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你认为用 Java、streaming、pipe 方式开发 map/reduce ，各有哪些优点

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使用map,reduce函数，将字符串数组[‘1’,’2’,’3’,’4’,’5’,’6’,’7’,’8’,’9’]转化为数字123456789. Java import java.util.List; import java.util.Arrays; import java.util.stream...

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C#、JAVA操作Hadoop（HDFS、Map/Reduce）真实过程概述。组件、源码下载。无法解决：Response status code does not indicate success: 500。

一、Hadoop环境配置概述三台虚拟机，操作系统为：Ubuntu 16.04。 Hadoop版本：2.7.2 N...

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