pan3793 opened a new pull request, #54979:
URL: https://github.com/apache/spark/pull/54979
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### What changes were proposed in this pull request?
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Migrate `build/mvn` default tgz downloading from ASF
[`closer.lua`](https://infra.apache.org/release-download-pages.html#custom) to
Maven Central ( `DEFAULT_ARTIFACT_REPOSITORY`, default points to Google mirror).
Also, improve other scripts that use `DEFAULT_ARTIFACT_REPOSITORY`, now it
works well with and without a trailing slash.
### Why are the changes needed?
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ASF services have not been very stable recently, which reduces the pressure
on the ASF download site.
`closer.lua` routes the downloading to either the ASF CDN or archive, while
Maven Central preserves [all historical
versions](https://repo1.maven.org/maven2/org/apache/maven/apache-maven/), so
this also benefits older branches that use old Maven versions (if we backport
it to older branches).
### Does this PR introduce _any_ user-facing change?
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No.
### How was this patch tested?
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Manually tested - fresh clone spark repo, and run `build/mvn`, `build/sbt`,
`dev/check-license`.
### Was this patch authored or co-authored using generative AI tooling?
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No.
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