In Hadoop MapReduce, how can i set an Object as the Value for Map output?

0 votes

I want the Value for the Intermediate output to be the following object.


MyObject{
  date:Date
  name:Double
}

How to do this?

Nov 20, 2018 in Big Data Hadoop by slayer
• 29,270 points
65 views

1 answer to this question.

0 votes

Try this and see if it works:

public class MyObj implements WritableComparable<MyObj>{

    private String date;
    private Double name;

    public String getDate() { return date;}
    public Double getName() { return name;}

    @Override
    public void readFields(DataInput in) throws IOException {

        //Define how you want to read the fields
        }
    @Override
    public void writeFields(DataOutput out) throws IOException {

        //Define how you want to write the fields
    }
        .......
        .......
        .......

}
answered Nov 20, 2018 by Omkar
• 69,000 points

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