Dandandan commented on code in PR #23257:
URL: https://github.com/apache/datafusion/pull/23257#discussion_r3501124631
##########
benchmarks/src/hj.rs:
##########
@@ -487,6 +533,20 @@ impl RunOpt {
);
benchmark_run.start_new_case(&case_name);
+ // For Q23 force Partitioned mode: zero the CollectLeft thresholds
+ // so the planner cannot prove the build side is small (as happens
+ // when the datasource provides no row-count stats).
+ if query.isolate_partitioned_join {
+ ctx.sql(
+ "SET
datafusion.optimizer.hash_join_single_partition_threshold = 0",
+ )
+ .await?;
+ ctx.sql(
+ "SET
datafusion.optimizer.hash_join_single_partition_threshold_rows = 0",
Review Comment:
Why?
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