storm.trident.operation

Interface MultiReducer<T>

All Superinterfaces:

Serializable

All Known Implementing Classes:

BaseMultiReducer, GroupedMultiReducerExecutor, IdentityMultiReducer, ReturnResultsReducer

public interface MultiReducer<T>
extends Serializable

Method Summary

Methods

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

Method Detail

prepare

void prepare(Map conf,
           TridentMultiReducerContext context)

init

T init(TridentCollector collector)

execute

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

complete

void complete(T state,
            TridentCollector collector)

cleanup

void cleanup()