Github user ueshin commented on a diff in the pull request:
https://github.com/apache/spark/pull/19630#discussion_r149873412
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/RelationalGroupedDataset.scala ---
@@ -23,14 +23,15 @@ import scala.collection.JavaConverters._
import scala.language.implicitConversions
import org.apache.spark.annotation.InterfaceStability
+import org.apache.spark.api.python.PythonEvalType
import org.apache.spark.broadcast.Broadcast
import org.apache.spark.sql.catalyst.analysis.{Star, UnresolvedAlias,
UnresolvedAttribute, UnresolvedFunction}
import org.apache.spark.sql.catalyst.expressions._
import org.apache.spark.sql.catalyst.expressions.aggregate._
import org.apache.spark.sql.catalyst.plans.logical._
import org.apache.spark.sql.catalyst.util.toPrettySQL
import org.apache.spark.sql.execution.aggregate.TypedAggregateExpression
-import org.apache.spark.sql.execution.python.{PythonUDF, PythonUdfType}
+import org.apache.spark.sql.execution.python.{PythonUDF}
--- End diff --
We can remove the braces here.
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