adriangb commented on code in PR #19094:
URL: https://github.com/apache/datafusion/pull/19094#discussion_r2590236048
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datafusion/core/tests/physical_optimizer/partition_statistics.rs:
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@@ -418,7 +417,7 @@ mod test {
let expected_stats = Statistics {
num_rows: Precision::Inexact(4),
- total_byte_size: Precision::Inexact(220),
Review Comment:
I'm trying to understand why these numbers changed. I think the issue is
that the way the row sizes are calculated when the statistics are initially
computed doesn't match how the row sizes are calculated by `ProjectionExprs`.
I'm guessing they're measuring different things (parquet row size vs arrow row
size??). Unfortunately the `Statistics` struct doesn't have much in terms of
documentation.
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