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apache / hadoop-site / 952d547359cafef280f0a0324055741b2ed55be1 / . / content / docs / r3.3.1 / hadoop-project-dist / hadoop-hdfs / build / source / hadoop-hdfs-project / hadoop-hdfs / target / api / org / apache / hadoop / hdfs / server / diskbalancer / datamodel / package-summary.html
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<h1 title="Package" class="title">Package&nbsp;org.apache.hadoop.hdfs.server.diskbalancer.datamodel</h1>
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<div class="block">Disk Balancer Data Model is the Data Model for the cluster that
Disk Balancer is working against.</div>
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<p>See:&nbsp;<a href="#package.description">Description</a></p>
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<th class="colFirst" scope="col">Class</th>
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<td class="colFirst"><a href="../../../../../../../org/apache/hadoop/hdfs/server/diskbalancer/datamodel/DiskBalancerCluster.html" title="class in org.apache.hadoop.hdfs.server.diskbalancer.datamodel">DiskBalancerCluster</a></td>
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<div class="block">DiskBalancerCluster represents the nodes that we are working against.</div>
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<td class="colFirst"><a href="../../../../../../../org/apache/hadoop/hdfs/server/diskbalancer/datamodel/DiskBalancerDataNode.html" title="class in org.apache.hadoop.hdfs.server.diskbalancer.datamodel">DiskBalancerDataNode</a></td>
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<div class="block">DiskBalancerDataNode represents a DataNode that exists in the cluster.</div>
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<td class="colFirst"><a href="../../../../../../../org/apache/hadoop/hdfs/server/diskbalancer/datamodel/DiskBalancerVolume.html" title="class in org.apache.hadoop.hdfs.server.diskbalancer.datamodel">DiskBalancerVolume</a></td>
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<div class="block">DiskBalancerVolume represents a volume in the DataNode.</div>
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<td class="colFirst"><a href="../../../../../../../org/apache/hadoop/hdfs/server/diskbalancer/datamodel/DiskBalancerVolumeSet.html" title="class in org.apache.hadoop.hdfs.server.diskbalancer.datamodel">DiskBalancerVolumeSet</a></td>
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<div class="block">DiskBalancerVolumeSet is a collection of storage devices on the
data node which are of similar StorageType.</div>
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<h2 title="Package org.apache.hadoop.hdfs.server.diskbalancer.datamodel Description">Package org.apache.hadoop.hdfs.server.diskbalancer.datamodel Description</h2>
<div class="block">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.</div>
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