org.apache.hadoop.net

类 CachedDNSToSwitchMapping

java.lang.Object

org.apache.hadoop.net.CachedDNSToSwitchMapping

所有已实现的接口:

DNSToSwitchMapping

直接已知子类:

ScriptBasedMapping

public class CachedDNSToSwitchMapping
extends Object
implements DNSToSwitchMapping

A cached implementation of DNSToSwitchMapping that takes an raw DNSToSwitchMapping and stores the resolved network location in a cache. The following calls to a resolved network location will get its location from the cache.

字段概要

字段

限定符和类型	字段和说明
protected DNSToSwitchMapping	rawMapping

构造器概要

构造器

构造器和说明
CachedDNSToSwitchMapping(DNSToSwitchMapping rawMapping)

方法概要

方法

限定符和类型	方法和说明
List<String>	resolve(List<String> names) Resolves a list of DNS-names/IP-addresses and returns back a list of switch information (network paths).

从类继承的方法 java.lang.Object

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

字段详细资料

rawMapping

protected DNSToSwitchMapping rawMapping

构造器详细资料

CachedDNSToSwitchMapping

public CachedDNSToSwitchMapping(DNSToSwitchMapping rawMapping)

方法详细资料

resolve

public List<String> resolve(List<String> names)

从接口复制的说明: DNSToSwitchMapping

Resolves a list of DNS-names/IP-addresses and returns back a list of switch information (network paths). One-to-one correspondence must be maintained between the elements in the lists. Consider an element in the argument list - x.y.com. The switch information that is returned must be a network path of the form /foo/rack, where / is the root, and 'foo' is the switch where 'rack' is connected. Note the hostname/ip-address is not part of the returned path. The network topology of the cluster would determine the number of components in the network path.

指定者:

resolve 在接口中 DNSToSwitchMapping

返回:

list of resolved network paths