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From "Albert Chern" <albert.ch...@gmail.com>
Subject Re: Chaining MapReduce operations
Date Wed, 25 Oct 2006 20:47:25 GMT
There is something similar in
src/examples/org/apache/hadoop/examples/Grep.java.  Instead of
outputting pure word counts, it counts occurrences of a regex.  Switch
the first map reduce job with the one in WordCount.java in the same
directory and you're golden.

On 10/25/06, David Pollak <dpp@athena.com> wrote:
> Howdy,
>
> Can anyone point me to an example of chaining MapReduce operations
> (e.g., Word Count followed by inverting the "Word" and "Count"
> columns so one wound up with the list sorted by count rather than by
> word)?
>
> Thanks,
>
> David
>
>
>

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