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From Ted Dunning <tdunn...@veoh.com>
Subject Re: joins in map reduce
Date Wed, 21 May 2008 19:01:05 GMT

Nobody answered your second question.  Sorry about that.

There is no single best way to do the join.  Map-side joins can be much
faster, if only because an entire map-reduce step can be avoided.  They may
also be impossible.

On 5/21/08 11:16 AM, "Shirley Cohen" <shirleyc@cis.upenn.edu> wrote:

> How does one do a join operation ...? Which way works better and why?

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