GitHub user ijuma opened a pull request: https://github.com/apache/kafka/pull/1704
KAFKA-4018: Streams causing older slf4j-log4j library to be packaged along with newer version This is a regression caused by 0bb1d3ae. After that commit, Streams no longer has a direct dependency on slf4j-log4j12, but zkclient has a dependency on an older version of slf4j-log4j12, so we get a transitive dependency on the older version. The fix is to simply exclude the undesired dependencies from the zkclient dependency. You can merge this pull request into a Git repository by running: $ git pull https://github.com/ijuma/kafka kafka-4018-streams-duplicate-slf4j-log4j Alternatively you can review and apply these changes as the patch at: https://github.com/apache/kafka/pull/1704.patch To close this pull request, make a commit to your master/trunk branch with (at least) the following in the commit message: This closes #1704 ---- commit 79ef53042dccf1604b68aa470ec6f62810d0c853 Author: Ismael Juma <ism...@juma.me.uk> Date: 2016-08-03T23:54:56Z MINOR: Streams causing older slf4j-log4j library to be packaged along with newer version ---- --- If your project is set up for it, you can reply to this email and have your reply appear on GitHub as well. If your project does not have this feature enabled and wishes so, or if the feature is enabled but not working, please contact infrastructure at infrastruct...@apache.org or file a JIRA ticket with INFRA. ---