hadoop conf中xml文件修改

 core-site.xml

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

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

<configuration>
  <property>-------指定NameNode主机名与端口号
    <name>fs.default.name</name>
    <value>hdfs://localhost:9000</value>
  </property>
  <property>
    <name>hadoop.tmp.dir</name>
    <value>/opt/data/tmp</value>
  </property>
</configuration>

hdfs-site.xml

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

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

<configuration>
  <property>-------设置HDFS的副本数
    <name>dfs.replication</name>
    <value>1</value>
  </property>
  <property>
    <name>dfs.permissions</name>
    <value>false</value>
  </property>
</configuration>

mapred-site.xml

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

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

<configuration>
  <property>-------指定JobTracker的主机与端口号
    <name>mapred.job.tracker</name>
    <value>localhost:9001</value>
  </property>
</configuration>

masters---------指定SecondaryNameNode的位置

localhost

slavers----------指定DataNode和TaskTracker的位置

localhost

格式化

[hadoop@localhost bin]$ hadoop namenode -format

原文地址:https://www.cnblogs.com/longjshz/p/4396522.html