| /** |
| * 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 org.apache.hadoop.classification.InterfaceAudience; |
| import org.apache.hadoop.classification.InterfaceStability; |
| import org.apache.hadoop.yarn.api.records.ApplicationSubmissionContext; |
| import org.apache.hadoop.yarn.server.resourcemanager.scheduler.ResourceScheduler; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.io.IOException; |
| |
| /** |
| * Rejects all placements. |
| */ |
| @InterfaceAudience.Private |
| @InterfaceStability.Unstable |
| public class RejectPlacementRule extends FSPlacementRule { |
| private static final Logger LOG = |
| LoggerFactory.getLogger(RejectPlacementRule.class); |
| |
| /** |
| * The Reject rule does not use any configuration. Override and ignore all |
| * configuration. |
| * @param initArg the config to be set |
| */ |
| @Override |
| public void setConfig(Object initArg) { |
| // This rule ignores all config, just log and return |
| LOG.debug("RejectPlacementRule instantiated"); |
| } |
| |
| @Override |
| public boolean initialize(ResourceScheduler scheduler) throws IOException { |
| super.initialize(scheduler); |
| if (getParentRule() != null) { |
| throw new IOException( |
| "Parent rule should not be configured for Reject rule."); |
| } |
| return true; |
| } |
| |
| @Override |
| public ApplicationPlacementContext getPlacementForApp( |
| ApplicationSubmissionContext asc, String user) { |
| return null; |
| } |
| } |