712, in to_xml
    return django_mako.render_to_string(node.get_template_name(), data)
  File "/opt/cloudera/parcels/CDH-5.3.5-1.cdh5.3.5.p0.4/lib/hue/desktop/core/src/desktop/lib/django_mako.py", line 109, in render_to_string_normal
    result = template.render(**data_dict)
  File "/opt/cloudera/parcels/CDH-5.3.5-1.cdh5.3.5.p0.4/lib/hue/build/env/lib/python2.6/site-packages/Mako-0.8.1-py2.6.egg/mako/template.py", line 443, in render
    return runtime._render(self, self.callable_, args, data)
  File "/opt/cloudera/parcels/CDH-5.3.5-1.cdh5.3.5.p0.4/lib/hue/build/env/lib/python2.6/site-packages/Mako-0.8.1-py2.6.egg/mako/runtime.py", line 786, in _render
    **_kwargs_for_callable(callable_, data))
  File "/opt/cloudera/parcels/CDH-5.3.5-1.cdh5.3.5.p0.4/lib/hue/build/env/lib/python2.6/site-packages/Mako-0.8.1-py2.6.egg/mako/runtime.py", line 818, in _render_context
    _exec_template(inherit, lclcontext, args=args, kwargs=kwargs)
  File "/opt/cloudera/parcels/CDH-5.3.5-1.cdh5.3.5.p0.4/lib/hue/build/env/lib/python2.6/site-packages/Mako-0.8.1-py2.6.egg/mako/runtime.py", line 844, in _exec_template
    callable_(context, *args, **kwargs)
  File "/tmp/tmpRHee5F/oozie/editor/gen/workflow-decision.xml.mako.py", line 40, in render_body
    __M_writer(escape(unicode( node.get_oozie_child('default') )))
  File "/opt/cloudera/parcels/CDH-5.3.5-1.cdh5.3.5.p0.4/lib/hue/apps/oozie/src/oozie/models.py", line 731, in get_oozie_child
    child = self.get_link(name).child.get_full_node()
  File "/opt/cloudera/parcels/CDH-5.3.5-1.cdh5.3.5.p0.4/lib/hue/apps/oozie/src/oozie/models.py", line 720, in get_link
    return Link.objects.exclude(name__in=Link.META_LINKS).get(parent=self, name=name)
  File "/opt/cloudera/parcels/CDH-5.3.5-1.cdh5.3.5.p0.4/lib/hue/build/env/lib/python2.6/site-packages/Django-1.4.5-py2.6.egg/django/db/models/query.py", line 366, in get
    % self.model._meta.object_name)
DoesNotExist: Link matching query does not exist.

[25/Feb/2016 06:16:43 -0800] middleware   INFO     Processing exception: Link matching query does not exist.: Traceback (most recent call last):
  File "/opt/cloudera/parcels/CDH-5.3.5-1.cdh5.3.5.p0.4/lib/hue/build/env/lib/python2.6/site-packages/Django-1.4.5-py2.6.egg/django/core/handlers/base.py", line 111, in get_response
    response = callback(request, *callback_args, **callback_kwargs)
  File "/opt/cloudera/parcels/CDH-5.3.5-1.cdh5.3.5.p0.4/lib/hue/apps/oozie/src/oozie/decorators.py", line 52, in decorate
    return view_func(request, *args, **kwargs)
  File "/opt/cloudera/parcels/CDH-5.3.5-1.cdh5.3.5.p0.4/lib/hue/apps/oozie/src/oozie/views/editor.py", line 240, in export_workflow
    zip_file = workflow.compress(mapping=dict([(param['name'], param['value']) for param in workflow.find_all_parameters()]))
  File "/opt/cloudera/parcels/CDH-5.3.5-1.cdh5.3.5.p0.4/lib/hue/apps/oozie/src/oozie/models.py", line 581, in compress
    xml = self.to_xml(mapping=mapping)
  File "/opt/cloudera/parcels/CDH-5.3.5-1.cdh5.3.5.p0.4/lib/hue/apps/oozie/src/oozie/models.py", line 561, in to_xml
    xml = re.sub(re.compile('\s*\n+', re.MULTILINE), '\n', django_mako.render_to_string(tmpl, {'workflow': self, 'mapping': mapping}))
  File "/opt/cloudera/parcels/CDH-5.3.5-1.cdh5.3.5.p0.4/lib/hue/desktop/core/src/desktop/lib/django_mako.py", line 109, in render_to_string_normal
    result = template.render(**data_dict)
  File "/opt/cloudera/parcels/CDH-5.3.5-1.cdh5.3.5.p0.4/lib/hue/build/env/lib/python2.6/site-packages/Mako-0.8.1-py2.6.egg/mako/template.py", line 443, in render
    return runtime._render(self, self.callable_, args, data)
  File "/opt/cloudera/parcels/CDH-5.3.5-1.cdh5.3.5.p0.4/lib/hue/build/env/lib/python2.6/site-packages/Mako-0.8.1-py2.6.egg/mako/runtime.py", line 786, in _render
    **_kwargs_for_callable(callable_, data))
  File "/opt/cloudera/parcels/CDH-5.3.5-1.cdh5.3.5.p0.4/lib/hue/build/env/lib/python2.6/site-packages/Mako-0.8.1-py2.6.egg/mako/runtime.py", line 818, in _render_context
    _exec_template(inherit, lclcontext, args=args, kwargs=kwargs)
  File "/opt/cloudera/parcels/CDH-5.3.5-1.cdh5.3.5.p0.4/lib/hue/build/env/lib/python2.6/site-packages/Mako-0.8.1-py2.6.egg/mako/runtime.py", line 844, in _exec_template
    callable_(context, *args, **kwargs)
  File "/tmp/tmpRHee5F/oozie/editor/gen/workflow.xml.mako.py", line 105, in render_body
    __M_writer( node.to_xml(mapping) )
  File "/opt/cloudera/parcels/CDH-5.3.5-1.cdh5.3.5.p0.4/lib/hue/apps/oozie/src/oozie/models.py", line 712, in to_xml
    return django_mako.render_to_string(node.get_template_name(), data)
  File "/opt/cloudera/parcels/CDH-5.3.5-1.cdh5.3.5.p0.4/lib/hue/desktop/core/src/desktop/lib/django_mako.py", line 109, in render_to_string_normal
    result = template.render(**data_dict)
  File "/opt/cloudera/parcels/CDH-5.3.5-1.cdh5.3.5.p0.4/lib/hue/build/env/lib/python2.6/site-packages/Mako-0.8.1-py2.6.egg/mako/template.py", line 443, in render
    return runtime._render(self, self.callable_, args, data)
  File "/opt/cloudera/parcels/CDH-5.3.5-1.cdh5.3.5.p0.4/lib/hue/build/env/lib/python2.6/site-packages/Mako-0.8.1-py2.6.egg/mako/runtime.py", line 786, in _render
    **_kwargs_for_callable(callable_, data))
  File "/opt/cloudera/parcels/CDH-5.3.5-1.cdh5.3.5.p0.4/lib/hue/build/env/lib/python2.6/site-packages/Mako-0.8.1-py2.6.egg/mako/runtime.py", line 818, in _render_context
    _exec_template(inherit, lclcontext, args=args, kwargs=kwargs)
  File "/opt/cloudera/parcels/CDH-5.3.5-1.cdh5.3.5.p0.4/lib/hue/build/env/lib/python2.6/site-packages/Mako-0.8.1-py2.6.egg/mako/runtime.py", line 844, in _exec_template
    callable_(context, *args, **kwargs)
  File "/tmp/tmpRHee5F/oozie/editor/gen/workflow-decision.xml.mako.py", line 40, in render_body
    __M_writer(escape(unicode( node.get_oozie_child('default') )))
  File "/opt/cloudera/parcels/CDH-5.3.5-1.cdh5.3.5.p0.4/lib/hue/apps/oozie/src/oozie/models.py", line 731, in get_oozie_child
    child = self.get_link(name).child.get_full_node()
  File "/opt/cloudera/parcels/CDH-5.3.5-1.cdh5.3.5.p0.4/lib/hue/apps/oozie/src/oozie/models.py", line 720, in get_link
    return Link.objects.exclude(name__in=Link.META_LINKS).get(parent=self, name=name)
  File "/opt/cloudera/parcels/CDH-5.3.5-1.cdh5.3.5.p0.4/lib/hue/build/env/lib/python2.6/site-packages/Django-1.4.5-py2.6.egg/django/db/models/query.py", line 366, in get
    % self.model._meta.object_name)
DoesNotExist: Link matching query does not exist.

Note, when I clock on the workflow button, I do have the new tab that is opened to the location of all the jars, and the workflow.xml....

Note: This is the only workflow that I cannot export. (I already exported other workflows...)

Thank you!

[#2]

That is an unfortunate bug in C5.3, in latest CDH the import/expore were
revamped to be better:
http://gethue.com/export-and-import-your-oozie-workflows/