Where Is DataJoinMapperBase?

[Bing Li]

Hi, all,

I am starting to learn advanced Map/Reduce. However, I cannot find the
class DataJoinMapperBase in my downloaded Hadoop 1.0.0 and 0.20.2. So I
searched on the Web and get the following link.

     http://www.java2s.com/Code/Jar/h/Downloadhadoop0201datajoinjar.htm

>From the link I got the package, hadoop-0.20.1-datajoin.jar. My question is
why the package is not included in Hadoop 1.0.0 and 0.20.2? Is the correct
way to get it?

Thanks so much!

Best regards,
Bing