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

Interface Summary

Interface	Description
CheckpointBarrierBehaviourController	Controls when the checkpoint should be actually triggered.
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.
AlignedController	Controller for aligned checkpoints.
AlternatingController	Controller that can alternate between aligned and unaligned checkpoints.
BlockingQueueBroker	Broker for the BlockingQueue used in StreamIterationHead and StreamIterationTail for implementing feedback streams.
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.
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.
SingleCheckpointBarrierHandler	SingleCheckpointBarrierHandler is used for triggering checkpoint while reading the first barrier and keeping track of the number of received barriers and consumed barriers.
StreamMultipleInputProcessor	Input processor for MultipleInputStreamOperator.
StreamMultipleInputProcessorFactory	A factory for StreamMultipleInputProcessor.
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.
StreamTwoInputProcessorFactory	A factory for StreamTwoInputProcessor.
TwoInputSelectionHandler	This handler is mainly used for selecting the next available input index in StreamTwoInputProcessor.
UnalignedController	Controller for unaligned checkpoints.