| Package | Description | 
|---|---|
| org.apache.storm.networktopography | |
| org.apache.storm.testing | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | DefaultRackDNSToSwitchMappingThis class implements the  DNSToSwitchMappinginterface  It returns the DEFAULT_RACK for every host. | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | AlternateRackDNSToSwitchMappingThis class implements the  DNSToSwitchMappinginterface  It alternates bewteen RACK1 and RACK2 for the hosts. | 
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