| /** |
| * 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 org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.security.UserGroupInformation; |
| import org.apache.hadoop.yarn.api.records.NodeId; |
| import org.apache.hadoop.yarn.api.records.NodeLabel; |
| import org.apache.hadoop.yarn.conf.YarnConfiguration; |
| import org.apache.hadoop.yarn.exceptions.YarnException; |
| import org.apache.hadoop.yarn.nodelabels.store.AbstractFSNodeStore; |
| |
| import org.apache.hadoop.yarn.nodelabels.store.op.AddClusterLabelOp; |
| import org.apache.hadoop.yarn.nodelabels.store.FSStoreOpHandler.StoreType; |
| import org.apache.hadoop.yarn.nodelabels.store.op.NodeToLabelOp; |
| import org.apache.hadoop.yarn.nodelabels.store.op.RemoveClusterLabelOp; |
| |
| import java.io.IOException; |
| import java.util.Collection; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| |
| /** |
| * FileSystemNodeLabelsStore for storing node labels. |
| */ |
| public class FileSystemNodeLabelsStore |
| extends AbstractFSNodeStore<CommonNodeLabelsManager> |
| implements NodeLabelsStore { |
| protected static final Log LOG = |
| LogFactory.getLog(FileSystemNodeLabelsStore.class); |
| |
| protected static final String DEFAULT_DIR_NAME = "node-labels"; |
| protected static final String MIRROR_FILENAME = "nodelabel.mirror"; |
| protected static final String EDITLOG_FILENAME = "nodelabel.editlog"; |
| |
| FileSystemNodeLabelsStore() { |
| super(StoreType.NODE_LABEL_STORE); |
| } |
| |
| private String getDefaultFSNodeLabelsRootDir() throws IOException { |
| // default is in local: /tmp/hadoop-yarn-${user}/node-labels/ |
| return "file:///tmp/hadoop-yarn-" + UserGroupInformation.getCurrentUser() |
| .getShortUserName() + "/" + DEFAULT_DIR_NAME; |
| } |
| |
| @Override |
| public void init(Configuration conf, CommonNodeLabelsManager mgr) |
| throws Exception { |
| StoreSchema schema = new StoreSchema(EDITLOG_FILENAME, MIRROR_FILENAME); |
| initStore(conf, new Path( |
| conf.get(YarnConfiguration.FS_NODE_LABELS_STORE_ROOT_DIR, |
| getDefaultFSNodeLabelsRootDir())), schema, mgr); |
| } |
| |
| @Override |
| public void close() throws IOException { |
| super.closeFSStore(); |
| } |
| |
| @Override |
| public void updateNodeToLabelsMappings(Map<NodeId, Set<String>> nodeToLabels) |
| throws IOException { |
| NodeToLabelOp op = new NodeToLabelOp(); |
| writeToLog(op.setNodeToLabels(nodeToLabels)); |
| } |
| |
| @Override |
| public void storeNewClusterNodeLabels(List<NodeLabel> labels) |
| throws IOException { |
| AddClusterLabelOp op = new AddClusterLabelOp(); |
| writeToLog(op.setLabels(labels)); |
| } |
| |
| @Override |
| public void removeClusterNodeLabels(Collection<String> labels) |
| throws IOException { |
| RemoveClusterLabelOp op = new RemoveClusterLabelOp(); |
| writeToLog(op.setLabels(labels)); |
| } |
| |
| /* (non-Javadoc) |
| * @see org.apache.hadoop.yarn.nodelabels.NodeLabelsStore#recover(boolean) |
| */ |
| @Override |
| public void recover() throws YarnException, IOException { |
| super.recoverFromStore(); |
| } |
| } |