content: /*
   * 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.trevni.avro.mapreduce;
  
  import java.io.IOException;
  
  import org.apache.avro.mapred.AvroKey;
  import org.apache.avro.mapred.AvroValue;
  import org.apache.hadoop.mapreduce.InputSplit;
  import org.apache.hadoop.mapreduce.RecordReader;
  import org.apache.hadoop.mapreduce.TaskAttemptContext;
  import org.apache.hadoop.mapreduce.lib.input.FileInputFormat;
  
  /**
   * An {@link org.apache.hadoop.mapreduce.InputFormat} for Trevni files.
   *
   * This implement was modeled off
   * {@link org.apache.avro.mapreduce.AvroKeyValueInputFormat} to allow for easy
   * transition
   *
   * <p>
   * A MapReduce InputFormat that reads from Trevni container files of key/value
   * generic records.
   *
   * <p>
   * Trevni container files that container generic records with the two fields
   * 'key' and 'value' are expected. The contents of the 'key' field will be used
   * as the job input key, and the contents of the 'value' field will be used as
   * the job output value.
   * </p>
   *
   * @param <K> The type of the Trevni key to read.
   * @param <V> The type of the Trevni value to read.
   *
   *            <p>
   *            A subset schema to be read may be specified with
   *            {@link org.apache.avro.mapreduce.AvroJob#setInputKeySchema} and
   *            {@link org.apache.avro.mapreduce.AvroJob#setInputValueSchema}.
   */
  public class AvroTrevniKeyValueInputFormat<K, V> extends FileInputFormat<AvroKey<K>, AvroValue<V>> {
  
    /** {@inheritDoc} */
    @Override
    public RecordReader<AvroKey<K>, AvroValue<V>> createRecordReader(InputSplit split, TaskAttemptContext context)
        throws IOException, InterruptedException {
  
      return new AvroTrevniKeyValueRecordReader<>();
    }
  
  }
  