[jira] [Assigned] (MRESOLVER-586) In typical setups, DefaultArtifact copies the same maps over and over again

["Tamas Cservenak (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/MRESOLVER-586?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Tamas Cservenak reassigned MRESOLVER-586:
-----------------------------------------

    Assignee: Tamas Cservenak

> In typical setups, DefaultArtifact copies the same maps over and over again
> ---------------------------------------------------------------------------
>
>                 Key: MRESOLVER-586
>                 URL: https://issues.apache.org/jira/browse/MRESOLVER-586
>             Project: Maven Resolver
>          Issue Type: Improvement
>          Components: Resolver
>    Affects Versions: 2.0.0, 1.9.21
>            Reporter: Guillaume Smet
>            Assignee: Tamas Cservenak
>            Priority: Major
>             Fix For: 2.0.1, 1.9.22
>
>
> h2. Context
> This is part of some work we are trying to do to reduce the build time usage memory of Quarkus.
> We discussed this a bit with Tamas.
> While this doesn't constitute a fix for our main issue, it should be an easy win.
> h2. Problem
> We have a BOM with 2000+ entries and in `ArtifactDescriptorReaderDelegate`, the managed dependencies are copied to the descriptors using the `convert` method that in turn will create a new DefaultArtifact.
> Most of these DefaultArtifacts contain a copy of the very same `type.getProperties()` as they don't have specific artifact properties.
> Improving the DefaultArtifact#merge() method to avoid the copy when the artifact doesn't have any specific properties would already be an easy win.
> PR to come.



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