HDFS-4337. Backport HDFS-4240: For nodegroup-aware block placement, when a node is excluded, the nodes in the same nodegroup should also be excluded.  Contributed by Meng Gong


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-1@1427762 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-9174. TestSecurityUtil fails with Open JDK 7. Contributed by Arpit Agarwal.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-1@1428102 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-9175. TestWritableName fails with Open JDK 7. Contributed by Arpit Agarwal.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-1@1428105 13f79535-47bb-0310-9956-ffa450edef68
MAPREDUCE-2217. The expire launching task should cover the UNASSIGNED task. (schen and kkambatl via tucu)

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MAPREDUCE-4909. TestKeyValueTextInputFormat fails with Open JDK 7 on Windows. Contributed by Arpit Agarwal.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-1@1428620 13f79535-47bb-0310-9956-ffa450edef68
HDFS-4355. TestNameNodeMetrics.testCorruptBlock fails with open JDK7. Contributed by Brandon Li.

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