org.apache.flink.streaming.runtime.io

类 StreamTaskNetworkInput<T>

java.lang.Object

org.apache.flink.streaming.runtime.io.StreamTaskNetworkInput<T>

所有已实现的接口:

Closeable, AutoCloseable, org.apache.flink.runtime.io.AvailabilityProvider, PushingAsyncDataInput<T>, StreamTaskInput<T>

@Internal
public final class StreamTaskNetworkInput<T>
extends Object
implements StreamTaskInput<T>

Implementation of StreamTaskInput that wraps an input from network taken from CheckpointedInputGate.

This internally uses a StatusWatermarkValve to keep track of Watermark and StreamStatus events, and forwards them to event subscribers once the StatusWatermarkValve determines the Watermark from all inputs has advanced, or that a StreamStatus needs to be propagated downstream to denote a status change.

Forwarding elements, watermarks, or status status elements must be protected by synchronizing on the given lock object. This ensures that we don't call methods on a StreamInputProcessor concurrently with the timer callback or other things.

嵌套类概要

从接口继承的嵌套类/接口 org.apache.flink.streaming.runtime.io.PushingAsyncDataInput

PushingAsyncDataInput.DataOutput<T>

从接口继承的嵌套类/接口 org.apache.flink.runtime.io.AvailabilityProvider

org.apache.flink.runtime.io.AvailabilityProvider.AvailabilityHelper

字段概要

从接口继承的字段 org.apache.flink.streaming.runtime.io.StreamTaskInput

UNSPECIFIED

从接口继承的字段 org.apache.flink.runtime.io.AvailabilityProvider

AVAILABLE

构造器概要

构造器

构造器和说明
StreamTaskNetworkInput(CheckpointedInputGate checkpointedInputGate, org.apache.flink.api.common.typeutils.TypeSerializer<?> inputSerializer, org.apache.flink.runtime.io.disk.iomanager.IOManager ioManager, StatusWatermarkValve statusWatermarkValve, int inputIndex)

方法概要

限定符和类型	方法和说明
void	close()
org.apache.flink.core.io.InputStatus	emitNext(PushingAsyncDataInput.DataOutput<T> output) Pushes the next element to the output from current data input, and returns the input status to indicate whether there are more available data in current input.
CompletableFuture<?>	getAvailableFuture()
int	getInputIndex() Returns the input index of this input.
CompletableFuture<Void>	prepareSnapshot(org.apache.flink.runtime.checkpoint.channel.ChannelStateWriter channelStateWriter, long checkpointId) Prepares to spill the in-flight input buffers as checkpoint snapshot.

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 org.apache.flink.runtime.io.AvailabilityProvider

isApproximatelyAvailable, isAvailable

构造器详细资料

StreamTaskNetworkInput

public StreamTaskNetworkInput(CheckpointedInputGate checkpointedInputGate,
                              org.apache.flink.api.common.typeutils.TypeSerializer<?> inputSerializer,
                              org.apache.flink.runtime.io.disk.iomanager.IOManager ioManager,
                              StatusWatermarkValve statusWatermarkValve,
                              int inputIndex)

方法详细资料

emitNext

public org.apache.flink.core.io.InputStatus emitNext(PushingAsyncDataInput.DataOutput<T> output)
                                              throws Exception

从接口复制的说明: PushingAsyncDataInput

Pushes the next element to the output from current data input, and returns the input status to indicate whether there are more available data in current input.

This method should be non blocking.

指定者:

emitNext 在接口中 PushingAsyncDataInput<T>

抛出:

Exception

getInputIndex

public int getInputIndex()

从接口复制的说明: StreamTaskInput

Returns the input index of this input.

指定者:

getInputIndex 在接口中 StreamTaskInput<T>

getAvailableFuture

public CompletableFuture<?> getAvailableFuture()

指定者:

getAvailableFuture 在接口中 org.apache.flink.runtime.io.AvailabilityProvider

prepareSnapshot

public CompletableFuture<Void> prepareSnapshot(org.apache.flink.runtime.checkpoint.channel.ChannelStateWriter channelStateWriter,
                                               long checkpointId)
                                        throws IOException

从接口复制的说明: StreamTaskInput

Prepares to spill the in-flight input buffers as checkpoint snapshot.

指定者:

prepareSnapshot 在接口中 StreamTaskInput<T>

抛出:

IOException

close

public void close()
           throws IOException

指定者:

close 在接口中 Closeable

指定者:

close 在接口中 AutoCloseable

抛出:

IOException