关于搭建Hadoop完全分布式时配置的问题
配置hadoop的配置文件core-site.xml, hdfs-site.xml, mapred-site.xml,yarn-site.xml,slaves(workers)(都在Hadoop安装目录/etc/hadoop文件夹下)
1、core-site.xml
<configuration>
<property>
<name>fs.default.name</name>
<value>hdfs://主机的hostname:9000</value>
</property>
<property>
<name>hadoop.tmp.dir</name>
<value>file:你的Hadoop安装目录/tmp</value>
</property>
</configuration>
2.hdfs-site.xml
<configuration>
<property>
<name>dfs.replication</name>
<value>2</value>
</property>
<property>
<name>dfs.namenode.name.dir</name>
<value>file:Hadoop安装目录/dfs/name</value>
</property>
<property>
<name>dfs.datanode.data.dir</name>
<value>file:Hadoop安装目录/tmp/dfs/data</value>
</property>
<property>
<name>dfs.namenode.secondary.http-address</name>
<value>主机的hostname:9001</value>
</property>
</configuration>
3.mapred-site.xml
<configuration>
<property>
<name>mapreduce.framework.name</name>
<value>yarn</value>
</property>
</configuration>
4.yarn-site.xml
<configuration>
<property>
<name>yarn.resourcemanager.hostname</name>
<value>主机的hostname</value>
</property>
<property>
<name>yarn.nodemanager.aux-services</name>
<value>mapreduce_shuffle</value>
</property>
<property>
<name>yarn.log-aggregation-enable</name>
<value>true</value>
</property>
<property>
<name>yarn.log-aggregation.retain-seconds</name>
<value>604800</value>
</property>
<property>
<name>yarn.application.classpath</name>
<value>在终端输入hadoop classpath获取的值</value>
</property>
</configuration>
5.slaves(在Hadoop3.x是workers)
slave1
slave2
这里是你的从节点的hostname