Interface MapReduce.MapEmitter<K,V>
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- Type Parameters:
K
- the key typeV
- the value type
public static interface MapReduce.MapEmitter<K,V>
The MapEmitter is used to emit key/value pairs from the map() stage of the MapReduce job. The implementation of MapEmitter is up to the vendor, not the developer.
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Method Summary
All Methods Instance Methods Abstract Methods Default Methods Modifier and Type Method Description void
emit(K key, V value)
default void
emit(V value)
A default method that assumes the key isMapReduce.NullObject
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Method Detail
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emit
default void emit(V value)
A default method that assumes the key isMapReduce.NullObject
.- Parameters:
value
- the value to emit.
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