[2/2] incubator-systemml git commit: [SYSTEMML-776] Upgrade Spark version

[SYSTEMML-776] Upgrade Spark version Switched DataFrame to Dataset, switched Iterable to Iterator, and updated constructors for Spark 2.0.2. Closes #340. Project: http://git-wip-us.apache.org/repos/asf/incubator-systemml/repo Commit: http://git-wip-us.apache.org/repos/asf/incubator-systemml/co

[1/2] incubator-systemml git commit: [SYSTEMML-776] Upgrade Spark version

Repository: incubator-systemml Updated Branches: refs/heads/master 627fdbe2d -> a4c7be783 http://git-wip-us.apache.org/repos/asf/incubator-systemml/blob/a4c7be78/src/main/java/org/apache/sysml/runtime/instructions/spark/utils/RDDConverterUtils.java --