[MapReduce_add_5] MapReduce 实现标签的生成与聚合

---

0. 说明

　　MapReduce 实现标签的生成与聚合

　　介绍 && 流程图 && 程序编写

---

 1. 介绍

【1.1 原始有效数据】

86913510    {"reviewPics":null,"extInfoList":[{"title":"contentTags","values":["午餐","分量适中"],"desc":"","defineType":0},{"title":"tagIds","values":["684","240"],"desc":"","defineType":0}],"expenseList":null,"reviewIndexes":[2],"scoreList":null}

 【1.2 流程图】

　　

---

2. 程序编写 

　　标签统计代码

---