See <https://builds.apache.org/job/Hadoop-Common-trunk/2102/changes>
- Build failed in Jenkins: Hadoop-Common-trunk #2097 Apache Jenkins Server
- Build failed in Jenkins: Hadoop-Common-trunk #2... Apache Jenkins Server
- Build failed in Jenkins: Hadoop-Common-trun... Apache Jenkins Server
- Build failed in Jenkins: Hadoop-Common-... Apache Jenkins Server
- Build failed in Jenkins: Hadoop-Com... Apache Jenkins Server
- Jenkins build is back to norma... Apache Jenkins Server