...

• Tests to ensure the backward compatibility of the ProductionExceptionHandler class
• Tests to ensure that default exception handlers are sending record to the DLQ topic if the DLQ topic name is set
• Ensure that failure to send the DLQ record kills the StreamThread
• Ensure that punctuator triggered exceptions are producing the expected payload

Rejected Alternatives

• Sending multiple DLQ record for a single issue.
• Managing DeadLetterQueue directly in the DSL by extending the KStreams interface.
• Providing no default implementation to build the Dead letter queue record and delegating this task to the user.
• Only providing exception and metadata information in the default DLQ implementation.
• Adding a new interface, that could be overload by the user, to build the DLQ record.

...