hadoop_1.1.1_setup.sh

# hdfs-site.xml

#     <property>
#         <name>dfs.replication</name>
#         <value>1</value>
#     </property>


# core-site.xml

#<property>
#  <name>hadoop.tmp.dir</name>
#  <value>/opt/hadoop-1.1.1/tmp</value>
#  <description>A base for other temporary directories.</description>
#</property>

#<property>
#         <name>fs.default.name</name>
#         <value>hdfs://localhost:9000</value>
#     </property>


# mapred-site.xml

#<property>
#         <name>mapred.job.tracker</name>
#         <value>localhost:9001</value>
#     </property>

# hadoop-env.sh
# export JAVA_HOME=/opt/jdk1.6.0_35

bin/hadoop namenode -format

bin/start-dfs.sh
bin/start-mapred.sh

mkdir playground
cd playground
mkdir playground_classes
javac -cp ../hadoop-core-1.1.1.jar:../lib/commons-cli-1.2.jar -d playground_classes WordCount.java
jar -cvf WordCount.jar -C playground_classes/ .