micrometer-metrics/micrometer

Integration test Kafka instrumentation against latest minor version

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#7233 opened on Feb 25, 2026

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help wantedtype: task

Description

Related and more important than https://github.com/micrometer-metrics/micrometer/issues/7232, we should be integration testing our instrumentation against the latest version of Kafka to ensure that our instrumentation works with the latest version despite being compiled against an older version. API could be removed or changed in breaking way in new major versions, so it is not guaranteed to work.

Contributor guide

Tech stack
javakafka
Domain
testingobservability
Issue type
test
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
half day
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
JavaKafkaIntegration testing
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
70
Research direction
Review the related issue #7232 for context. Examine existing integration tests for Kafka in the micrometer repository, likely under a module like micrometer core or micrometer observation test. Look for how other instrumentations are tested with integration tests (e.g., using testcontainers). Set up a Kafka test container and write tests that use the latest minor version of Kafka client.