Dandandan commented on code in PR #194:
URL:
https://github.com/apache/arrow-datafusion-comet/pull/194#discussion_r1522078000
##########
spark/src/main/scala/org/apache/comet/serde/QueryPlanSerde.scala:
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@@ -1836,6 +1838,48 @@ object QueryPlanSerde extends Logging with
ShimQueryPlanSerde {
}
}
+ case join: ShuffledHashJoinExec if isCometOperatorEnabled(op.conf,
"hash_join") =>
+ if (join.buildSide == BuildRight) {
+ // DataFusion HashJoin assumes build side is always left.
+ // TODO: support BuildRight
Review Comment:
Just reading along, won't `BuildRight` be just swapping build and probe? I
think the left/right naming in DataFusion is just there because it used to be
called like this, but in practice there is only build vs probe in the operator.
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