Setup Single-Node(Standalone) Hadoop

* Prerequisite

- Ubuntu Linux 11.10

1. JDK 1.6, must be installed

- download JDK   ( http://www.oracle.com/technetwork/java/javase/downloads/index.html , 32bit, tar.gz )

- uncompress JDK

$  tar xvf jdk-7u3-linux-i586.tar.gz

- move the JDK directory

$ sudo mv ./jdk1.7.0_03 /usr/lib/jvm/jdk1.7.0

- Create symbolic link for java

$ sudo update-alternatives --install "/usr/bin/java" "java" "/usr/lib/jvm/jdk1.7.0/bin/java" 1

$ sudo update-alternatives --install "/usr/bin/javac" "javac" "/usr/lib/jvm/jdk1.7.0/bin/javac" 1

$ sudo update-alternatives --install "/usr/bin/javaws" "javaws" /usr/lib/jvm/jdk1.7.0/bin/javaws" 1

- Configure basic java

$ sudo update-alternatives --config java

$ sudo update-alternatives --config javac

$ sudo update-alternatives --config javaws

- Confirm java version

$ java -version

$ javac -version

- Set up a mozilla plugin

$ ln -s /usr/lib/jvm/jdk1.7.0/jre/lib/i386/libnpjp2.so ~/.mozilla/plugins/

2. Installing Software

- install ssh 

$ sudo apt-get install ssh

- install rsync

$ sudo apt-get install rsync

3. Install the newest Hadoop distribution

- download Hadoop ( http://www.apache.org/dyn/closer.cgi/hadoop/common/ , 1.0.2, tar.gz )

- Uncompress

$ tar xvf hadoop-1.0.2.tar.gz

- Move directory

$ mv ./hadoop-1.0.2~/hadoop

- Edit JAVA_HOME environment 

$ vi ~/hadoop/etc/hadoop-env.sh

- Try the Hadoop 

$ cd ~/hadoop

$ bin/hadoop

- Confirm the Hadoop version

$ bin/hadoop version

4. Standalone Operation

- Prepare input files and Start the Hadoop

$ mkdir input

$ cp conf/*.xml input

$ bin/hadoop jar hadoop-examples-1.0.2.jar grep input output 'dfs[a-z.]+'

- Confirm result

$ cat output/*