cloud-fan commented on code in PR #38166:
URL: https://github.com/apache/spark/pull/38166#discussion_r991000364
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connector/connect/src/main/protobuf/spark/connect/relations.proto:
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@@ -107,15 +107,17 @@ message Join {
}
}
-// Relation of type [[Union]], at least one input must be set.
-message Union {
+// Relation of type [[SetOperation]]
+message SetOperation {
Review Comment:
After a second thought, if we treat the proto layer as a standard for
general SQL query plans, it doesn't have to be consistent with catalyst. Then a
single `SetOperation` LGTM.
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