amaliujia commented on code in PR #38578:
URL: https://github.com/apache/spark/pull/38578#discussion_r1017575255
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connector/connect/src/main/protobuf/spark/connect/relations.proto:
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@@ -272,5 +273,13 @@ message StatFunction {
message Summary {
repeated string statistics = 1;
}
+
+ // StatFunctions.crossTabulate
+ message CrossTabulate {
Review Comment:
Can we add a bit more comments on such proto? Basically proto is also API
that someone will read to understand the contract.
Beam's implementation offers a good example of comments for proto:
https://github.com/apache/beam/blob/master/model/pipeline/src/main/proto/org/apache/beam/model/pipeline/v1/beam_runner_api.proto
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