格式a (K， (v, w))对spark rdd。

I have an rdd like this:

我有一个这样的rdd:

val custFile = sc.textFile("custInfo.txt").map(line => line.split('|'))

val custPrd = custFile.map(a => (a(0), ((a(1)), (a(2), a(3), a(4), a(5), a(6), a(7), a(8)))))

val custGrp = custPrd.groupByKey

custGrp.saveAsTextFile("custinfo2")
val cu