配置完執行hadoop報-bash: hadoop: command not found?。?！也配置了hadoop_home并且保存生效了！??！
export JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64/?
export JRE_HOME=$JAVA_HOME/jre
export HADOOP_HOME=/opt/hadoop-1.2.1
export CLASSPATH=$JAVA_HOME/lib:$JRE_HOME/lib:$CLASSPATH
export PATH=$JAVA_HOME/bin:$JRE_HOME/bin:$HADOOP_HOME/bin:$PATH
2018-10-04
jdk應該不是系統自帶而是自己安裝才對吧.