IdentityReducer.java

/*
 * 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.chukwa.extraction.demux.processor.reducer;


import java.io.IOException;
import java.util.Iterator;
import org.apache.hadoop.chukwa.extraction.engine.ChukwaRecord;
import org.apache.hadoop.chukwa.extraction.engine.ChukwaRecordKey;
import org.apache.hadoop.mapred.OutputCollector;
import org.apache.hadoop.mapred.Reporter;

public class IdentityReducer implements ReduceProcessor {

  @Override
  public String getDataType() {
    // TODO Auto-generated method stub
    return null;
  }

  @Override
  public void process(ChukwaRecordKey key, Iterator<ChukwaRecord> values,
      OutputCollector<ChukwaRecordKey, ChukwaRecord> output, Reporter reporter) {
    while (values.hasNext()) {
      try {
        output.collect(key, values.next());
      } catch (IOException e) {
        e.printStackTrace();
      }
    }
  }

}