BinaryBlockInputFormat.java example

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/**
 * (C) Copyright IBM Corp. 2010, 2015
 *
 * 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.ibm.bi.dml.runtime.util;

import java.io.IOException;

import org.apache.hadoop.mapred.InputSplit;
import org.apache.hadoop.mapred.JobConf;
import org.apache.hadoop.mapred.RecordReader;
import org.apache.hadoop.mapred.Reporter;
import org.apache.hadoop.mapred.SequenceFileInputFormat;
import org.apache.hadoop.mapred.FileSplit;

import com.ibm.bi.dml.runtime.matrix.data.MatrixBlock;
import com.ibm.bi.dml.runtime.matrix.data.MatrixIndexes;

/**
 * Custom binary block input format to return the custom record reader.
 * 
 * NOTE: not used by default.
 */
public class BinaryBlockInputFormat extends SequenceFileInputFormat<MatrixIndexes,MatrixBlock>
{
    @Override
	public RecordReader<MatrixIndexes, MatrixBlock> getRecordReader(InputSplit split, JobConf job, Reporter reporter)
		throws IOException 
	{
		return new BinaryBlockRecordReader(job, (FileSplit)split);
	}
}