org.apache.hadoop.hbase
Class HServerInfo

java.lang.Object
  org.apache.hadoop.hbase.HServerInfo

All Implemented Interfaces:

java.lang.Comparable<HServerInfo>, org.apache.hadoop.io.Writable, org.apache.hadoop.io.WritableComparable<HServerInfo>

public class HServerInfo
extends java.lang.Object
implements org.apache.hadoop.io.WritableComparable<HServerInfo>

HServerInfo is meta info about an HRegionServer. It is the token by which a master distingushes a particular regionserver from the rest. It holds hostname, ports, regionserver startcode, and load. Each server has a servername where servername is made up of a concatenation of hostname, port, and regionserver startcode. This servername is used in various places identifying this regionserver. Its even used as part of a pathname in the filesystem. As part of the initialization, master will pass the regionserver the address that it knows this regionserver by. In subsequent communications, the regionserver will pass a HServerInfo with the master-supplied address.

Nested Class Summary

static class

HServerInfo.LoadComparator Orders HServerInfos by load then name.

Constructor Summary

HServerInfo()

HServerInfo(HServerAddress serverAddress, int infoPort, java.lang.String hostname)
Constructor that creates a HServerInfo with a generated startcode and an empty load.

HServerInfo(HServerAddress serverAddress, long startCode, int infoPort, java.lang.String hostname)

HServerInfo(HServerInfo other)
Copy-constructor

Method Summary

int	compareTo(HServerInfo o)
boolean	equals(java.lang.Object obj)
java.lang.String	getHostname()
java.lang.String	getHostnamePort()
static java.lang.String	getHostnamePort(java.lang.String hostname, int port)
int	getInfoPort()
HServerLoad	getLoad()
HServerAddress	getServerAddress()
java.lang.String	getServerName() Gets the unique server instance name.
static java.lang.String	getServerName(HServerAddress address, long startCode)
static java.lang.String	getServerName(java.lang.String hostName, int port, long startCode)
static java.lang.String	getServerName(java.lang.String hostAndPort, long startcode)
long	getStartCode()
int	hashCode()
static boolean	isServer(java.util.Set<java.lang.String> servers, java.lang.String serverName, boolean hostAndPortOnly) Utility method that does a find of a servername or a hostandport combination in the passed Set.
void	readFields(java.io.DataInput in)
void	setLoad(HServerLoad load)
void	setServerAddress(HServerAddress serverAddress)
java.lang.String	toString()
void	write(java.io.DataOutput out)

Methods inherited from class java.lang.Object

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

Constructor Detail

HServerInfo

public HServerInfo()

HServerInfo

public HServerInfo(HServerAddress serverAddress,
                   int infoPort,
                   java.lang.String hostname)

Constructor that creates a HServerInfo with a generated startcode and an empty load.

Parameters:

serverAddress - An InetSocketAddress encased in a Writable

infoPort - Port the webui runs on.

hostname - Server hostname.

HServerInfo

public HServerInfo(HServerAddress serverAddress,
                   long startCode,
                   int infoPort,
                   java.lang.String hostname)

HServerInfo

public HServerInfo(HServerInfo other)

Copy-constructor

Parameters:

other -

Method Detail

getLoad

public HServerLoad getLoad()

setLoad

public void setLoad(HServerLoad load)

getServerAddress

public HServerAddress getServerAddress()

setServerAddress

public void setServerAddress(HServerAddress serverAddress)

getStartCode

public long getStartCode()

getInfoPort

public int getInfoPort()

getHostname

public java.lang.String getHostname()

getHostnamePort

public java.lang.String getHostnamePort()

Returns:

The hostname and port concatenated with a ':' as separator.

getHostnamePort

public static java.lang.String getHostnamePort(java.lang.String hostname,
                                               int port)

Parameters:

hostname -

port -

Returns:

The hostname and port concatenated with a ':' as separator.

getServerName

public java.lang.String getServerName()

Gets the unique server instance name. Includes the hostname, port, and start code.

Returns:

Server name made of the concatenation of hostname, port and startcode formatted as <hostname> ',' <port> ',' <startcode>

getServerName

public static java.lang.String getServerName(java.lang.String hostAndPort,
                                             long startcode)

getServerName

public static java.lang.String getServerName(HServerAddress address,
                                             long startCode)

Parameters:

address - Server address

startCode - Server startcode

Returns:

Server name made of the concatenation of hostname, port and startcode formatted as <hostname> ',' <port> ',' <startcode>

getServerName

public static java.lang.String getServerName(java.lang.String hostName,
                                             int port,
                                             long startCode)

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

Returns:

ServerName and load concatenated.

See Also:

getServerName(), getLoad()

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

readFields

public void readFields(java.io.DataInput in)
                throws java.io.IOException

Specified by:

readFields in interface org.apache.hadoop.io.Writable

Throws:

java.io.IOException

write

public void write(java.io.DataOutput out)
           throws java.io.IOException

Specified by:

write in interface org.apache.hadoop.io.Writable

Throws:

java.io.IOException

compareTo

public int compareTo(HServerInfo o)

Specified by:

compareTo in interface java.lang.Comparable<HServerInfo>

isServer

public static boolean isServer(java.util.Set<java.lang.String> servers,
                               java.lang.String serverName,
                               boolean hostAndPortOnly)

Utility method that does a find of a servername or a hostandport combination in the passed Set.

Parameters:

servers - Set of server names

serverName - Name to look for

hostAndPortOnly - If serverName is a hostname ':' port or hostname , port , startcode.

Returns:

True if serverName found in servers