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From "Dan Fabulich (JIRA)" <>
Subject [jira] Updated: (MNG-3004) Allow build lifecycle to execute projects in parallel
Date Tue, 10 Nov 2009 02:42:55 GMT


Dan Fabulich updated MNG-3004:

    Summary: Allow build lifecycle to execute projects in parallel  (was: Allow build lifecycle
to execute tasks in parallel)

> Allow build lifecycle to execute projects in parallel
> -----------------------------------------------------
>                 Key: MNG-3004
>                 URL:
>             Project: Maven 2
>          Issue Type: Improvement
>          Components: Bootstrap & Build, General, Performance
>    Affects Versions: 2.0.6
>            Reporter: Nigel Magnay
>             Fix For: 2.3.x
>         Attachments: parallel-builds.patch
> One of the great advantages with maven over scripted build environments is that it can
calculate the dependencies of the build, and it could execute items that are independent of
each other in parallel.
> Unfortunately it currently doesn't do this, which would be a big win over tools such
as 'ant'. It also means that multicore machines have lots of idle capacity when running a
serial build that could be utilised.
> I had a quick shot at seeing what might be required. Bear in mind this is the first time
I have looked at maven internally, and I was just trying to feel my way around and build a
POC. I got some of the way there, but my build threads don't seem to have the correct classpath
- I think this is something to do with plexus / classworlds - but I don't know enough.
> It'd be great to get this feature in a future version, or a way of running my hack (figuring
out why in a thread has not the plexus stuff) in the interim.

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