bskim45 commented on issue #21072:
URL: https://github.com/apache/airflow/issues/21072#issuecomment-1070181632
I'm experiencing a similar issue somewhat related to this. When the `sla`
argument is provided but an SLA miss email is not sent nor `sla_miss_callback`
is not specified, SlaMiss entries are piled up on the `sla_miss` table with
`notification_sent=false`. This causes calling `DAGFileProcessor.manage_slas`
times out for that callback processing.
quick example:
```python
with DAG(
dag_id="example_dag",
schedule_interval='@hourly',
start_date=days_ago(1),
catchup=False,
) as dag:
dummy_task = DummyOperator(
task_id='dummy_task',
sla=datetime.timedelta(hours=18),
)
```
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