MaiHoangViet1809 commented on issue #30276:
URL: https://github.com/apache/airflow/issues/30276#issuecomment-1516799790

   First of all, it does not show log of child task of a task_group decorator 
expanded:
   
![image](https://user-images.githubusercontent.com/95363968/233459431-e288ced2-6ce9-46d2-af73-9551d68e0b42.png)
   
   Secondly, if we are using task_group decorator and expand it, it should have 
some method to see instance of that expanded task group (like when we using 
task decorator, it will show mapping task on the right panel), each instance 
have 1 index position in UI and can click to see detail log. 
   I suggest for task_group decorator expanded, we should show its instance in 
UI, and when we click on it, it will expand into multiple child task of that 
instance, then we can click to child task to see their log.
   currently we can't see anything in UI to debug or view log:
   
![image](https://user-images.githubusercontent.com/95363968/233460520-3b821adb-0a91-4179-80a1-337cffe9c8b3.png)
   
   if we change UI support this idea, then user can use taskgroup of taskflow 
api as a pipeline template, and run or reuse this pipeline in many dags using 
various input dynamically.


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