Hi, Maybe you could post your code/logic for doing this. One way would be to set a flag once your criteria is met and emit keys based on the flag.
Thanks and Regards, Sonal 2009/12/5 Gang Luo <lgpub...@yahoo.com.cn> > Hi all, > I got a tricky problem. I input a small file manually to do some filtering > work on each line in map function. I check if the line satisfy the constrain > then I output it, otherwise I return, without doing any other work below. > > For the map function will be called on each line, I think the logic is > correct. But it doesn't work like this. If there are 5 line for a map task, > and only the 2nd line satisfies the constrain, then the output will be line > 2, 3, 4, and 5. If the 3rd line satisfies, then output will be line 3, 4, 5. > It seems that once a map task meet the first satisfying line, the filter > doesn't work for following lines. > > It is interesting problem. I am checking it now. I also hope someone could > give me some ideas on this. Thanks. > > > -Gang > > > ___________________________________________________________ > 好玩贺卡等你发，邮箱贺卡全新上线！ > http://card.mail.cn.yahoo.com/ >
