# Package org.apache.hadoop.hdfs.server.diskbalancer.datamodel

Disk Balancer Data Model is the Data Model for the cluster that Disk Balancer is working against.

See: Description

- Class Summary
  Class | 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.

## Package org.apache.hadoop.hdfs.server.diskbalancer.datamodel Description

Disk Balancer Data Model is the Data Model for the cluster that Disk Balancer is working against. This information is read directly from NameNode or from a user supplied json model file. Here is the overview of the model maintained by diskBalancer. DiskBalancerCluster is a list of DiskBalancerDataNodes. DiskBalancerDataNodes is a collection of DiskBalancerVolumeSets DiskBalancerVolumeSets is a collection of DiskBalancerVolumes DiskBalancerVolumes represents actual volumes on DataNodes.

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