alamb commented on code in PR #23262:
URL: https://github.com/apache/datafusion/pull/23262#discussion_r3501795120
##########
datafusion/physical-plan/src/aggregates/group_values/multi_group_by/mod.rs:
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@@ -1117,7 +1117,7 @@ impl<const STREAMING: bool> GroupValues for
GroupValuesColumn<STREAMING> {
// a real Result rather than panicking.
let fresh = Self::build_group_columns(&self.schema)?;
let group_values = mem::replace(&mut self.group_values, fresh);
-
+ self.map.clear();
Review Comment:
Can emit ever be called more than once with `EmitTo::All` ? That seems like
it would be a bug right there
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