Java tutorial
/* * Copyright (c) 2013 Yolodata, LLC, 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. * 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.yolodata.tbana.hadoop.mapred.csv; import org.apache.hadoop.io.LongWritable; import org.apache.hadoop.io.Text; import org.apache.hadoop.mapred.*; import java.io.IOException; import java.util.List; public class CSVTextInputFormat extends FileInputFormat<LongWritable, List<Text>> { @Override public RecordReader<LongWritable, List<Text>> getRecordReader(InputSplit split, JobConf jobConf, Reporter reporter) throws IOException { if (jobConf.get(CSVLineRecordReader.FORMAT_DELIMITER) == null || jobConf.get(CSVLineRecordReader.FORMAT_SEPARATOR) == null) { throw new IOException("CSVTextInputFormat: missing parameter delimiter/separator"); } CSVLineRecordReader reader = new CSVLineRecordReader(); reader.initialize(split, jobConf); return reader; } }