Package org.apache.heron.api.bolt

Class StatefulWindowedBoltExecutor<K extends Serializable,V extends Serializable>

java.lang.Object

org.apache.heron.api.bolt.WindowedBoltExecutor

org.apache.heron.api.bolt.StatefulWindowedBoltExecutor<K,V>

All Implemented Interfaces:

Serializable, IBolt, IRichBolt, IComponent, IStatefulComponent<Serializable,Serializable>

public class StatefulWindowedBoltExecutor<K extends Serializable,V extends Serializable>
extends WindowedBoltExecutor

See Also:

Serialized Form

Field Summary

Fields inherited from class org.apache.heron.api.bolt.WindowedBoltExecutor

LATE_TUPLE_FIELD, waterMarkEventGenerator

Constructor Summary

Constructors

Constructor	Description
StatefulWindowedBoltExecutor(IStatefulWindowedBolt bolt)

Method Summary

Modifier and Type	Method	Description
void	initState(State state)	initalize state that is partitioned by window internal and user defined
void	preSave(String checkpointId)	This is a hook for the component to perform some actions just before the framework saves its state.

Methods inherited from class org.apache.heron.api.bolt.WindowedBoltExecutor

boltExecute, cleanup, declareOutputFields, doPrepare, execute, getComponentConfiguration, getState, getTopologyTimeoutMillis, newWindowLifecycleListener, prepare, start, validate

Methods inherited from class java.lang.Object

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

Constructor Detail

StatefulWindowedBoltExecutor

public StatefulWindowedBoltExecutor(IStatefulWindowedBolt bolt)

Method Detail

initState

public void initState(State state)

initalize state that is partitioned by window internal and user defined

Specified by:

initState in interface IStatefulComponent<K extends Serializable,V extends Serializable>

Overrides:

initState in class WindowedBoltExecutor

Parameters:

state -

preSave

public void preSave(String checkpointId)

Description copied from interface: IStatefulComponent

This is a hook for the component to perform some actions just before the framework saves its state.

Specified by:

preSave in interface IStatefulComponent<K extends Serializable,V extends Serializable>

Overrides:

preSave in class WindowedBoltExecutor

Parameters:

checkpointId - the ID of the checkpoint