[jira] [Comment Edited] (MNG-5896) Download dependency POMs in parallel

["Michael Osipov (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/MNG-5896?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15071866#comment-15071866 ] 

Michael Osipov edited comment on MNG-5896 at 12/26/15 11:25 AM:
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Have you done some performance measurements on popular, large projects?


was (Author: michael-o):
Have you made some performance measurements on popular, large projects?

> Download dependency POMs in parallel
> ------------------------------------
>
>                 Key: MNG-5896
>                 URL: https://issues.apache.org/jira/browse/MNG-5896
>             Project: Maven
>          Issue Type: Improvement
>          Components: Dependencies
>    Affects Versions: 3.3.3
>            Reporter: Harald Wellmann
>
> h3. Background
> When building a project with dependencies not yet available in the local repository, I noticed that Maven 3.3.3 first downloads the dependency POMs _sequentially_ and then proceeds downloading the dependency JARs with up to 5 threads _in parallel_.
> Due to this, when first building a project with a large number of dependencies, downloading a large number of small POMs may take a lot longer than downloading the much larger JARs, or even longer than building the project itself, especially when a repository manager is used which increases the download latency.
> h3. Enhancement
> Download POMs of (transitive) dependencies in parallel to significantly speed up initial builds of large projects.



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