1.hadoop-env.sh

export JAVA_HOME=/usr/local/jdk/

2.core-site.xml

<configuration>
<property>
<name>fs.default.name</name>
<value>hdfs://hadoop0:9000</value>
</property>
<property>
<name>hadoop.tmp.dir</name>
<value>/usr/local/hadoop/tmp</value>
</property>
</configuration>

3.hdfs-site.xml

<configuration>
<property>
<name>dfs.replication</name>
<value>1</value>
</property>
<property>
<name>dfs.permissions</name>
<value>false</value>
</property>
</configuration>

4.mapred-site.xml
<configuration>
<property>
<name>mapred.job.tracker</name>
<value>hadoop0:9001</value>
</property>
</configuration>