Package org.apache.hadoop.yarn.nodelabels

Class NodeLabelUtil

java.lang.Object

org.apache.hadoop.yarn.nodelabels.NodeLabelUtil

public final class NodeLabelUtil
extends Object

Utility class for all NodeLabel and NodeAttribute operations.

Method Summary

Modifier and Type	Method	Description
static void	checkAndThrowAttributeName(String attributeName)
static void	checkAndThrowAttributePrefix(String prefix)
static void	checkAndThrowAttributeValue(String value)
static void	checkAndThrowLabelName(String label)
static Set<org.apache.hadoop.yarn.api.records.NodeAttribute>	filterAttributesByPrefix(Set<org.apache.hadoop.yarn.api.records.NodeAttribute> attributeSet, String prefix)	Filter a set of node attributes by a given prefix.
static boolean	isNodeAttributesEquals(Set<org.apache.hadoop.yarn.api.records.NodeAttribute> leftNodeAttributes, Set<org.apache.hadoop.yarn.api.records.NodeAttribute> rightNodeAttributes)	Are these two input node attributes the same.
static void	validateNodeAttributes(Set<org.apache.hadoop.yarn.api.records.NodeAttribute> attributeSet)	Validate if a given set of attributes are valid.

Methods inherited from class java.lang.Object

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

Method Details

checkAndThrowLabelName

public static void checkAndThrowLabelName(String label)
                                   throws IOException

Throws:

IOException

checkAndThrowAttributeName

public static void checkAndThrowAttributeName(String attributeName)
                                       throws IOException

Throws:

IOException

checkAndThrowAttributeValue

public static void checkAndThrowAttributeValue(String value)
                                        throws IOException

Throws:

IOException

checkAndThrowAttributePrefix

public static void checkAndThrowAttributePrefix(String prefix)
                                         throws IOException

Throws:

IOException

validateNodeAttributes

public static void validateNodeAttributes(Set<org.apache.hadoop.yarn.api.records.NodeAttribute> attributeSet)
                                   throws IOException

Validate if a given set of attributes are valid. Attributes could be invalid if any of following conditions is met:

• Missing prefix: the attribute doesn't have prefix defined
• Malformed attribute prefix: the prefix is not in valid format

Parameters:

attributeSet - node attribute set.

Throws:

IOException - io error occur.

filterAttributesByPrefix

public static Set<org.apache.hadoop.yarn.api.records.NodeAttribute> filterAttributesByPrefix(Set<org.apache.hadoop.yarn.api.records.NodeAttribute> attributeSet,
 String prefix)

Filter a set of node attributes by a given prefix. Returns a filtered set of node attributes whose prefix equals the given prefix. If the prefix is null or empty, then the original set is returned.

Parameters:

attributeSet - node attribute set

prefix - node attribute prefix

Returns:

a filtered set of node attributes

isNodeAttributesEquals

public static boolean isNodeAttributesEquals(Set<org.apache.hadoop.yarn.api.records.NodeAttribute> leftNodeAttributes,
 Set<org.apache.hadoop.yarn.api.records.NodeAttribute> rightNodeAttributes)

Are these two input node attributes the same.

Parameters:

leftNodeAttributes - left node attribute.

rightNodeAttributes - right node attribute.

Returns:

true if they are the same