[IMPALA-12212] Upgrade Maven to 3.9 to enable parallel dependency downloads

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: Impala 4.3.0
• Fix Version/s: Impala 4.3.0
• Component/s: Frontend, Infrastructure
• Epic Color: ghx-label-13
• Assignee: Laszlo Gaal
• Reporter: Laszlo Gaal
• Created: 14/Jun/23 14:24
• Updated: 14/Jul/24 20:14
• Resolved: 24/Jul/23 18:51

Description

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