1 /** 2 * Licensed to the Apache Software Foundation (ASF) under one 3 * or more contributor license agreements. See the NOTICE file 4 * distributed with this work for additional information 5 * regarding copyright ownership. The ASF licenses this file 6 * to you under the Apache License, Version 2.0 (the 7 * "License"); you may not use this file except in compliance 8 * with the License. You may obtain a copy of the License at 9 * 10 * http://www.apache.org/licenses/LICENSE-2.0 11 * 12 * Unless required by applicable law or agreed to in writing, software 13 * distributed under the License is distributed on an "AS IS" BASIS, 14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 15 * See the License for the specific language governing permissions and 16 * limitations under the License. 17 */ 18 19 package org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair; 20 21 import java.io.IOException; 22 import java.util.Arrays; 23 import java.util.List; 24 25 import org.apache.hadoop.security.GroupMappingServiceProvider; 26 27 public class SimpleGroupsMapping implements GroupMappingServiceProvider { 28 29 @Override getGroups(String user)30 public List<String> getGroups(String user) { 31 return Arrays.asList(user + "group", user + "subgroup1", user + "subgroup2"); 32 } 33 34 @Override cacheGroupsRefresh()35 public void cacheGroupsRefresh() throws IOException { 36 throw new UnsupportedOperationException(); 37 } 38 39 @Override cacheGroupsAdd(List<String> groups)40 public void cacheGroupsAdd(List<String> groups) throws IOException { 41 throw new UnsupportedOperationException(); 42 } 43 44 } 45