| Package | Description | 
|---|---|
| org.apache.hadoop.hdfs.server.federation.router | The router package includes the core services for a HDFS federation router. | 
| org.apache.hadoop.hdfs.server.federation.store.protocol | Contains the abstract definitions of the API request and response objects for
 the various state store APIs. | 
| org.apache.hadoop.hdfs.server.federation.store.protocol.impl.pb | Protobuf implementations of FederationProtocolBase request/response objects
 used by state store APIs. | 
| Modifier and Type | Method and Description | 
|---|---|
| EnterSafeModeResponse | RouterStateManager. enterSafeMode(EnterSafeModeRequest request)Enter safe mode and change Router state to RouterServiceState#SAFEMODE. | 
| EnterSafeModeResponse | RouterAdminServer. enterSafeMode(EnterSafeModeRequest request) | 
| Modifier and Type | Method and Description | 
|---|---|
| static EnterSafeModeRequest | EnterSafeModeRequest. newInstance() | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | EnterSafeModeRequestPBImplProtobuf implementation of the state store API object
 EnterSafeModeRequest. | 
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