val words = Array ("one", "two", "two", "three", "three","three")val wordPairsRDD = sc.parallelize(words).map(word => (word,1) )wordCountsWithReduce = wordPairsRD
D:reduceByKey(_+_)上述语句的执行结果wordCountsWithReduce 中包含的元素是( )。
选项:
A:(“one”,3), (“two”,2), (“three”, 1)
B:(“one”,1), (“two”,2),(“three”,3)
C:(“one”, 1),(“two”,2), (“three”, 1)
D:(“one”, 1), (“two”,2), (“three”,2)
发布时间:2024-05-07 19:51:46