HippoBaro commented on code in PR #9795:
URL: https://github.com/apache/arrow-rs/pull/9795#discussion_r3134829623
##########
parquet/src/column/writer/mod.rs:
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@@ -708,15 +694,15 @@ impl<'a, E: ColumnValueEncoder> GenericColumnWriter<'a,
E> {
));
}
- // Count the occasions where we start a new row
- for &level in levels {
- self.page_metrics.num_buffered_rows += (level == 0) as u32
- }
-
- // Update histogram
- self.page_metrics.update_repetition_level_histogram(levels);
-
- self.rep_levels_encoder.put(levels);
+ let mut new_rows = 0u32;
+ self.rep_levels_encoder
+ .put_with_observer(levels, |level, count| {
+ new_rows += (count as u32) * (level == 0) as u32;
+ if let Some(ref mut h) =
self.page_metrics.repetition_level_histogram {
Review Comment:
I've pushed the above change!
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