基于MapReduce的处理过程示例—文档词频统计:WordCount 设有4组原始文本数据: Text 1: the weather is good Text 2: today is good Text 3: good weather is good Text 4: today has good weather 传统的串行处理方式(Java): 输出:good: 5; has: 1; is: 3; the: 1; today: 2; weather: 3 基于Map...