| Package | Description | 
|---|---|
| org.apache.hadoop.yarn.server.router | Router Server package. | 
| org.apache.hadoop.yarn.server.router.clientrm | Router ClientRM Proxy Service package. | 
| Class and Description | 
|---|
| RouterClientRMService RouterClientRMService is a service that runs on each router that can be used
 to intercept and inspect  ApplicationClientProtocolmessages from
 client to the cluster resource manager. | 
| Class and Description | 
|---|
| AbstractClientRequestInterceptor Implements the  ClientRequestInterceptorinterface and provides common
 functionality which can can be used and/or extended by other concrete
 intercepter classes. | 
| ClientRequestInterceptor Defines the contract to be implemented by the request intercepter classes,
 that can be used to intercept and inspect messages sent from the client to
 the resource manager. | 
| RouterClientRMService.RequestInterceptorChainWrapper Private structure for encapsulating RequestInterceptor and user instances. | 
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