ERROR - Plugin class loader for connector: was not found.

[valdar]

Tests logs have this error:

2020-04-03 17:10:52,295 [main           ] ERROR org.apache.kafka.connect.runtime.isolation.DelegatingClassLoader - Plugin class loader for connector: 'org.apache.camel.kafkaconnector.CamelSinkConnector' was not found. Returning: org.apache.kafka.connect.runtime.isolation.DelegatingClassLoader@78aa7b77

it seems to

indicates that the connector is getting loaded in the same classloader as the connect worker, probably because the connector is in the Kafka lib directory. I would suggest moving the connector out of that directory to avoid this exception and have it loaded only through the plugin.path instead.
(see confluentinc/kafka-connect-jdbc#766)

it seems not to be an issue for the tests themselves, still better to investigate.

[valdar]

@orpiske any idea on this one?

[orpiske]

@valdar I think that makes sense and it goes in line with the warnings I saw when building the containers for this. It doesn't seem to affect the test, but it would be better and safer not to have it. I will have time next week and will take a look at how we can get rid of it.

[orpiske]

@valdar it might be a tricky one to solve, though. I think we will need to find a way to isolate the embedded runner from the rest of the test code so that the runner itself is not on the same class loader. I don't really know how this black magic would work, so I'll have to research.

[valdar]

@orpiske tnx! Might be on the same line of #24

[valdar]

fixed with #138