Hadoop on Windows - "Error JAVA_HOME is incorrectly set."

windows hadoop java-home
Joseph Palermo picture Joseph Palermo · Jul 25, 2015 · Viewed 24.6k times · Source

I'm trying to get Hadoop running 'Local Mode' on my Windows machine. I've been using this guide: http://hadoop.apache.org/docs/r1.2.1/single_node_setup.html

When I run the command: bin/hadoop, I get the following error message:

Error: JAVA_HOME is incorrectly set. Please update C:...\hadoop-2.7.1\conf\hadoop-env.cmd

Inside hadoop-env.cmd, I have the line: set JAVA_HOME=%JAVA_HOME%

When I type echo %JAVA_HOME% at the command line I get: C:\Java\jdk1.0.8_51

Even if I change the line in hadoop-env.cmd to: set JAVA_HOME=C:\Java\jdk1.0.8_51 I get the same error...

How could it be that my JAVA_HOME is incorrectly set?

Answer

Mohamed F picture Mohamed F · Dec 5, 2015

If your JAVA_HOME path contains spaces, you must use the Windows 8.3 Pathname

Related questions

Hadoop on windows server

I'm thinking about using hadoop to process large text files on my existing windows 2003 servers (about 10 quad core machines with 16gb of RAM) The questions are: Is there any good tutorial on how to configure an hadoop cluster on windows? …

Read More
Hadoop on Windows Building/ Installation Error

I am trying to install Apache Hadoop 2.7.1 on Windows x64 (8.1 and Server 2012 R2), but I am failing at goal: [INFO] Apache Hadoop Common ............................... FAILURE [ 37.925 s] In the past days, I think I followed the steps of all tutorials, like HadoopOnWindows, …

Read More
Hadoop Installation Issue on Windows

I have been trying to install Hadoop on Windows 7 for quite sometime now. I am following this blog for instructions. But unfortunately I have not been be able to run the Namenode. There seems to be issue with hdfs-site.xml …

Read More