| Package | Description | 
|---|---|
| org.apache.hadoop.hdfs.server.federation.metrics | Report metrics for Router-based Federation. | 
| org.apache.hadoop.hdfs.server.federation.router | The router package includes the core services for a HDFS federation router. | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | FederationRPCPerformanceMonitorCustomizable RPC performance monitor. | 
| Modifier and Type | Method and Description | 
|---|---|
| RouterRpcMonitor | RouterRpcServer. getRPCMonitor()Get the RPC monitor and metrics. | 
| Constructor and Description | 
|---|
| RouterRpcClient(org.apache.hadoop.conf.Configuration conf,
               org.apache.hadoop.hdfs.server.federation.router.Router router,
               org.apache.hadoop.hdfs.server.federation.resolver.ActiveNamenodeResolver resolver,
               RouterRpcMonitor monitor)Create a router RPC client to manage remote procedure calls to NNs. | 
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