Java Installation
- Follow Check if Java JDK 7+ is Installed
java --version
How-to Install Required Oracle JDK 7+ on MacOS X:
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Furthermore Set JAVA_HOME in Hadoop Env File
First logis is as SuperUser:sudo su
If Got “User is Not in Sudoers file” then Look: Solution
Then Make the needed Directory:mkdir /usr/local/hadoop/conf
nano /usr/local/hadoop/conf/hadoop-env.sh
So Append:
export JAVA_HOME=$(/usr/libexec/java_home)
Ctrl+x to Save & Exit 🙂