Github user ChristianSchulte commented on the pull request:

    https://github.com/apache/maven/pull/32#issuecomment-67621081
  
    I would need a way to disable workspace resolution mainly for the `site` 
lifecycle.
    
        cmd> svn checkout .../tags/maven-3.0
        cmd> cd maven-3.0
        cmd> mvn site
    
    This feeds intermediate build results to the various reports thrown away 
right after site generation whereas
    
        cmd> mvn --legacy-reactor-resolution site
    
    makes Maven 3 download the artifacts from `central` or fail, if not finding 
them. 
    
    Feeding the released artifacts to the various reports is the expected 
behaviour in my opinion as the reports are now generated using the same 
released artifacts instead of some intermediate build result. The `site` 
lifecycle does not produce any artifacts. It consumes pre-built artifacts and 
should really fail, if those artifacts cannot be found. Maven 2 did the right 
thing here, in my opinion. I would always execute `mvn  
--legacy-reactor-resolution site` with this option available.


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