HADOOP-9652.  RawLocalFs#getFileLinkStatus does not fill in the link owner and mode.  (Andrew Wang via Colin Patrick McCabe)

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HDFS-4816. transitionToActive blocks if the SBN is doing checkpoint image transfer. (Andrew Wang)

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HADOOP-9381. Merge 1514089 from trunk

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HDFS-5051. Merge 1514110 from trunk

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HDFS-5068. Convert NNThroughputBenchmark to a Tool to allow generic options. Contributed by Konstantin Shvachko.

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