com.hazelcast.mapreduce

Interface Context<K,V>

Type Parameters:

K - key type of the resulting keys

V - value type of the resulting values

Deprecated.

MapReduce is deprecated and will be removed in 4.0. For map aggregations, you can use Aggregator on IMap. For general data processing, it is superseded by Hazelcast Jet.

@Deprecated
public interface Context<K,V>

The Context interface is used for emitting keys and values to the intermediate working space of the MapReduce algorithm.

Since:

3.2

Method Summary

Modifier and Type	Method and Description
void	emit(K key, V value) Deprecated. Emits a key-value pair to the intermediate working space.

Method Detail

emit

void emit(K key,
          V value)

Deprecated.

Emits a key-value pair to the intermediate working space. The same key can be used multiple times to collect values under the same key.

Parameters:

key - emitted key to the intermediate working space.

value - emitted value to the intermediate working space.