Oracle JDK Installation
The Oracle JDK installer is available both as an RPM-based installer (note the "-rpm" modifier before the bin file extension) for RPM-based systems, and as a binary installer for other systems. Make sure you install the jdk-6uXX-linux-x64-rpm.bin file for 64-bit systems, or jdk-6uXX-linux-i586-rpm.bin for 32-bit systems.
On SLES 11 platforms, do not install or try to use the IBM Java version bundled with the SLES distribution; Hadoop will not run correctly with that version. Install the Oracle JDK by following the instructions below.
To install the Oracle JDK:
- Download the .tar.gz file for one of the recommended versions of the Oracle JDK from the Oracle Java SE page.
- Extract the JDK to /usr/java/jdk-version; for example /usr/java/1.7.0_15
- In /etc/default/bigtop-utils, set JAVA_HOME to the directory where the JDK is installed; for
- Symbolically link the directory where the JDK is installed to
/usr/java/default; for example:
ln -s /usr/java/jdk.1.7.0_15 /usr/java/default