Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/20894#discussion_r191826405
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/DataFrameReader.scala ---
@@ -499,6 +503,11 @@ class DataFrameReader private[sql](sparkSession:
SparkSession) extends Logging {
StructType(schema.filterNot(_.name ==
parsedOptions.columnNameOfCorruptRecord))
val linesWithoutHeader: RDD[String] = maybeFirstLine.map { firstLine =>
+ if (!parsedOptions.enforceSchema) {
--- End diff --
What does this mean? It sounds like we already decide to issue a warning
log message even if `enforceSchema` is true.
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