How to get the product of two RDDs?

Question

Am new to spark. I have two RDD's and want to generate resulted RDD on them as below.

val rdd1 =  Array(1, 2)
val rdd2 =  Array(a, b, c)

val resultRDD = [(1,a), (1,b), (1,c), (2,a), (2,b), (2,c)]

Can anyone help me on what transformations or actions I need to use to generate resultRDD like above. FYI, I am writing in scala.

EDIT

Thanks. spark cartesian works for me as below.

    val data = Array('a', 'b')
    val rdd1 = sc.parallelize(data)

    val data2 = Array(1, 2, 3)
    val rdd2 = sc.parallelize(data2)

    rdd1.cartesian(rdd2).foreach(println)

Answer 1

def cartesian[U](other: RDD[U])(implicit arg0: ClassTag[U]): RDD[(T, U)]

Return the Cartesian product of this RDD and another one, that is, the RDD of all pairs of elements (a, b) where a is in this and b is in other.

Doc here