svn merge -c 1602033 FIXES: HADOOP-10622. Shell.runCommand can deadlock. Contributed by Gera Shegalov


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1602034 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/branches/branch-2@1602042 13f79535-47bb-0310-9956-ffa450edef68
Merge 1602043 from trunk to branch-2 for 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/branches/branch-2@1602045 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-10376: Merging r1602055 from trunk to branch-2.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1602057 13f79535-47bb-0310-9956-ffa450edef68