It’s my first Kafka program. From a kafka_2.13-3.1.0 instance, I created a Kafka topic poids_garmin_brut and filled it with this csv: And at anytime now, before or after running the program I’ll show, its content can be displayed by a kafka-console-consumer command: Here is the Java program, based on org.apache.kafka:kafka-streams:3.1.0 dependency, extracting this topic as a stream: But, while the