| /* |
| * 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.datastorage; |
| |
| import java.util.Enumeration; |
| import java.util.Iterator; |
| import java.util.Map; |
| import java.util.Map.Entry; |
| import java.util.Properties; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.pig.ExecType; |
| import org.apache.pig.PigConstants; |
| import org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MRConfiguration; |
| import org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigMapReduce; |
| import org.apache.pig.backend.hadoop.executionengine.util.MapRedUtil; |
| |
| public class ConfigurationUtil { |
| |
| public static Configuration toConfiguration(Properties properties) { |
| return toConfiguration(properties, false); |
| } |
| |
| public static Configuration toConfiguration(Properties properties, boolean loadDefaults) { |
| assert properties != null; |
| final Configuration config = new Configuration(loadDefaults); |
| final Enumeration<Object> iter = properties.keys(); |
| while (iter.hasMoreElements()) { |
| final String key = (String) iter.nextElement(); |
| final String val = properties.getProperty(key); |
| config.set(key, val); |
| } |
| return config; |
| } |
| |
| public static Properties toProperties(Configuration configuration) { |
| Properties properties = new Properties(); |
| assert configuration != null; |
| Iterator<Map.Entry<String, String>> iter = configuration.iterator(); |
| while (iter.hasNext()) { |
| Map.Entry<String, String> entry = iter.next(); |
| properties.put(entry.getKey(), entry.getValue()); |
| } |
| return properties; |
| } |
| |
| /** |
| * @param origConf |
| * @param replaceConf |
| */ |
| public static void mergeConf(Configuration origConf, |
| Configuration replaceConf) { |
| for (Entry<String, String> entry : replaceConf) { |
| origConf.set(entry.getKey(), entry.getValue()); |
| } |
| |
| } |
| |
| public static Properties getLocalFSProperties() { |
| Configuration localConf; |
| if (PigMapReduce.sJobContext!=null && PigMapReduce.sJobContext.getConfiguration().get("exectype").equals(ExecType.LOCAL.toString())) { |
| localConf = new Configuration(false); |
| localConf.addResource("core-default.xml"); |
| } else { |
| if (PigMapReduce.sJobContext!=null) { |
| localConf = new Configuration(PigMapReduce.sJobContext.getConfiguration()); |
| } else { |
| localConf = new Configuration(true); |
| } |
| // It's really hacky, try to get unit test working under hadoop 23. |
| // Hadoop23 MiniMRCluster currently need setup Distributed cache before start, |
| // so build/classes/hadoop-site.xml contains such entry. This prevents some tests from |
| // successful (They expect those files in hdfs), so we need to unset it in hadoop 23. |
| // This should go away once MiniMRCluster fix the distributed cache issue. |
| localConf.unset(MRConfiguration.JOB_CACHE_FILES); |
| } |
| localConf.set(MapRedUtil.FILE_SYSTEM_NAME, "file:///"); |
| Properties props = ConfigurationUtil.toProperties(localConf); |
| return props; |
| } |
| |
| public static void replaceConfigForLocalMode(Configuration configuration) { |
| for (Entry<String, String> entry : configuration) { |
| String key = entry.getKey(); |
| String value = entry.getValue(); |
| if(key.startsWith(PigConstants.PIG_LOCAL_CONF_PREFIX)) { |
| String realConfKey = key.substring(PigConstants.PIG_LOCAL_CONF_PREFIX.length()); |
| configuration.set(realConfKey, value); |
| } |
| } |
| } |
| |
| /** |
| * Returns Properties containing alternative names of given property and same values - can be used to solve deprecations |
| * @return |
| */ |
| public static Properties expandForAlternativeNames(String name, String value){ |
| final Configuration config = new Configuration(false); |
| config.set(name,value); |
| return ConfigurationUtil.toProperties(config); |
| } |
| } |