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Posted to commits@airflow.apache.org by "krzysztofstepien-tomtom (via GitHub)" <gi...@apache.org> on 2025/07/01 10:57:08 UTC
[I] airflow 3.0.2 doesn't clear downstream tasks once previous one failed and restarted successfully [airflow]
krzysztofstepien-tomtom opened a new issue, #52640:
URL: https://github.com/apache/airflow/issues/52640
### Apache Airflow version
3.0.2
### If "Other Airflow 2 version" selected, which one?
_No response_
### What happened?
Once upstream tasks failed, but then after restarted passes though, state of downstream tasks remained unchanged and i need to clear every single of them manually:
Task a failed:
Task a passes through:
### What you think should happen instead?
_No response_
### How to reproduce
Exemplary code:
1. Start code
2. Comment `raise`
3. Clear task `a` instance
4.
```
from airflow.sdk import DAG, task
default_args = {"owner": "airflow", "tags": ["batch"]}
with DAG(
"tests",
schedule=None,
default_args=default_args,
params={},
render_template_as_native_obj=True,
catchup=False,
max_active_runs=1,
) as dag:
@task
def a():
print("Task A")
raise ValueError("This is a test error from the task a!")
@task
def b():
print("Task B")
a = a()
b = b()
a >> b
```
### Operating System
macOS
### Versions of Apache Airflow Providers
```
apache-airflow==3.0.2
apache-airflow-providers-fab==2.2.1
apache-airflow-providers-cncf-kubernetes==8.4.0 # https://github.com/apache/airflow/discussions/22555#discussioncomment-2463448
apache-airflow-providers-databricks==7.4.0
apache-airflow-providers-microsoft-azure==12.4.1
apache-airflow-providers-standard==1.3.0
```
### Deployment
Docker-Compose
### 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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Re: [I] airflow 3.0.2 doesn't clear downstream tasks once previous one failed and restarted successfully [airflow]
Posted by "jroachgolf84 (via GitHub)" <gi...@apache.org>.
jroachgolf84 commented on issue #52640:
URL: https://github.com/apache/airflow/issues/52640#issuecomment-3025885984
Good catch, going to close this issue!
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Re: [I] airflow 3.0.2 doesn't clear downstream tasks once previous one failed and restarted successfully [airflow]
Posted by "jroachgolf84 (via GitHub)" <gi...@apache.org>.
jroachgolf84 closed issue #52640: airflow 3.0.2 doesn't clear downstream tasks once previous one failed and restarted successfully
URL: https://github.com/apache/airflow/issues/52640
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Re: [I] airflow 3.0.2 doesn't clear downstream tasks once previous one failed and restarted successfully [airflow]
Posted by "krzysztofstepien-tomtom (via GitHub)" <gi...@apache.org>.
krzysztofstepien-tomtom commented on issue #52640:
URL: https://github.com/apache/airflow/issues/52640#issuecomment-3023637605
It seems that i figured out myself. In the airflow 2, once task failed, `Clear task` button by default includes all downstream tasks
In airflow 3, `Downstream` section must be explicitly selected
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