[GitHub] [spark] cloud-fan commented on a diff in pull request #39925: [SPARK-41812][SPARK-41823][CONNECT][SQL][PYTHON] Resolve ambiguous columns issue in `Join`

["cloud-fan (via GitHub)" <gi...@apache.org>]

cloud-fan commented on code in PR #39925:
URL: https://github.com/apache/spark/pull/39925#discussion_r1102228684


##########
connector/connect/common/src/main/protobuf/spark/connect/relations.proto:
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@@ -93,6 +93,9 @@ message Unknown {}
 message RelationCommon {
   // (Required) Shared relation metadata.
   string source_info = 1;
+
+  // (Optional) A globally unique id for a given connect plan.

Review Comment:
   shall we mention it's per-client global?



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