摘要：
一,创建Dataframe scala> val df = sc.parallelize(Seq( | | (0,"cat26",30.9), | | (1,"cat67",28.5), | | (2,"cat56",39.6), | | (3,"cat8",35.6))).toDF("Hour", 阅读全文
posted @ 2021-04-27 17:09
船长博客
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