See <https://builds.apache.org/job/kafka-trunk-jdk8/2524/display/redirect?page=changes>
- Build failed in Jenkins: kafka-trunk-jdk8 #2520 Apache Jenkins Server
- Build failed in Jenkins: kafka-trunk-jdk8 #2521 Apache Jenkins Server
- Build failed in Jenkins: kafka-trunk-jdk8 #... Apache Jenkins Server
- Build failed in Jenkins: kafka-trunk-jd... Apache Jenkins Server
- Jenkins build is back to normal : k... Apache Jenkins Server
