[GitHub] [spark] hvanhovell commented on a diff in pull request #38192: [SPARK-40737][CONNECT] Add basic support for DataFrameWriter

[GitBox <gi...@apache.org>]

hvanhovell commented on code in PR #38192:
URL: https://github.com/apache/spark/pull/38192#discussion_r992201281


##########
connector/connect/src/main/scala/org/apache/spark/sql/connect/command/SparkConnectCommandPlanner.scala:
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@@ -24,10 +24,16 @@ import com.google.common.collect.{Lists, Maps}
 import org.apache.spark.annotation.{Since, Unstable}
 import org.apache.spark.api.python.{PythonEvalType, SimplePythonFunction}
 import org.apache.spark.connect.proto
-import org.apache.spark.sql.SparkSession
+import org.apache.spark.connect.proto.WriteOperation
+import org.apache.spark.sql.{Dataset, SparkSession}
+import org.apache.spark.sql.connect.planner.SparkConnectPlanner
 import org.apache.spark.sql.execution.python.UserDefinedPythonFunction
 import org.apache.spark.sql.types.StringType
 
+final case class InvalidCommandInput(
+    private val message: String = "",
+    private val cause: Throwable = None.orNull)

Review Comment:
   use `null`?



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