How to convert DataFrame to RDD in Scala?

Question

Can someone please share how one can convert a dataframe to an RDD?

Answer 1

Use df.map(row => ...) to convert the dataframe to a RDD if you want to map a row to a different RDD element. For example

df.map(row => (row(1), row(2)))

gives you a paired RDD where the first column of the df is the key and the second column of the df is the value.