Package org.apache.hadoop.yarn.api.records

Class NodeAttribute

java.lang.Object

org.apache.hadoop.yarn.api.records.NodeAttribute

@Public
@Unstable
public abstract class NodeAttribute
extends Object

Node Attribute is a kind of a label which represents one of the attribute/feature of a Node. Its different from node partition label as resource guarantees across the queues will not be maintained for these type of labels.

A given Node can be mapped with any kind of attribute, few examples are HAS_SSD=true, JAVA_VERSION=JDK1.8, OS_TYPE=WINDOWS.

Its not compulsory for all the attributes to have value, empty string is the default value of the NodeAttributeType.STRING

Node Attribute Prefix is used as namespace to segregate the attributes.

Field Summary

Fields

Modifier and Type	Field	Description
static final String	PREFIX_CENTRALIZED
static final String	PREFIX_DISTRIBUTED

Constructor Summary

Constructors

Constructor	Description
NodeAttribute()

Method Summary

Modifier and Type	Method	Description
abstract NodeAttributeKey	getAttributeKey()
abstract NodeAttributeType	getAttributeType()
abstract String	getAttributeValue()
static NodeAttribute	newInstance(String attributePrefix, String attributeName, NodeAttributeType attributeType, String attributeValue)
static NodeAttribute	newInstance(String attributeName, NodeAttributeType attributeType, String attributeValue)
abstract void	setAttributeKey(NodeAttributeKey attributeKey)
abstract void	setAttributeType(NodeAttributeType attributeType)
abstract void	setAttributeValue(String attributeValue)

Methods inherited from class java.lang.Object

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

Field Details

PREFIX_DISTRIBUTED

public static final String PREFIX_DISTRIBUTED

See Also:

• Constant Field Values

PREFIX_CENTRALIZED

public static final String PREFIX_CENTRALIZED

See Also:

• Constant Field Values

Constructor Details

NodeAttribute

public NodeAttribute()

Method Details

newInstance

public static NodeAttribute newInstance(String attributeName,
 NodeAttributeType attributeType,
 String attributeValue)

newInstance

public static NodeAttribute newInstance(String attributePrefix,
 String attributeName,
 NodeAttributeType attributeType,
 String attributeValue)

getAttributeKey

@Public
@Unstable
public abstract NodeAttributeKey getAttributeKey()

setAttributeKey

@Public
@Unstable
public abstract void setAttributeKey(NodeAttributeKey attributeKey)

getAttributeValue

@Public
@Unstable
public abstract String getAttributeValue()

setAttributeValue

@Public
@Unstable
public abstract void setAttributeValue(String attributeValue)

getAttributeType

@Public
@Unstable
public abstract NodeAttributeType getAttributeType()

setAttributeType

@Public
@Unstable
public abstract void setAttributeType(NodeAttributeType attributeType)