APPENDIX A Installing Apache Hadoop It's easy to install Hadoop on a single machine to try it out. (For installation on a cluster, please refer to Chapter 9.) The quickest way is to download and run a binary release from an Apache Software Foundation Mirror. In this appendix, we cover how to install Hadoop Common, HDFS, and MapReduce. Instructions for installing the other projects covered in this book are included at the start of the relevant chapters. Prerequisites