Dandandan commented on code in PR #20004:
URL: https://github.com/apache/datafusion/pull/20004#discussion_r2727401729
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datafusion/datasource-parquet/src/metadata.rs:
##########
@@ -487,22 +487,38 @@ fn summarize_min_max_null_counts(
if let Some(max_acc) = &mut accumulators.max_accs[logical_schema_index] {
max_acc.update_batch(&[Arc::clone(&max_values)])?;
- let mut cur_max_acc = max_acc.clone();
- accumulators.is_max_value_exact[logical_schema_index] =
has_any_exact_match(
- &cur_max_acc.evaluate()?,
- &max_values,
- &is_max_value_exact_stat,
- );
+
+ let exactness = &is_max_value_exact_stat;
+ if !exactness.is_empty()
+ && exactness.null_count() == 0
+ && exactness.true_count() == exactness.len()
+ {
+ accumulators.is_max_value_exact[logical_schema_index] = Some(true);
Review Comment:
Yes!
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