Dandandan commented on code in PR #15697:
URL: https://github.com/apache/datafusion/pull/15697#discussion_r2041118282
##########
datafusion/physical-plan/src/topk/mod.rs:
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@@ -202,24 +204,93 @@ impl TopK {
})
.collect::<Result<Vec<_>>>()?;
+ // selected indices
+ let mut selected_rows = None;
+
+ // If the heap doesn't have k elements yet, we can't create thresholds
+ match self.heap.max() {
+ Some(max_row) => {
+ // Get the batch that contains the max row
Review Comment:
Took a bit of code from @adriangb
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