isidentical opened a new pull request, #4521:
URL: https://github.com/apache/arrow-datafusion/pull/4521
# Which issue does this PR close?
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Closes #4323.
# Rationale for this change
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Even in the cases where none of the files included stats/byte size
information, `get_statistics_with_limit` was generating statistics with the
claims of zero rows / zero bytes. This PR fixes it to only include the number
of rows when it is known.
# What changes are included in this PR?
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For preserving the old relaxed behavior, this PR changes the collection to
include row/byte count information when any of them are present in any of the
files. If it is only present in even one file, that is enough for the listing
(all the others are counted towards zero rows, which is the existing behavior).
# Are these changes tested?
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Yes.
# Are there any user-facing changes?
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No.
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