This has been failing with:
[ERROR] /home/jenkins/jenkins-slave/workspace/HBase-0.94-security-on-Hadoop-23/trunk/src/main/java/org/apache/hadoop/hbase/zookeeper/ZKUtil.java:[41,53] cannot find symbol [ERROR] symbol : class KerberosUtil [ERROR] location: package org.apache.hadoop.security.authentication.util
I'd say we either retire that jenkins build or fix the issue.
There's https://issues.apache.org/jira/browse/HBASE-7833. According to the conversations in there I'd say let's kill this jenkins build.