Package org.apache.hadoop.hdfs.server.namenode

Class CheckpointSignature

java.lang.Object

org.apache.hadoop.hdfs.server.common.StorageInfo

org.apache.hadoop.hdfs.server.namenode.CheckpointSignature

All Implemented Interfaces:

Comparable<CheckpointSignature>

@Private
public class CheckpointSignature
extends StorageInfo
implements Comparable<CheckpointSignature>

A unique signature intended to identify checkpoint transactions.

Field Summary

Fields inherited from class org.apache.hadoop.hdfs.server.common.StorageInfo

clusterID, cTime, layoutVersion, namespaceID, STORAGE_FILE_VERSION, storageType

Constructor Summary

Constructors

Constructor	Description
CheckpointSignature(StorageInfo info, String blockpoolID, long mostRecentCheckpointTxId, long curSegmentTxId)

Method Summary

Modifier and Type	Method	Description
int	compareTo(CheckpointSignature o)
boolean	equals(Object o)
String	getBlockpoolID()	Get the block pool id from CheckpointSignature
String	getClusterID()	Get the cluster id from CheckpointSignature
long	getCurSegmentTxId()
long	getMostRecentCheckpointTxId()
int	hashCode()
void	setBlockpoolID(String blockpoolID)	Set the block pool id of CheckpointSignature.
String	toString()

Methods inherited from class org.apache.hadoop.hdfs.server.common.StorageInfo

checkStorageType, getClusterIdFromColonSeparatedString, getCTime, getLayoutVersion, getNamespaceID, getNsIdFromColonSeparatedString, getProperty, getServiceLayoutFeatureMap, getServiceLayoutVersion, readPreviousVersionProperties, readProperties, readPropertiesFile, setClusterId, setcTime, setFieldsFromProperties, setLayoutVersion, setNamespaceID, setServiceLayoutVersion, setStorageInfo, toColonSeparatedString, toMapString, versionSupportsFederation

Methods inherited from class java.lang.Object

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

Constructor Details

CheckpointSignature

public CheckpointSignature(StorageInfo info,
 String blockpoolID,
 long mostRecentCheckpointTxId,
 long curSegmentTxId)

Method Details

getClusterID

public String getClusterID()

Get the cluster id from CheckpointSignature

Overrides:

getClusterID in class StorageInfo

Returns:

the cluster id

getBlockpoolID

public String getBlockpoolID()

Get the block pool id from CheckpointSignature

Returns:

the block pool id

getMostRecentCheckpointTxId

public long getMostRecentCheckpointTxId()

getCurSegmentTxId

public long getCurSegmentTxId()

setBlockpoolID

public void setBlockpoolID(String blockpoolID)

Set the block pool id of CheckpointSignature.

Parameters:

blockpoolID - the new blockpool id

toString

public String toString()

Overrides:

toString in class StorageInfo

compareTo

public int compareTo(CheckpointSignature o)

Specified by:

compareTo in interface Comparable<CheckpointSignature>

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object