hadoop伪分布式搭建参数配置

配置/etc/hadoop/core-site.xml

<configuration>
        <!--指定namenode的地址-->
    <property>
                <name>fs.defaultFS</name>
                <value>hdfs://master:9000</value>
    </property>
    <!--用来指定使用hadoop时产生文件的存放目录-->
    <property>
             <name>hadoop.tmp.dir</name>
             <value>file:///usr/local/src/hadoop-2.6.0/tmp</value> 
    </property>
        <!--用来设置检查点备份日志的最长时间-->
        <name>fs.checkpoint.period</name> 
        <value>3600</value>
 </configuration>

配置/etc/hadoop/hadoop-env.sh

export JAVA_HOME="/opt/modules/jdk1.8.0_67"

配置/etc/hadoop/hdfs-site.xml

<configuration>
    <!--指定hdfs保存数据的副本数量-->
    <property>
            <name>dfs.replication</name>
            <value>3</value>
    </property>
    <!--指定hdfs中namenode的存储位置-->
    <property>
             <name>dfs.namenode.name.dir</name> 
             <value>file:/usr/local/src/hadoop-2.6.0/tmp/dfs/name</value>
    </property>
    <!--指定hdfs中datanode的存储位置-->
    <property>
             <name>dfs.datanode.data.dir</name>
             <value>file:/usr/local/src/hadoop-2.6.0/tmp/dfs/data</value>
    </property>

</configuration>

配置/etc/hadoop/mapred-site.xml

<configuration>
<!--告诉hadoop以后MR(Map/Reduce)运行在YARN上-->
        <property>
              <name>mapreduce.framework.name</name>
              <value>yarn</value>
       </property>
</configuration>

配置/etc/hadoop/yarn-site.xml

<configuration>
    <!--nomenodeManager获取数据的方式是shuffle-->
        <property>
                <name>yarn.nodemanager.aux-services</name>
                <value>mapreduce_shuffle</value>
        </property>
    <!--指定Yarn的老大(ResourceManager)的地址-->     
    <property>
            <name>yarn.resourcemanager.hostname</name>
            <value>master</value>
    </property> 
    <!--Yarn打印工作日志-->    
    <property>    
        <name>yarn.log-aggregation-enable</name> 
        <value>true</value>    
    </property>

<configuration>