Package org.apache.hadoop.hdfs.server.federation.resolver

Class RemoteLocation

java.lang.Object

org.apache.hadoop.hdfs.server.federation.router.RemoteLocationContext

org.apache.hadoop.hdfs.server.federation.resolver.RemoteLocation

All Implemented Interfaces:

Comparable<RemoteLocationContext>

public class RemoteLocation
extends RemoteLocationContext

A location in a remote namespace consisting of a nameservice ID and a HDFS path (destination). It also contains the federated location (source).

Constructor Summary

Constructors

Constructor	Description
RemoteLocation(String nsId, String dPath, String sPath)	Create a new remote location.
RemoteLocation(String nsId, String nnId, String dPath, String sPath)	Create a new remote location pointing to a particular namenode in the namespace.
RemoteLocation(RemoteLocation remoteLocation, String path)	Use the Ns and Nn of a remote location and another path to create a new remote location pointing.

Method Summary

Modifier and Type	Method	Description
String	getDest()	Destination in this location.
String	getNameserviceId()	Returns an identifier for a unique namespace.
String	getSrc()	Original source location.
String	toString()

Methods inherited from class org.apache.hadoop.hdfs.server.federation.router.RemoteLocationContext

compareTo, equals, hashCode

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Details

RemoteLocation

public RemoteLocation(String nsId,
 String dPath,
 String sPath)

Create a new remote location.

Parameters:

nsId - Destination namespace.

dPath - Path in the destination namespace.

sPath - Path in the federated level.

RemoteLocation

public RemoteLocation(String nsId,
 String nnId,
 String dPath,
 String sPath)

Create a new remote location pointing to a particular namenode in the namespace.

Parameters:

nsId - Destination namespace.

nnId - Destination namenode.

dPath - Path in the destination namespace.

sPath - Path in the federated level

RemoteLocation

public RemoteLocation(RemoteLocation remoteLocation,
 String path)

Use the Ns and Nn of a remote location and another path to create a new remote location pointing.

Parameters:

remoteLocation - A remoteLocation.

path - Path in the destination namespace.

Method Details

getNameserviceId

public String getNameserviceId()

Description copied from class: RemoteLocationContext

Returns an identifier for a unique namespace.

Specified by:

getNameserviceId in class RemoteLocationContext

Returns:

Namespace identifier.

getDest

public String getDest()

Description copied from class: RemoteLocationContext

Destination in this location. For example the path in a remote namespace.

Specified by:

getDest in class RemoteLocationContext

Returns:

Destination in this location.

getSrc

public String getSrc()

Description copied from class: RemoteLocationContext

Original source location.

Specified by:

getSrc in class RemoteLocationContext

Returns:

Source path.

toString

public String toString()

Overrides:

toString in class Object