org.apache.flink.streaming.runtime.tasks

Class StreamIterationTail<IN>

java.lang.Object

org.apache.flink.streaming.runtime.tasks.StreamTask<OUT,OneInputStreamOperator<IN,OUT>>

org.apache.flink.streaming.runtime.tasks.OneInputStreamTask<IN,IN>

org.apache.flink.streaming.runtime.tasks.StreamIterationTail<IN>

All Implemented Interfaces:

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 StreamIterationTail<IN>
extends OneInputStreamTask<IN,IN>

A special StreamTask that is used for executing feedback edges. This is used in combination with StreamIterationHead.

Field Summary

Fields inherited from class org.apache.flink.streaming.runtime.tasks.StreamTask

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

Constructor Summary

Constructors

Constructor and Description
StreamIterationTail(org.apache.flink.runtime.execution.Environment environment)

Method Summary

Modifier and Type	Method and Description
void	init()

Methods inherited from class org.apache.flink.streaming.runtime.tasks.OneInputStreamTask

getCheckpointBarrierHandler

Methods inherited from class org.apache.flink.streaming.runtime.tasks.StreamTask

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

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.flink.streaming.runtime.tasks.ContainingTaskDetails

getExecutionConfig, getIndexInSubtaskGroup, getJobConfiguration, getUserCodeClassLoader

Constructor Detail

StreamIterationTail

public StreamIterationTail(org.apache.flink.runtime.execution.Environment environment)
                    throws Exception

Throws:

Exception

Method Detail

init

public void init()
          throws Exception

Overrides:

init in class OneInputStreamTask<IN,IN>

Throws:

Exception