| Package | Description | 
|---|---|
| org.apache.hadoop.hbase.ipc | Tools to help define network clients and servers. | 
| org.apache.hadoop.hbase.replication.regionserver | |
| org.apache.hadoop.hbase.security.token | |
| org.apache.hadoop.hbase.tool | 
| Class and Description | 
|---|
| AuthenticationTokenSecretManager Manages an internal list of secret keys used to sign new authentication
 tokens as they are generated, and to valid existing tokens used for
 authentication. | 
| Class and Description | 
|---|
| FsDelegationToken Helper class to obtain a filesystem delegation token. | 
| Class and Description | 
|---|
| AuthenticationKey Represents a secret key used for signing and verifying authentication tokens
 by  AuthenticationTokenSecretManager. | 
| AuthenticationTokenIdentifier Represents the identity information stored in an HBase authentication token. | 
| AuthenticationTokenSecretManager Manages an internal list of secret keys used to sign new authentication
 tokens as they are generated, and to valid existing tokens used for
 authentication. | 
| AuthenticationTokenSecretManager.LeaderElector | 
| ZKSecretWatcher Synchronizes token encryption keys across cluster nodes. | 
| Class and Description | 
|---|
| FsDelegationToken Helper class to obtain a filesystem delegation token. | 
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