jyotsa09 opened a new issue, #27878:
URL: https://github.com/apache/airflow/issues/27878
### Apache Airflow version
main (development)
### What happened
Task failing with error "missing upstream values" when running a dag with
dynamic task group mapping
error -
```
[2022-11-23, 15:50:07 UTC] {abstractoperator.py:456} ERROR - Cannot expand
<Task(_PythonDecoratedOperator): increment_and_verify.hello_there> for run
manual__2022-11-23T15:49:59.771915+00:00; missing upstream values: ['x']
```
### What you think should happen instead
It should succeed
### How to reproduce
Run the below dag code
```
from airflow import DAG
from airflow.models.taskinstance import TaskInstance
from airflow.operators.dummy import DummyOperator
from datetime import datetime, timedelta
from airflow.decorators import task, task_group
with DAG(
dag_id="taskmap_taskgroup",
tags=["AIP_42"],
start_date=datetime(1970, 1, 1),
schedule_interval=None,
) as dag:
@task
def onetwothree():
return [1,2,3]
@task
def hello_there(arg):
print(arg)
@task_group
def increment_and_verify(x):
hello_there(x)
increment_and_verify.expand(x=onetwothree())>>DummyOperator(task_id="done")
```
### Operating System
mac os
### Versions of Apache Airflow Providers
_No response_
### Deployment
Virtualenv installation
### 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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