| /** |
| * 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.runtime.library.common; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.io.RawComparator; |
| import org.apache.hadoop.io.WritableComparable; |
| import org.apache.hadoop.io.WritableComparator; |
| import org.apache.hadoop.io.compress.CompressionCodec; |
| import org.apache.hadoop.io.compress.DefaultCodec; |
| import org.apache.hadoop.util.ReflectionUtils; |
| import org.apache.tez.common.TezJobConfig; |
| |
| @SuppressWarnings({"unchecked", "rawtypes"}) |
| public class ConfigUtils { |
| |
| public static Class<? extends CompressionCodec> getIntermediateOutputCompressorClass( |
| Configuration conf, Class<DefaultCodec> defaultValue) { |
| Class<? extends CompressionCodec> codecClass = defaultValue; |
| String name = conf |
| .get(TezJobConfig.TEZ_RUNTIME_INTERMEDIATE_OUTPUT_COMPRESS_CODEC); |
| if (name != null) { |
| try { |
| codecClass = conf.getClassByName(name).asSubclass( |
| CompressionCodec.class); |
| } catch (ClassNotFoundException e) { |
| throw new IllegalArgumentException("Compression codec " + name |
| + " was not found.", e); |
| } |
| } |
| return codecClass; |
| } |
| |
| public static Class<? extends CompressionCodec> getIntermediateInputCompressorClass( |
| Configuration conf, Class<DefaultCodec> defaultValue) { |
| Class<? extends CompressionCodec> codecClass = defaultValue; |
| String name = conf |
| .get(TezJobConfig.TEZ_RUNTIME_INTERMEDIATE_INPUT_COMPRESS_CODEC); |
| if (name != null) { |
| try { |
| codecClass = conf.getClassByName(name).asSubclass( |
| CompressionCodec.class); |
| } catch (ClassNotFoundException e) { |
| throw new IllegalArgumentException("Compression codec " + name |
| + " was not found.", e); |
| } |
| } |
| return codecClass; |
| } |
| |
| |
| // TODO Move defaults over to a constants file. |
| |
| public static boolean shouldCompressIntermediateOutput(Configuration conf) { |
| return conf.getBoolean( |
| TezJobConfig.TEZ_RUNTIME_INTERMEDIATE_OUTPUT_SHOULD_COMPRESS, false); |
| } |
| |
| public static boolean isIntermediateInputCompressed(Configuration conf) { |
| return conf.getBoolean( |
| TezJobConfig.TEZ_RUNTIME_INTERMEDIATE_INPUT_IS_COMPRESSED, false); |
| } |
| |
| public static <V> Class<V> getIntermediateOutputValueClass(Configuration conf) { |
| Class<V> retv = (Class<V>) conf.getClass( |
| TezJobConfig.TEZ_RUNTIME_INTERMEDIATE_OUTPUT_VALUE_CLASS, null, |
| Object.class); |
| return retv; |
| } |
| |
| public static <V> Class<V> getIntermediateInputValueClass(Configuration conf) { |
| Class<V> retv = (Class<V>) conf.getClass( |
| TezJobConfig.TEZ_RUNTIME_INTERMEDIATE_INPUT_VALUE_CLASS, null, |
| Object.class); |
| return retv; |
| } |
| |
| public static <K> Class<K> getIntermediateOutputKeyClass(Configuration conf) { |
| Class<K> retv = (Class<K>) conf.getClass( |
| TezJobConfig.TEZ_RUNTIME_INTERMEDIATE_OUTPUT_KEY_CLASS, null, |
| Object.class); |
| return retv; |
| } |
| |
| public static <K> Class<K> getIntermediateInputKeyClass(Configuration conf) { |
| Class<K> retv = (Class<K>) conf.getClass( |
| TezJobConfig.TEZ_RUNTIME_INTERMEDIATE_INPUT_KEY_CLASS, null, |
| Object.class); |
| return retv; |
| } |
| |
| public static <K> RawComparator<K> getIntermediateOutputKeyComparator(Configuration conf) { |
| Class<? extends RawComparator> theClass = conf.getClass( |
| TezJobConfig.TEZ_RUNTIME_INTERMEDIATE_OUTPUT_KEY_COMPARATOR_CLASS, null, |
| RawComparator.class); |
| if (theClass != null) |
| return ReflectionUtils.newInstance(theClass, conf); |
| return WritableComparator.get(getIntermediateOutputKeyClass(conf).asSubclass( |
| WritableComparable.class)); |
| } |
| |
| public static <K> RawComparator<K> getIntermediateInputKeyComparator(Configuration conf) { |
| Class<? extends RawComparator> theClass = conf.getClass( |
| TezJobConfig.TEZ_RUNTIME_INTERMEDIATE_INPUT_KEY_COMPARATOR_CLASS, null, |
| RawComparator.class); |
| if (theClass != null) |
| return ReflectionUtils.newInstance(theClass, conf); |
| return WritableComparator.get(getIntermediateInputKeyClass(conf).asSubclass( |
| WritableComparable.class)); |
| } |
| |
| |
| |
| // TODO Fix name |
| public static <V> RawComparator<V> getInputKeySecondaryGroupingComparator( |
| Configuration conf) { |
| Class<? extends RawComparator> theClass = conf |
| .getClass( |
| TezJobConfig.TEZ_RUNTIME_INTERMEDIATE_INPUT_KEY_SECONDARY_COMPARATOR_CLASS, |
| null, RawComparator.class); |
| if (theClass == null) { |
| return getIntermediateInputKeyComparator(conf); |
| } |
| |
| return ReflectionUtils.newInstance(theClass, conf); |
| } |
| |
| public static boolean useNewApi(Configuration conf) { |
| return conf.getBoolean("mapred.mapper.new-api", false); |
| } |
| |
| } |