SDubrulle opened a new issue #17734:
URL: https://github.com/apache/airflow/issues/17734
**Apache Airflow version**:
2.1.0
**OS**:
Debian GNU/Linux 10
**Apache Airflow Provider versions**:
Irrelevant for this issue.
**Deployment**:
K8S using a custom helm chart
**What happened**:
When backfilling a DAG with a --mark-success flag, all tasks (within
specified timerange) are set to success.
**What you expected to happen**:
I expected the task-level start_date and end_date to be taken into account.
As such, a task-instance would only be created if the dag execution date is
within the task date range.
**How to reproduce it**:
# BACKFILL COMMAND
# airflow dags backfill -s 2020-08-01 -e 2021-8-18 --mark-success
start_date_test_dag
##
## DAG
from datetime import datetime
from airflow.decorators import dag, task
@dag(
default_args={},
description="Start date test DAG",
schedule_interval="0 0 * * *",
start_date=datetime(2021, 8, 1),
catchup=True,
)
def start_date_test_dag():
@task()
def since_dag_start_date():
print("Done")
@task(start_date=datetime(2021, 8, 10))
def task_defined_start_date():
print("Done")
[since_dag_start_date(), task_defined_start_date()]
dag = start_date_test_dag()
## DAG END
**Are you willing to submit a PR?**
Sure, if this is unwanted behaviour and there is no workaround (other than
backfilling each task individually).
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