Github user yhuai commented on a diff in the pull request:
https://github.com/apache/spark/pull/8015#discussion_r36562182
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/aggregate/TungstenAggregationIterator.scala
---
@@ -397,14 +397,20 @@ class TungstenAggregationIterator(
private[this] var mapIteratorHasNext: Boolean = false
///////////////////////////////////////////////////////////////////////////
- // Part 4: The function used to switch this iterator from hash-based
- // aggregation to sort-based aggregation.
+ // Part 3: Methods and fields used by sort-based aggregation.
--- End diff --
I will have a PR to change other parts of this class. I can update the
comment.
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