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https://jira.codehaus.org/browse/MNG-4633?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=339939#comment-339939
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Jason van Zyl commented on MNG-4633:
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Kristian, feel free to reopen if you're going to work on it. But after looking 
at these modes as well I only think this mode would reward poorly modularized 
builds. The only time this might help is if you have a critical path where you 
just can't go any further, but you really can't do a whole lot in the next 
builds until the critical path finishes. This code is also super complicated.
                
> Make weave mode work reliably
> -----------------------------
>
>                 Key: MNG-4633
>                 URL: https://jira.codehaus.org/browse/MNG-4633
>             Project: Maven 2 & 3
>          Issue Type: Improvement
>    Affects Versions: 3.0-beta-1
>            Reporter: Kristian Rosenvold
>            Assignee: Kristian Rosenvold
>             Fix For: 3.x / Backlog
>
>
> m3 trunk currently contains two different concurrent-build implementations; 
> parallel and weave. The main target for m3 is for production quality 
> "parallel" to be  ready; there are numerous plugins that will need to adjust 
> to this functionality. 
> Alongside this activity weave mode will also be fine-tuned and evaluated; due 
> to the generally tighter concurrency in this model, weave mode is more likely 
> to reveal concurrency related issues in both maven, plugins, libraries and 
> the jdk. 
> This task is used to collect all commits related to making weave mode work 
> reliably. The final evaluation of weave mode will be taken at a later stage.
> In the event that Weave mode is to be abandoned, the class 
> LifecycleWeaveBuilder contains instructions on how/what can be removed from 
> m3 core.

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