Has anyone performed joins using 3 tables in cascading

Question

Cascading is one of the best framework to deal with hadood jobs by using simple data flows.

Has anyone tried and performed joins usings 3 tables in cascading, if so can u please share ur ideas regarding joins in cascading and how to perform join on 3 tables?.

Answer 1

cascading supports mutliple joins we can do this by using

CoGroup(pipes[],fieldnames[],DeclaredFields[],mixedjoin(boolean[]));

boolean is a set of arrays which indicate the whether the is innerjoin(true) or outerjoin(false).