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uniont #15

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FS1360472174 opened this issue Sep 30, 2017 · 1 comment

Owner

FS1360472174 commented Sep 30, 2017

JavaRDD 可以union
JavaPairRdd 不可以，只能Join

Owner Author

FS1360472174 commented Oct 9, 2017

Leftjoin ,
一个Integer 的 id 与一个String 转化为Integer的数据，做left join ，冒出来一个String 类型的id

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