ffinfo edited a comment on issue #4872: [AIRFLOW-4038] Restructure database queries on /home URL: https://github.com/apache/airflow/pull/4872#issuecomment-470598941 @XD-DENG: Almost, indeed the main thing is to switch from `provide_session` to `create_session`. Also the order of statements is changes a bit because dags_query was build up on multiple statements but in-between the error query was there. this is now grouped. About the switch from provide_session to create_session. Me and @Fokko did a little research and using create_session keeps less time a session locked to a scope. `@provide_session` on nested sessions can keep the session open for a long time while not really needed. Of course this is bigger then just this call but try to convert things where I can. Has targeting this method to remove the DagBag of the Webserver but I did notice that this call has no usage of DagBag. By this time I already changed the provide_session ;)
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