cloud-fan commented on a change in pull request #33441:
URL: https://github.com/apache/spark/pull/33441#discussion_r677422917



##########
File path: 
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/FileFormat.scala
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@@ -163,6 +163,12 @@ trait FileFormat {
    * By default all data types are supported.
    */
   def supportDataType(dataType: DataType): Boolean = true
+
+
+  /**
+   * Check whether target schema field name is valid.

Review comment:
       can we follow the doc of the method above?




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