Getting started

We will now describe the two environments we will use throughout the book: Cloudera's QuickStart virtual machine will be our reference system on which we will show all examples, but we will additionally demonstrate some examples on Amazon's EMR when there is some particularly valuable aspect to running the example in the on-demand service.

Although the examples and code provided are aimed at being as general-purpose and portable as possible, our reference setup, when talking about a local cluster, will be Cloudera running atop CentOS Linux.

For the most part, we will show examples that make use of, or are executed from, a terminal prompt. Although Hadoop's graphical interfaces have improved significantly over the years (for example, ...

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