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Hadoop on Amazon's Cloud
There are lots of ways to run Hadoop, but what if you want to start working with it right away, without the distraction of building a cluster yourself? Your best bet is probably a cloud-based Hadoop cluster, and the Elastic MapReduce (EMR) service on Amazon Web Services (AWS) can get you there pretty speedily.
To get an EMR cluster up and running, you'll need to create an AWS account at http://aws.amazon.com, and you'll want to create a security key pair too. There are several other steps of course, and we'll cover them, one by one, in this gallery.