YARN-2125. Changed ProportionalCapacityPreemptionPolicy to log CSV in debug level. Contributed by Wangda Tan

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1601980 13f79535-47bb-0310-9956-ffa450edef68
MAPREDUCE-5920. Add Xattr option in DistCp docs. Contributed by Yi Liu.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1601983 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-10656. The password keystore file is not picked by LDAP group mapping. Contributed by Brandon Li

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1601985 13f79535-47bb-0310-9956-ffa450edef68