org.apache.hadoop.hdfs.server.diskbalancer.datamodel.package-info Maven / Gradle / Ivy
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* 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.
*/
package org.apache.hadoop.hdfs.server.diskbalancer.datamodel;