@Private @Unstable

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

Package to encapsulate classes used to handle node labels and node attributes in NM.

Interface Summary

Interface	Description
NodeDescriptorsProvider<T>	Interface which will be responsible for fetching node descriptors, a node descriptor could be a NodeLabel or a NodeAttribute.

Class Summary

Class	Description
AbstractNodeDescriptorsProvider<T>	Provides base implementation of NodeDescriptorsProvider with Timer and expects subclass to provide TimerTask which can fetch node descriptors.
ConfigurationNodeAttributesProvider	Configuration based node attributes provider.
ConfigurationNodeLabelsProvider	Provides Node's Labels by constantly monitoring the configuration.
NodeAttributesProvider	Abstract class which will be responsible for fetching the node attributes.
NodeDescriptorsScriptRunner<T>	A node descriptors script runner periodically runs a script, parses the output to collect desired descriptors, and then post these descriptors to the given NodeDescriptorsProvider.
NodeLabelsProvider	Abstract class which will be responsible for fetching the node labels.
ScriptBasedNodeAttributesProvider	Node attribute provider that periodically runs a script to collect node attributes.
ScriptBasedNodeLabelsProvider	The class which provides functionality of getting the labels of the node using the configured node labels provider script.