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From Steve Loughran <ste...@apache.org>
Subject Re: Defining Hadoop Compatibility -revisiting-
Date Thu, 12 May 2011 09:33:51 GMT
On 12/05/2011 00:20, Aaron Kimball wrote:
> What does it mean to "implement" those interfaces? I'm +1 for a TCK-based
> definition. In addition to statically implementing a set of interfaces, each
> interface also implicitly includes a set of acceptable inputs and predicted
> outputs (or ranges of outputs) for those inputs.

+1: Parnas's definition of "interface" is signature+semantics. Java 
interface files just define the signature, not behaviour. A test kit is 

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