berkaysynnada commented on code in PR #16905:
URL: https://github.com/apache/datafusion/pull/16905#discussion_r2232864563
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datafusion/core/benches/partial_sort_benchmark.rs:
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@@ -0,0 +1,239 @@
+use criterion::{black_box, criterion_group, criterion_main, Criterion};
+use datafusion::arrow::array::Int32Array;
+use datafusion::arrow::datatypes::{DataType, Field, Schema};
+use datafusion::arrow::record_batch::RecordBatch;
+use datafusion::datasource::MemTable;
+use datafusion::logical_expr::{col, SortExpr};
+use datafusion::prelude::*;
+use datafusion_common::Result;
+use std::sync::Arc;
+use tokio::runtime::Runtime;
+
+fn create_presorted_data(rows: usize, groups: usize) -> Result<RecordBatch> {
Review Comment:
can you share these benchmark results in the PR body, before and after the
change?
I think we need more comprehensive analysis here to apply this change, such
as total row counts, batch sizes, number of distinct prefix values, having a
fetch value, cardinality of sort columns, parallelism etc. If you have time,
investigating these would be very helpful to make the right call
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