我知道以前有人问过这个问题,但我无法找到解决方案。当我尝试运行时出现以下错误hdfs name node -format
:
无法找到或加载主类org.apache.hadoop.hdfs.server.namenode.Namenode
我按照该网站的说明在我的 centos 机器上安装。 http://alanxelsys.com/hadoop-v2-single-node-installation-on-centos-6-5/唯一的区别是我使用 root 而不是链接中提到的 hadoopuser 安装。
Bashrc
# User specific aliases and functions
export JAVA_HOME=/usr/lib/jvm/jre-1.7.0-openjdk.x86_64/
export HADOOP_INSTALL=/usr/local/hadoop
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=$HADOOP_INSTALL/lib/native
export PATH=$PATH:$HADOOP_INSTALL/sbin
export PATH=$PATH:$HADOOP_INSTALL/bin
hadoop-env.sh
export JAVA_HOME=/usr/lib/jvm/jre-1.7.0-openjdk.x86_64/
Mapred
<property>
<name>mapreduce.framework.name</name>
<value>yarn</value>
</property>
纱线站点.xml
<property>
<name>yarn.nodemanager.aux-services</name>
<value>mapreduce_shuffle</value>
</property>
核心站点.xml
<property>
<name>fs.default.name</name>
<value>hdfs://localhost:9000</value>
</property>
hdfs-site.xml
<property>
<name>dfs.replication</name>
<value>1</value>
</property>
<property>
<name>dfs.name.dir</name>
<value>file:///home/hadoopspace/hdfs/namenode</value>
</property>
<property>
<name>dfs.data.dir</name>
<value>file:///home/hadoopspace/hdfs/datanode</value>
</property>