HADOOP-10622. Shell.runCommand can deadlock. Contributed by Gera Shegalov


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1602033 13f79535-47bb-0310-9956-ffa450edef68
HDFS-6379. HTTPFS - Implement ACLs support. (yoderme via tucu)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1602040 13f79535-47bb-0310-9956-ffa450edef68
YARN-2148. TestNMClient failed due more exit code values added and passed to AM (Wangda Tan via bikas)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1602043 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-10376. Refactor refresh*Protocols into a single generic refreshConfigProtocol. (Contributed by Chris Li)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1602055 13f79535-47bb-0310-9956-ffa450edef68