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                :-: ![](https://img.kancloud.cn/13/7e/137e8d65d3faae13d3b884dc7a536ea9_1197x422.jpg) RDD、Dataset、DataFrame之間的相互轉換 ```scala // RDD -> Dataset val ds = rdd.toDS() // RDD -> DataFrame val df=rdd.toDF() // Dataset -> RDD val rdd = ds.rdd // DataFrame -> RDD val rdd = df.rdd // Dataset -> DataFrame val df = ds.toDF() // DataFrame -> Dataset val ds = df.toJSON val ds = df.as[T] ```
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