RPM Support

We see this error a good bit when we try to delete content view versions in Katello land. The Pulp translation is that we concurrently attempt to delete multiple repositories at the same time and 50% of the time hit this race condition in the output below.

- exception: 
  task_type: pulp.server.tasks.repository.delete
  _href: "/pulp/api/v2/tasks/fc50b7b8-093f-4111-8bf1-2b27d306dbe3/"
  task_id: fc50b7b8-093f-4111-8bf1-2b27d306dbe3
  tags:
  - pulp:repository:Sat6-CI-Tools_RHEL5-206_0-Red_Hat_Satellite_Tools_6_2_Composes-RHEL5_Satellite_Tools_i386_os
  - pulp:action:delete
  finish_time: '2017-06-20T15:55:58Z'
  _ns: task_status
  start_time: '2017-06-20T15:55:55Z'
  traceback: |
    Traceback (most recent call last):
      File "/usr/lib/python2.7/site-packages/celery/app/trace.py", line 240, in trace_task
        R = retval = fun(*args, **kwargs)
      File "/usr/lib/python2.7/site-packages/pulp/server/async/tasks.py", line 477, in __call__
        return super(Task, self).__call__(*args, **kwargs)
      File "/usr/lib/python2.7/site-packages/pulp/server/async/tasks.py", line 103, in __call__
        return super(PulpTask, self).__call__(*args, **kwargs)
      File "/usr/lib/python2.7/site-packages/celery/app/trace.py", line 437, in __protected_call__
        return self.run(*args, **kwargs)
      File "/usr/lib/python2.7/site-packages/pulp/server/controllers/repository.py", line 550, in delete
        raise pe
    PulpExecutionException: Pulp exception occurred: PulpExecutionException
  spawned_tasks: []
  progress_report: {}
  queue: reserved_resource_worker-0@sat-r220-02.lab.eng.rdu2.redhat.com.dq
  state: error
  worker_name: reserved_resource_worker-0@sat-r220-02.lab.eng.rdu2.redhat.com
  result: 
  error:
    code: PLP0000
    data: {}
    description: 'Pulp exception occurred: PulpExecutionException'
    sub_errors:
    - code: PLP0000
      data: {}
      description: "[Errno 2] No such file or directory: '/var/lib/pulp/published/yum/http/repos/Sat6-CI/content_views/Tools_RHEL5/206.0/custom/Red_Hat_Satellite_Tools_6_2_Composes/listing'"
      sub_errors: []
  _id:
    "$oid": 5949458a643234c3f51e0177
  id: 5949458a643234c3f51e0177
poll_attempts:
  total: 2
  failed: 1