[KAFKA-9476] Worker throws error "Scanner SubTypeScanner was not configured" when loading invalid jar

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Duplicate
• Assignee: Chia-Ping Tsai
• Reporter: Chia-Ping Tsai
• Created: 26/Jan/20 11:42
• Updated: 15/Mar/20 13:07
• Resolved: 15/Mar/20 13:07

Description

org.reflections 0.9.12 (this commit updates org.reflections from 0.9.11 to 0.9.12) has a issue which throws an error when getting sub classes from invalid plugin (jar file). By contrast, org.reflections 0.9.11 does not. It is a breaking change, and Kafka Worker is impacted. The unit test in attached patch works with org.reflections 0.9.11 but it fails with org.reflections 0.9.12.

I noticed this issue when running IT of my project with latest Kafka. It is not a critical breaking but it would be better to keep the behavior compatibility. Hence, it seems to me that we can revert the update of org.reflections and then wait for the issue.

 

 

Issue Links

• is duplicated by: KAFKA-9712 Reflections library 0.9.12 introduced in 2.5 causes regression scanning for plugins on plugin_path