SparkCore算子(實例)之---- 交集、差集、並集(intersection, subtract, union, distinct, subtractByKey)

1. 交集 intersecion 1.1 源碼web /** * Return the intersection of this RDD and another one. The output will not contain any duplicate * elements, even if the input RDDs did.//交集結果將會去重 * * @not
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