com.marklogic.mapreduce.KeyValueInputFormat Maven / Gradle / Ivy
/*
* Copyright (c) 2019 MarkLogic Corporation
*
* 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 com.marklogic.mapreduce;
import java.io.IOException;
import org.apache.hadoop.mapreduce.InputSplit;
import org.apache.hadoop.mapreduce.RecordReader;
import org.apache.hadoop.mapreduce.TaskAttemptContext;
/**
* MarkLogicInputFormat for user specified key and value types.
*
*
* Your job may gather input data from a MarkLogic database
* and produce key-value pairs with type such as {@link org.apache.hadoop.io.Text}
* and {@link org.apache.hadoop.io.IntWritable} through implicit conversions
* performed by the connector. For details on the supported conversions, see
* "Using KeyValueInputFormat and ValueInputFormat" in the
* Hadoop MapReduce Connector Developer's Guide.
*
*
* @see com.marklogic.mapreduce.examples.LinkCount
* @author jchen
*
* @param
* @param
*/
public class KeyValueInputFormat
extends MarkLogicInputFormat
implements MarkLogicConstants {
@Override
public RecordReader createRecordReader(InputSplit split,
TaskAttemptContext context)
throws IOException, InterruptedException {
return new KeyValueReader(context.getConfiguration());
}
}