englefly commented on code in PR #65024:
URL: https://github.com/apache/doris/pull/65024#discussion_r3503549466
##########
fe/fe-core/src/main/java/org/apache/doris/nereids/glue/translator/PhysicalPlanTranslator.java:
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@@ -3068,9 +2988,125 @@ private PlanFragment connectJoinNode(HashJoinNode
hashJoinNode, PlanFragment lef
return leftFragment;
}
+ /**
+ * Check whether the one-phase GLOBAL hash aggregate can be fused with its
+ * distribute child into a BucketedAggregationNode. This eliminates
exchange
+ * overhead on single-BE deployments by using in-memory per-bucket merging.
Review Comment:
review3
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