java实现的倒排索引，非常实用，对初学者来说-java Interview Index

利用hadoop中的map/reduce框架实现对文件的倒排索引，在搜索引擎中对网页的分类很多采用这种方法-Using map/reduce in the Hadoop framework to achieve the inverted file index, in the search engine on the web page of a lot of classification using this method