| /** |
| * 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.nodelabels; |
| |
| import java.io.Closeable; |
| import java.io.IOException; |
| import java.util.Collection; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.yarn.api.records.NodeId; |
| import org.apache.hadoop.yarn.api.records.NodeLabel; |
| import org.apache.hadoop.yarn.exceptions.YarnException; |
| |
| public abstract class NodeLabelsStore implements Closeable { |
| protected CommonNodeLabelsManager mgr; |
| |
| /** |
| * Store node {@literal ->} label |
| */ |
| public abstract void updateNodeToLabelsMappings( |
| Map<NodeId, Set<String>> nodeToLabels) throws IOException; |
| |
| /** |
| * Store new labels |
| */ |
| public abstract void storeNewClusterNodeLabels(List<NodeLabel> label) |
| throws IOException; |
| |
| /** |
| * Remove labels |
| */ |
| public abstract void removeClusterNodeLabels(Collection<String> labels) |
| throws IOException; |
| |
| /** |
| * Recover labels and node to labels mappings from store, but if |
| * ignoreNodeToLabelsMappings is true then node to labels mappings should not |
| * be recovered. In case of Distributed NodeLabels setup |
| * ignoreNodeToLabelsMappings will be set to true and recover will be invoked |
| * as RM will collect the node labels from NM through registration/HB |
| * |
| * @throws IOException |
| * @throws YarnException |
| */ |
| public abstract void recover() throws IOException, YarnException; |
| |
| public void init(Configuration conf) throws Exception {} |
| |
| public void setNodeLabelsManager(CommonNodeLabelsManager mgr) { |
| this.mgr = mgr; |
| } |
| } |