org.apache.hadoop.hbase

Class HRegionLocation

java.lang.Object

org.apache.hadoop.hbase.HRegionLocation

All Implemented Interfaces:

Comparable<HRegionLocation>

@InterfaceAudience.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 and Description
private RegionInfo	regionInfo
private long	seqNum
private ServerName	serverName

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method and 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() n
HRegionInfo	getRegionInfo() Deprecated. Since 2.0.0. Will remove in 3.0.0. Use getRegion()} instead.
long	getSeqNum()
ServerName	getServerName()
int	hashCode()
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

regionInfo

private final RegionInfo regionInfo

serverName

private final ServerName serverName

seqNum

private final long seqNum

Constructor Detail

HRegionLocation

public HRegionLocation(RegionInfo regionInfo,
                       ServerName serverName)

HRegionLocation

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

Method Detail

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()

getRegionInfo

@Deprecated
public HRegionInfo getRegionInfo()

Deprecated. Since 2.0.0. Will remove in 3.0.0. Use getRegion()} instead.

Returns:

Immutable HRegionInfo

getRegion

public RegionInfo getRegion()

n

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>