| Package | Description | 
|---|---|
| org.apache.hadoop.hdfs.server.federation.router | The router package includes the core services for a HDFS federation router. | 
| Modifier and Type | Method and Description | 
|---|---|
| ConnectionContext | ConnectionManager. getConnection(org.apache.hadoop.security.UserGroupInformation ugi,
             String nnAddress,
             Class<?> protocol)Fetches the next available proxy client in the pool. | 
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