Sample project to highlight possible deserialization issue with spring-kafka 3.1.3

Issue

When using spring-boot 3.2.3 / spring-kafka 3.1.2 the tests in this project work as expected: an invalid event is handled by the FailedDeserializationFunction, however when upgrading to 3.2.4 this is no longer the case and a faulty event leads to an endless loop.

Testing

spring-boot 3.2.3 / spring-kafka 3.1.2

Run the app's test e.g. by calling ./mvnw clean verify or from within an IDE.

Result: both tests pass

spring-boot 3.2.4 / spring-kafka 3.1.3

Update the spring-boot-starter-parent in the pom.xml to 3.2.4 and run the app's test e.g. by calling ./mvnw clean verify or from within an IDE.

Result: 1 test passes / 1 test fails

The deserIssue test fails: FailedDeserializationFunction is still called, but a DeadLetterPublishingRecoverer tries to send the faulty event to test-topic-kafka-dlt-retry-0 which consistently fails and leads to an infinite loop.

Fix

Question: https://stackoverflow.com/questions/78207314/possible-deserialization-issue-with-spring-kafka-3-1-3/ includes the fix: use org.apache.kafka.common.header.internals.RecordHeader instead of byte[] for the exception header.