Interface CoGroupFunction<K,V1,V2,R>

All Superinterfaces:
Functional Interface:
This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface public interface CoGroupFunction<K,V1,V2,R> extends Serializable
A function that returns zero or more output records from each grouping key and its values from 2 Datasets.