mik-laj opened a new pull request #7501: [AIRFLOW-6880] Do not check task instances for new DAGRuns URL: https://github.com/apache/airflow/pull/7501 When I have the following DAG: ``` dag = DAG(dag_id="test_dag", schedule_interval="@once", start_date=days_ago(2)) DummyOperator(task_id=f"task", dag=dag) dag.sync_to_db() ``` and executes the following code: ``` for i in range(1, 1000+1): dag.create_dagrun( run_id=f"dag-{i}", state=State.RUNNING ) ``` I got the following results Before: Query count: 4000 Average time 13983.817 ms After: Query count: 3000 Average time: 11499.290 ms Diff: Query count: -1000 (-25%) Average time: 2.484 (-17%) --- Issue link: WILL BE INSERTED BY [boring-cyborg](https://github.com/kaxil/boring-cyborg) Make sure to mark the boxes below before creating PR: [x] - [X] Description above provides context of the change - [X] Commit message/PR title starts with `[AIRFLOW-NNNN]`. AIRFLOW-NNNN = JIRA ID<sup>*</sup> - [X] Unit tests coverage for changes (not needed for documentation changes) - [X] Commits follow "[How to write a good git commit message](http://chris.beams.io/posts/git-commit/)" - [X] Relevant documentation is updated including usage instructions. - [X] I will engage committers as explained in [Contribution Workflow Example](https://github.com/apache/airflow/blob/master/CONTRIBUTING.rst#contribution-workflow-example). <sup>*</sup> For document-only changes commit message can start with `[AIRFLOW-XXXX]`. --- 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). Read the [Pull Request Guidelines](https://github.com/apache/airflow/blob/master/CONTRIBUTING.rst#pull-request-guidelines) for more information.
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