/*
 * Copyright [2013-2014] PayPal Software Foundation
 *  
 * Licensed 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 ml.shifu.guagua.mapreduce;

import java.io.IOException;

import org.apache.hadoop.mapreduce.JobContext;
import org.apache.hadoop.mapreduce.OutputCommitter;
import org.apache.hadoop.mapreduce.TaskAttemptContext;

/**
 * This output committer doesn't do anything, meant for the case where output isn't desired, or as a base for not using
 * FileOutputCommitter.
 */
public class GuaguaOutputCommitter extends OutputCommitter {

    @Override
    public void abortTask(TaskAttemptContext context) throws IOException {
    }

    @Override
    public void commitTask(TaskAttemptContext context) throws IOException {
    }

    @Override
    public boolean needsTaskCommit(TaskAttemptContext context) throws IOException {
        return false;
    }

    @Override
    public void setupJob(JobContext context) throws IOException {
    }

    @Override
    public void setupTask(TaskAttemptContext context) throws IOException {
    }

    // For these two functions, @Override is removed to make it compatible with hadoop 0.20.*, 1.x, 2.2.x

    public void commitJob(JobContext jobContext) throws IOException {
    }

    public void cleanupJob(JobContext jobContext) throws IOException {
    }
}