xborder opened a new issue, #1188:
URL: https://github.com/apache/arrow-java/issues/1188
### Describe the enhancement requested
The current Test GitHub Actions workflow spends a large amount of runner
time repeatedly compiling the same Maven reactor across the matrix.
- Today, most jobs run `build.sh` followed by `test.sh`. `build.sh` runs a
full `mvn clean install -DskipTests`, then `test.sh` runs `mvn clean test`,
which deletes the build outputs and recompiles before running tests.
- JNI/C Data jobs add additional Maven test invocations and native build
work, so some jobs compile or build equivalent artifacts multiple times.
- For macOS and Windows runners, Java bytecode is compiled again even though
the project targets maven.compiler.release=17, making the compiled classes
portable across JDK 17+ and across OS/architecture for pure Java tests.
- Other smaller inefficiencies:
- The workflow can run twice for PR branch updates because both `push` and
`pull_request` triggers fire.f
- Integration is not required for every PR, but currently participates
broadly in the workflow.
This was triggered by
https://lists.apache.org/thread/drf0o5kzg1zfmok7gc09k8qz8hh9ymvh
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