vikramkoka opened a new issue #12769:
URL: https://github.com/apache/airflow/issues/12769


   Following up on the dev call on 30th of November, there was a clear desire 
expressed for documentation around the database upgrade process from Airflow 
1.10.14 (or equivalent) to Airflow 2.0. Though the upgrade process is 
conceptually no different from a regular 1.10.x to a 1.10.x+1 release, the fact 
that there are significant known database changes may raise concerns in the 
minds of Airflow users as part of the upgrade. 
   
   To ease their concerns, the following questions should ideally be answered 
as part of the documentation specifically either as part of the "Upgrading to 
2.0 document" or linked from there. 
   Q 1. Is there anything "special" which I need to be done to upgrade from 
1.10.x to 2.0 with respect to the database? 
   Ans. I don't believe so, other than the normal upgrade checks. 
   
   Q 2. How long should I expect this database upgrade expected to take? 
   Ans. I am not quite sure how to answer this since it depends on the data. We 
can possibly share sample times based on tested data sets. 
   
   Q 3. Can I do something to reduce the database upgrade time? 
   Ans. A couple of options here. One possibility is to recommend the 
maintenance DAGs to be run to archive / delete older task history, xcom data, 
and equivalent. Another possibility is to provide a script for them to run as 
part of the Airflow project distribution, possibly part of upgrade check 
scripts. 
   


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