单选(2分)Val words = Array("one", "two", "two", "three", "three", "three") val wordPairsRDD = sc.parallelize(words).map(word => (word, 1))val wordCountsWithGroup = wordPairsRD
D: groupByKey().map(t => (t._1, t._2.sum))上述语句的执行结果wordCountsWithGroup中包含的元素是:
选项:
A: (“one”,3),(“two”,2),(“three”,1)
B: (“one”,1),(“two”,1),(“three”,1)
C: (“one”,1),(“two”,2),(“three”,1)
D: (“one”,1),(“two”,2),(“three”,3)
发布时间:2024-05-07 19:51:46