刷题or源码链接

Hadoop权威指南的Github

https://github.com/tomwhite/hadoop-book

hadoopAPI

http://hadoop.apache.org/docs/current/api/

TopN之mapreduce

 http://www.mamicode.com/info-detail-1047670.html

 

刷SQL题网站

https://sqlzoo.net/wiki/SELECT_basics

https://blog.csdn.net/flycat296/article/details/63681089

 

leetcode源码GitHub链接

https://github.com/grandyang/leetcode　　　

 

mapreduce初级编程链接

https://www.cnblogs.com/xia520pi/archive/2012/06/04/2534533.html　

https://blog.csdn.net/zhongqi2513/article/details/78321664