[GitHub] [spark] zhengruifeng commented on a diff in pull request #39985: [SPARK-42412][WIP] Initial prototype implementation of PySpark ML via Spark connect

["zhengruifeng (via GitHub)" <gi...@apache.org>]

zhengruifeng commented on code in PR #39985:
URL: https://github.com/apache/spark/pull/39985#discussion_r1108192576


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connector/connect/common/src/main/protobuf/spark/connect/relations.proto:
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@@ -76,6 +76,8 @@ message Relation {
     StatFreqItems freq_items = 106;
     StatSampleBy sample_by = 107;
 
+    int64 server_side_dataframe_id = 108;

Review Comment:
   what is the dataframe/logicalplan here? is it the output of model prediction (`model.transform`) ?



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