HeartSaVioR commented on a change in pull request #31593:
URL: https://github.com/apache/spark/pull/31593#discussion_r579584803
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File path: sql/core/src/main/scala/org/apache/spark/sql/DataFrameReader.scala
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@@ -73,8 +73,10 @@ class DataFrameReader private[sql](sparkSession:
SparkSession) extends Logging {
* @since 1.4.0
*/
def schema(schema: StructType): DataFrameReader = {
- val replaced =
CharVarcharUtils.failIfHasCharVarchar(schema).asInstanceOf[StructType]
- this.userSpecifiedSchema = Option(replaced)
+ if (schema != null) {
Review comment:
I'd also prefer not allowing null, but no strong voice. If we'd like to
allow null, probably ideal to clearly define the behavior of null rather than
leaving it as "undefined behavior".
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