Re: Processing Flexibility Between RDD and Dataframe API

2018-10-29 Thread Gourav Sengupta
Hi, I would recommend reading the book by Matei Zaharia. One of the main differentiating factors between Spark 1.x and subsequent releases has been optimization and hence dataframes, and in no way RDD is going away because dataframes are built on RDD's. The use of RDD's are allowed and is recommen

Re: Processing Flexibility Between RDD and Dataframe API

2018-10-29 Thread Jungtaek Lim
Just 2 cents on just one of contributors: while SQL semantic can express various use cases data scientists encounter, I also agree someone who are end users who are more familiar with code instead of SQL can feel it is not flexible. But counterless efforts have been incorporated into Spark SQL (an

Re: Processing Flexibility Between RDD and Dataframe API

2018-10-28 Thread Adrienne Kole
Thanks for bringing this issue to the mailing list. As an addition, I would also ask the same questions about DStreams and Structured Streaming APIs. Structured Streaming is high level and it makes difficult to express all business logic in it, although Databricks are pushing it and recommending f