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大神您好,有个问题能否解答下 #22

@zdkzdk

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@zdkzdk

spark,父子RDD分区是一对多的关系,有没有可能是窄依赖???如果有可能,能否举个例子呢

为啥shuffle必须要落盘,直接在内存中不能进行数据重新分布吗???

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