See: Description
| Interface | Description |
|---|---|
| Accumulator<In,Out> |
Collects a sequence of values and produces one value as a result.
|
| KeyValueCollector<K,V> |
Provided to an instance of
Mapper to collect key-value pairs. |
| Mapper<In,OutKey,OutVal> |
Maps an input record to one or more key-value pairs.
|
| Merger<T> |
Merges two values together.
|