[GitHub] [airflow] park-peter commented on issue #25200: DAG Run fails when chaining multiple empty mapped tasks

[GitBox <gi...@apache.org>]

park-peter commented on issue #25200:
URL: https://github.com/apache/airflow/issues/25200#issuecomment-1318967932

   The issue still persists when more than 2 empty mapped tasks are chained with 2.4.3. Example code:
   ```
   from datetime import datetime
   
   from airflow import DAG
   from airflow.decorators import task
   
   
   with DAG(dag_id="break_mapping", start_date=datetime(2022, 3, 4)) as dag:
   
       @task
       def add_one(x: int):
           return x + 1
   
       @task
       def say_hi():
           print("Hi")
   
       @task
       def say_bye():
           print("Bye")
   
       added_values = add_one.expand(x=[])
       added_more_values = add_one.expand(x=[])
       added_more_more_values = add_one.expand(x=[])
       say_hi() >> say_bye() >> added_values
       added_values >> added_more_values >> added_more_more_values
   ```
   ![image](https://user-images.githubusercontent.com/46539900/202515268-ddd5c797-faf0-4332-ad8f-b6aa5ec087b7.png)
   


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