Package org.apache.hadoop.net

Interface Node

All Known Subinterfaces:

InnerNode

All Known Implementing Classes:

InnerNodeImpl, NodeBase

@LimitedPrivate({"HDFS","MapReduce"})
@Unstable
public interface Node

The interface defines a node in a network topology. A node may be a leave representing a data node or an inner node representing a datacenter or rack. Each data has a name and its location in the network is decided by a string with syntax similar to a file name. For example, a data node's name is hostname:port# and if it's located at rack "orange" in datacenter "dog", the string representation of its network location is /dog/orange

Method Summary

Modifier and Type	Method	Description
int	getLevel()
java.lang.String	getName()
java.lang.String	getNetworkLocation()
Node	getParent()
void	setLevel(int i)	Set this node's level in the tree
void	setNetworkLocation(java.lang.String location)	Set this node's network location
void	setParent(Node parent)	Set this node's parent

Method Detail

getNetworkLocation

java.lang.String getNetworkLocation()

Returns:

the string representation of this node's network location

setNetworkLocation

void setNetworkLocation(java.lang.String location)

Set this node's network location

Parameters:

location - the location

getName

java.lang.String getName()

Returns:

this node's name

getParent

Node getParent()

Returns:

this node's parent

setParent

void setParent(Node parent)

Set this node's parent

Parameters:

parent - the parent

getLevel

int getLevel()

Returns:

this node's level in the tree. E.g. the root of a tree returns 0 and its children return 1

setLevel

void setLevel(int i)

Set this node's level in the tree

Parameters:

i - the level