Hi, Well I would not assume anything myself. If you want to order it do it explicitly.
Let us take a simple case by creating three DFs based on existing tables val s = HiveContext.table("sales").select("AMOUNT_SOLD","TIME_ID","CHANNEL_ID") val c = HiveContext.table("channels").select("CHANNEL_ID","CHANNEL_DESC") val t = HiveContext.table("times").select("TIME_ID","CALENDAR_MONTH_DESC") now let us join these tables val rs = s.join(t,"time_id").join(c,"channel_id").groupBy("calendar_month_desc","channel_desc").agg(sum("amount_sold").as("TotalSales")) And do ab order explicitly val rs1 = rs.*orderBy* ("calendar_month_desc","channel_desc").take(5).foreach(println) HTH Dr Mich Talebzadeh LinkedIn * https://www.linkedin.com/profile/view?id=AAEAAAAWh2gBxianrbJd6zP6AcPCCdOABUrV8Pw <https://www.linkedin.com/profile/view?id=AAEAAAAWh2gBxianrbJd6zP6AcPCCdOABUrV8Pw>* http://talebzadehmich.wordpress.com *Disclaimer:* Use it at your own risk. Any and all responsibility for any loss, damage or destruction of data or any other property which may arise from relying on this email's technical content is explicitly disclaimed. The author will in no case be liable for any monetary damages arising from such loss, damage or destruction. On 29 June 2016 at 14:32, Jestin Ma <jestinwith.a...@gmail.com> wrote: > If it’s not too much trouble, could I get some pointers/help on this? (see > link) > > http://stackoverflow.com/questions/38085801/can-dataframe-joins-in-spark-preserve-order > > -also, as a side question, do Dataframes support easy reordering of > columns? > > Thank you! > Jestin >