Udacity,也就是优达上有两门课程我觉得讲的很好:
Deploying a Hadoop Cluster
http://cn.udacity.com/course/deploying-a-hadoop-cluster--ud1000
Hadoop 和 MapReduce 入门
http://cn.udacity.com/course/intro-to-hadoop-and-mapreduce--ud617
此外还有一个MapReduce中文版的讲解也推荐给大家
http://wenku.baidu.com/link?url=JNDrDCku4TKMMdbPa7-I2V_YnwwaCzFLHAmoraZdU81I8h0ApAKwsS7Uu-F492loXrUJ_3XZOnTTubcOfpwmZecI4PoG9GvDXtIxH4pIlMq