Chia-Ping Tsai created KAFKA-9476:
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Summary: the error "Scanner SubTypeScanner was not configured"
caused by invalid jar when starting worker
Key: KAFKA-9476
URL: https://issues.apache.org/jira/browse/KAFKA-9476
Project: Kafka
Issue Type: Bug
Reporter: Chia-Ping Tsai
Assignee: Chia-Ping Tsai
org.reflections 0.9.12 (this
[commit|https://github.com/apache/kafka/commit/a024e679c7207aee2242d72aef53dc441c60ca27]
updates org.reflections from 0.9.11 to 0.9.12) has a
[issue|https://github.com/ronmamo/reflections/issues/273] 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|https://github.com/ronmamo/reflections/issues/273].
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