Package org.apache.hadoop.hbase

Class HRegionLocation

java.lang.Object

org.apache.hadoop.hbase.HRegionLocation

All Implemented Interfaces:

Comparable<HRegionLocation>

Direct Known Subclasses:

SnapshotRegionLocator.SnapshotHRegionLocation

@Public
public class HRegionLocation
extends Object
implements Comparable<HRegionLocation>

Data structure to hold RegionInfo and the address for the hosting HRegionServer. Immutable. Comparable, but we compare the 'location' only: i.e. the hostname and port, and *not* the regioninfo. This means two instances are the same if they refer to the same 'location' (the same hostname and port), though they may be carrying different regions. On a big cluster, each client will have thousands of instances of this object, often 100 000 of them if not million. It's important to keep the object size as small as possible.
This interface has been marked InterfaceAudience.Public in 0.96 and 0.98.

Field Summary

Fields

Modifier and Type	Field	Description
private final RegionInfo	regionInfo
private final long	seqNum
private final ServerName	serverName

Constructor Summary

Constructors

Constructor	Description
HRegionLocation(RegionInfo regionInfo, ServerName serverName)
HRegionLocation(RegionInfo regionInfo, ServerName serverName, long seqNum)

Method Summary

Modifier and Type	Method	Description
int	compareTo(HRegionLocation o)
boolean	equals(Object o)
String	getHostname()
String	getHostnamePort()	Returns String made of hostname and port formatted as per Addressing.createHostAndPortStr(String, int)
int	getPort()
RegionInfo	getRegion()	Returns regionInfo
long	getSeqNum()
ServerName	getServerName()
int	hashCode()
String	toString()

Methods inherited from class java.lang.Object

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

Field Details

regionInfo

private final RegionInfo regionInfo

serverName

private final ServerName serverName

seqNum

private final long seqNum

Constructor Details

HRegionLocation

public HRegionLocation(RegionInfo regionInfo,
 ServerName serverName)

HRegionLocation

public HRegionLocation(RegionInfo regionInfo,
 ServerName serverName,
 long seqNum)

Method Details

toString

public String toString()

Overrides:

toString in class Object

See Also:

• Object.toString()

equals

public boolean equals(Object o)

Overrides:

equals in class Object

See Also:

• Object.equals(java.lang.Object)

hashCode

public int hashCode()

Overrides:

hashCode in class Object

See Also:

• Object.hashCode()

getRegion

public RegionInfo getRegion()

Returns regionInfo

getHostname

public String getHostname()

getPort

public int getPort()

getSeqNum

public long getSeqNum()

getHostnamePort

public String getHostnamePort()

Returns String made of hostname and port formatted as per Addressing.createHostAndPortStr(String, int)

getServerName

public ServerName getServerName()

compareTo

public int compareTo(HRegionLocation o)

Specified by:

compareTo in interface Comparable<HRegionLocation>