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Date: Wed, 26 Mar 2014 11:05:52 -0700
From: Josh Elser <josh.elser@gmail.com>
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Subject: Re: [DISCUSS] MiniAccumuloCluster goals and approach
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On 3/26/14, 10:57 AM, Keith Turner wrote:
> Can you give an example of what you are thinking of? I don't understand you
> viewpoint either

Sure. One limitation of MAC, in general as a testing harness, is that it 
doesn't adequately exercise multi-node implementations. You can run 
multiple tservers, but they are all on the same host which limits the 
validity of a "robust" test. This is my immediate goal.

Multi-node deployments are capable using something like Mesos or Yarn. 
Given that there is already functioning support to deploy Accumulo on 
Yarn, this was my goal.

My goal is to be able to have the ability to run all of our 
AbstractMacIT implementations against "real" hardware without changing a 
single line of test code (ok - maybe a line or two to do injection of 
the MAC implementation). The point is, I believe there could be a huge 
testing gain from being able to write tests which leverage yarn, have 
the same programmatic configuration API from MAC, and provide near 
"real" Accumulo semantics.