org.apache.flink.streaming.runtime.tasks

类 SourceOperatorStreamTask<T>

java.lang.Object

org.apache.flink.streaming.runtime.tasks.StreamTask<T,SourceOperator<T,?>>

org.apache.flink.streaming.runtime.tasks.SourceOperatorStreamTask<T>

所有已实现的接口:

org.apache.flink.runtime.jobgraph.tasks.CheckpointableTask, org.apache.flink.runtime.jobgraph.tasks.CoordinatedTask, org.apache.flink.runtime.jobgraph.tasks.TaskInvokable, AsyncExceptionHandler, ContainingTaskDetails

@Internal
public class SourceOperatorStreamTask<T>
extends StreamTask<T,SourceOperator<T,?>>

A subclass of StreamTask for executing the SourceOperator.

嵌套类概要

嵌套类

限定符和类型	类和说明
static class	SourceOperatorStreamTask.AsyncDataOutputToOutput<T> Implementation of PushingAsyncDataInput.DataOutput that wraps a specific Output.

字段概要

从类继承的字段 org.apache.flink.streaming.runtime.tasks.StreamTask

checkpointStorage, configuration, inputProcessor, LOG, mailboxProcessor, mainOperator, operatorChain, stateBackend, systemTimerService, timerService, TRIGGER_THREAD_GROUP

构造器概要

构造器

构造器和说明
SourceOperatorStreamTask(org.apache.flink.runtime.execution.Environment env)

方法概要

限定符和类型	方法和说明
protected void	advanceToEndOfEventTime() Emits the MAX_WATERMARK so that all registered timers are fired.
protected void	finishTask() Instructs the task to go through its normal termination routine, i.e. exit the run-loop and call StreamOperator.finish() and StreamOperator.close() on its operators.
void	init()
CompletableFuture<Boolean>	triggerCheckpointAsync(org.apache.flink.runtime.checkpoint.CheckpointMetaData checkpointMetaData, org.apache.flink.runtime.checkpoint.CheckpointOptions checkpointOptions)

从类继承的方法 org.apache.flink.streaming.runtime.tasks.StreamTask

abortCheckpointOnBarrier, afterInvoke, assertTriggeringCheckpointExceptions, cancel, cancelTask, cleanUp, cleanUpInternal, createRecordWriterDelegate, createStreamTaskStateInitializer, declineCheckpoint, dispatchOperatorEvent, endData, finalize, getAsyncCheckpointStartDelayNanos, getAsyncOperationsThreadPool, getCancelables, getCheckpointBarrierHandler, getCheckpointStorage, getCompletionFuture, getConfiguration, getEnvironment, getMailboxExecutorFactory, getName, getProcessingTimeServiceFactory, handleAsyncException, invoke, isCanceled, isFailing, isMailboxLoopRunning, isRunning, isUsingNonBlockingInput, maybeInterruptOnCancel, notifyCheckpointAbortAsync, notifyCheckpointCompleteAsync, processInput, restore, runMailboxLoop, runMailboxStep, setSynchronousSavepoint, setupNumRecordsInCounter, toString, triggerCheckpointOnBarrier

从类继承的方法 java.lang.Object

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

从接口继承的方法 org.apache.flink.streaming.runtime.tasks.ContainingTaskDetails

getExecutionConfig, getIndexInSubtaskGroup, getJobConfiguration, getUserCodeClassLoader

构造器详细资料

SourceOperatorStreamTask

public SourceOperatorStreamTask(org.apache.flink.runtime.execution.Environment env)
                         throws Exception

抛出:

Exception

方法详细资料

init

public void init()
          throws Exception

指定者:

init 在类中 StreamTask<T,SourceOperator<T,?>>

抛出:

Exception

finishTask

protected void finishTask()
                   throws Exception

从类复制的说明: StreamTask

Instructs the task to go through its normal termination routine, i.e. exit the run-loop and call StreamOperator.finish() and StreamOperator.close() on its operators.

This is used by the source task to get out of the run-loop when the job is stopped with a savepoint.

For tasks other than the source task, this method does nothing.

覆盖:

finishTask 在类中 StreamTask<T,SourceOperator<T,?>>

抛出:

Exception

triggerCheckpointAsync

public CompletableFuture<Boolean> triggerCheckpointAsync(org.apache.flink.runtime.checkpoint.CheckpointMetaData checkpointMetaData,
                                                         org.apache.flink.runtime.checkpoint.CheckpointOptions checkpointOptions)

指定者:

triggerCheckpointAsync 在接口中 org.apache.flink.runtime.jobgraph.tasks.CheckpointableTask

覆盖:

triggerCheckpointAsync 在类中 StreamTask<T,SourceOperator<T,?>>

advanceToEndOfEventTime

protected void advanceToEndOfEventTime()

从类复制的说明: StreamTask

Emits the MAX_WATERMARK so that all registered timers are fired.

This is used by the source task when the job is TERMINATED. In the case, we want all the timers registered throughout the pipeline to fire and the related state (e.g. windows) to be flushed.

For tasks other than the source task, this method does nothing.

覆盖:

advanceToEndOfEventTime 在类中 StreamTask<T,SourceOperator<T,?>>