TypeError: SqlAlchemySessionInterface.__init__() missing 6 required positional arguments

[habibutsu]

Apache Airflow version

2.8.0

If "Other Airflow 2 version" selected, which one?

No response

What happened?

airflow is not started

What you think should happen instead?

No response

How to reproduce

Install the latest version of Airflow. In the new release Flask-Session==0.6.0 has introduced backward-incompatible changes

Operating System

Linux/docker

Versions of Apache Airflow Providers

No response

Deployment

Official Apache Airflow Helm Chart

Deployment details

No response

Anything else?

No response

Are you willing to submit PR?

• Yes I am willing to submit a PR!

Code of Conduct

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

[Taragolis]

We noticed that when if failed in our CI and this is fine when new version package breaks something.

• Temporary we upper bound limit it by Limit flask-session to <0.6 #36895
• The target solution could be tracked in: Support for Flask-sesssion 0.6.0+ #36897

For end users there the base recommendation is follow:

• Installation of Airflow™
• [Reminder] How to reproducibly install Airflow

[SaadTPTW]

the use of the installation on the official website using the constraints.txt + the command airflow standalone solve the problem

[potiuk]

Use constaints to install airflow : https://airflow.apache.org/docs/apache-airflow/stable/installation/installing-from-pypi.html

[aiqc]

@potiuk thanks. couldn't the airflow and python versions be inferred at runtime instead of pushing that complexity onto the user? in situations where a constraint file(s) is not defined, couldn't an error be raised?

[potiuk]

@potiuk thanks. couldn't the airflow and python versions be inferred at runtime instead of pushing that complexity onto the user? in situations where a constraint file(s) is not defined, couldn't an error be raised?

No and No

[potiuk]

And the reason for both is explained in the link I posted. You can also watch my presentation from Airlfow Summit if you want to know all the technical details https://airflowsummit.org/sessions/2023/mastering-dependencies-the-airflow-way/

Those two sources go into deep dive why the answer for both your questions is no.