Hi community, Currently we have three spark related module in carbondata(spark 1.5, 1.6, 2.1), the project has become more and more difficult to maintain and has many redundant code. I propose to stop supporting spark 1.5 &1.6 and focus on spark 2.1(2.2). That will keep the project clean and simple for maintenance. Maybe we can provide some key patch to old version. But new features could support spark2 only. Any ideas?
Thanks & Regards, Lionel Cao
