| /** |
| * 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. |
| */ |
| |
| package org.apache.hadoop.yarn.api.records; |
| |
| import org.apache.hadoop.classification.InterfaceAudience.Private; |
| import org.apache.hadoop.classification.InterfaceAudience.Public; |
| import org.apache.hadoop.classification.InterfaceStability.Stable; |
| import org.apache.hadoop.classification.InterfaceStability.Unstable; |
| |
| /** |
| * <p><code>YarnClusterMetrics</code> represents cluster metrics.</p> |
| * |
| * <p>Currently only number of <code>NodeManager</code>s is provided.</p> |
| */ |
| @Public |
| @Stable |
| public interface YarnClusterMetrics { |
| |
| /** |
| * Get the number of <code>NodeManager</code>s in the cluster. |
| * @return number of <code>NodeManager</code>s in the cluster |
| */ |
| @Public |
| @Stable |
| public abstract int getNumNodeManagers(); |
| |
| @Private |
| @Unstable |
| public abstract void setNumNodeManagers(int numNodeManagers); |
| |
| } |
