| /** |
| * 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.tez.mapreduce.common; |
| |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.Objects; |
| |
| import org.apache.hadoop.classification.InterfaceAudience.Private; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.FileSystem; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.fs.FileSystem.Statistics; |
| import org.apache.hadoop.mapred.Counters.Counter; |
| import org.apache.tez.common.counters.TezCounter; |
| import org.apache.tez.mapreduce.hadoop.mapred.MRCounters; |
| |
| @Private |
| public class Utils { |
| |
| /** |
| * Gets a handle to the Statistics instance based on the scheme associated |
| * with path. |
| * |
| * @param path the path. |
| * @param conf the configuration to extract the scheme from if not part of |
| * the path. |
| * @return a Statistics instance, or null if none is found for the scheme. |
| */ |
| @Private |
| public static List<Statistics> getFsStatistics(Path path, Configuration conf) throws IOException { |
| List<Statistics> matchedStats = new ArrayList<FileSystem.Statistics>(); |
| path = path.getFileSystem(conf).makeQualified(path); |
| String scheme = path.toUri().getScheme(); |
| for (Statistics stats : FileSystem.getAllStatistics()) { |
| if (stats.getScheme().equals(scheme)) { |
| matchedStats.add(stats); |
| } |
| } |
| return matchedStats; |
| } |
| |
| public static Counter getMRCounter(TezCounter tezCounter) { |
| Objects.requireNonNull(tezCounter); |
| return new MRCounters.MRCounter(tezCounter); |
| } |
| |
| } |