HyukjinKwon commented on code in PR #37216:
URL: https://github.com/apache/spark/pull/37216#discussion_r928335869
##########
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/aggregate/interfaces.scala:
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@@ -638,3 +641,67 @@ abstract class TypedImperativeAggregate[T] extends
ImperativeAggregate {
buffer.get(offset, anyObjectType).asInstanceOf[T]
}
}
+
+/**
+ * A special TypedImperativeAggregate that uses `OpenHashMap[AnyRef, Long]` as
internal
Review Comment:
```suggestion
* A special [[TypedImperativeAggregate]] that uses `OpenHashMap[AnyRef,
Long]` as internal
```
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