kaxil commented on a change in pull request #9067:
URL: https://github.com/apache/airflow/pull/9067#discussion_r464053787
##########
File path: UPDATING.md
##########
@@ -322,6 +322,14 @@ We should default it as `true` to avoid confusion
In order to migrate the database, you should use the command `airflow db
upgrade`, but in
some cases manual steps are required.
+#### Unique conn_id in connection table
+
+Previously, Airflow allowed users to add more than one connection with the
same `conn_id` and on access it would choose one connection randomly. This
acted as a basic load balancing and fault tolerance technique, when used in
conjunction with retries.
+
+This behavior caused some confusion for users, and there was no clear evidence
if it actually worked well or not.
+
+Now the `conn_id` will be unique. If you already have duplicates your metadata
database, you will have to manage those duplicate connections before upgrading
the database.
Review comment:
```suggestion
Now the `conn_id` will be unique. If you already have duplicates in your
metadata database, you will have to manage those duplicate connections before
upgrading the database.
```
----------------------------------------------------------------
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
For queries about this service, please contact Infrastructure at:
[email protected]
