read csv file format in hadoop using java code

Question

How to read CSV file formats in Hadoop using Java code in eclipse IDE?

I have very large file in CSV format and i want to access the CSV file in HDFS in order to perform map reduce program. kindly anyone help me in solving the problem.

I want Java code to access the file .

thanks in advance.

YoungHobbit · Accepted Answer · 2015-08-13 05:05:52Z

1

You can pass the file as input to the mapper. The lines of the file will become value to the mapper.

class FileMapper extends Mapper<LongWritable, Text> {
    @Override
    public void map(LongWritable key, Text value, Context context) {
    // process your CSV records here.
    }
}

answered Aug 13, 2015 at 5:05

YoungHobbit

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YoungHobbit · Accepted Answer · 2015-08-13 08:10:44Z

0

Create you own CSVInputFormat CSVInputFormat

edited Aug 13, 2015 at 8:10

YoungHobbit

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answered Aug 13, 2015 at 5:42

Kishore

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