HADOOP-9675. use svn:eol-style native for html to prevent line ending issues (Colin Patrick McCabe)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1512421 13f79535-47bb-0310-9956-ffa450edef68
HDFS-5083. Update the HDFS compatibility version range. Contributed by Kihwal Lee.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1512442 13f79535-47bb-0310-9956-ffa450edef68
svn merge -c 1512451 merging from trunk to branch-2 to fix HDFS-4993.

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merge -c 1512465 FIXES: HADOOP-9757. Har metadata cache can grow without limit (Cristina Abad via daryn)


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1512466 13f79535-47bb-0310-9956-ffa450edef68