nuno-faria commented on code in PR #26286:
URL: https://github.com/apache/datafusion/pull/26286#discussion_r4275199467
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datafusion/physical-plan/src/topk/mod.rs:
##########
@@ -3157,6 +3161,53 @@ mod tests {
)
}
+ #[test]
+ fn test_topk_size_common_sort_prefix_converter() -> Result<()> {
+ let schema = make_ab_schema();
+ let sort_expr = PhysicalSortExpr {
+ expr: col("a", schema.as_ref())?,
+ options: SortOptions::default(),
+ };
+ let make_topk = |common_sort_prefix| {
+ TopK::try_new(
+ 0,
+ Arc::clone(&schema),
+ common_sort_prefix,
+ LexOrdering::from([sort_expr.clone()]),
+ 3,
+ 2,
+ Arc::new(RuntimeEnv::default()),
+ &ExecutionPlanMetricsSet::new(),
+ make_topk_filter(),
+ )
+ };
+ let without_prefix = make_topk(vec![])?;
+ let mut with_prefix = make_topk(vec![sort_expr.clone()])?;
+ let converter_size = with_prefix
+ .common_sort_prefix_converter
+ .as_ref()
+ .expect("common sort prefix converter")
+ .size();
+ assert!(converter_size > 0);
+ assert!(without_prefix.common_sort_prefix_converter.is_none());
+ assert_eq!(
+ without_prefix.size(),
+ size_of::<TopK>()
+ + without_prefix.row_converter.size()
+ + without_prefix.scratch_rows.size()
+ + without_prefix.heap.size()
+ );
+ assert_eq!(with_prefix.size(), without_prefix.size() + converter_size);
+
+ with_prefix.insert_batch(make_ab_batch(
+ Arc::clone(&schema),
+ &[Some(1), Some(2)],
+ &[1.0, 2.0],
+ )?)?;
+ assert_eq!(with_prefix.reservation.size(), with_prefix.size());
Review Comment:
Is this part necessary for this test?
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