[KAFKA-17434] upgrade_test.py tests impossible upgrade scenarios

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.9.0
• Assignee: Colin McCabe
• Reporter: Colin McCabe
• Created: 27/Aug/24 23:54
• Updated: 29/Aug/24 19:52
• Resolved: 29/Aug/24 19:52

Description

Because of KIP-902 (Upgrade Zookeeper version to 3.8.2), it is not possible to upgrade from a Kafka version earlier than 3.5 to a version later than 3.5. Therefore, we should not test these upgrade scenarios in upgrade_test.py. They do happen to work sometimes, but only in the trivial case where we don't create topics or make changes during the upgrade (which would reveal the ZK incompatibility).

Issue Links

• links to: GitHub Pull Request #17024