linux下hadoop伪分布式启动 localhost: Error: JAVA_HOME is not set and could not be found.

最新推荐文章于 2024-04-21 11:06:35 发布
转载 最新推荐文章于 2024-04-21 11:06:35 发布 · 2k 阅读 · 3
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#hadoop #linux #java_home not found #伪分布式

本文介绍了解决Hadoop启动过程中JAVA_HOME未正确配置的问题。通过修改hadoop-env.sh文件，并设置JAVA_HOME为JDK的具体安装路径(/usr/lib/jvm/jdk1.8.0_121)，成功解决了启动NameNode和DataNode时出现的JAVA_HOME未找到错误。

今天开启 NameNode 和 DataNode 守护进程时出错

localhost: Error: JAVA_HOME is not set and could not be found.
1
但是JAVA环境变量已经配好了，终端输入java -version也会显示版本信息

解决方案如下
修改hadoop-env.sh (我的hadoop安装在/usr/local/ 目录下)

sudo gedit /usr/local/hadoop/etc/hadoop/hadoop-env.sh
1
将原本的JAVA_HOME 替换为绝对路径就可以了

#export JAVA_HOME=${JAVA_HOME}

export JAVA_HOME=/usr/lib/jvm/jdk1.8.0_121

原文：https://blog.youkuaiyun.com/u013247765/article/details/68487214

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