org.apache.storm.trident.operation

Interface GroupedMultiReducer<T>

All Superinterfaces:

Serializable

All Known Implementing Classes:

JoinerMultiReducer, PreservingFieldsOrderJoinerMultiReducer

public interface GroupedMultiReducer<T>
extends Serializable

Method Summary

Modifier and Type	Method and Description
void	cleanup()
void	complete(T state, TridentTuple group, TridentCollector collector)
void	execute(T state, int streamIndex, TridentTuple group, TridentTuple input, TridentCollector collector)
T	init(TridentCollector collector, TridentTuple group)
void	prepare(Map conf, TridentMultiReducerContext context)

Method Detail

prepare

void prepare(Map conf,
             TridentMultiReducerContext context)

init

T init(TridentCollector collector,
       TridentTuple group)

execute

void execute(T state,
             int streamIndex,
             TridentTuple group,
             TridentTuple input,
             TridentCollector collector)

complete

void complete(T state,
              TridentTuple group,
              TridentCollector collector)

cleanup

void cleanup()