Скачать или смотреть hadoop mapreduce development under windows 7

http://voyiger.blogspot.com
http://github.com/voyiger

install jdk 1.6+, eclipse(j2se) is enough, maven plug for eclipse, google "maven plugin for eclipse update site", or if you install latest eclipse(kepler) which has maven bundled.

you may run into the following error message:

java.io.IOException: Failed to set permissions of path: \tmp\hadoop-XY1267\mapred\staging\XY1267625012668\.staging to 0700

download patch-hadoop_7682-1.0.x-win from the following url

https://github.com/congainc/patch-had...
add this jar file to eclipse java project classpath

in your program, add the following configuration:

job.getConfiguration().set("fs.file.impl", "com.conga.services.hadoop.patch.HADOOP_7682.WinLocalFileSystem");

now you are ready to run map reduce inside eclipse, on windows! you don't even need to install hadoop onto your pc!