com.hazelcast.mapreduce

Interface Context<K,V>

Type Parameters:

K - key type of the resulting keys

V - value type of the resulting values

All Known Implementing Classes:

DefaultContext

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 For general data processing, it is superseded by Hazelcast Jet.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.