Create Symlinks to Hadoop Directories for the Mac Client

Run Hadoop commands using the hadoop2 keywords.

About this task

Perform the following steps to create hadoop2 symlinks in the usr/local/bin directory for a MapR client on Mac OS X:

Procedure

  1. Run the following commands as root to create the symlinks: 
    ln -s /opt/mapr/hadoop/hadoop-2.x.x/bin/hadoop /usr/local/bin/hadoop2
ln -s /opt/mapr/bin/hadoop /usr/local/bin/hadoop
    NOTE: In the command above, replace hadoop-2.x.x with the actual hadoop 2 version number that you have installed.
  2. Add the Hadoop binaries to the PATH environment variable. For example, add the following text to the user login shell script such as ~/.bashrc: 
    export PATH=/opt/mapr/bin:/opt/mapr/hadoop/hadoop-2.x.x/bin:/opt/mapr/hadoop/hadoop-0.20.2/bin:${PATH}
    NOTE: In the text above, replace hadoop-2.x.x with the actual hadoop 2 version number that you have installed.

Results

Now, you can run hadoop commands using the hadoop1 and hadoop2 keywords.