heyihong commented on code in PR #44468:
URL: https://github.com/apache/spark/pull/44468#discussion_r1437588178


##########
connector/connect/server/src/main/scala/org/apache/spark/sql/connect/utils/ErrorUtils.scala:
##########
@@ -181,7 +182,12 @@ private[connect] object ErrorUtils extends Logging {
         }
         val errorClass = e.getErrorClass
         if (errorClass != null && errorClass.nonEmpty) {
-          errorInfo.putMetadata("errorClass", errorClass)
+          val messageParameters = JsonMethods.compact(
+            
JsonMethods.render(map2jvalue(e.getMessageParameters.asScala.toMap)))
+          if (messageParameters.length <= maxMetadataSize) {
+            errorInfo.putMetadata("errorClass", errorClass)
+            errorInfo.putMetadata("messageParameters", messageParameters)

Review Comment:
   Make sense. Though the message parameters in error info metadata won't be 
used in most cases because of error enrichment. Also, we won't get error class 
and message parameters if  message parameters is too large



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