org.apache.hadoop.mapred
Interface OutputCollector<K,V>

All Known Implementing Classes:

Task.CombineOutputCollector

public interface OutputCollector<K,V>

Collects the <key, value> pairs output by Mappers and Reducers.

OutputCollector is the generalization of the facility provided by the Map-Reduce framework to collect data output by either the Mapper or the Reducer i.e. intermediate outputs or the output of the job.

Method Summary

void	collect(K key, V value) Adds a key/value pair to the output.

Method Detail

collect

void collect(K key,
             V value)
             throws IOException

Adds a key/value pair to the output.

Parameters:

key - the key to collect.

value - to value to collect.

Throws:

IOException