andygrove commented on a change in pull request #8992:
URL: https://github.com/apache/arrow/pull/8992#discussion_r548227986
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File path: rust/datafusion/src/physical_plan/parquet.rs
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@@ -99,18 +154,38 @@ impl ParquetExec {
.collect(),
);
+ // sum the statistics
+ let mut num_rows = 0;
+ let mut total_byte_size = 0;
+ for part in &partitions {
+ num_rows += part.statistics.num_rows.unwrap_or(0);
+ total_byte_size += part.statistics.total_byte_size.unwrap_or(0);
+ }
+ let statistics = Statistics {
+ num_rows: if num_rows == 0 {
+ None
Review comment:
Yes, that was a bit sloppy. This is now fixed.
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