Thank you very much for you response :) -Suzanne On Tue, Sep 9, 2008 at 12:13 PM, Owen O'Malley <[EMAIL PROTECTED]> wrote:
> On Mon, Sep 8, 2008 at 4:26 PM, Sandy <[EMAIL PROTECTED]> wrote: > > > In all seriousness though, why is this not possible? Is there something > > about the MapReduce model of parallel computation that I am not > > understanding? Or this more of an arbitrary implementation choice made by > > the Hadoop framework? If so, I am curious why this is the case. What are > > the > > benefits? > > > It is possible to do with changes to Hadoop. There was a jira filed for it, > but I don't think anyone has worked on it. (HADOOP-2573) For Map/Reduce it > is a design goal that number of tasks not nodes are the important metric. > You want a job to be able to run with any given cluster size. For > scalability testing, you could just remove task trackers... > > -- Owen >
