org.apache.hadoop.hbase.util

Class DNS

java.lang.Object

org.apache.hadoop.hbase.util.DNS

@InterfaceAudience.Private
public final class DNS
extends Object

Wrapper around Hadoop's DNS class to hide reflection.

Field Summary

Fields

Modifier and Type	Field and Description
private static Method	GET_DEFAULT_HOST_METHOD
private static boolean	HAS_NEW_DNS_GET_DEFAULT_HOST_API

Constructor Summary

Constructors

Modifier	Constructor and Description
private	DNS()

Method Summary

Modifier and Type	Method and Description
static String	getDefaultHost(String strInterface, String nameserver) Wrapper around DNS.getDefaultHost(String, String), calling DNS.getDefaultHost(String, String, boolean) when available.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

HAS_NEW_DNS_GET_DEFAULT_HOST_API

private static boolean HAS_NEW_DNS_GET_DEFAULT_HOST_API

GET_DEFAULT_HOST_METHOD

private static Method GET_DEFAULT_HOST_METHOD

Constructor Detail

DNS

private DNS()

Method Detail

getDefaultHost

public static String getDefaultHost(String strInterface,
                                    String nameserver)
                             throws UnknownHostException

Wrapper around DNS.getDefaultHost(String, String), calling DNS.getDefaultHost(String, String, boolean) when available.

Parameters:

strInterface - The network interface to query.

nameserver - The DNS host name.

Returns:

The default host names associated with IPs bound to the network interface.

Throws:

UnknownHostException