Re: [m2e-users] maven 3.0.3 - performance with version ranges

[Paul French <pa...@kirona.com>]

wow!

Dropped in aether 1.13 into apache maven lib/ext (so patched applied 
external to eclipse) and also updated the m2e embedded runtime plugin 
org.eclipse.m2e.maven.runtime_1.0.1.201106291304  (as a quick test) and 
now as an example a build that took 1 minute 43 secs now only takes 5 
seconds.

Will build our own embedded runtime as instructed below now.

Thanks for everyone's help.

Any ideas when an official maven 3.0.4 release will happen as well as an 
official maven 3.0.4 embedded runtime m2e connector ?

Paul French
Kirona Solutions Ltd
Tel: 07803 122 058
E-Mail: paul.french@kirona.com
Web: www.kirona.com <http://www.kirona.com>

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On 30/09/2011 12:28, Igor Fedorenko wrote:
> I do not know if the underlying problem has been solved with aether
> and/or maven. You need to talk to aether and/or maven developers to find
> out.
>
> As far updating m2e embedded maven runtime, it is relatively easy now --
> setup development environment as explain in [1], then change
> m2e-maven-runtime/org.eclipse.m2e.maven.runtime/pom.xml to use whatever
> version of dependencies you want to try.
>
> [1] http://wiki.eclipse.org/M2E_Development_Environment
>
> -- 
> Regards,
> Igor
>
> On 11-09-30 6:22 AM, Paul French wrote:
>> maven 3.0.3 has terrible performance and memory usage when using version
>> ranges. This has a knock on effect using m2e
>>
>> It takes maven ages to update the maven dependencies.
>>
>> I have a main project with a some version ranged dependencies which in
>> turn have versioned ranged dependencies. Outside of eclipse it takes
>> many minutes and considerable memory to get a successful build. Most
>> time is spent resolving the dependencies.
>>
>> I have also run maven offline when I know I have all dependencies in my
>> local repo and it is still very, very slow.
>>
>> In m2e (and workspace resolution on), you can check out a dependency
>> that is very simple and this triggers a re-build of the main project.
>> The same happens when you delete the dependent project or make pom
>> version changes to it. So in eclipse this becomes really tedious
>> especially if you have 4 or 5 related projects checked out. You end up
>> sitting and waiting for your workspace to be re-built all the time.
>>
>> I understand what maven is doing but I do believe it could be done a lot
>> better when resolving version ranges.
>>
>> I also know maven 3.0.3 uses aether 1.11 to so its dependency 
>> management.
>>
>> I'm really keen to try and find a solution. aether 1.12 has been
>> released. Is there anyway I can hook this into maven 3.0.3
>>
>> Does aether 1.12 solve
>>
>> Is there a pre-release of maven 3.0.4 out there yet that I can try and
>> does it use aether 1.12 ?
>>
>> Thanks
>> Paul
>>
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