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Date: Thu, 11 Feb 2010 17:19:38 -0800
Message-ID: <8211a1321002111719h16f04989w7abe02b03fe3b35a@mail.gmail.com>
Subject: Re: Identity Reducer
From: Jeff Zhang <zjffdu@gmail.com>
To: common-user@hadoop.apache.org
Content-Type: multipart/alternative; boundary=00504502af15a641d5047f5d0f16

--00504502af15a641d5047f5d0f16
Content-Type: text/plain; charset=UTF-8

I guess you are using org.apache.hadoop.mapreduce.Mapper which is a class
for hadoop new API. you can use the org.apache.hadoop.mapred.Mapper which is
for old API



On Thu, Feb 11, 2010 at 5:10 PM, Prabhu Hari Dhanapal <
dragonzsnake@gmail.com> wrote:

> Hi all,
>
> I m trying to Write a program that performs some simple Datamining on a
> certain DataSet. I was told that an Identity Reducer should be written.
>
> public class Reduce extends MapReduceBase implements Reducer {
>
> public void reduce(Text key, Iterator<IntWritable>
> values,OutputCollector<Text, IntWritable> output,
>  Reporter reporter) throws IOException {
>
> ===>
> It shows me the following exception  ..
>
> "The type Reducer cannot be a superinterface of Reduce; a superinterface
> must be an interface "
> Can I have some pointers on solving this?
>
>
> --
> Hari
>



-- 
Best Regards

Jeff Zhang

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