In the mapper of this job, I get something I am interested in for each line and then output all of them. So the number of map input records is equal to the map output records. Actually, I am doing semi join in this job. There is no failure during execution.
-Gang ----- 原始邮件 ---- 发件人： Todd Lipcon <[email protected]> 收件人： [email protected] 发送日期： 2009/12/10 (周四) 4:43:52 下午 主 题： Re: Re： Re： map output not euqal to reduce input On Thu, Dec 10, 2009 at 1:15 PM, Gang Luo <[email protected]> wrote: > Hi Todd, > I didn't change the partitioner, just use the default one. Will the default > partitioner cause the lost of the records? > > -Gang > Do the maps output data nondeterministically? Did you experience any task failures in the run of the job? -Todd ___________________________________________________________ 好玩贺卡等你发，邮箱贺卡全新上线！ http://card.mail.cn.yahoo.com/
