[CI] Build Java and C Data artifacts once
@xborder is already working on this.
Since Sep 2, 2026.
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This issue has not been assessed yet.
Description
Describe the enhancement requested
The CI GitHub Actions workflow currently recompiles the project in every matrix job. This causes repeated Maven and native compilation across JDK versions and operating systems.
I'd suggest to change the workflows to build the java artifacts once with JDK 17 (since it is the version used to release) and separate build from test execution into separate jobs.
This would also help in reducing the number of minutes spent on runners. Original concern was raised in https://lists.apache.org/thread/drf0o5kzg1zfmok7gc09k8qz8hh9ymvh
- Dominant language
- Java
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