org.apache.spark.api.java.function

Interface MapGroupsFunction<K,V,R>

All Superinterfaces:

java.io.Serializable

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 MapGroupsFunction<K,V,R>
extends java.io.Serializable

Base interface for a map function used in GroupedDataset's mapGroup function.

Method Summary

Modifier and Type	Method and Description
R	call(K key, java.util.Iterator<V> values)

Method Detail

call

R call(K key,
       java.util.Iterator<V> values)
throws Exception

Throws:

Exception