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Posted to commits@airflow.apache.org by GitBox <gi...@apache.org> on 2022/02/14 12:38:18 UTC
[GitHub] [airflow] AlejandroBaron opened a new issue #21561: Tasks after BranchOperator are getting skipped using TaskFlow API
AlejandroBaron opened a new issue #21561:
URL: https://github.com/apache/airflow/issues/21561
### Apache Airflow version
2.2.3 (latest released)
### What happened
I was trying to use branching in the newest Airflow version but no matter what I try, any task after the branch operator gets skipped
Might be related to https://github.com/apache/airflow/issues/10725, but none of the solutions there seemed to work.
### What you expected to happen
The task following a BranchPythonOperator to be executed
### How to reproduce
```
from airflow.decorators import dag, task
from datetime import timedelta, datetime
from airflow.operators.python import BranchPythonOperator
from airflow.utils.trigger_rule import TriggerRule
import logging
logger = logging.getLogger("airflow.task")
@dag(
schedule_interval="0 0 * * *",
start_date=datetime.today() - timedelta(days=2),
dagrun_timeout=timedelta(minutes=60),
)
def StackOverflowExample():
@task
def task_A():
logging.info("TASK A")
@task
def task_B():
logging.info("TASK B")
@task
def task_C():
logging.info("TASK C")
@task
def task_D():
logging.info("TASK D")
return {"parameter":0.5}
def _choose_task(task_parameters,**kwargs):
logging.info(task_parameters["parameter"])
if task_parameters["parameter"]<0.5:
logging.info("SUCCESSS ")
return ['branch_1', 'task_final']
else:
logging.info("RIP")
return ['branch_2', 'task_final']
@task(task_id="branch_1")
def branch_1():
logging.info("branch_1...")
@task(task_id="branch_2")
def branch_2():
logging.info("branch_2")
@task(task_id="task_final")
def task_final():
logging.info("task_final")
parameter = task_A() >> task_B() >> task_C() >> task_D()
choose_task = BranchPythonOperator(
task_id='choose_best_model',
op_kwargs={"task_parameters":parameter},
python_callable=_choose_task,
trigger_rule=TriggerRule.NONE_FAILED_MIN_ONE_SUCCESS
)
choose_task >> [branch_1(), branch_2()] >> task_final()
dag = StackOverflowExample ()
```
### Operating System
Ubuntu 18.04 (WSL2)
### Versions of Apache Airflow Providers
_No response_
### 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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[GitHub] [airflow] eladkal commented on issue #21561: Tasks after BranchOperator are getting skipped using TaskFlow API
Posted by GitBox <gi...@apache.org>.
eladkal commented on issue #21561:
URL: https://github.com/apache/airflow/issues/21561#issuecomment-1039153945
This is not a bug but an issue with your pipeline. You need to override the trigger rule.
Answered in https://stackoverflow.com/a/71112836/14624409
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[GitHub] [airflow] boring-cyborg[bot] commented on issue #21561: Tasks after BranchOperator are getting skipped using TaskFlow API
Posted by GitBox <gi...@apache.org>.
boring-cyborg[bot] commented on issue #21561:
URL: https://github.com/apache/airflow/issues/21561#issuecomment-1039038453
Thanks for opening your first issue here! Be sure to follow the issue template!
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[GitHub] [airflow] eladkal closed issue #21561: Tasks after BranchOperator are getting skipped using TaskFlow API
Posted by GitBox <gi...@apache.org>.
eladkal closed issue #21561:
URL: https://github.com/apache/airflow/issues/21561
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