trowdan opened a new issue #14727:
URL: https://github.com/apache/airflow/issues/14727
**Apache Airflow version**: 2.0.0
**Kubernetes version** : 1.19.2
**Environment**:
- **Cloud provider** : Openshift
**What happened**:
Once a task in a task group is queued the scheduler throws exeptions like
the following one:
_Note: <dag_name>, <task_group_1>, <task_group_2>, <task_id> are
**placeholders**_
```
[2021-03-11 16:52:48,409] {kubernetes_executor.py:579} WARNING -
ApiException when attempting to run task, re-queueing. Message: Pod
"<dag_name><task_group_1><task_group_2><task_id>-5cecda4b56a34c4ea061b1746d1879bb"
is invalid: metadata.labels: Invalid value:
"<task_group_1>.<task_group_2>.<task_id>": must be no more than 63 characters
[2021-03-11 16:52:48,410] {kubernetes_executor.py:277} INFO - Kubernetes job
is (TaskInstanceKey(dag_id='<dag_name>',
task_id='<task_group_1>.<task_group_2>.<task_id>',
execution_date=datetime.datetime(2021, 3, 11, 16, 46, 42, 990210,
tzinfo=Timezone('UTC')), try_number=1), ['airflow', 'tasks', 'run',
'<dag_name>', '<task_group_1>.<task_group_2>.<task_id>',
'2021-03-11T16:46:42.990210+00:00', '--local', '--pool', 'default_pool',
'--subdir', '/opt/airflow/dags/<dag_name>'], None, None)
[2021-03-11 16:52:48,432] {pod_launcher.py:86} ERROR - Exception when
attempting to create Namespaced Pod: {
```
**What you expected to happen**:
Tasks in task group are scheduled as expected
**How to reproduce it**:
Create a dag with the following structure:
* Task_group_1
* Task_group_2
* Task_id
make the sum of the 3 labels > 63
**Anything else we need to know**:
It seems releated to this one https://github.com/apache/airflow/pull/4636
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