potiuk commented on a change in pull request #20975: URL: https://github.com/apache/airflow/pull/20975#discussion_r798624913
########## File path: UPDATING.md ########## @@ -130,6 +130,12 @@ Previously, a task’s log is dynamically rendered from the `[core] log_filename A new `log_template` table is introduced to solve this problem. This table is synchronised with the aforementioned config values every time Airflow starts, and a new field `log_template_id` is added to every DAG run to point to the format used by tasks (`NULL` indicates the first ever entry for compatibility). +### XCom now define `run_id` instead of `execution_date` + +As a continuation to the TaskInstance-DagRun relation change started in Airflow 2.2, the `execution_date` columns on XCom has been removed from the database, and replaced by an [association proxy](https://docs.sqlalchemy.org/en/13/orm/extensions/associationproxy.html) field at the ORM level. If you access Airflow’s metadatabase directly, you should rewrite the implementation to use the `run_id` column instead. + +Note that Airflow’s metadatabase definition on both the database and ORM levels are considered implementation detail without strict backward compatibility guarantees. Review comment: +1 -- 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]
