We have some great news for developers and researchers that want to start using Apache Hadoop quickly. With the release of Apache Hadoop 0.20.204 today comes, for the first time, availability of RPMs that make it much simpler to setup a basic Hadoop cluster. This will allow you to focus on how to use the features instead of having to learn how they were implemented.
Before we begin, I’d like to apologize for the fact that these instructions do not optimize Hadoop settings to make Hadoop fast. We will leave Hadoop optimization for another day.