HADOOP-9470. eliminate duplicate FQN tests in different Hadoop modules (Ivan A. Veselovsky via daryn)


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1530667 13f79535-47bb-0310-9956-ffa450edef68
HDFS-4510. Cover classes ClusterJspHelper/NamenodeJspHelper with unit tests. Contributed by Andrey Klochkov.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1530669 13f79535-47bb-0310-9956-ffa450edef68
MAPREDUCE-5569. FloatSplitter is not generating correct splits. Contributed by Nathan Roberts


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1530683 13f79535-47bb-0310-9956-ffa450edef68
Merge remote branch 'origin/trunk' into trunk-gd
Merge remote branch 'origin/trunk-gd' into fb-xxx-hadoop-auth-kerberos-realm-trunk-gd