RikHeijdens opened a new pull request #13215: URL: https://github.com/apache/airflow/pull/13215
`LocalExecutor` uses a [multiprocessing.Queue](https://docs.python.org/3/library/multiprocessing.html#multiprocessing.Queue) to distribute tasks to the instances of `QueuedLocalWorker`. If for some reason LocalExecutor exits (e.g. because it encountered an unhandled exception), then each of the QueuedLocalWorker instances that it manages will also exit with an uncaught `EOFError` while trying to read from the task queue. Because this causes a traceback to be logged for each of the workers that exits, this obfuscates the root cause of the issue, i.e. that the managing `LocalExecutor` terminated. By catching the `EOFError` in QueuedLocalWorker, logging an error and exiting gracefully we circumvent this problem, providing more clarity to the root cause of the issue to the Airflow administrator. --- **^ Add meaningful description above** Read the **[Pull Request Guidelines](https://github.com/apache/airflow/blob/master/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 [UPDATING.md](https://github.com/apache/airflow/blob/master/UPDATING.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. For queries about this service, please contact Infrastructure at: [email protected]
