T
- type of the stream itemK
- type of the grouping keypublic interface GeneralStageWithGrouping<T,K>
Modifier and Type | Method and Description |
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DistributedFunction<? super T,? extends K> |
keyFn()
Returns the function that extracts the grouping key from stream items.
|
@Nonnull DistributedFunction<? super T,? extends K> keyFn()
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