Package org.apache.storm.trident.operation.impl

Class GroupedMultiReducerExecutor

java.lang.Object

org.apache.storm.trident.operation.impl.GroupedMultiReducerExecutor

All Implemented Interfaces:

Serializable, MultiReducer<Map<TridentTuple,Object>>

public class GroupedMultiReducerExecutor
extends Object
implements MultiReducer<Map<TridentTuple,Object>>

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
GroupedMultiReducerExecutor(GroupedMultiReducer reducer, List<Fields> groupFields, List<Fields> inputFields)

Method Summary

Modifier and Type	Method	Description
void	cleanup()
void	complete(Map<TridentTuple,Object> state, TridentCollector collector)
void	execute(Map<TridentTuple,Object> state, int streamIndex, TridentTuple full, TridentCollector collector)
Map<TridentTuple,Object>	init(TridentCollector collector)
void	prepare(Map<String,Object> conf, TridentMultiReducerContext context)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

GroupedMultiReducerExecutor

public GroupedMultiReducerExecutor(GroupedMultiReducer reducer,
 List<Fields> groupFields,
 List<Fields> inputFields)

Method Details

prepare

public void prepare(Map<String,Object> conf,
 TridentMultiReducerContext context)

Specified by:

prepare in interface MultiReducer<Map<TridentTuple,Object>>

init

public Map<TridentTuple,Object> init(TridentCollector collector)

Specified by:

init in interface MultiReducer<Map<TridentTuple,Object>>

execute

public void execute(Map<TridentTuple,Object> state,
 int streamIndex,
 TridentTuple full,
 TridentCollector collector)

Specified by:

execute in interface MultiReducer<Map<TridentTuple,Object>>

complete

public void complete(Map<TridentTuple,Object> state,
 TridentCollector collector)

Specified by:

complete in interface MultiReducer<Map<TridentTuple,Object>>

cleanup

public void cleanup()

Specified by:

cleanup in interface MultiReducer<Map<TridentTuple,Object>>