beliefer commented on code in PR #43710:
URL: https://github.com/apache/spark/pull/43710#discussion_r1386220959


##########
sql/core/src/test/scala/org/apache/spark/sql/execution/datasources/xml/XmlSuite.scala:
##########
@@ -30,12 +30,13 @@ import org.apache.commons.lang3.exception.ExceptionUtils
 import org.apache.hadoop.conf.Configuration
 import org.apache.hadoop.io.{LongWritable, Text}
 import org.apache.hadoop.io.compress.GzipCodec
-

Review Comment:
   Please revert it.



##########
sql/core/src/test/scala/org/apache/spark/sql/execution/datasources/xml/XmlSuite.scala:
##########
@@ -30,12 +30,13 @@ import org.apache.commons.lang3.exception.ExceptionUtils
 import org.apache.hadoop.conf.Configuration
 import org.apache.hadoop.io.{LongWritable, Text}
 import org.apache.hadoop.io.compress.GzipCodec
-
 import org.apache.spark.SparkException
+

Review Comment:
   ditto.



##########
sql/catalyst/src/main/scala/org/apache/spark/sql/errors/QueryCompilationErrors.scala:
##########
@@ -3805,4 +3805,11 @@ private[sql] object QueryCompilationErrors extends 
QueryErrorsBase with Compilat
       errorClass = "DATA_SOURCE_ALREADY_EXISTS",
       messageParameters = Map("provider" -> name))
   }
+
+  def xmlRowTagRequiredError(optionName: String): Throwable = {
+    new AnalysisException(
+      errorClass = "XML_ROW_TAG_OPTION_REQUIRED",
+      messageParameters = Map("rowTag" -> optionName)

Review Comment:
   ```suggestion
         messageParameters = Map("rowTag" -> toSQLId(optionName))
   ```



##########
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/xml/XmlOptions.scala:
##########
@@ -66,7 +66,11 @@ private[sql] class XmlOptions(
 
   val compressionCodec = 
parameters.get(COMPRESSION).map(CompressionCodecs.getCodecClassName)
   val rowTagOpt = parameters.get(XmlOptions.ROW_TAG).map(_.trim)
-  require(!rowTagRequired || rowTagOpt.isDefined, s"'${XmlOptions.ROW_TAG}' 
option is required.")
+
+  if (rowTagRequired && rowTagOpt.isEmpty) {
+    throw QueryCompilationErrors.xmlRowTagRequiredError(XmlOptions.ROW_TAG)

Review Comment:
   Because `val rowTag = rowTagOpt.getOrElse(XmlOptions.DEFAULT_ROW_TAG)`, do 
we really need throw the error?



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