Mortar is a platform as a service for Hadoop. With Mortar, you can run jobs on Hadoop using Apache Pig and Python without any special training.
The Mortar Development Framework lets you develop Mortar Hadoop jobs directly on your local computer without installing any Hadoop libraries. Lots more info can be found on the Mortar help site.
gem install mortar
To develop on the gem, install the bundle, and then use bundle exec to run mortar:
gem install bundler
bundle install
bundle exec mortar <command> <args>
You can run all the RSpec tests with rake:
rake spec
To run tests for a single file using:
rspec path/to/test_file