Kimahriman commented on code in PR #49005:
URL: https://github.com/apache/spark/pull/49005#discussion_r1863472521


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sql/core/src/main/scala/org/apache/spark/sql/execution/python/FlatMapGroupsInBatchExec.scala:
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@@ -82,13 +83,14 @@ trait FlatMapGroupsInBatchExec extends SparkPlan with 
UnaryExecNode with PythonS
 
       val data = groupedData(iter, dedupAttributes)
 
-      val runner = new ArrowPythonRunner(
+      val runner = new GroupedArrowPythonRunner(

Review Comment:
   No a single group will always be a single Table in the UDF call still, the 
Python side will collect all batches for a stream into a Table if using the 
Table API



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