| /* |
| * 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 |
| * |
| * https://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.avro.mapred; |
| |
| import java.io.IOException; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.apache.hadoop.io.NullWritable; |
| import org.apache.hadoop.fs.FileStatus; |
| import org.apache.hadoop.mapred.JobConf; |
| import org.apache.hadoop.mapred.FileInputFormat; |
| import org.apache.hadoop.mapred.InputSplit; |
| import org.apache.hadoop.mapred.FileSplit; |
| import org.apache.hadoop.mapred.Reporter; |
| import org.apache.hadoop.mapred.RecordReader; |
| |
| /** |
| * An {@link org.apache.hadoop.mapred.InputFormat} for Avro data files. |
| * |
| * By default, when pointed at a directory, this will silently skip over any |
| * files in it that do not have .avro extension. To instead include all files, |
| * set the avro.mapred.ignore.inputs.without.extension property to false. |
| */ |
| public class AvroInputFormat<T> extends FileInputFormat<AvroWrapper<T>, NullWritable> { |
| |
| /** Whether to silently ignore input files without the .avro extension */ |
| public static final String IGNORE_FILES_WITHOUT_EXTENSION_KEY = "avro.mapred.ignore.inputs.without.extension"; |
| |
| /** |
| * Default of whether to silently ignore input files without the .avro |
| * extension. |
| */ |
| public static final boolean IGNORE_INPUTS_WITHOUT_EXTENSION_DEFAULT = true; |
| |
| @Override |
| protected FileStatus[] listStatus(JobConf job) throws IOException { |
| FileStatus[] status = super.listStatus(job); |
| if (job.getBoolean(IGNORE_FILES_WITHOUT_EXTENSION_KEY, IGNORE_INPUTS_WITHOUT_EXTENSION_DEFAULT)) { |
| List<FileStatus> result = new ArrayList<>(status.length); |
| for (FileStatus file : status) |
| if (file.getPath().getName().endsWith(AvroOutputFormat.EXT)) |
| result.add(file); |
| status = result.toArray(new FileStatus[0]); |
| } |
| return status; |
| } |
| |
| @Override |
| public RecordReader<AvroWrapper<T>, NullWritable> getRecordReader(InputSplit split, JobConf job, Reporter reporter) |
| throws IOException { |
| reporter.setStatus(split.toString()); |
| return new AvroRecordReader<>(job, (FileSplit) split); |
| } |
| |
| } |