如何安装伪分布式Hadoop

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安装伪分布式Hadoop
http://blog.csdn.net/ggz631047367/article/details/42426391
sudo vi /usr/local/hadoop/etc/hadoop/hadoop-env.sh
在hadoop-env.sh中 修改HADOOP_OPTS：
export HADOOP_OPTS="-Djava.library.path=$HADOOP_PREFIX/lib:$HADOOP_PREFIX/lib/native"
export HADOOP_OPTS="-Djava.library.path=$HADOOP_PREFIX/lib:$HADOOP_PREFIX/lib/native"

sudo gedit ~/.bashrc  


#HADOOP VARIABLES START  
export JAVA_HOME=/usr/java/jdk1.7.0_75
export HADOOP_INSTALL=/usr/local/hadoop  
export PATH=$PATH:$HADOOP_INSTALL/bin  
export PATH=$PATH:$HADOOP_INSTALL/sbin  
export HADOOP_MAPRED_HOME=$HADOOP_INSTALL  
export HADOOP_COMMON_HOME=$HADOOP_INSTALL  
export HADOOP_HDFS_HOME=$HADOOP_INSTALL  
export YARN_HOME=$HADOOP_INSTALL  
export HADOOP_COMMON_LIB_NATIVE_DIR=$HADOOP_INSTALL/lib/native  
export HADOOP_OPTS="-Djava.library.path=$HADOOP_INSTALL/lib"  
#HADOOP VARIABLES END  

bin/hadoop jar share/hadoop/mapreduce/sources/hadoop-mapreduce-examples-2.7.1-sources.jar  org.apache.hadoop.examples.WordCount input output


sudo vi /usr/local/hadoop/etc/hadoop/core-site.xml
sudo vi /usr/local/hadoop/etc/hadoop/mapred-site.xml
sudo vi /usr/local/hadoop/etc/hadoop/yarn-site.xml
sudo vi /usr/local/hadoop/etc/hadoop/hdfs-site.xml


<configuration>  
<property>  
        <name>dfs.replication</name>  
        <value>1</value>  
    </property>  
    <property>  
        <name>dfs.namenode.name.dir</name>  
        <value>file:/usr/local/hadoop/dfs/name</value>  
    </property>  
    <property>  
        <name>dfs.datanode.data.dir</name>  
        <value>file:/usr/local/hadoop/dfs/data</value>  
    </property>  
    <property>  
            <name>dfs.permissions</name>  
            <value>false</value>  
     </property>  
 </configuration>
 
 
sudo vi /usr/local/hadoop/etc/hadoop/masters 添加：localhost

sudo vi /usr/local/hadoop/etc/hadoop/slaves  添加：localhost

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