etseidl opened a new pull request, #6316:
URL: https://github.com/apache/arrow-rs/pull/6316
# Which issue does this PR close?
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Closes #6315.
# Rationale for this change
Pages with all null values should write an empty array for min and max to
the ColumnIndex. The current behavior is to write one `0` byte for each.
# What changes are included in this PR?
Pass empty vectors to `ColumnIndexBuilder::append`.
# Are there any user-facing changes?
No, since min/max statistics should be ignored for pages with all nulls.
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If there are any breaking changes to public APIs, please add the `breaking
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