public abstract class AggregationFunction<T> extends RichReduceFunction<T>
| Modifier and Type | Class and Description |
|---|---|
static class |
AggregationFunction.AggregationType |
| Constructor and Description |
|---|
AggregationFunction() |
reduceclose, getIterationRuntimeContext, getRuntimeContext, open, setRuntimeContextCopyright © 2014–2016 The Apache Software Foundation. All rights reserved.