HDFS-4404. Create file failure when the machine of first attempted NameNode is down. Contributed by Todd Lipcon.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1442462 13f79535-47bb-0310-9956-ffa450edef68
HDFS-4344. dfshealth.jsp throws NumberFormatException when dfs.hosts/dfs.hosts.exclude includes port number. Contributed by Andy Isaacson.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1442466 13f79535-47bb-0310-9956-ffa450edef68
MAPREDUCE-4953. HadoopPipes misuses fprintf. Contributed by Andy Isaacson.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1442472 13f79535-47bb-0310-9956-ffa450edef68