anchor.diff:           "insert_order": 101,
            "priority": "URGENT",
            "source": "create-index [foo_9], cause [api]",
  +         "executing" : true,
            "time_in_queue_millis": 86,
            "time_in_queue": "86ms"
         },
  
positive.code:     the task queue.
      
  `priority`::
      (string) The priority of the pending task.
      
  `source`::
      (string) A general description of the cluster task that may include a reason 
      and origin. 
      
  `time_in_queue_millis`::
      (integer) The time expressed in milliseconds since the task is waiting for 
  
negative.code:          "insert_order": 46,
           "priority": "HIGH",
           "source": "shard-started ([foo_2][1], node[tMTocMvQQgGCkj7QDHl3OA], [P], s[INITIALIZING]), reason [after recovery from shard_store]",
           "executing" : false,
           "time_in_queue_millis": 842,
           "time_in_queue": "842ms"
        },
  