org.apache.hadoop.dynamodb.tools.ImportMapper Maven / Gradle / Ivy
/**
* Copyright 2012-2016 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License"). You may not use this file
* except in compliance with the License. A copy of the License is located at
*
* http://aws.amazon.com/apache2.0/
*
* or in the "LICENSE.TXT" file accompanying this file. This file 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.dynamodb.tools;
import org.apache.hadoop.dynamodb.DynamoDBItemWritable;
import org.apache.hadoop.io.NullWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.mapred.MapReduceBase;
import org.apache.hadoop.mapred.Mapper;
import org.apache.hadoop.mapred.OutputCollector;
import org.apache.hadoop.mapred.Reporter;
import java.io.IOException;
public class ImportMapper extends MapReduceBase implements Mapper {
private static final Text outputKey = new Text();
@Override
public void map(NullWritable key, DynamoDBItemWritable value, OutputCollector output, Reporter reporter) throws IOException {
output.collect(outputKey, value);
reporter.incrCounter(Counters.DYNAMODB_ITEMS_READ_FROM_BACKUP, 1);
}
private enum Counters {
DYNAMODB_ITEMS_READ_FROM_BACKUP,
}
}