sktemkar opened a new issue, #43723:
URL: https://github.com/apache/airflow/issues/43723
### Apache Airflow version
Other Airflow 2 version (please specify below)
### If "Other Airflow 2 version" selected, which one?
2.6.1
### What happened?
DagNotFound - Dag already exists and and it failed one time with dag_id not
found. When we clear the task or resubmit it, the execution is success. Is this
something related to dag parsing or dag import timeout.
The number of dags in the dags folder is approximately 1100.
The dag has successful runs for long time, but it suddenly failed with below
error.
ERROR - Task failed with exception
Traceback (most recent call last):
File
"/home/airflow/.local/lib/python3.7/site-packages/airflow/operators/trigger_dagrun.py",
line 155, in execute
replace_microseconds=False,
File
"/home/airflow/.local/lib/python3.7/site-packages/airflow/api/common/trigger_dag.py",
line 128, in trigger_dag
replace_microseconds=replace_microseconds,
File
"/home/airflow/.local/lib/python3.7/site-packages/airflow/api/common/trigger_dag.py",
line 52, in _trigger_dag
raise DagNotFound(f"Dag id {dag_id} not found")
airflow.exceptions.DagNotFound: Dag id dag_test1 not found
### What you think should happen instead?
It should execute as BAU
### How to reproduce
This issue is intermittent and it occurred all of a sudden.
The number of dags in the dags folder is approximately 1100.
### Operating System
Azure Aks 1.29.7 ubuntu
### Versions of Apache Airflow Providers
_No response_
### Deployment
Official Apache Airflow Helm Chart
### 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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