cascading.flow.MapReduceFlowStep.java Source code

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Here is the source code for cascading.flow.MapReduceFlowStep.java

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/*
 * Copyright (c) 2007-2010 Concurrent, Inc. All Rights Reserved.
 *
 * Project and contact information: http://www.cascading.org/
 *
 * This file is part of the Cascading project.
 *
 * Cascading is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Cascading is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Cascading.  If not, see <http://www.gnu.org/licenses/>.
 */

package cascading.flow;

import java.io.IOException;

import cascading.tap.Tap;
import org.apache.hadoop.mapred.JobConf;

/** Class MapReduceFlowStep wraps a {@link JobConf} and allows it to be executed as a {@link Flow}. */
public class MapReduceFlowStep extends FlowStep {
    /** Field jobConf */
    private final JobConf jobConf;

    MapReduceFlowStep(String name, JobConf jobConf, Tap sink) {
        super(name, 1);
        this.jobConf = jobConf;
        this.sink = sink;
    }

    @Override
    protected JobConf getJobConf(JobConf parentConf) throws IOException {
        // allow to delete
        sink.sinkInit(new JobConf());

        return jobConf;
    }
}