Github user rmetzger commented on the pull request: https://github.com/apache/flink/pull/305#issuecomment-70424921 Maybe we should offer users both options: register and default serializer. In some cases, you don't know the exact types and you want to go for a default serializer. I agree that we should in each case register the class.
--- If your project is set up for it, you can reply to this email and have your reply appear on GitHub as well. If your project does not have this feature enabled and wishes so, or if the feature is enabled but not working, please contact infrastructure at infrastruct...@apache.org or file a JIRA ticket with INFRA. ---