jhorstmann opened a new pull request, #7354:
URL: https://github.com/apache/arrow-rs/pull/7354
# Which issue does this PR close?
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Closes #7341.
# Rationale for this change
`PageEncodingStats` can be useful to determine up front whether all pages of
a column are dictionary encoded. Keeping track of the counts per page type and
encoding is also quite cheap, and their metadata size is small, so they can be
enabled always independent of the `EnabledStatistics` setting.
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# What changes are included in this PR?
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# Are there any user-facing changes?
No api changes, written files will now include `PageEncodingStats` which
previously were always `None`.
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