Package org.apache.flink.streaming.api.graph

Class AdaptiveGraphManager

java.lang.Object

org.apache.flink.streaming.api.graph.AdaptiveGraphManager

All Implemented Interfaces:

AdaptiveGraphGenerator, StreamGraphContext.StreamGraphUpdateListener

@Internal
public class AdaptiveGraphManager
extends Object
implements AdaptiveGraphGenerator, StreamGraphContext.StreamGraphUpdateListener

Default implementation for AdaptiveGraphGenerator.

Constructor Summary

Constructors

Constructor	Description
AdaptiveGraphManager(ClassLoader userClassloader, StreamGraph streamGraph, Executor serializationExecutor)

Method Summary

Modifier and Type	Method	Description
void	addFinishedStreamNodeIds(List<Integer> finishedStreamNodeIds)
Optional<JobVertexID>	findVertexByStreamNodeId(int streamNodeId)
JobGraph	getJobGraph()	Retrieves the JobGraph representation of the current state of the Flink job.
List<StreamEdge>	getOutputStreamEdges(IntermediateDataSetID intermediateDataSetId)	Retrieves the stream edges that subscribe to the IntermediateDataSet.
int	getPendingOperatorsCount()	Retrieves the number of operators that have not yet been converted to job vertex.
Integer	getProducerStreamNodeId(IntermediateDataSetID intermediateDataSetId)	Retrieves the ID of the stream node that produces the IntermediateDataSet.
StreamGraphContext	getStreamGraphContext()	Retrieves the StreamGraphContext which provides a read-only view of the StreamGraph and methods to modify its StreamEdges and StreamNodes.
String	getStreamGraphJson()
StreamNodeForwardGroup	getStreamNodeForwardGroupByVertexId(JobVertexID jobVertexId)	Retrieves the StreamNodeForwardGroup which provides a stream node level ForwardGroup.
List<Integer>	getStreamNodeIdsByJobVertexId(JobVertexID jobVertexId)	Retrieves the IDs of stream nodes that belong to the given job vertex.
List<JobVertex>	onJobVertexFinished(JobVertexID finishedJobVertexId)	Responds to notifications that a JobVertex has completed execution.
void	onStreamGraphUpdated()	This method is called whenever the StreamGraph is updated.

Methods inherited from class java.lang.Object

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

Constructor Details

AdaptiveGraphManager

public AdaptiveGraphManager(ClassLoader userClassloader,
 StreamGraph streamGraph,
 Executor serializationExecutor)

Method Details

getJobGraph

public JobGraph getJobGraph()

Description copied from interface: AdaptiveGraphGenerator

Retrieves the JobGraph representation of the current state of the Flink job.

Specified by:

getJobGraph in interface AdaptiveGraphGenerator

Returns:

The JobGraph instance.

getStreamGraphContext

public StreamGraphContext getStreamGraphContext()

Description copied from interface: AdaptiveGraphGenerator

Retrieves the StreamGraphContext which provides a read-only view of the StreamGraph and methods to modify its StreamEdges and StreamNodes.

Specified by:

getStreamGraphContext in interface AdaptiveGraphGenerator

Returns:

an instance of StreamGraphContext.

onJobVertexFinished

public List<JobVertex> onJobVertexFinished(JobVertexID finishedJobVertexId)

Description copied from interface: AdaptiveGraphGenerator

Responds to notifications that a JobVertex has completed execution. This method generates new job vertices, incorporates them into the JobGraph, and returns a list of the newly created JobVertex instances.

Specified by:

onJobVertexFinished in interface AdaptiveGraphGenerator

Parameters:

finishedJobVertexId - The ID of the completed JobVertex.

Returns:

A list of the newly added JobVertex instances to the JobGraph.

addFinishedStreamNodeIds

public void addFinishedStreamNodeIds(List<Integer> finishedStreamNodeIds)

getStreamNodeForwardGroupByVertexId

public StreamNodeForwardGroup getStreamNodeForwardGroupByVertexId(JobVertexID jobVertexId)

Retrieves the StreamNodeForwardGroup which provides a stream node level ForwardGroup.

Parameters:

jobVertexId - The ID of the JobVertex.

Returns:

An instance of StreamNodeForwardGroup.

getPendingOperatorsCount

public int getPendingOperatorsCount()

Retrieves the number of operators that have not yet been converted to job vertex.

Returns:

The number of unconverted operators.

getStreamNodeIdsByJobVertexId

public List<Integer> getStreamNodeIdsByJobVertexId(JobVertexID jobVertexId)

Retrieves the IDs of stream nodes that belong to the given job vertex.

Parameters:

jobVertexId - The ID of the JobVertex.

Returns:

A list of IDs of stream nodes that belong to the job vertex.

getProducerStreamNodeId

public Integer getProducerStreamNodeId(IntermediateDataSetID intermediateDataSetId)

Retrieves the ID of the stream node that produces the IntermediateDataSet.

Parameters:

intermediateDataSetId - The ID of the IntermediateDataSet.

Returns:

The ID of the stream node that produces the IntermediateDataSet.

getOutputStreamEdges

public List<StreamEdge> getOutputStreamEdges(IntermediateDataSetID intermediateDataSetId)

Retrieves the stream edges that subscribe to the IntermediateDataSet.

Parameters:

intermediateDataSetId - the ID of the IntermediateDataSet

Returns:

the stream edges that subscribe to the IntermediateDataSet

findVertexByStreamNodeId

public Optional<JobVertexID> findVertexByStreamNodeId(int streamNodeId)

getStreamGraphJson

public String getStreamGraphJson()

onStreamGraphUpdated

public void onStreamGraphUpdated()

Description copied from interface: StreamGraphContext.StreamGraphUpdateListener

This method is called whenever the StreamGraph is updated.

Specified by:

onStreamGraphUpdated in interface StreamGraphContext.StreamGraphUpdateListener