This document provides instructions for setting up an Apache Hadoop cluster on Macintosh OSX. It describes installing and configuring Java, Hadoop, Hive, and MySQL on a "namenode" machine and multiple "datanode" machines. Key steps include installing software via Homebrew, configuring host files and SSH keys for passwordless login, creating configuration files for core Hadoop components and copying them to all datanodes, and installing scripts to help manage the cluster. The goal is to have a basic functioning Hadoop cluster on Mac OSX for testing and proof of concept purposes.