slfan1989 opened a new pull request, #2021:
URL: https://github.com/apache/auron/pull/2021
### Which issue does this PR close?
Closes #2020
### Rationale for this change
Currently, local builds are always single-threaded, which can be slow on
multi-core machines. Docker builds hardcode `-T8`, which cannot be overridden
by users. This change adds a `--threads` option to `auron-build.sh` to give
users control over Maven build parallelism.
### What changes are included in this PR?
1. **auron-build.sh**
- Added `--threads` parameter parsing and validation
- Unified thread configuration logic: user-specified value takes
precedence, Docker defaults to 8 threads, local defaults to single-threaded
- Removed hardcoded `-T8` from Docker build section
- Updated help text to document the new option
2. **CONTRIBUTING.md**
- Documented `--threads` option under Build Options section
- Described default behavior for local vs Docker builds
### Are there any user-facing changes?
Yes. Users can now specify `--threads` to control Maven build parallelism
Default behavior remains unchanged (backward compatible):
- Local builds: single-threaded
- Docker builds: 8 threads
### How was this patch tested?
- Verified `./auron-build.sh --help` displays correct usage information
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