[GitHub] [airflow] kaxil edited a comment on issue #19917: Task-level end_date stops entire DAG

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

kaxil edited a comment on issue #19917:
URL: https://github.com/apache/airflow/issues/19917#issuecomment-999055989


   >One thing that we should consider is also the case of backfilling.
   
   Oof yeah, backfill is a use-case, true.
   
   
   
   > I think the logic should be:
   > 
   > For start date.
   > 
   > * Treat null task start date as dag start date
   > * dag start date is min of all start dates
   > 
   > For end date
   > 
   > * treat null task end date as no end date
   > * when calculating dag end date (when it isn't given explicitly at the dag level), if any tasks have null end date then the dag has no end date.
   
   Generally, agree, I think we should also add logs with warnings for those case -- so "unintentional" cases can be mitigated


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