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

Interface NodeDescriptorsProvider<T>

All Known Implementing Classes:

AbstractNodeDescriptorsProvider, ConfigurationNodeAttributesProvider, ConfigurationNodeLabelsProvider, NodeAttributesProvider, NodeLabelsProvider, ScriptBasedNodeAttributesProvider, ScriptBasedNodeLabelsProvider

public interface NodeDescriptorsProvider<T>

Interface which will be responsible for fetching node descriptors, a node descriptor could be a NodeLabel or a NodeAttribute.

Method Summary

Modifier and Type	Method	Description
Set<T>	getDescriptors()	Provides the descriptors.
void	setDescriptors(Set<T> descriptors)	Sets a set of descriptors to the provider.

Method Details

getDescriptors

Set<T> getDescriptors()

Provides the descriptors. The provider is expected to give same descriptors continuously until there is a change. If null is returned then an empty set is assumed by the caller.

Returns:

Set of node descriptors applicable for a node

setDescriptors

void setDescriptors(Set<T> descriptors)

Sets a set of descriptors to the provider.

Parameters:

descriptors - node descriptors.