tar -zxvf hadoop-2.6.1.tar.gz -C ../

export HADOOP_HOME=/home/bigdata/hadoop-2.6.1
export HADOOP_CONF_DIR=$HADOOP_HOME/etc/hadoop
export LD_LIBRARY_PATH=$HADOOP_HOME/lib/native
export HADOOP_USER_NAME=bigdata
export JAVA_HOME=/home/bigdata/jdk1.8.0_161
export PATH=$PATH:$HADOOP_HOME/bin:$HADOOP_HOME/sbin:$JAVA_HOME/bin

source .bashrc

<configuration>
	<property>
		<name>fs.defaultFS</name>
		<value>hdfs://risen:9000</value>
	</property>
	<property>
		<name>hadoop.tmp.dir</name>
		<value>/home/bigdata/data/hadoop</value>
	</property>
</configuration>

<configuration>
	<property>
		<name>dfs.replication</name>
		<value>1</value>
	</property>
</configuration>

<configuration>
	<property>
		<name>mapreduce.framework.name</name>
		<value>yarn</value>
	</property>
	<property>
		<name>mapreduce.map.memory.mb</name>
		<value>2048</value>
	</property>
	<property>
		<name>mapreduce.map.java.opts</name>
		<value>-Xmx2048M</value>
	</property>
	<property>
　		<name>mapreduce.reduce.memory.mb</name>
		<value>2048</value>
	</property>
	<property>
		<name>mapreduce.reduce.java.opts</name>
		<value>-Xmx2048M</value>
	</property>
</configuration>

export HADOOP_PREFIX=/home/bigdata/hadoop-2.6.1

risen

hdfs namenode –format

./start-all.sh