Indicate if the database is been updated

[onzyone]

Description

I would like add a new flag to airflow db that will allow to check if the db is been updated.

Use case/motivation

When using Airflow in HA mode with a replica of 2 or more schedulers hosted within Kubernetes we are running into an issue where both of the scheduler pods try to upgrade the db.

Related issues

No response

Are you willing to submit a PR?

• Yes I am willing to submit a PR!

Code of Conduct

• I agree to follow this project's Code of Conduct

[boring-cyborg]

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