MaxGekk commented on code in PR #44464:
URL: https://github.com/apache/spark/pull/44464#discussion_r1438075440


##########
connector/connect/common/src/main/scala/org/apache/spark/sql/connect/client/GrpcExceptionConverter.scala:
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@@ -230,55 +230,75 @@ private[client] object GrpcExceptionConverter {
         params.cause)),
     errorConstructor(params =>
       new NoSuchTableException(params.errorClass.orNull, 
params.messageParameters, params.cause)),
-    errorConstructor[NumberFormatException](params =>
+    errorConstructor(params =>
       new SparkNumberFormatException(
-        params.message,
-        params.errorClass,
+        params.errorClass.orNull,
         params.messageParameters,
         params.queryContext)),
+    errorConstructor[NumberFormatException](params =>

Review Comment:
   Before this PR, we converted Java exception to Spark exception at the client 
side by passing the message as is (error class and message parameters was null 
or empty) like:  `NumberFormatException("invalid format 9hh99")` -> 
`SparkNumberFormatException("invalid format 9hh99", errorClass = null)`. 
   
   After the changes, the conversion still exists but I put the original 
message to a parameter:
   `NumberFormatException("invalid format 9hh99")` -> 
`SparkNumberFormatException(errorClass = "_LEGACY_ERROR_TEMP_3104", 
messageParameters = Map("message" -> "invalid format 9hh99"))`
    



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