Hello everyone, In May 2021 we added MsSQL as an experimental backend. PR https://github.com/apache/airflow/pull/9973 Mailing list announcement: https://lists.apache.org/thread/byx4czfyowwm3qy8c8p2o65vd53fyvsd
During this time we hoped it would become stable and widely adopted. To my taste MsSQL a backend has left a niche and is *not* worth the maintenance of it in our CI. Some data points: 1. Only 5 issues <https://github.com/apache/airflow/issues?q=is%3Aissue+label%3Abackend-mssql-experimintal+is%3Aopen> were reported on MsSQL as a backend which suggests it's not widely adopted. These issues also don't have much traffic. 2. None of the Airflow as service cloud vendors use it as a backend or expressed interest in it (to the best of my knowledge) 3. We had many PRs trying to fix issues related to MsSQL. To name a few: https://github.com/apache/airflow/pull/33265 https://github.com/apache/airflow/pull/32433 https://github.com/apache/airflow/pull/31815 each one required diagnostic and effort to address the problems (in some cases required also rebasing of all other PRs after fix was merged) I think that after 2+ years of experiment we can terminate it. Since this is experimental we can drop support for this feature as this is not considered a breaking change. *My Proposal:* Drop support for MsSQL as official/supported backend. WDYT? Elad Kalif
