Package org.apache.hadoop.yarn.server.resourcemanager.nodelabels

Class RMNodeLabelsMappingProvider

java.lang.Object

org.apache.hadoop.service.AbstractService

org.apache.hadoop.yarn.server.resourcemanager.nodelabels.RMNodeLabelsMappingProvider

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable, org.apache.hadoop.service.Service

public abstract class RMNodeLabelsMappingProvider
extends org.apache.hadoop.service.AbstractService

Interface which is responsible for providing the node -> labels map.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.hadoop.service.Service

org.apache.hadoop.service.Service.STATE

Constructor Summary

Constructors

Constructor	Description
RMNodeLabelsMappingProvider(java.lang.String name)

Method Summary

Modifier and Type	Method	Description
abstract java.util.Map<org.apache.hadoop.yarn.api.records.NodeId,java.util.Set<org.apache.hadoop.yarn.api.records.NodeLabel>>	getNodeLabels(java.util.Set<org.apache.hadoop.yarn.api.records.NodeId> nodes)	Provides the labels.

Methods inherited from class org.apache.hadoop.service.AbstractService

close, getBlockers, getConfig, getFailureCause, getFailureState, getLifecycleHistory, getName, getServiceState, getStartTime, init, isInState, noteFailure, putBlocker, registerGlobalListener, registerServiceListener, removeBlocker, serviceInit, serviceStart, serviceStop, setConfig, start, stop, toString, unregisterGlobalListener, unregisterServiceListener, waitForServiceToStop

Methods inherited from class java.lang.Object

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

Constructor Detail

RMNodeLabelsMappingProvider

public RMNodeLabelsMappingProvider(java.lang.String name)

Method Detail

getNodeLabels

public abstract java.util.Map<org.apache.hadoop.yarn.api.records.NodeId,java.util.Set<org.apache.hadoop.yarn.api.records.NodeLabel>> getNodeLabels(java.util.Set<org.apache.hadoop.yarn.api.records.NodeId> nodes)

Provides the labels. It is expected to give same Labels continuously until there is a change in labels.

Parameters:

nodes - to fetch labels

Returns:

Set of node label strings applicable for a node