Dynamic Tasks inside of TaskGroup do not have group_id prepended to task_id

Apache Airflow version

2.3.3 (latest released)

What happened

As the title states, if you have dynamically mapped tasks inside of a TaskGroup, those tasks do not get the group_id prepended to their respective task_ids. This causes at least a couple of undesirable side effects:

1. Task names are truncated in Grid/Graph* View. The tasks below are named plus_one and plus_two:

Presumably this is because the UI normally strips off the group_id prefix.

* Graph View was very inconsistent in my experience. Sometimes the names are truncated, and sometimes they render correctly. I haven’t figured out the pattern behind this behavior.

1. Duplicate task_ids between groups result in a airflow.exceptions.DuplicateTaskIdFound, even if the group_id would normally disambiguate them.

What you think should happen instead

These dynamic tasks inside of a group should have the group_id prepended for consistent behavior.

How to reproduce

#!/usr/bin/env python3
import datetime

from airflow.decorators import dag, task
from airflow.utils.task_group import TaskGroup


@dag(
    start_date=datetime.datetime(2022, 7, 19),
    schedule_interval=None,
)
def test_dag():
    with TaskGroup(group_id='group'):
        @task
        def plus_one(x: int):
            return x + 1

        plus_one.expand(x=[1, 2, 3])

    with TaskGroup(group_id='ggg'):
        @task
        def plus_two(x: int):
            return x + 2

        plus_two.expand(x=[1, 2, 3])


dag = test_dag()


if __name__ == '__main__':
    dag.cli()

Operating System

CentOS Stream 8

Versions of Apache Airflow Providers

N/A

Deployment

Other

Deployment details

Standalone

Anything else

Possibly related: #12309

Are you willing to submit PR?

• Yes I am willing to submit a PR!

Code of Conduct

• I agree to follow this project’s Code of Conduct

[erdos2n]

Can I take this @bbovenzi ?

[bbovenzi]

Ok I found the issue. If the groups are expanded on the initial page load the labels are correct. If a user clicks to expand a group the labels are not being updated. I’m creating a PR to fix this now.