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Building on Linux
Building on Windows
Setting the Runtime Java Environment
The version of Java used to compile REEF is controlled in the Maven pom.xml file in the build plugins section under the maven-compiler-plugin artifact identifier. In order to run REEF applications, you must set the JAVA_HOME environment variable to the correct Java installation directory for your operating system and java version.
Linux
On a number of Linux distributions such as Ubuntu, the current active version of Java is controlled via links from /usr/bin set by the update-alternatives command; thus, the value of JAVA_HOME that causes REEF to use the Java version controlled by update-alternatives is given in the code block below. REEF will concatenate the appropriate path to find executable files.
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export JAVA_HOME=/usr |
You can change the active version of Java controlled by update-alternatives by entering the command below and selecting the desired version from the displayed list.
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update-alternatives --config java |
Windows
On Windows, the JAVA_HOME environment variable is set by the Java installer to $SYSTEM_DRIVE\Program Files\Java\jdk[version number]. You can examine the value of JAVA_HOME on Windows by entering the following command in a powerShell console window.
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$env:JAVA_HOME |
Test Environment Configuration
The REEF unit tests require a large number of simultaneously open files to successfully complete. This may or may not be allowed by your platform administrator.
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