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From Grant Ingersoll <>
Subject Re: Amazon Mahout Public AMI v. Mahout on EMR
Date Tue, 19 May 2009 11:11:06 GMT

On May 19, 2009, at 6:59 AM, Tim Bass wrote:

> Dear All,
> A few months ago (on the developer's list) we briefly touched on the
> idea of building a Mahout public AMI on EC2.
> Subsequently, Amazon released EMR and a number of folks have
> experimented with running sample Mahout jobs on EMR.
> What are the pros and cons of creating a public Mahout AMI with Hadoop
> and MapReduce configured with the versions that
> are supported by the developers, in addition to Amazon's EMR  
> implementation?

AFAICT, one issue seems to be that EMR locks you into a specific  
Hadoop instance.  Not sure if "locks" is too strong, maybe I should  
say it "encourages" you to use a specific version?

As Ted and others pointed out, I think we would benefit from tools  
that make it easy to add Mahout to an AMI.


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