Drop JDK 21 from the PR build matrix - #1937
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The PR build runs the full incremental build once per JDK, so every PR enqueues three jobs. JDK 17 is the minimum supported version and JDK 25 is the latest LTS, and these two bound what JDK 21 would catch. Testing on 17 and 25 only cuts the PR queue by a third. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
davsclaus
approved these changes
Sep 2, 2026
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The PR build workflow runs the full incremental build once per JDK, so every push to a PR enqueues three jobs (17, 21, 25). With the current volume of open PRs the queue backs up and reviewers wait on checks.
JDK 17 is the minimum supported version (#1718) and JDK 25 is the latest LTS, so the two of them bound what a JDK 21 run would catch. This change drops 21 from the matrix, cutting every PR's CI cost by a third.
Only
pr-build-main.ymlhas a JDK matrix; the sync and SBOM workflows already run on a fixed JDK 17 and are unchanged. Existing open PRs keep the three-job matrix until they are rebased onmain.Claude Code on behalf of Federico Mariani