Gerrit-K opened a new issue, #37026: URL: https://github.com/apache/airflow/issues/37026
### Apache Airflow version Other Airflow 2 version (please specify below) ### If "Other Airflow 2 version" selected, which one? 2.8.0 ### What happened? When accessing the "Add Dag Run" dialog (`<airflow-URL>/dagrun/add`, see screenshot below) we're facing bad UI performance (>5s response time). Upon further inspection, we realized that there were two select fields in the response that were pre-populated with _a lot_ of options: Task Instances and Creating Job. Both of them contain around 20k values in our case, which (1) heavily increases the response time and (2) makes the select box almost unusable in the browser once the page eventually renders.  ### What you think should happen instead? _No response_ ### How to reproduce Create a larger number of tasks (e.g. by running a long backfill of a multi-task DAG). Then access the mentioned view. ### Operating System debian 12 (bookworm) ### Versions of Apache Airflow Providers _No response_ ### Deployment Official Apache Airflow Helm Chart ### Deployment details Official helm chart with official airflow image (2.8.0) ### Anything else? Although 20k+ task instances sounds like a lot, I think this can easily happen for a production environment. However, I'm just starting to dive into Airflow, so if it is indeed wrong to have that many task instances (e.g. if they should be cleaned up) please let me know. ### 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: commits-unsubscr...@airflow.apache.org.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
