Hello folks, I have fallen into this bad problem with the classpath of Sinks (and Functions in general).
the short version of the story is that I cannot find a way to manipulate an org.apache.avro...GenericRecord returned by org.apache.pulsar.GenericRecord.getNativeObject() This is because in the class path of 2.9.0 (and 2.8.0) we do not have org.apache.avro anymore. If you add it to the NAR you get a ClassCastException. If you do not add it you get a ClassNotFound. More context here: https://github.com/apache/pulsar/issues/11274 My proposal is to add "AVRO" and "Jackson" to the available libraries in the classpath. Because without them it is not possible to manipulate of the "Native" objects returned by GenericRecord.getNativeObject(). I guess that the problem is also for NativeProtobuf and probably for Schema.getNativeSchema() Enrico