Description of problem:

I noticed that the version of the lib sarama is 1.23.1 (2019-07-22), which by default uses a message format version that is no longer supported in Kafka 4 So, as it is now, sending to a Kafka 4.1 generates the following errors:

2025-12-17 13:00:24 ERROR [data-plane-kafka-network-thread-1-PLAIN-9092-PLAINTEXT-4] Processor:79 - Closing socket for 10.0.1.2:9092-10.129.2.17:53764-4-834 because of error org.apache.kafka.common.errors.UnsupportedVersionException: Received request for api with key 0 (Produce) and unsupported version 0 2025-12-17 13:00:24 ERROR [data-plane-kafka-network-thread-1-PLAIN-9092-PLAINTEXT-4] Processor:79 - Exception while processing request from 10.0.1.2:9092-10.0.1.20:53764-4-834 org.apache.kafka.common.errors.UnsupportedVersionException: Received request for api with key 0 (Produce) and unsupported version 0 2025-12-17 13:00:24 ERROR [data-plane-kafka-network-thread-1-PLAIN-9092-PLAINTEXT-5] Processor:79 - Closing socket for 10.0.1.2:9092-10.0.1.20:53774-5-834 because of error org.apache.kafka.common.errors.UnsupportedVersionException: Received request for api with key 0 (Produce) and unsupported version 0

Version-Release number of selected component (if applicable):

all

How reproducible:

Use Kafka4 as kafka sink

Steps to Reproduce:

1. Configure event router against a Kafka4

Actual results:

Event router does not sent events to kafka

Expected results:

Event router does sending events to kafka

Additional info: