org.apache.hadoop.hdfs.server.protocol
Class DatanodeStorage

java.lang.Object
  org.apache.hadoop.hdfs.server.protocol.DatanodeStorage

public class DatanodeStorage
extends Object

Class captures information of a storage in Datanode.

Nested Class Summary

static class

DatanodeStorage.State The state of the storage.

Constructor Summary

DatanodeStorage(String storageID)
Create a storage with DatanodeStorage.State.NORMAL and StorageType.DEFAULT.

DatanodeStorage(String sid, DatanodeStorage.State s, StorageType sm)

Method Summary

boolean	equals(Object other)
static String	generateUuid() Generate new storage ID.
DatanodeStorage.State	getState()
String	getStorageID()
StorageType	getStorageType()
int	hashCode()

Methods inherited from class java.lang.Object

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

Constructor Detail

DatanodeStorage

public DatanodeStorage(String storageID)

Create a storage with DatanodeStorage.State.NORMAL and StorageType.DEFAULT.

Parameters:

storageID -

DatanodeStorage

public DatanodeStorage(String sid,
                       DatanodeStorage.State s,
                       StorageType sm)

Method Detail

getStorageID

public String getStorageID()

getState

public DatanodeStorage.State getState()

getStorageType

public StorageType getStorageType()

generateUuid

public static String generateUuid()

Generate new storage ID. The format of this string can be changed in the future without requiring that old storage IDs be updated.

Returns:

unique storage ID

equals

public boolean equals(Object other)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object