For basic Hadoop deployments, such as proof of concept projects, you can use the default Hadoop cluster configuration for Serengeti for clusters that are created with the CLI.

The resulting cluster deployment consists of the following nodes and virtual machines:

One master node virtual machine with NameNode and JobTracker services.

Three worker node virtual machines, each with DataNode and TaskTracker services.

One client node virtual machine containing the Hadoop client environment: the Hadoop client shell, Pig, and Hive.