Package org.apache.hadoop.yarn.applications.distributedshell

Class PlacementSpec

java.lang.Object

org.apache.hadoop.yarn.applications.distributedshell.PlacementSpec

public class PlacementSpec
extends java.lang.Object

Class encapsulating a SourceTag, number of container and a Placement Constraint.

Field Summary

Fields

Modifier and Type	Field	Description
org.apache.hadoop.yarn.api.resource.PlacementConstraint	constraint
java.lang.String	sourceTag

Constructor Summary

Constructors

Constructor	Description
PlacementSpec(java.lang.String sourceTag, int numContainers, org.apache.hadoop.yarn.api.resource.PlacementConstraint constraint)

Method Summary

Modifier and Type	Method	Description
int	getNumContainers()	Get the number of container for this spec.
static java.util.Map<java.lang.String,PlacementSpec>	parse(java.lang.String specs)	Parser to convert a string representation of a placement spec to mapping from source tag to Placement Constraint.
void	setNumContainers(int numContainers)	Set number of containers for this spec.

Methods inherited from class java.lang.Object

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

Field Detail

sourceTag

public final java.lang.String sourceTag

constraint

public final org.apache.hadoop.yarn.api.resource.PlacementConstraint constraint

Constructor Detail

PlacementSpec

public PlacementSpec(java.lang.String sourceTag,
                     int numContainers,
                     org.apache.hadoop.yarn.api.resource.PlacementConstraint constraint)

Method Detail

getNumContainers

public int getNumContainers()

Get the number of container for this spec.

Returns:

container count

setNumContainers

public void setNumContainers(int numContainers)

Set number of containers for this spec.

Parameters:

numContainers - number of containers.

parse

public static java.util.Map<java.lang.String,PlacementSpec> parse(java.lang.String specs)
                                                                 throws java.lang.IllegalArgumentException

Parser to convert a string representation of a placement spec to mapping from source tag to Placement Constraint.

Parameters:

specs - Placement spec.

Returns:

Mapping from source tag to placement constraint.

Throws:

java.lang.IllegalArgumentException