Hadoop相关配置

官方默认配置地址：https://hadoop.apache.org/docs/stable/

###########################
core-site.xml

<configuration>
    <property>
        <name>hadoop.tmp.dir</name>
       <value>file:/usr/local/hadoop/tmp</value>
       <description>Abase for other temporary directories.</description>
    </property>
    <property>
        <name>fs.defaultFS</name>
       <value>hdfs://0.0.0.0:9000</value>
   </property>
    <property>
        <name>hadoop.http.staticuser.user</name>
       <value>hadoop</value>
       <description>solve Permission denied: user=dr.who</description>
   </property>
</configuration>
###########################
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/tmp/dfs/name</value>
    </property>
    <property>
       <name>dfs.datanode.data.dir</name>
        <value>file:/usr/local/hadoop/tmp/dfs/data</value>
    </property>
    <property>
       <name>dfs.datanode.address</name>
        <value>0.0.0.0:50010</value>
    </property>
    <property>
       <name>dfs.webhdfs.enabled</name>
       <value>true</value>
       <description>solve HDFS Web issues,Couldn‘t preview the file.</description>
    </property>

</configuration>

###########################
yarn-site.xml

<configuration>
   <property>
       <name>yarn.nodemanager.aux-services</name>
       <value>mapreduce_shuffle</value>
   </property>
   <property>
       <name>yarn.nodemanager.aux-services.mapreduce_shuffle.class</name>
       <value>org.apache.hadoop.mapred.ShuffleHandler</value>
   </property>

   <property>
       <name>yarn.nodemanager.vmem-check-enabled</name>
       <value>false</value>
   </property>

   <property>
       <name>yarn.log-aggregation-enable</name>
       <value>true</value>
       <description>Whether to enable log aggregation.</description>
   </property>

   <property>
       <name>yarn.log.server.url</name>
       <value>http://master01:19888/jobhistory/logs</value>
       <description>URL for log aggregation server.</description>
   </property>

   <property>
       <name>yarn.log-aggregation.retain-seconds</name>
       <value>604800</value>
       <description>How long to keep aggregation logs before deleting them.</description>
   </property>
</configuration>

###########################
mapred-site.xml

<configuration>
   
   <property>
       <name>mapreduce.jobhistory.address</name>
       <value>0.0.0.0:10020</value>
   </property>
   
   <property>
       <name>mapreduce.jobhistory.webapp.address</name>
       <value>0.0.0.0:19888</value>
   </property>
   <property>
       <name>mapreduce.framework.name</name>
       <value>yarn</value>
   </property>
   <property>
       <name>yarn.app.mapreduce.am.env</name>
       <value>HADOOP_MAPRED_HOME=/usr/local/hadoop</value>
   </property>
   <property>
       <name>mapreduce.map.env</name>
       <value>HADOOP_MAPRED_HOME=/usr/local/hadoop</value>
   </property>
   <property>
       <name>mapreduce.reduce.env</name>
       <value>HADOOP_MAPRED_HOME=/usr/local/hadoop</value>
   </property>
</configuration>

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