GH-1283: Optimize number of build compilations in CI - #1284

Open

xborder wants to merge 15 commits into

apache:mainfrom

xborder:ci-build-once-test-many

Commits on Oct 1, 2026

MINOR: Build test artifacts once in CI
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513a69c
Simplify build-once test workflow
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bcc9111
Restore custom Surefire test coverage
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792fda8
Make Vector test passes explicit
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99574ff
MINOR: Align build-once workflow with current CI matrix
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f71a6f6
Fix stale Arrow artifacts in hosted tests
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e9591df
Verify prebuilt test artifacts
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0fad043
Simplify prebuilt test validation
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5fc4f18
Optimize build-once workflow caches
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a775dad
Quote workflow build JDK
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72e6787
Fix build JDK workflow context
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398329f
Use established Maven cache keys
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04b74d5
Use shallow test checkouts
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9dd2495
Sync setup-java version with upstream
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6d4c6eb
Fix test workflow review comments
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5309167