Package org.apache.flink.streaming.runtime.io

Interface Summary

Interface	Description
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.

Class Summary

Class	Description
AbstractDataOutput<T>	Base class for all data outputs.
BlockingQueueBroker	Broker for the BlockingQueue used in StreamIterationHead and StreamIterationTail for implementing feedback streams.
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.
CheckpointBarrierUnaligner	CheckpointBarrierUnaligner is used for triggering checkpoint while reading the first barrier and keeping track of the number of received barriers and consumed barriers.
CheckpointedInputGate	The CheckpointedInputGate uses CheckpointBarrierHandler to handle incoming CheckpointBarrier from the InputGate.
InputGateUtil	Utility for dealing with input gates.
InputProcessorUtil	Utility for creating CheckpointedInputGate based on checkpoint mode for StreamOneInputProcessor and StreamTwoInputProcessor.
MultipleInputSelectionHandler	This handler is mainly used for selecting the next available input index in StreamMultipleInputProcessor.
RecordWriterOutput<OUT>	Implementation of Output that sends data using a RecordWriter.
StreamMultipleInputProcessor	Input processor for MultipleInputStreamOperator.
StreamOneInputProcessor<IN>	Input reader for OneInputStreamTask.
StreamTaskExternallyInducedSourceInput<T>	A subclass of StreamTaskSourceInput for ExternallyInducedSourceReader.
StreamTaskNetworkInput<T>	Implementation of StreamTaskInput that wraps an input from network taken from CheckpointedInputGate.
StreamTaskSourceInput<T>	Implementation of StreamTaskInput that reads data from the SourceOperator 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.