Optimal solution for getting the header from CSV with Spark

[Spico Florin]

Hello!

I would like to know what is the optimal solution for getting the header
with from a CSV file with Spark? My aproach was:

def getHeader(data: RDD[String]): String = {
data.zipWithIndex().filter(_._2==0).map(x=>x._1).take(1).mkString("") }

Thanks.