GH-49539: [C++][Parquet] Fix argument count check in parquet_scan#49540
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raulcd merged 1 commit intoapache:mainfrom Apr 7, 2026
Merged
GH-49539: [C++][Parquet] Fix argument count check in parquet_scan#49540raulcd merged 1 commit intoapache:mainfrom
raulcd merged 1 commit intoapache:mainfrom
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Thanks for the PR! Looks good to me, I've triggered CI. Instead of removing the PR template, could you fill it with the required sections? The message goes directly into the commit history and it's helpful for us to be consistent.
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After merging your PR, Conbench analyzed the 3 benchmarking runs that have been run so far on merge-commit da6870d. There were no benchmark performance regressions. 🎉 The full Conbench report has more details. It also includes information about 9 possible false positives for unstable benchmarks that are known to sometimes produce them. |
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Rationale for this change
Running parquet-scan without arguments currently triggers a confusing IOError instead of showing how to use the tool.
What changes are included in this PR?
Updated the argument validation from argc < 1 (always false) to argc < 2.
Are these changes tested?
Yes.
Are there any user-facing changes?
Yes.
Old behavior:
$ parquet-scan
Parquet error: IOError: Failed to open local file ''. Detail: [errno 2] No such file or directory
New behavior:
$ parquet-scan
Usage: parquet-scan [--batch-size=] [--columns=...]