| Package | Description | 
|---|---|
| org.apache.hadoop.yarn.server | Licensed to the Apache Software Foundation (ASF) under one or more
 contributor license agreements. | 
| org.apache.hadoop.yarn.server.uam | Licensed to the Apache Software Foundation (ASF) under one or more
 contributor license agreements. | 
| Class and Description | 
|---|
| AMRMClientRelayer A component that sits in between AMRMClient(Impl) and Yarn RM. | 
| Class and Description | 
|---|
| AMHeartbeatRequestHandler Extends Thread and provides an implementation that is used for processing the
 AM heart beat request asynchronously and sending back the response using the
 callback method registered with the system. | 
| AMRMClientRelayer A component that sits in between AMRMClient(Impl) and Yarn RM. | 
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