Hadoop安装
http://wiki.apache.org/hadoop/EclipsePlugIn
http://www.cnblogs.com/wayne1017/archive/2007/03/20/678724.html
http://savagegarden.javaeye.com/blog/860651
JAVA_HOME=/usr/lib/jvm/java/jdk1.6.0_10
CLASSPATH=.:$JAVA_HOME/lib
HADOOP_HOME=/home/hadoop/hadoop-0.21.0
PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:$JAVA_HOME/bin:$HADOOP_HOME/bin"