Installing and running hadoop on windows xp in standalone mode

Prereqs : have cygwin installed

1. Download hadoop from http://hadoop.apache.org/common/releases.html#Download

2. unpack the file hadoop-0.20.2.tar.gz.gz in C:/ (using tar xvf filename)

3. Add the following to conf/hadoop-env.sh in the unpacked folder : 

export JAVA_HOME=/cygdrive/c/Java/jdk1.6.0_23

(assuming that C:/Java/jdk1.6.0_23/bin contains javac.exe and other binaries)

4. Download companion source code for Hadoop:The Definitive Guide from https://github.com/tomwhite/hadoop-book/archives/master

5. Unpack the file tomwhite-hadoop-book-32dae01.tar.gz

6. in the unpacked folder : cd ch02/src/main/java

7. mkdir -p build/classes

8. $ javac -verbose -classpath C:\\hadoop-0.20.2\\hadoop-0.20.2-core.jar MaxTemperature*.java -d build/classes
9. export HADOOP_CLASSPATH=build/classes

10. hadoop MaxTemperature ../../../../input/ncdc/sample.txt output

your output is in output folder