jerryqhyu opened a new issue, #41596:
URL: https://github.com/apache/airflow/issues/41596
### Apache Airflow version
2.9.3
### If "Other Airflow 2 version" selected, which one?
_No response_
### What happened?
When the same task group gets called multiple times within a task group, a
`airflow.exceptions.DuplicateTaskIdFound` is raised. See `print_k_group_inner`
in the following example. Note that if you comment out one of the
`print_k_group_inner`, the top-level task gorup is named correctly to
`print_k_group` and `print_k_group__1`.
### What you think should happen instead?
There should be 4 task groups created and no errors raised.
-`print_k_group.print_k_group_inner`
-`print_k_group.print_k_group_inner__1`
-`print_k_group__1.print_k_group_inner`
-`print_k_group__1.print_k_group_inner__1`
### How to reproduce
`from airflow.decorators import dag, task_group, task
from pendulum import datetime
@dag(
start_date=datetime(2023, 7, 1),
schedule=None,
catchup=False,
tags=["@task_group", "dependencies"],
)
def test_tg():
@task
def get_k():
return 10
@task
def print_k(k):
print(k)
@task_group
def print_k_group(k):
print_k_group_inner(k)
print_k_group_inner(k)
@task_group
def print_k_group_inner(k):
print_k(k)
k = get_k()
print_k_group(k)
print_k_group(k)
test_tg()
`
### Operating System
Ubuntu 22.04.4 LTS
### Versions of Apache Airflow Providers
None
### Deployment
Official Apache Airflow Helm Chart
### Deployment details
_No response_
### Anything else?
_No response_
### Are you willing to submit PR?
- [ ] Yes I am willing to submit a PR!
### Code of Conduct
- [X] I agree to follow this project's [Code of
Conduct](https://github.com/apache/airflow/blob/main/CODE_OF_CONDUCT.md)
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