Dataframe sample in Apache spark | Scala

Question

I\'m trying to take out samples from two dataframes wherein I need the ratio of count maintained. eg

df1.count() = 10
df2.count() = 1000

noOfSamples = 10
         


        

Answer 1

May be you want to try below code..

val splits = data.randomSplit(Array(0.7, 0.3))
val (trainingData, testData) = (splits(0), splits(1))