Modifier and Type | Class and Description |
---|---|
class |
GroupReduceIterator<IN,OUT>
Base class that simplifies reducing all values provided as
Iterable . |
Modifier and Type | Class and Description |
---|---|
class |
RichCombineToGroupCombineWrapper<IN,OUT,F extends RichGroupReduceFunction<IN,OUT> & CombineFunction<IN,IN>>
A wrapper the wraps a function that implements both
CombineFunction and GroupReduceFunction interfaces and makes it look like a function that implements GroupCombineFunction and GroupReduceFunction to the runtime. |
Modifier and Type | Class and Description |
---|---|
class |
HadoopReduceCombineFunction<KEYIN,VALUEIN,KEYOUT,VALUEOUT>
This wrapper maps a Hadoop Reducer and Combiner (mapred API) to a combinable Flink
GroupReduceFunction.
|
class |
HadoopReduceFunction<KEYIN,VALUEIN,KEYOUT,VALUEOUT>
This wrapper maps a Hadoop Reducer (mapred API) to a non-combinable Flink GroupReduceFunction.
|
Modifier and Type | Class and Description |
---|---|
class |
OperatorSubtaskStateReducer
A reducer that aggregates all
OperatorSubtaskState 's for a particular operator into a
single OperatorState . |
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