| /* |
| * 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.pig.backend.hadoop.executionengine.tez; |
| |
| import static org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.JobControlCompiler.getFromCache; |
| |
| import java.io.IOException; |
| import java.net.URI; |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.Map; |
| import java.util.Set; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.FileStatus; |
| import org.apache.hadoop.fs.FileSystem; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.mapreduce.Job; |
| import org.apache.hadoop.yarn.api.records.LocalResource; |
| import org.apache.hadoop.yarn.api.records.LocalResourceType; |
| import org.apache.hadoop.yarn.api.records.LocalResourceVisibility; |
| import org.apache.hadoop.yarn.util.ConverterUtils; |
| import org.apache.pig.PigConfiguration; |
| import org.apache.pig.impl.PigContext; |
| import org.apache.pig.impl.io.FileLocalizer; |
| |
| import com.google.common.annotations.VisibleForTesting; |
| |
| public class TezResourceManager { |
| private static TezResourceManager instance = null; |
| private boolean inited = false; |
| private Path resourcesDir; |
| private FileSystem remoteFs; |
| private Configuration conf; |
| private PigContext pigContext; |
| public Map<String, Path> resources = new HashMap<String, Path>(); |
| |
| static public TezResourceManager getInstance() { |
| if (instance==null) { |
| instance = new TezResourceManager(); |
| } |
| return instance; |
| } |
| |
| |
| /** |
| * This method is only used by test code to reset state. |
| */ |
| @VisibleForTesting |
| public static void dropInstance() { |
| instance = null; |
| } |
| |
| public void init(PigContext pigContext, Configuration conf) throws IOException { |
| if (!inited) { |
| this.resourcesDir = FileLocalizer.getTemporaryResourcePath(pigContext); |
| this.remoteFs = FileSystem.get(conf); |
| this.conf = conf; |
| this.pigContext = pigContext; |
| this.inited = true; |
| } |
| } |
| |
| public Path getResourcesDir() { |
| return resourcesDir; |
| } |
| |
| // Add files from the source FS as local resources. The resource name will |
| // be the same as the file name. |
| public Path addTezResource(URI uri) throws IOException { |
| synchronized(this) { |
| Path resourcePath = new Path(uri.getPath()); |
| String resourceName = resourcePath.getName(); |
| |
| if (resources.containsKey(resourceName)) { |
| return resources.get(resourceName); |
| } |
| |
| // Ship the local resource to the staging directory on the remote FS |
| if (!pigContext.getExecType().isLocal() && uri.toString().startsWith("file:")) { |
| boolean cacheEnabled = |
| conf.getBoolean(PigConfiguration.PIG_USER_CACHE_ENABLED, false); |
| |
| if(cacheEnabled){ |
| Path pathOnDfs = getFromCache(pigContext, conf, uri.toURL()); |
| if(pathOnDfs != null) { |
| resources.put(resourceName, pathOnDfs); |
| return pathOnDfs; |
| } |
| |
| } |
| |
| Path remoteFsPath = remoteFs.makeQualified(new Path(resourcesDir, resourceName)); |
| remoteFs.copyFromLocalFile(resourcePath, remoteFsPath); |
| remoteFs.setReplication(remoteFsPath, (short)conf.getInt(Job.SUBMIT_REPLICATION, 3)); |
| resources.put(resourceName, remoteFsPath); |
| return remoteFsPath; |
| } |
| resources.put(resourceName, resourcePath); |
| return resourcePath; |
| } |
| } |
| |
| // Add files already present in the remote FS as local resources. Allow the |
| // resource name to be different from the file name to to support resource |
| // aliasing in a CACHE statement (and to allow the same file to be aliased |
| // with multiple resource names). |
| public void addTezResource(String resourceName, Path remoteFsPath) throws IOException { |
| if (!resources.containsKey(resourceName)) { |
| resources.put(resourceName, remoteFsPath); |
| } |
| } |
| |
| public Map<String, LocalResource> addTezResources(Set<URI> resources) throws Exception { |
| Set<String> resourceNames = new HashSet<String>(); |
| for (URI uri : resources) { |
| addTezResource(uri); |
| resourceNames.add(new Path(uri.getPath()).getName()); |
| } |
| return getTezResources(resourceNames); |
| } |
| |
| public Map<String, LocalResource> getTezResources(Set<String> resourceNames) throws Exception { |
| Map<String, LocalResource> tezResources = new HashMap<String, LocalResource>(); |
| for (String resourceName : resourceNames) { |
| // The resource name will be symlinked to the resource path in the |
| // container's working directory. |
| Path resourcePath = resources.get(resourceName); |
| FileSystem fileSystem = resourcePath.getFileSystem(conf); |
| FileStatus fstat = fileSystem.getFileStatus(resourcePath); |
| |
| LocalResource tezResource = LocalResource.newInstance( |
| ConverterUtils.getYarnUrlFromPath(fstat.getPath()), |
| LocalResourceType.FILE, |
| LocalResourceVisibility.APPLICATION, |
| fstat.getLen(), |
| fstat.getModificationTime()); |
| |
| tezResources.put(resourceName, tezResource); |
| } |
| return tezResources; |
| } |
| } |
| |