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Posted to common-user@hadoop.apache.org by coneybeare <co...@berkeley.edu> on 2008/05/08 08:56:09 UTC

Newbie InputFormat Question

I want to alter the default <"key", "line"> input format to be <"key", "line
number:" + "line"> so that my mapper can have a reference to the line num. 
It seems like this should be easy by overwriting either inputformat or
inputsplit... but after reading some of the docs, I am still unsure of where
to begin.  Any help is much appreciated.

-Matt
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Re: Newbie InputFormat Question

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

You can have a look at TextInputFormat, KeyValueTextInputFormat etc at
http://svn.apache.org/viewvc/hadoop/core/trunk/src/java/org/apache/hadoop/mapred/ 


coneybeare wrote:
> I want to alter the default <"key", "line"> input format to be <"key", "line
> number:" + "line"> so that my mapper can have a reference to the line num. 
> It seems like this should be easy by overwriting either inputformat or
> inputsplit... but after reading some of the docs, I am still unsure of where
> to begin.  Any help is much appreciated.
>
> -Matt
>