K
- key typeV
- value typeR
- result typeSerializable
public interface RCollator<K,V,R> extends Serializable
RReducer
tasks and produces a single result object.
Executes only once.Modifier and Type | Method | Description |
---|---|---|
R |
collate(Map<K,V> resultMap) |
Collates result map from reduce phase of MapReduce process.
|
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