amoghrajesh opened a new issue, #59877:
URL: https://github.com/apache/airflow/issues/59877
### Apache Airflow version
main (development)
### If "Other Airflow 3 version" selected, which one?
_No response_
### What happened?
When `AIRFLOW__CORE__MAX_TEMPLATED_FIELD_LENGTH` is set to very small values
(e.g., 1, 5, 10), the Rendered Templates view in the Airflow UI shows
inconsistent and broken truncation behavior.
Let's take `1` as an example.
If we set `AIRFLOW__CORE__MAX_TEMPLATED_FIELD_LENGTH=1` and run a task, it
causes the Rendered Templates view to display truncated content inconsistently:
- Some fields show only the truncation suffix without any actual content
- Some fields are completely empty
- The truncation suffix itself exceeds the configured max length
### What you think should happen instead?
With `AIRFLOW__CORE__MAX_TEMPLATED_FIELD_LENGTH=1`, each templated field
should:
- Show at least 1 character of the actual value
- Behave consistently across all field types
### How to reproduce
1. Set `export AIRFLOW__CORE__MAX_TEMPLATED_FIELD_LENGTH=1` and run airflow
2. Create a dag like this one:
```python
from datetime import datetime
from airflow.sdk import DAG
from airflow.providers.standard.operators.bash import BashOperator
with DAG(
dag_id="test_max_length_1_bug",
start_date=datetime(2024, 1, 1),
schedule=None,
catchup=False,
) as dag:
task = BashOperator(
task_id="test_truncation",
bash_command="echo 'Field 1: {{ params.field1 }}' && echo 'Field 2:
{{ params.field2 }}' && echo 'Field 3: {{ params.field3 }}'",
params={
"field1": "This is a long string that should be truncated",
"field2": "Another long string for testing truncation behavior",
"field3": "Short",
"nested_dict": {
"key1": "Long value that needs truncation",
"key2": "Another long value",
"key3": "X"
},
"list_field": ["Item 1", "Item 2", "Item 3", "Item 4"],
},
env={
"ENV_VAR_1": "Long environment variable value",
"ENV_VAR_2": "Another long environment variable",
"ENV_VAR_3": "Short"
}
)
```
3. Observe rendered templates:
<img width="2560" height="1261" alt="Image"
src="https://github.com/user-attachments/assets/1eaafa28-9396-4d6c-bde4-71375b74fc44";
/>
### Operating System
MacOS
### 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)
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: [email protected]
For queries about this service, please contact Infrastructure at:
[email protected]
