Kafka Connect's unit test failed with Unknown license as blow.
$ ./gradlew test
Unknown license: /home/kafka/code/kafka/connect/json/src/test/resources/connect-test.properties
FAILURE: Build failed with an exception.
Script '/home/kafka/code/kafka/gradle/rat.gradle' line: 63
- What went wrong:
Execution failed for task ':rat'.
> Found 1 files with unknown licenses.
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.
I think this is because connect-test.properties doesn't have license.