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[fix][cp] Fix withIntDistributionForField copy#442

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WangGuangxin wants to merge 1 commit intobytedance:mainfrom
WangGuangxin:cp_11644
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[fix][cp] Fix withIntDistributionForField copy#442
WangGuangxin wants to merge 1 commit intobytedance:mainfrom
WangGuangxin:cp_11644

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@WangGuangxin WangGuangxin commented Mar 30, 2026

What problem does this PR solve?

Issue Number: close #191

Type of Change

  • 🐛 Bug fix (non-breaking change which fixes an issue)
  • ✨ New feature (non-breaking change which adds functionality)
  • 🚀 Performance improvement (optimization)
  • ⚠️ Breaking change (fix or feature that would cause existing functionality to change)
  • 🔨 Refactoring (no logic changes)
  • 🔧 Build/CI or Infrastructure changes
  • 📝 Documentation only

Description

For decimal(8, 5) data build, Arrow reports below error due to out of range. The reason is in the copy of 'withIntDistributionForField', the target index and source index are reversed.

`C++ exception with description "Invalid: Invalid cast from Decimal128 to 4 byte integer" thrown in the test body.

Performance Impact

  • No Impact: This change does not affect the critical path (e.g., build system, doc, error handling).

  • Positive Impact: I have run benchmarks.

    Click to view Benchmark Results
    Paste your google-benchmark or TPC-H results here.
    Before: 10.5s
    After:   8.2s  (+20%)
    
  • Negative Impact: Explained below (e.g., trade-off for correctness).

Release Note

Checklist (For Author)

  • I have added/updated unit tests (ctest).
  • I have verified the code with local build (Release/Debug).
  • I have run clang-format / linters.
  • (Optional) I have run Sanitizers (ASAN/TSAN) locally for complex C++ changes.
  • No need to test or manual test.

Breaking Changes

  • No

  • Yes (Description: ...)

    Click to view Breaking Changes
    Breaking Changes:
    - Description of the breaking change.
    - Possible solutions or workarounds.
    - Any other relevant information.
    

Summary:
For decimal(8, 5) data build, Arrow reports below error due to out of range.
The reason is in the copy of 'withIntDistributionForField', the target index
and source index are reversed.
```
`C++ exception with description "Invalid: Invalid cast from Decimal128 to 4 byte integer" thrown in the test body.
```

Pull Request resolved: facebookincubator/velox#11644

Reviewed By: Yuhta

Differential Revision: D66560309

Pulled By: bikramSingh91

fbshipit-source-id: bd594f67a58b92915ea3bf24bee3a311db11eb04
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