Package org.apache.hadoop.yarn.api.resource

Class PlacementConstraints.PlacementTargets

java.lang.Object

org.apache.hadoop.yarn.api.resource.PlacementConstraints.PlacementTargets

Enclosing class:

PlacementConstraints

public static class PlacementConstraints.PlacementTargets
extends Object

Class with static methods for constructing target expressions to be used in placement constraints.

Constructor Summary

Constructors

Constructor	Description
PlacementTargets()

Method Summary

Modifier and Type	Method	Description
static PlacementConstraint.TargetExpression	allocationTag(String... allocationTags)	Constructs a target expression on an allocation tag.
static PlacementConstraint.TargetExpression	allocationTagWithNamespace(String namespace, String... allocationTags)	Constructs a target expression on a set of allocation tags under a certain namespace.
static PlacementConstraint.TargetExpression	nodeAttribute(String attributeKey, String... attributeValues)	Constructs a target expression on a node attribute.
static PlacementConstraint.TargetExpression	nodePartition(String... nodePartitions)	Constructs a target expression on a node partition.

Methods inherited from class java.lang.Object

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

Constructor Details

PlacementTargets

public PlacementTargets()

Method Details

nodeAttribute

public static PlacementConstraint.TargetExpression nodeAttribute(String attributeKey,
 String... attributeValues)

Constructs a target expression on a node attribute. It is satisfied if the specified node attribute has one of the specified values.

Parameters:

attributeKey - the name of the node attribute

attributeValues - the set of values that the attribute should take values from

Returns:

the resulting expression on the node attribute

nodePartition

public static PlacementConstraint.TargetExpression nodePartition(String... nodePartitions)

Constructs a target expression on a node partition. It is satisfied if the specified node partition has one of the specified nodePartitions.

Parameters:

nodePartitions - the set of values that the attribute should take values from

Returns:

the resulting expression on the node attribute

allocationTag

public static PlacementConstraint.TargetExpression allocationTag(String... allocationTags)

Constructs a target expression on an allocation tag. It is satisfied if there are allocations with one of the given tags. The default namespace for these tags is AllocationTagNamespaceType.SELF, this only checks tags within the application.

Parameters:

allocationTags - the set of tags that the attribute should take values from

Returns:

the resulting expression on the allocation tags

allocationTagWithNamespace

public static PlacementConstraint.TargetExpression allocationTagWithNamespace(String namespace,
 String... allocationTags)

Constructs a target expression on a set of allocation tags under a certain namespace.

Parameters:

namespace - namespace of the allocation tags

allocationTags - allocation tags

Returns:

a target expression