HDFS-4382. Fix typo MAX_NOT_CHANGED_INTERATIONS. Contributed by Ted Yu.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1431726 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-8419. Fixed GzipCode NPE reset for IBM JDK. (Yu Li via eyang)


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1431739 13f79535-47bb-0310-9956-ffa450edef68
HADOOP-8419. Fixed GzipCode NPE reset for IBM JDK. (Yu Li via eyang)


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1431740 13f79535-47bb-0310-9956-ffa450edef68
HDFS-4377. Some trivial DN comment cleanup. Contributed by Eli Collins


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1431753 13f79535-47bb-0310-9956-ffa450edef68