eprj453 opened a new pull request #22711: URL: https://github.com/apache/airflow/pull/22711
<!-- 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/ --> LocalExecutor's worker is created by number of parallelism if LimitedParallelism. if self.parallelism is negative number, airflow doesn't raise error but all tasks are stucking in scheduled because worker doesn't generate. ```python # class LimitedParallelism def start(self) -> None: """Starts limited parallelism implementation.""" if not self.executor.manager: raise AirflowException(NOT_STARTED_MESSAGE) self.queue = self.executor.manager.Queue() if not self.executor.result_queue: raise AirflowException(NOT_STARTED_MESSAGE) self.executor.workers = [ QueuedLocalWorker(self.queue, self.executor.result_queue) for _ in range(self.executor.parallelism) ] self.executor.workers_used = len(self.executor.workers) for worker in self.executor.workers: worker.start() ``` so if self.parallelism is negative number, it should be UnlimitedParallelism that doesn't effected by parallelism option. ```python self.impl = ( LocalExecutor.UnlimitedParallelism(self) if self.parallelism <= 0 else LocalExecutor.LimitedParallelism(self) ) ``` --- **^ 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 [UPDATING.md](https://github.com/apache/airflow/blob/main/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. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
