| Package | Description | 
|---|---|
| org.apache.hadoop.hdfs.server.diskbalancer.command | Commands for disk balancer command line tool. | 
| org.apache.hadoop.hdfs.server.diskbalancer.connectors | Connectors package is a set of logical connectors that connect
 to various data sources to read the hadoop cluster information. | 
| org.apache.hadoop.hdfs.server.diskbalancer.datamodel | Disk Balancer Data Model is the Data Model for the cluster that
 Disk Balancer is working against. | 
| org.apache.hadoop.hdfs.server.diskbalancer.planner | Planner takes a DiskBalancerVolumeSet, threshold and
 computes a series of steps that lead to an even data
 distribution between volumes of this DiskBalancerVolumeSet. | 
| Class and Description | 
|---|
| DiskBalancerCluster DiskBalancerCluster represents the nodes that we are working against. | 
| DiskBalancerDataNode DiskBalancerDataNode represents a DataNode that exists in the cluster. | 
| Class and Description | 
|---|
| DiskBalancerDataNode DiskBalancerDataNode represents a DataNode that exists in the cluster. | 
| Class and Description | 
|---|
| DiskBalancerCluster DiskBalancerCluster represents the nodes that we are working against. | 
| DiskBalancerDataNode DiskBalancerDataNode represents a DataNode that exists in the cluster. | 
| DiskBalancerVolume DiskBalancerVolume represents a volume in the DataNode. | 
| DiskBalancerVolumeSet DiskBalancerVolumeSet is a collection of storage devices on the
 data node which are of similar StorageType. | 
| Class and Description | 
|---|
| DiskBalancerDataNode DiskBalancerDataNode represents a DataNode that exists in the cluster. | 
| DiskBalancerVolume DiskBalancerVolume represents a volume in the DataNode. | 
| DiskBalancerVolumeSet DiskBalancerVolumeSet is a collection of storage devices on the
 data node which are of similar StorageType. | 
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