[GitHub] [airflow] kaxil edited a comment on issue #6549: [AIRFLOW-5880] Enforce unique task ids

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kaxil edited a comment on issue #6549: [AIRFLOW-5880] Enforce unique task ids
URL: https://github.com/apache/airflow/pull/6549#issuecomment-566285839
 
 
   @Acehaidrey 
   
   > To be sure, it seems we cannot enforce if two tasks that are the same operator with the same task_id are in the dag, it will fail to catch this. Is this the experience expected?
   
   No that is not true.
   
   For example, the following would raise an error:
   
   ```python
   from airflow.utils import timezone
   from airflow.operators.bash_operator import BashOperator
   
   with DAG("test_dag", start_date=timezone.datetime(2016, 1, 1)) as dag:
       t1 = BashOperator(task_id="t1", bash_command="true")
       t2 = BashOperator(task_id="t1", bash_command="false")
       t1 >> t2
   ```
   
   Error:
   
   ```
   airflow.exceptions.DuplicateTaskIdFound: Task id 't1' has already been added to the DAG
   ```

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