zhengruifeng commented on code in PR #43010:
URL: https://github.com/apache/spark/pull/43010#discussion_r1332491666
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connector/connect/common/src/main/protobuf/spark/connect/relations.proto:
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@@ -990,6 +990,9 @@ message CollectMetrics {
// (Required) The metric sequence.
repeated Expression metrics = 3;
+
+ // (Required) A unique DataFrame id.
+ int64 dataframe_id = 4;
Review Comment:
since `dataframe_id` is set the `plan_id`
why not reusing the `plan_id` in `RelationCommon`?
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