repl-chris opened a new pull request, #23462: URL: https://github.com/apache/airflow/pull/23462
DagRun links in the UI to `/graph` can currently be broken if you have several runs starting at (basically) the same time. The UI control that airflow uses for base_date only has per-second resolution (it loses everything sub-second), so to account for that the current implementation defaults base_date to exec_date rounded up to the nearest second. The problem occurs when several other dagruns were triggered in that rounded second - those other dagruns are loaded first (up to `num_runs`) so it's possible the requested dagrun does not even get loaded. I know it sounds like an uncommon scenario but it actually happens to us a lot, as we have several processes that kick off many dagruns at the same time. This PR maintains the existing rounding behavior for the base_date UI control, but uses the requested exec_date for the database query when the base_date has been rounded. This way the requested dagrun will always be the first record returned, even when base_date has been rounded up. <!-- Thank you for contributing! Please make sure that your code changes are covered with tests. And in case of new features or big changes remember to adjust the documentation. Feel free to ping committers for the review! In case of existing issue, reference it using one of the following: closes: #ISSUE related: #ISSUE How to write a good git commit message: http://chris.beams.io/posts/git-commit/ --> --- **^ Add meaningful description above** Read the **[Pull Request Guidelines](https://github.com/apache/airflow/blob/main/CONTRIBUTING.rst#pull-request-guidelines)** for more information. In case of fundamental code change, Airflow Improvement Proposal ([AIP](https://cwiki.apache.org/confluence/display/AIRFLOW/Airflow+Improvements+Proposals)) is needed. In case of a new dependency, check compliance with the [ASF 3rd Party License Policy](https://www.apache.org/legal/resolved.html#category-x). In case of backwards incompatible changes please leave a note in a newsfragement file, named `{pr_number}.significant.rst`, in [newsfragments](https://github.com/apache/airflow/tree/main/newsfragments). -- 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]
