GitHub user potiuk added a comment to the discussion:
sqlalchemy.exc.OperationalError during dag-processor
This means you should fix the instabilities of your system - either by looking
of your networking or database configuration (for example dropping the
connnections because it uses too much memory or similar) - you should look at
your networking configuration and logs and your database logs. There is not
much airflow can do if the DB connection is dropped in-the-middle. On the other
you, or whoever is a Deployment Manager for your installatoin (maybe even when
they run it as a service) are the right one to look at those issues.
GitHub link:
https://github.com/apache/airflow/discussions/30443#discussioncomment-11818925
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