I proposed dropping support for Hadoop 1.x in the Spark 2.0 email, and I think everybody is for that.
https://issues.apache.org/jira/browse/SPARK-11807 Sean suggested also dropping support for Hadoop 2.2, 2.3, and 2.4. That is to say, keep only Hadoop 2.6 and greater. What are the community's thoughts on that?
