| Package | Description | 
|---|---|
| org.apache.hadoop.hdfs.server.blockmanagement | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | DatanodeAdminBackoffMonitorThis class implements the logic to track decommissioning and entering
 maintenance nodes, ensure all their blocks are adequately replicated
 before they are moved to the decommissioned or maintenance state. | 
| class  | DatanodeAdminDefaultMonitorChecks to see if datanodes have finished DECOMMISSION_INPROGRESS or
 ENTERING_MAINTENANCE state. | 
| class  | DatanodeAdminMonitorBaseThis abstract class provides some base methods which are inherited by
 the DatanodeAdmin BackOff and Default Monitors, which control decommission
 and maintenance mode. | 
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