HRegionLocation (Apache HBase 1.2.12 API)

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java.lang.Object
- org.apache.hadoop.hbase.HRegionLocation

All Implemented Interfaces:

Comparable<HRegionLocation>
```
@InterfaceAudience.Public
@InterfaceStability.Evolving
public class HRegionLocation
extends Object
implements Comparable<HRegionLocation>
```
Data structure to hold HRegionInfo 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 HRegionInfo regionInfo

private long seqNum

private ServerName serverName

Constructor Summary

Constructors
Constructor and Description
`HRegionLocation(HRegionInfo regionInfo, ServerName serverName)`
`HRegionLocation(HRegionInfo regionInfo, ServerName serverName, long seqNum)`

Method Summary

Methods
Modifier and Type	Method and Description
`int`	`compareTo(HRegionLocation o)`
`boolean`	`equals(Object o)`
`String`	`getHostname()`
`String`	`getHostnamePort()`
`int`	`getPort()`
`HRegionInfo`	`getRegionInfo()`
`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 HRegionInfo regionInfo
```

serverName
```
private final ServerName serverName
```

seqNum
```
private final long seqNum
```

Constructor Detail

HRegionLocation

public HRegionLocation(HRegionInfo regionInfo,
               ServerName serverName)

HRegionLocation

public HRegionLocation(HRegionInfo 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
```
public HRegionInfo getRegionInfo()
```
  Returns:
  HRegionInfo
- 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>

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