docs: def job_delete(job_id):
      '''Deletes the job together with its logs and metadata.
  
      :param job_id: An identifier for the job
      :type job_id: string
  
      :statuscode 200: no error
      :statuscode 403: not authorized to delete the job
      :statuscode 404: the job could not be found
      :statuscode 409: an error occurred
      '''
      conn = db.ENGINE.connect()
      job = db.get_job(job_id)
      if not job:
          return json.dumps({'error': 'job_id not found'}), 404, headers
      if not is_authorized(job):
          return json.dumps({'error': 'not authorized'}), 403, headers
      trans = conn.begin()
      try:
          conn.execute(db.JOBS_TABLE.delete().where(
                       db.JOBS_TABLE.c.job_id == job_id))
          trans.commit()
          return json.dumps({'success': True}), 200, headers
      except Exception, e:
          trans.rollback()
          return json.dumps({'error': str(e)}), 409, headers
      finally:
          conn.close()