java 使用 hadoop 错误设置获取 JAVA_HOME
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getting JAVA_HOME is incorrectly set with hadoop
提问by Shri S Softwares
I just downloaded hadoop and unzipped the file. but when I run hadoop version command from command prompt , I'm getting below error . I double check and JAVA_HOME is set to "C:\Program Files\Java\jdk1.8.0_45" which looks ok to me .
我刚刚下载了 hadoop 并解压缩了文件。但是当我从命令提示符运行 hadoop version 命令时，我遇到了错误。我仔细检查了一下，JAVA_HOME 设置为“C:\Program Files\Java\jdk1.8.0_45”，这对我来说没问题。
C:\Users\shri-pc>hadoop version
The system cannot find the path specified.
Error: JAVA_HOME is incorrectly set.
Please update C:\JAVA\hadoop-2.6.0\conf\hadoop-env.cmd
'-Xmx512m' is not recognized as an internal or external command,
operable program or batch file.
Output of java -version command is coming properly . Please advice .
java -version 命令的输出正确。请指教 。
C:\Users\shri-pc>java -version
java version "1.8.0_51"
Java(TM) SE Runtime Environment (build 1.8.0_51-b16)
Java HotSpot(TM) Client VM (build 25.51-b03, mixed mode)
采纳答案by Elliott Frisch
Your JAVA_HOMEshould not include bin. Change it from
你JAVA_HOME不应该包括bin. 改变它从
"C:\Program Files\Java\jdk1.8.0_45\bin"
to
到
"C:\Program Files\Java\jdk1.8.0_45"
And you can add it to your path (in Windows) like
你可以将它添加到你的路径中（在 Windows 中），比如
set "PATH=%PATH%;%JAVA_HOME%\bin"
回答by Shri S Softwares
Issue was with space in JAVA_HOME path . I change the path as below and it started working.
问题在于 JAVA_HOME 路径中的空间。我改变了如下路径，它开始工作。
from -
从 -
"C:\Program Files\Java\jdk1.8.0_45\bin"
“C:\Program Files\Java\jdk1.8.0_45\bin”
to -
到 -
"C:\PROGRA~1\Java\jdk1.8.0_45\bin"
"C:\PROGRA~1\Java\jdk1.8.0_45\bin"
.
.
回答by Aman Tandon
If your JAVA_HOME is Program Filesthen change it to PROGRA~1in JAVA_HOME environment variable.
如果您的 JAVA_HOME 是Program Files然后将其更改为PROGRA~1JAVA_HOME 环境变量。
回答by Pathum Goonathilake
Try changing the path from
尝试改变路径
C:\Program Files\Java\jdk1.8.0_45
C:\Program Files\Java\jdk1.8.0_45
to
到
C:\PROGRA~1\Java\jdk1.8.0_45.
C:\PROGRA~1\Java\jdk1.8.0_45.
回答by Kenny Monar
To me it worked to go to the java path and convert it to the windows short name, as indicated in this picture:
对我来说，它可以转到 java 路径并将其转换为 windows 短名称，如下图所示：
https://www.joe0.com/wp-content/uploads/2017/02/word-image-30.png
https://www.joe0.com/wp-content/uploads/2017/02/word-image-30.png
from this site:
从这个网站：
https://www.joe0.com/2017/02/02/how-to-install-a-hadoop-single-node-cluster-on-windows-10/
https://www.joe0.com/2017/02/02/how-to-install-a-hadoop-single-node-cluster-on-windows-10/
