HDFS-4415. HostnameFilter should handle hostname resolution failures and continue processing. Contributed by Robert Kanter.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1434952 13f79535-47bb-0310-9956-ffa450edef68
YARN-331. Fill in missing fair scheduler documentation. (sandyr via tucu)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1434991 13f79535-47bb-0310-9956-ffa450edef68
MAPREDUCE-4923. Add toString method to TaggedInputSplit. (sandyr via tucu)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1434994 13f79535-47bb-0310-9956-ffa450edef68
YARN-302. Fair scheduler assignmultiple should default to false. (sandyr via tucu)

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