[sahara] Job execution page not working

[Sergey Reshetnyak]

Steps to reproduce:
1. Create Sahara cluster.
2. Launch EDP job to cluster.
3. Delete cluster.
4. Go to "Job execution" page.

Error:
Internal Server Error: /project/data_processing/job_executions/
Traceback (most recent call last):
  File "/home/serg/projects/horizon/.venv/lib/python2.7/site-packages/django/core/handlers/base.py", line 112, in get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/home/serg/projects/horizon/horizon/decorators.py", line 36, in dec
    return view_func(request, *args, **kwargs)
  File "/home/serg/projects/horizon/horizon/decorators.py", line 52, in dec
    return view_func(request, *args, **kwargs)
  File "/home/serg/projects/horizon/horizon/decorators.py", line 36, in dec
    return view_func(request, *args, **kwargs)
  File "/home/serg/projects/horizon/horizon/decorators.py", line 84, in dec
    return view_func(request, *args, **kwargs)
  File "/home/serg/projects/horizon/.venv/lib/python2.7/site-packages/django/views/generic/base.py", line 69, in view
    return self.dispatch(request, *args, **kwargs)
  File "/home/serg/projects/horizon/.venv/lib/python2.7/site-packages/django/views/generic/base.py", line 87, in dispatch
    return handler(request, *args, **kwargs)
  File "/home/serg/projects/horizon/horizon/tables/views.py", line 157, in get
    handled = self.construct_tables()
  File "/home/serg/projects/horizon/horizon/tables/views.py", line 148, in construct_tables
    handled = self.handle_table(table)
  File "/home/serg/projects/horizon/horizon/tables/views.py", line 120, in handle_table
    data = self._get_data_dict()
  File "/home/serg/projects/horizon/horizon/tables/views.py", line 185, in _get_data_dict
    self._data = {self.table_class._meta.name: self.get_data()}
  File "/home/serg/projects/horizon/openstack_dashboard/dashboards/project/data_processing/job_executions/views.py", line 43, in get_data
    _("Unable to fetch job executions."))
  File "/home/serg/projects/horizon/horizon/exceptions.py", line 334, in handle
    six.reraise(exc_type, exc_value, exc_traceback)
  File "/home/serg/projects/horizon/openstack_dashboard/dashboards/project/data_processing/job_executions/views.py", line 39, in get_data
    jobs = saharaclient.job_execution_list(self.request)
  File "/home/serg/projects/horizon/openstack_dashboard/api/sahara.py", line 299, in job_execution_list
    setattr(jex, 'cluster_name', cluster_dict.get(jex.cluster_id).name)
AttributeError: 'NoneType' object has no attribute 'name'

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/125927

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/125927
Committed: https://git.openstack.org/cgit/openstack/horizon/commit/?id=4f947f8cb21e68f3dffbeac52ad9b1e938946060
Submitter: Jenkins
Branch: master

commit 4f947f8cb21e68f3dffbeac52ad9b1e938946060
Author: Nikita Konovalov <email address hidden>
Date: Fri Oct 3 14:48:27 2014 +0400

    [Data_processing] fix job_executions table

    The table does not crash anymore after the cluster is deleted.
    Both the cluster object and the job are queried before extending a job execution.
    When the cluster or the job are deleted 'Not available' is assigned as the name.

    Closes-Bug: #1376738
    Closes-Bug: #1391356
    Closes-Bug: #1391507
    Change-Id: Iee60572f3a6e02447a6cd8508735bbb91ec020e9