| /** |
| * 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.crunch.impl.mr.run; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.mapreduce.InputSplit; |
| import org.apache.hadoop.mapreduce.JobContext; |
| import org.apache.hadoop.mapreduce.RecordReader; |
| import org.apache.hadoop.mapreduce.TaskAttemptContext; |
| import org.apache.hadoop.mapreduce.lib.input.CombineFileInputFormat; |
| import org.apache.hadoop.mapreduce.lib.input.FileInputFormat; |
| |
| import java.io.IOException; |
| |
| public class CrunchCombineFileInputFormat<K, V> extends CombineFileInputFormat<K, V> { |
| |
| public CrunchCombineFileInputFormat(JobContext jobContext) { |
| if (getMaxSplitSize(jobContext) == Long.MAX_VALUE) { |
| Configuration conf = jobContext.getConfiguration(); |
| if (conf.get(RuntimeParameters.COMBINE_FILE_BLOCK_SIZE) != null) { |
| setMaxSplitSize(conf.getLong(RuntimeParameters.COMBINE_FILE_BLOCK_SIZE, 0)); |
| } else { |
| setMaxSplitSize(jobContext.getConfiguration().getLongBytes("dfs.blocksize", 134217728L)); |
| } |
| } |
| } |
| |
| @Override |
| public RecordReader createRecordReader(InputSplit inputSplit, TaskAttemptContext taskAttemptContext) throws IOException { |
| throw new UnsupportedOperationException("CrunchCombineFileInputFormat.createRecordReader should never be called"); |
| } |
| } |