godfreyhe commented on a change in pull request #12028:
URL: https://github.com/apache/flink/pull/12028#discussion_r429726451
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File path:
flink-table/flink-table-planner-blink/src/main/scala/org/apache/flink/table/planner/plan/rules/FlinkStreamRuleSets.scala
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@@ -109,6 +109,8 @@ object FlinkStreamRuleSets {
List(
//removes constant keys from an Agg
AggregateProjectPullUpConstantsRule.INSTANCE,
+ //fix: FLINK-17553
Review comment:
please give a more clear comment here
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