...

• build.gradle

Proposed Changes

...

1. Upgrade slf4j from 1.7.36 to 2.0.9+

...

1. Add a new system variable to run-class (sh & bat) script to define -Dslf4j.provider. By default we use org.slf4j.reload4j.Reload4jServiceProvider

...

1. Add other slf4j backend binding dependencies

...

Compatibility, Deprecation, and Migration Plan

Make sure users code works well when they provide their own slf4j jars

Ex : If slf4j-api is upgraded to 2.0.9, we also provide the compatible binding jars of a few backends like logback, log4j, reload4j, commons logging in kafka itself. As we introduce this change in major version 4.0.0, this should be ok for users to upgrade their backend dependencies.

Or we can also provide the backend dependencies.

Test Plan

Describe in few sentences how the KIP will be tested. We are mostly interested in system tests (since unit-tests are specific to implementation details). How will we know that the implementation works as expected? How will we know nothing broke?

...