HDFS-6411. nfs-hdfs-gateway mount raises I/O error and hangs when a unauthorized user attempts to access it. Contributed by Brandon Li

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1597895 13f79535-47bb-0310-9956-ffa450edef68
YARN-2105. Fix TestFairScheduler after YARN-2012. (Ashwin Shankar via Sandy Ryza)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1597902 13f79535-47bb-0310-9956-ffa450edef68