题目内容
(请给出正确答案)
[单选题]
RDD有Transformation和Action算子,下列属于Action算子的是?()
A.map
B.saveAsTextFile
C.Filter
D.reduceByKey
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A.map
B.saveAsTextFile
C.Filter
D.reduceByKey
A.map
B.filter
C.group By
D.count
A.contributes
B.causes
C.helps
D.promotes
A.epidemic
B.enthusiastic
C.equivalent
D.essential