fix: Fix flaky test TestProtoConversionUtil#allFieldsSet_wellKnownTyp…

[cshuo]

…esAndTimestampsAsRecords

Describe the issue this Pull Request addresses

TestProtoConversionUtil#allFieldsSet_wellKnownTypesAndTimestampsAsRecords can fail nondeterministically due to random unsigned test data generation.

A concrete failure example:

• Expected record had "primitive_unsigned_int": 3514477690
• Actual record had "primitive_unsigned_int": -780489606

These two values represent the same 32-bit pattern, but one is interpreted as unsigned (3514477690) and the other as signed (-780489606). Because the test compares full records, this mismatch causes assertion failure.

Root cause in test input generation: primitiveUnsignedInt was generated via RANDOM.nextInt() (can be negative).

Summary and Changelog

Updated unsigned random data generation in TestProtoConversionUtil:

• primitiveUnsignedInt
  • from: RANDOM.nextInt()
  • to: Math.abs(RANDOM.nextInt())

Impact

Improved determinism and reduced flaky failures.

Risk Level

low.

Documentation Update

Contributor's checklist

• Read through contributor's guide
• Enough context is provided in the sections above
• Adequate tests were added if applicable

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 68.42%. Comparing base (19c4cc9) to head (6b1eef9).

Additional details and impacted files

@@             Coverage Diff              @@
##             master   #18352      +/-   ##
============================================
+ Coverage     66.10%   68.42%   +2.32%     
- Complexity    22301    27402    +5101     
============================================
  Files          1988     2423     +435     
  Lines        110007   132458   +22451     
  Branches      13867    15974    +2107     
============================================
+ Hits          72716    90632   +17916     
- Misses        31104    34778    +3674     
- Partials       6187     7048     +861     

Flag	Coverage Δ
common-and-other-modules	44.34% <ø> (?)
hadoop-mr-java-client	45.16% <ø> (-0.01%)	⬇️
spark-client-hadoop-common	48.31% <ø> (ø)
spark-java-tests	48.82% <ø> (ø)
spark-scala-tests	45.00% <ø> (-0.01%)	⬇️
utilities	38.61% <ø> (+<0.01%)	⬆️

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see 779 files with indirect coverage changes

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[hudi-bot]

CI report:

• 6b1eef9 Azure: SUCCESS

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