org.apache.hadoop.mapred.MapReduceBase Maven / Gradle / Ivy
/**
* 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.io.Closeable;
import org.apache.hadoop.mapred.JobConfigurable;
/**
* Base class for {@link Mapper} and {@link Reducer} implementations.
*
* Provides default no-op implementations for a few methods, most non-trivial
* applications need to override some of them.
*/
@Deprecated
public class MapReduceBase implements Closeable, JobConfigurable {
/** Default implementation that does nothing. */
public void close() throws IOException {
}
/** Default implementation that does nothing. */
public void configure(JobConf job) {
}
}