org.apache.flink.runtime.managementgraph

Class ManagementStage

java.lang.Object

org.apache.flink.runtime.managementgraph.ManagementAttachment

org.apache.flink.runtime.managementgraph.ManagementStage

public final class ManagementStage
extends ManagementAttachment

This class implements a management stage of a ManagementGraph. The stage is derived from an execution stage which is used in Nephele's internal scheduling structure.

This class is not thread-safe.

Constructor Summary

Constructors

Constructor and Description
ManagementStage(ManagementGraph managementGraph, int stageNumber) Constructs a new management stage.

Method Summary

Methods

Modifier and Type	Method and Description
ManagementGraph	getGraph() Returns the management graph this management stage is part of.
ManagementGroupVertex	getGroupVertex(int index) Returns the management group vertex with the given index.
ManagementGroupVertex	getInputGroupVertex(int index) Returns the input group vertex in this stage with the given index.
ManagementVertex	getInputManagementVertex(int index) Returns the output management vertex with the given index or null if no such vertex exists.
int	getNumberOfGroupVertices() Returns the number of group vertices included in this management stage.
int	getNumberOfInputGroupVertices() Returns the number of input group vertices in this stage.
int	getNumberOfInputManagementVertices() Returns the number of input management vertices in this stage, i.e.
int	getNumberOfOutputGroupVertices() Returns the number of output group vertices in this stage.
int	getNumberOfOutputManagementVertices() Returns the number of output management vertices in this stage, i.e.
ManagementGroupVertex	getOutputGroupVertex(int index) Returns the output group vertex in this stage with the given index.
ManagementVertex	getOutputManagementVertex(int index) Returns the input management vertex with the given index or null if no such vertex exists.
int	getStageNumber() Returns this management stage's number.

Methods inherited from class org.apache.flink.runtime.managementgraph.ManagementAttachment

getAttachment, setAttachment

Methods inherited from class java.lang.Object

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

Constructor Detail

ManagementStage

public ManagementStage(ManagementGraph managementGraph,
               int stageNumber)

Constructs a new management stage.

Parameters:

managementGraph - the management graph this management stage belongs to

stageNumber - the number of the stage

Method Detail

getGraph

public ManagementGraph getGraph()

Returns the management graph this management stage is part of.

Returns:

the management graph this management stage is part of

getStageNumber

public int getStageNumber()

Returns this management stage's number.

Returns:

this management stage's number

getNumberOfGroupVertices

public int getNumberOfGroupVertices()

Returns the number of group vertices included in this management stage.

Returns:

the number of group vertices included in this management stage

getGroupVertex

public ManagementGroupVertex getGroupVertex(int index)

Returns the management group vertex with the given index.

Parameters:

index - the index of the group vertex to be returned

Returns:

the group vertex with the given index or null if no such vertex exists

getNumberOfInputManagementVertices

public int getNumberOfInputManagementVertices()

Returns the number of input management vertices in this stage, i.e. the number of management vertices which are connected to vertices in a lower stage or have no input channels.

Returns:

the number of input vertices in this stage

getNumberOfOutputManagementVertices

public int getNumberOfOutputManagementVertices()

Returns the number of output management vertices in this stage, i.e. the number of management vertices which are connected to vertices in a higher stage or have no output channels.

Returns:

the number of output vertices in this stage

getInputManagementVertex

public ManagementVertex getInputManagementVertex(int index)

Returns the output management vertex with the given index or null if no such vertex exists.

Parameters:

index - the index of the vertex to be selected.

Returns:

the output management vertex with the given index or null if no such vertex exists

getOutputManagementVertex

public ManagementVertex getOutputManagementVertex(int index)

Returns the input management vertex with the given index or null if no such vertex exists.

Parameters:

index - the index of the vertex to be selected.

Returns:

the input management vertex with the given index or null if no such vertex exists

getNumberOfInputGroupVertices

public int getNumberOfInputGroupVertices()

Returns the number of input group vertices in this stage. Input group vertices are those vertices which have incoming edges from group vertices of a lower stage.

Returns:

the number of input group vertices in this stage

getInputGroupVertex

public ManagementGroupVertex getInputGroupVertex(int index)

Returns the input group vertex in this stage with the given index. Input group vertices are those vertices which have incoming edges from group vertices of a lower stage.

Parameters:

index - the index of the input group vertex to return

Returns:

the input group vertex with the given index or null if no such vertex exists

getNumberOfOutputGroupVertices

public int getNumberOfOutputGroupVertices()

Returns the number of output group vertices in this stage. Output group vertices are those vertices which have outgoing edges to group vertices of a higher stage.

Returns:

the number of output group vertices in this stage

getOutputGroupVertex

public ManagementGroupVertex getOutputGroupVertex(int index)

Returns the output group vertex in this stage with the given index. Output group vertices are those vertices which have outgoing edges to group vertices of a higher stage.

Parameters:

index - the index of the output group vertex to return

Returns:

the output group vertex with the given index or null if no such vertex exists