mapReduce shuffle理解 - yingziaiai/SetupEnv GitHub Wiki
http://www.tuicool.com/articles/7R3uMf
http://blog.csdn.net/lifuxiangcaohui/article/details/22675437
http://lib.csdn.net/base/hadoop
http://www.aboutyun.com/thread-7682-1-1.html
https://my.oschina.net/u/872123/blog/122149
http://blog.sina.com.cn/s/blog_4438ac090101qfuh.html
http://www.aboutyun.com/thread-7555-1-1.html
http://www.superwu.cn/2013/08/18/492/
http://zengzhaozheng.blog.51cto.com/8219051/1379271/
以上是二次排序
http://www.cnblogs.com/xuxm2007/archive/2011/09/03/2165805.html
http://blog.csdn.net/baolibin528/article/details/44261285
http://www.cnblogs.com/felixzh/p/4680808.html
http://www.cnblogs.com/end/archive/2013/01/18/2866001.html
http://blog.csdn.net/twsghxs/article/details/46484407
http://www.aboutyun.com/thread-6945-1-1.html
http://blog.sina.com.cn/s/blog_69d9bff301019wqw.html
http://www.cnblogs.com/shipengzhi/articles/2487429.html
http://blog.csdn.net/HADOOP_83425744/article/details/49560583
http://www.open-open.com/lib/view/open1453097241308.html
http://blog.csdn.net/woshiwanxin102213/article/details/40503519