http://4hadooper.blogspot.tw/2014/03/ccd-410-questions.htm
https://developer.yahoo.com/hadoop/tutorial/
http://www.fromdev.com/2010/12/interview-questions-hadoop-mapreduce.html
http://hadoopcerti.blogspot.tw/2014/06/cloudera-certification-question-hadood.html
https://developer.yahoo.com/hadoop/tutorial/module4.html
原文:http://www.cnblogs.com/huaxiaoyao/p/4449287.html