io.ray.streaming.runtime.worker.tasks

类 StreamTask

java.lang.Object

io.ray.streaming.runtime.worker.tasks.StreamTask

所有已实现的接口:

Runnable

直接已知子类:

InputStreamTask, SourceStreamTask

public abstract class StreamTask
extends Object
implements Runnable

StreamTask is a while-loop thread to read message, process message, and send result messages to downstream operators

字段概要

字段

限定符和类型	字段和说明
boolean	isInitialState
protected JobWorker	jobWorker
long	lastCheckpointId
protected Processor	processor
protected DataReader	reader
protected boolean	running
protected boolean	stopped
protected DataWriter	writer

构造器概要

构造器

限定符	构造器和说明
protected	StreamTask(Processor processor, JobWorker jobWorker, long lastCheckpointId)

方法概要

限定符和类型	方法和说明
void	clearExpiredCpState(long checkpointId)
void	clearExpiredQueueMsg(long checkpointId)
void	close() Close running tasks.
void	doCheckpoint(long checkpointId, Map<String,OffsetInfo> inputPoints)
String	genOpCheckpointKey(long checkpointId)
protected abstract void	init() Task initialization related work.
boolean	isAlive()
void	notifyCheckpointTimeout(long checkpointId)
ChannelRecoverInfo	recover(boolean isRecover)
protected void	requestRollback(String exceptionMsg)
boolean	triggerCheckpoint(Long barrierId)

从类继承的方法 java.lang.Object

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

从接口继承的方法 java.lang.Runnable

run

字段详细资料

isInitialState

public volatile boolean isInitialState

lastCheckpointId

public long lastCheckpointId

processor

protected Processor processor

jobWorker

protected JobWorker jobWorker

reader

protected DataReader reader

writer

protected DataWriter writer

running

protected volatile boolean running

stopped

protected volatile boolean stopped

构造器详细资料

StreamTask

protected StreamTask(Processor processor,
                     JobWorker jobWorker,
                     long lastCheckpointId)

方法详细资料

recover

public ChannelRecoverInfo recover(boolean isRecover)

init

protected abstract void init()
                      throws Exception

Task initialization related work.

抛出:

Exception

close

public void close()

Close running tasks.

triggerCheckpoint

public boolean triggerCheckpoint(Long barrierId)

doCheckpoint

public void doCheckpoint(long checkpointId,
                         Map<String,OffsetInfo> inputPoints)

notifyCheckpointTimeout

public void notifyCheckpointTimeout(long checkpointId)

clearExpiredCpState

public void clearExpiredCpState(long checkpointId)

clearExpiredQueueMsg

public void clearExpiredQueueMsg(long checkpointId)

genOpCheckpointKey

public String genOpCheckpointKey(long checkpointId)

requestRollback

protected void requestRollback(String exceptionMsg)

isAlive

public boolean isAlive()