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From "Michael Osipov (JIRA)" <>
Subject [jira] [Updated] (MNG-5896) Download dependency POMs in parallel
Date Sat, 17 Dec 2016 19:51:58 GMT


Michael Osipov updated MNG-5896:
    Assignee:     (was: Michael Osipov)

> Download dependency POMs in parallel
> ------------------------------------
>                 Key: MNG-5896
>                 URL:
>             Project: Maven
>          Issue Type: Improvement
>          Components: Dependencies
>    Affects Versions: 3.3.3
>            Reporter: Harald Wellmann
>             Fix For: 3.4.0
> 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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