首先将源码转移到~/workspace下，目标文件夹为mahout-distribution-0.5
进入该目录，运行
mvn eclipse:eclipse
然后， 运行
sudo mvn -Declipse.workspace= eclipse:add-maven-repo
接着从eclipse->file->import->existing project into workspace，mahout-distribution-0.5目录导入，即可。
参考自 http://shuyo.wordpress.com/2011/02/01/mahout-development-environment-with-maven-and-eclipse-1/