| Package | Description | 
|---|---|
| org.apache.hadoop.hbase.constraint | Restrict the domain of a data attribute, often times to fulfill business rules/requirements. | 
| org.apache.hadoop.hbase.coprocessor | Table of Contents | 
| org.apache.hadoop.hbase.coprocessor.example | |
| org.apache.hadoop.hbase.security.access | |
| org.apache.hadoop.hbase.security.visibility | |
| org.apache.hadoop.hbase.tool | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | ConstraintProcessorProcesses multiple  Constraintson a given table. | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | BaseMasterAndRegionObserver | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | ZooKeeperScanPolicyObserverThis is an example showing how a RegionObserver could configured
 via ZooKeeper in order to control a Region compaction, flush, and scan policy. | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | AccessControllerProvides basic authorization checks for data access and administrative
 operations. | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | VisibilityControllerCoprocessor that has both the MasterObserver and RegionObserver implemented that supports in
 visibility labels | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | WriteSinkCoprocessorThis coprocessor 'shallows' all the writes. | 
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