Hi all, I'm trying to avoid dynamic class loading my user code [0] due to a suspected classloading leak, but when I put my application jar into /lib instead of /usrlib, I run into the following error:
``` The main method caused an error: The implementation of the FlinkKafkaConsumer is not serializable. The object probably contains or references non serializable fields. ``` which specifically seems to be caused by ``` java.io.NotSerializableException: org.apache.avro.Schema$LongSchema ``` What's curious to me about this is the error does not occur when we use dynamic classloading and put our application jar into /usrlib. Any ideas what's going on? It would seem to us that the method of loading the classes shouldn't impact whether or not something is serialized. Appreciate any help, thanks! [0] https://ci.apache.org/projects/flink/flink-docs-release-1.13/docs/ops/debugging/debugging_classloading/#avoiding-dynamic-classloading-for-user-code
