| Package | Description | 
|---|---|
| org.apache.hadoop.hdfs.server.namenode.ha | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | ConfiguredFailoverProxyProvider<T>A FailoverProxyProvider implementation which allows one to configure
 multiple URIs to connect to during fail-over. | 
| class  | InMemoryAliasMapFailoverProxyProvider<T>A  ConfiguredFailoverProxyProviderimplementation used to connect
 to an InMemoryAliasMap. | 
| class  | IPFailoverProxyProvider<T>A NNFailoverProxyProvider implementation which works on IP failover setup. | 
| class  | RequestHedgingProxyProvider<T>A FailoverProxyProvider implementation that technically does not "failover"
 per-se. | 
| class  | WrappedFailoverProxyProvider<T>A NNFailoverProxyProvider implementation which wrapps old implementations
 directly implementing the  FailoverProxyProviderinterface. | 
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