| /** |
| * 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.hadoop.mapred; |
| |
| import java.io.IOException; |
| |
| import org.apache.hadoop.fs.FileSystem; |
| |
| /** |
| * <code>RecordWriter</code> writes the output <key, value> pairs |
| * to an output file. |
| |
| * <p><code>RecordWriter</code> implementations write the job outputs to the |
| * {@link FileSystem}. |
| * |
| * @see OutputFormat |
| */ |
| public interface RecordWriter<K, V> { |
| /** |
| * Writes a key/value pair. |
| * |
| * @param key the key to write. |
| * @param value the value to write. |
| * @throws IOException |
| */ |
| void write(K key, V value) throws IOException; |
| |
| /** |
| * Close this <code>RecordWriter</code> to future operations. |
| * |
| * @param reporter facility to report progress. |
| * @throws IOException |
| */ |
| void close(Reporter reporter) throws IOException; |
| } |