[jira] [Created] (IMPALA-12212) Upgrade Maven to 3.9 to enable parallel dependency downloads

["Laszlo Gaal (Jira)" <ji...@apache.org>]

Laszlo Gaal created IMPALA-12212:
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             Summary: Upgrade Maven to 3.9 to enable parallel dependency downloads
                 Key: IMPALA-12212
                 URL: https://issues.apache.org/jira/browse/IMPALA-12212
             Project: IMPALA
          Issue Type: Improvement
          Components: Frontend, Infrastructure
    Affects Versions: Impala 4.3.0
            Reporter: Laszlo Gaal


Maven 3.9 introduced a new dependency resolver (the native HTTP resolver)[1][2], which offers the option of traversing a project's dependency tree in a breadth-first manner in addition to the old default depth-first traversal[3]. This new mode also enables the parallel download of dependency POMs (which had to happen in a serial, sequential way) with the old resolver.
Impala should embrace the new download mechanism, as it could speed up the dependency download phase of the frontend build significantly.

[1] https://maven.apache.org/docs/3.9.0/release-notes.html, [2] https://maven.apache.org/guides/mini/guide-resolver-transport.html
[3] see the {{aether.dependencyCollector.impl}} option at https://maven.apache.org/resolver/configuration.html



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