MapReduce.ReduceEmitter (Apache TinkerPop 3.6.4 API)

Type Parameters:

OK - the key type

OV - the value type

All Known Implementing Classes:

TinkerReduceEmitter

Enclosing interface:

MapReduce<MK,MV,RK,RV,R>
```
public static interface MapReduce.ReduceEmitter<OK,OV>
```
The ReduceEmitter is used to emit key/value pairs from the combine() and reduce() stages of the MapReduce job. The implementation of ReduceEmitter is up to the vendor, not the developer.

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`void`	`emit(OK key, OV value)`
`default void`	`emit(OV value)`	A default method that assumes the key is `MapReduce.NullObject`.

- Method Detail
  - emit
```
void emit(OK key,
          OV value)
```
  - emit
```
default void emit(OV value)
```
    A default method that assumes the key is MapReduce.NullObject.
    
    Parameters:
    
    value - the value to emit.