zhongjiajie commented on issue #7683: [AIRFLOW-7033] Change dag and task state 
meanwhile
URL: https://github.com/apache/airflow/pull/7683#issuecomment-613830825
 
 
   Ok, I will try to
   * Remove "DAG" button in Task Instance dialog in Graph view
   * Add task instances in dag run dialog in Tree view
   
   But I insist on add function `_set_dag_run_state_according_ti` in 
`mark_tasks.py` and use `include_dag=True` as default value in `view.py`, that 
mean mark dagrun success if all task instance success as default behavior
   ```diff
           return self._mark_task_instance_state(dag_id, task_id, origin, 
execution_date,
                                                 confirmed, upstream, 
downstream,
                                                 future, past, State.FAILED)
   -                                             future, past, State.FAILED)
   +                                             future, past, 
include_dag=True, State.FAILED)
   ```
   Cause I think It's a missing function in Task Instance Modal dialog, I have 
some situation about this dialog. For example
   ```py
   task1 >> [task2, task3]
   ```
   * **CASE ONE**: task2 and task3 failed, and task3 **not need** to re-run(not 
related about time and next scheduler task work fine), but task2 **have to be 
rerun**. I just mark task3 success and clear task2 include downstream. every 
thing work fine and dagrun mark as success after finish task2.
   * **CASE TWO**: task2 and task3 failed and both of them **not need to 
rerun**, I just click task1 and mark task instance success include downstream, 
but dagrun still with failed status. Yeah we could go to tree view mark dagrun 
success after I add optional button beside 'mark success/failed' button, but 
it's mean I have to move from graph to tree view, which meaningless step.
   
   So I think change dagrun state in Task Instance Modal dialog if possible 
make sense, and I want to keep it this function. And remove the "DAG" button in 
Task Instance Modal dialog to avoid misleading to user. WDYT @feluelle @kaxil 
@potiuk 

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