我是一个Hadoop的初学者,想在我的Ubuntu上安装和运行Hadoop作为单节点集群。这是我的hadoop_env.sh文件中的JAVA_HOME:
# The java implementation to use.
export JAVA_HOME=/usr/lib/jvm/java-7-openjdk-i386/
export HADOOP_CONF_DIR=${HADOOP_CONF_DIR:-"/etc/hadoop"}
但是当我运行它时,出现以下错误 -
Starting namenodes on [localhost]
localhost: Error: JAVA_HOME is not set and could not be found.
localhost: Error: JAVA_HOME is not set and could not be found.
Starting secondary namenodes [0.0.0.0]
0.0.0.0: Error: JAVA_HOME is not set and could not be found.
我该如何解决这个错误?