| Package | Description | 
|---|---|
| org.apache.hadoop.net | Network-related classes. | 
| Class and Description | 
|---|
| AbstractDNSToSwitchMapping This is a base class for DNS to Switch mappings. | 
| CachedDNSToSwitchMapping A cached implementation of DNSToSwitchMapping that takes an
 raw DNSToSwitchMapping and stores the resolved network location in 
 a cache. | 
| DNSToSwitchMapping An interface that must be implemented to allow pluggable
 DNS-name/IP-address to RackID resolvers. | 
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