In the prior chapter we did some data-munging to get our data into a more acceptable format prior to loading into Cascalog. What if we could modify Cascalog to read the file directly? We’ll do that now.
In this chapter we assume the following:
You have Leiningen set up.
You have read the previous Cascalog chapters.
The benefit of this chapter is understanding and applying the Cascalog and Hadoop framework sufficiently to write your own custom data format reader.