董西城的博客 http://dongxicheng.org/
开放数据集合分享 http://qing.blog.sina.com.cn/1641422615/61d61f1733003qea.html.
杨尚川的博客 http://yangshangchuan.iteye.com/category/305753
数据倾斜问题 http://sishuok.com/forum/blogPost/list/0/6229.html
http://shiyanjun.cn/