How to handle "The node does not support GET_TELEMETRY_SUBSCRIPTIONS" in Kafka Client logfiles

Description

Java client 3.7.0 or newer might print the following Message in DEBUG level log:

org.apache.kafka.common.errors.UnsupportedVersionException: The node does not support GET_TELEMETRY_SUBSCRIPTIONS

Applies To

Kafka Java clients 3.7.0+

Confluent Platform before 7.7.0

Cause

This behaviour is related to the upcoming improvement KIP-714, where the client pushes telemetry to Kafka brokers. The message occurs if the broker is running version prior to 7.7.0 and/or a Zookeeper deployment, that isn't yet ready to receive the data sent by the client.

Resolution

1. Upgrade the Broker: Ensure that the broker is running Confluent Platform version 7.7+ and Kraft enabled
2. Disregard the warning
3. Disable Telemetry Push: If upgrading is not immediately possible, disable the telemetry push feature by setting enable.metrics.push = false in the client configuration