org.apache.hadoop.mapred

インタフェース OutputCollector<K,V>

@InterfaceAudience.Public
 @InterfaceStability.Stable
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.

メソッドのサマリー

修飾子とタイプ	メソッドと説明
void	collect(K key, V value) Adds a key/value pair to the output.

メソッドの詳細

collect

void collect(K key,
             V value)
      throws IOException

Adds a key/value pair to the output.

パラメータ:

key - the key to collect.

value - to value to collect.

例外:

IOException