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  1. Apache Arrow
  2. ARROW-10580

[C++] When Validating, ensure DenseUnionArray offsets are increasing

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    • Improvement
    • Status: Resolved
    • Major
    • Resolution: Fixed
    • 2.0.0
    • 4.0.0
    • C++

    Description

      https://github.com/apache/arrow/pull/8652#discussion_r522332386

      The format documentation states that "The respective offsets for each child value array must be in order / increasing."
      https://arrow.apache.org/docs/format/Columnar.html#dense-union

      However this is not currently checked in Array::ValidateFull

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            apitrou Antoine Pitrou
            bkietz Ben Kietzman
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