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Posted to mapreduce-user@hadoop.apache.org by Wantao <li...@qq.com> on 2011/03/31 03:43:57 UTC

Mapper and Reducer of Terasort example

Hi all,

I did not find where Mapper and Reducer are set in source code of the Terasort example in Hadoop 0.21.0. So I guess default Mapper and Reducer are used. If so, what are the classes names for them?

Thanks for any advice.

Wantao

Re: mailing list removal?

Posted by David Heneghan <da...@feedback.ie>.

thanks
  ----- Original Message ----- 
  From: John Therrell 
  To: mapreduce-user@hadoop.apache.org 
  Cc: David Heneghan 
  Sent: Friday, April 01, 2011 12:59 AM
  Subject: Re: mailing list removal?


  mail to mapreduce-user-unsubscribe@hadoop.apache.org to unsubscribe.


  On Thu, Mar 31, 2011 at 6:55 AM, David Heneghan <da...@feedback.ie> wrote:

    hi, i inadvertently got onto this list and it's not all that relevant for me, can anyone suggest how i get off it?

    Many thanks
      ----- Original Message ----- 
      From: Amareshwari Sri Ramadasu 
      To: mapreduce-user@hadoop.apache.org 
      Sent: Thursday, March 31, 2011 9:13 AM
      Subject: Re: Mapper and Reducer of Terasort example


      The classes are org.apache.hadoop.mapreduce.Mapper and org.apache.hadoop.mapreduce.Reducer.

      Thanks
      Amareshwari

      On 3/31/11 7:13 AM, "Wantao" <li...@qq.com> wrote:


        Hi all,

        I did not find where Mapper and Reducer are set in source code of the Terasort example in Hadoop 0.21.0. So I guess default Mapper and Reducer are used. If so, what are the classes names for them?

        Thanks for any advice.

        Wantao

Re: mailing list removal?

Posted by John Therrell <jt...@gmail.com>.

mail to mapreduce-user-unsubscribe@hadoop.apache.org to unsubscribe.

On Thu, Mar 31, 2011 at 6:55 AM, David Heneghan <da...@feedback.ie> wrote:

>  hi, i inadvertently got onto this list and it's not all that relevant for
> me, can anyone suggest how i get off it?
>
> Many thanks
>
> ----- Original Message -----
> *From:* Amareshwari Sri Ramadasu <am...@yahoo-inc.com>
> *To:* mapreduce-user@hadoop.apache.org
> *Sent:* Thursday, March 31, 2011 9:13 AM
> *Subject:* Re: Mapper and Reducer of Terasort example
>
> The classes are org.apache.hadoop.mapreduce.Mapper and
> org.apache.hadoop.mapreduce.Reducer.
>
> Thanks
> Amareshwari
>
> On 3/31/11 7:13 AM, "Wantao" <li...@qq.com> wrote:
>
> Hi all,
>
> I did not find where Mapper and Reducer are set in source code of the
> Terasort example in Hadoop 0.21.0. So I guess default Mapper and Reducer are
> used. If so, what are the classes names for them?
>
> Thanks for any advice.
>
> Wantao
>
>

mailing list removal?

Posted by David Heneghan <da...@feedback.ie>.

Re: Mapper and Reducer of Terasort examplehi, i inadvertently got onto this list and it's not all that relevant for me, can anyone suggest how i get off it?

Many thanks
  ----- Original Message ----- 
  From: Amareshwari Sri Ramadasu 
  To: mapreduce-user@hadoop.apache.org 
  Sent: Thursday, March 31, 2011 9:13 AM
  Subject: Re: Mapper and Reducer of Terasort example

  The classes are org.apache.hadoop.mapreduce.Mapper and org.apache.hadoop.mapreduce.Reducer.

  Thanks
  Amareshwari

  On 3/31/11 7:13 AM, "Wantao" <li...@qq.com> wrote:

    Hi all,

    I did not find where Mapper and Reducer are set in source code of the Terasort example in Hadoop 0.21.0. So I guess default Mapper and Reducer are used. If so, what are the classes names for them?

    Thanks for any advice.

    Wantao

Re: Mapper and Reducer of Terasort example

Posted by Amareshwari Sri Ramadasu <am...@yahoo-inc.com>.

The classes are org.apache.hadoop.mapreduce.Mapper and org.apache.hadoop.mapreduce.Reducer.

Thanks
Amareshwari

On 3/31/11 7:13 AM, "Wantao" <li...@qq.com> wrote:

Hi all,

I did not find where Mapper and Reducer are set in source code of the Terasort example in Hadoop 0.21.0. So I guess default Mapper and Reducer are used. If so, what are the classes names for them?

Thanks for any advice.

Wantao