Airflow 任务在没有任何问题的情况下运行，突然卡住一半，任务实例详细信息在消息上方显示。
我清除了整个数据库，但仍然遇到相同的错误。
事实是我只因为一些 dag 就遇到了这个问题。主要是在长时间运行的作业时。
我得到以下错误
[2019-07-03 12:14:56,337] {{models.py:1353}} INFO - Dependencies not met for <TaskInstance: XXXXXX.index_to_es 2019-07-01T13:30:00+00:00 [running]>, dependency 'Task Instance State' FAILED: Task is in the 'running' state which is not a valid state for execution. The task must be cleared in order to be run.
[2019-07-03 12:14:56,341] {{models.py:1353}} INFO - Dependencies not met for <TaskInstance: XXXXXX.index_to_es 2019-07-01T13:30:00+00:00 [running]>, dependency 'Task Instance Not Already Running' FAILED: Task is already running, it started on 2019-07-03 05:58:51.601552+00:00.
[2019-07-03 12:14:56,342] …