| /** |
| * 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.server.resourcemanager.placement; |
| |
| import java.util.Map; |
| |
| import org.apache.hadoop.yarn.api.records.ApplicationSubmissionContext; |
| import org.apache.hadoop.yarn.exceptions.YarnException; |
| import org.apache.hadoop.yarn.server.resourcemanager.RMContext; |
| |
| public abstract class PlacementRule { |
| public String getName() { |
| return this.getClass().getName(); |
| } |
| |
| public void initialize(Map<String, String> parameters, RMContext rmContext) |
| throws YarnException { |
| } |
| |
| /** |
| * Get queue for a given application |
| * |
| * @param asc application submission context |
| * @param user userName |
| * |
| * @throws YarnException |
| * if any error happens |
| * |
| * @return <p> |
| * non-null value means it is determined |
| * </p> |
| * <p> |
| * null value means it is undetermined, so next {@link PlacementRule} |
| * in the {@link PlacementManager} will take care |
| * </p> |
| */ |
| public abstract String getQueueForApp(ApplicationSubmissionContext asc, |
| String user) throws YarnException; |
| } |