SparkCore算子(实例)之---- 交集、差集、并集(intersection, subtract, union, distinct, subtractByKey)

1. 交集 intersecion 1.1 源码web /** * Return the intersection of this RDD and another one. The output will not contain any duplicate * elements, even if the input RDDs did.//交集结果将会去重 * * @not
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