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Posted to common-user@hadoop.apache.org by Nataraj Rashmi - rnatar <Ra...@acxiom.com> on 2012/09/12 04:13:26 UTC
How to not output the key
Hello,
I have simple map/reduce program to merge input files into one big output files. My question is, is there a way not to output the key from the reducer to the output file? I only want the value, not the key for each record.
Thanks
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Re: How to not output the key
Posted by Manoj Babu <ma...@gmail.com>.
Hi,
You have to specify the reducer key out type as NullWritable.
Cheers!
Manoj.
On Wed, Sep 12, 2012 at 7:43 AM, Nataraj Rashmi - rnatar <
Rashmi.Nataraj@acxiom.com> wrote:
> Hello,****
>
> ** **
>
> I have simple map/reduce program to merge input files into one big output
> files. My question is, is there a way not to output the key from the
> reducer to the output file? I only want the value, not the key for each
> record.****
>
> ** **
>
> Thanks****
>
> ** **
>
> ***************************************************************************
> The information contained in this communication is confidential, is
> intended only for the use of the recipient named above, and may be legally
> privileged.
>
> If the reader of this message is not the intended recipient, you are
> hereby notified that any dissemination, distribution or copying of this
> communication is strictly prohibited.
>
> If you have received this communication in error, please resend this
> communication to the sender and delete the original message or any copy
> of it from your computer system.
>
> Thank You.
>
> ****************************************************************************
>
Re: How to not output the key
Posted by Manoj Babu <ma...@gmail.com>.
Hi,
You have to specify the reducer key out type as NullWritable.
Cheers!
Manoj.
On Wed, Sep 12, 2012 at 7:43 AM, Nataraj Rashmi - rnatar <
Rashmi.Nataraj@acxiom.com> wrote:
> Hello,****
>
> ** **
>
> I have simple map/reduce program to merge input files into one big output
> files. My question is, is there a way not to output the key from the
> reducer to the output file? I only want the value, not the key for each
> record.****
>
> ** **
>
> Thanks****
>
> ** **
>
> ***************************************************************************
> The information contained in this communication is confidential, is
> intended only for the use of the recipient named above, and may be legally
> privileged.
>
> If the reader of this message is not the intended recipient, you are
> hereby notified that any dissemination, distribution or copying of this
> communication is strictly prohibited.
>
> If you have received this communication in error, please resend this
> communication to the sender and delete the original message or any copy
> of it from your computer system.
>
> Thank You.
>
> ****************************************************************************
>
Re: How to not output the key
Posted by Manoj Babu <ma...@gmail.com>.
Hi,
You have to specify the reducer key out type as NullWritable.
Cheers!
Manoj.
On Wed, Sep 12, 2012 at 7:43 AM, Nataraj Rashmi - rnatar <
Rashmi.Nataraj@acxiom.com> wrote:
> Hello,****
>
> ** **
>
> I have simple map/reduce program to merge input files into one big output
> files. My question is, is there a way not to output the key from the
> reducer to the output file? I only want the value, not the key for each
> record.****
>
> ** **
>
> Thanks****
>
> ** **
>
> ***************************************************************************
> The information contained in this communication is confidential, is
> intended only for the use of the recipient named above, and may be legally
> privileged.
>
> If the reader of this message is not the intended recipient, you are
> hereby notified that any dissemination, distribution or copying of this
> communication is strictly prohibited.
>
> If you have received this communication in error, please resend this
> communication to the sender and delete the original message or any copy
> of it from your computer system.
>
> Thank You.
>
> ****************************************************************************
>
Re: How to not output the key
Posted by Manoj Babu <ma...@gmail.com>.
Hi,
You have to specify the reducer key out type as NullWritable.
Cheers!
Manoj.
On Wed, Sep 12, 2012 at 7:43 AM, Nataraj Rashmi - rnatar <
Rashmi.Nataraj@acxiom.com> wrote:
> Hello,****
>
> ** **
>
> I have simple map/reduce program to merge input files into one big output
> files. My question is, is there a way not to output the key from the
> reducer to the output file? I only want the value, not the key for each
> record.****
>
> ** **
>
> Thanks****
>
> ** **
>
> ***************************************************************************
> The information contained in this communication is confidential, is
> intended only for the use of the recipient named above, and may be legally
> privileged.
>
> If the reader of this message is not the intended recipient, you are
> hereby notified that any dissemination, distribution or copying of this
> communication is strictly prohibited.
>
> If you have received this communication in error, please resend this
> communication to the sender and delete the original message or any copy
> of it from your computer system.
>
> Thank You.
>
> ****************************************************************************
>