hadoop安装配置——伪分布模式

tar -xzf hadoop-0.20.2

vim ~/.bashrc
export HADOOP_HOME=/home/rte/hadoop-0.20.2   #这里为实际hadoop解压的目录位置
export PATH=$PATH:$HADOOP_HOME/bin
source ~/.bashrc

vim conf/hadoop-env.sh
export JAVA_HOME=/home/rte/Software/java/jdk1.6.0_27

<?xml version="1.0"?>
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>

<!-- Put site-specific property overrides in this file. -->

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

<?xml version="1.0"?>
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>

<!-- Put site-specific property overrides in this file. -->

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

<?xml version="1.0"?>
<?xml-stylesheet type="text/xsl" href="configuration.xsl"?>

<!-- Put site-specific property overrides in this file. -->

<configuration>
        <property>
                <name>dfs.replication</name>
                <value>2</value>
        </property>
</configuration>

cd hadoop-0.20.2/conf
hadoop namenode -format

cd hadoop-0.20.2/bin
sh start-all.sh

cd hadoop-0.20.2/bin
sh stop-all.sh