程序包 org.apache.flink.streaming.runtime.io

接口概要

接口	说明
BufferStorage	The BufferStorage takes the buffers and events from a data stream and adds them in a sequence.
PushingAsyncDataInput<T>	The variant of PullingAsyncDataInput that is defined for handling both network input and source input in a unified way via PushingAsyncDataInput.emitNext(DataOutput) instead of returning Optional.empty() via PullingAsyncDataInput.pollNext().
PushingAsyncDataInput.DataOutput<T>	Basic data output interface used in emitting the next element from data input.
StreamInputProcessor	Interface for processing records by StreamTask.
StreamTaskInput<T>	Basic interface for inputs of stream operators.

类概要

类	说明
AbstractDataOutput<T>	Base class for all data outputs.
BlockingQueueBroker	Broker for the BlockingQueue used in StreamIterationHead and StreamIterationTail for implementing feedback streams.
CachedBufferStorage	The CachedBufferStorage takes the buffers and events from a data stream and adds them to a memory queue.
CheckpointBarrierAligner	CheckpointBarrierAligner keep tracks of received CheckpointBarrier on given channels and controls the alignment, by deciding which channels should be blocked and when to release blocked channels.
CheckpointBarrierHandler	The CheckpointBarrierHandler reacts to checkpoint barrier arriving from the input channels.
CheckpointBarrierTracker	The CheckpointBarrierTracker keeps track of what checkpoint barriers have been received from which input channels.
CheckpointedInputGate	The CheckpointedInputGate uses CheckpointBarrierHandler to handle incoming CheckpointBarrier from the InputGate.
EmptyBufferStorage	Always empty implementation of BufferStorage.
InputGateUtil	Utility for dealing with input gates.
InputProcessorUtil	Utility for creating CheckpointedInputGate based on checkpoint mode for StreamOneInputProcessor and StreamTwoInputProcessor.
LinkedBufferStorage	Implementation of BufferStorage that links two BufferStorage together.
RecordWriterOutput<OUT>	Implementation of Output that sends data using a RecordWriter.
StreamOneInputProcessor<IN>	Input reader for OneInputStreamTask.
StreamTaskNetworkInput<T>	Implementation of StreamTaskInput that wraps an input from network taken from CheckpointedInputGate.
StreamTaskSourceInput<T>	Implementation of StreamTaskInput that reads data from the SourceReaderOperator and returns the InputStatus to indicate whether the source state is available, unavailable or finished.
StreamTwoInputProcessor<IN1,IN2>	Input reader for TwoInputStreamTask.
TwoInputSelectionHandler	This handler is mainly used for selecting the next available input index in StreamTwoInputProcessor.

枚举概要

枚举	说明
InputStatus	An InputStatus indicates one input state which might be currently available, not available or already finished.