spark git commit: [SPARK-2075][Core] Make the compiler generate same bytes code for Hadoop 1.+ and Hadoop 2.+

Repository: spark Updated Branches: refs/heads/master c6a3c0d50 - 6ee6aa70b [SPARK-2075][Core] Make the compiler generate same bytes code for Hadoop 1.+ and Hadoop 2.+ `NullWritable` is a `Comparable` rather than `Comparable[NullWritable]` in Hadoop 1.+, so the compiler cannot find an

spark git commit: [SPARK-2075][Core] Make the compiler generate same bytes code for Hadoop 1.+ and Hadoop 2.+

Repository: spark Updated Branches: refs/heads/branch-1.2 4346a2ba1 - 665653d24 [SPARK-2075][Core] Make the compiler generate same bytes code for Hadoop 1.+ and Hadoop 2.+ `NullWritable` is a `Comparable` rather than `Comparable[NullWritable]` in Hadoop 1.+, so the compiler cannot find an