In this chapter we’ll cover the background to Cascalog and get you started with Cascalog 2.0.
In this chapter we assume the following:
You have Leiningen set up.
You have a projects directory where you create new Leiningen projects.
The benefit of Cascalog is the ability to efficiently write complex Hadoop queries with a minimal number of lines of code.
Now that you can see the landscape, let’s get started. We’ll run some basic Cascalog queries.
1. Create a new Leiningen project ...