Thank you Kai. I have finished with your idea . The first job do the tokenizing and count words. The second one do the sorting. thanks. ----- 原始邮件 ----- 发件人:Kai Voigt <k...@123.org> 收件人:user@hadoop.apache.org 主题:Re: How to sort in a WordCount 日期:2014年08月17日 12点51分