Github user HyukjinKwon commented on a diff in the pull request:
https://github.com/apache/spark/pull/16928#discussion_r102366771
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/csv/UnivocityParser.scala
---
@@ -45,24 +46,41 @@ private[csv] class UnivocityParser(
// A `ValueConverter` is responsible for converting the given value to a
desired type.
private type ValueConverter = String => Any
+ private val corruptFieldIndex =
schema.getFieldIndex(options.columnNameOfCorruptRecord)
+ corruptFieldIndex.foreach { corrFieldIndex =>
+ require(schema(corrFieldIndex).dataType == StringType,
+ "A field for corrupt records must have a string type")
+ require(schema(corrFieldIndex).nullable, "A field for corrupt must be
nullable")
+ }
+
+ private val inputSchema = StructType(schema.filter(_.name !=
options.columnNameOfCorruptRecord))
+ CSVUtils.verifySchema(inputSchema)
--- End diff --
It seems `verifySchema` is being called duplicatedly
(https://github.com/apache/spark/pull/16928/files/4eed4a4bea927c6365dac2e2734c895a0a1a0026#diff-a549ac2e19ee7486911e2e6403444d9dR99)
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