Github user HyukjinKwon commented on a diff in the pull request:
https://github.com/apache/spark/pull/15767#discussion_r86680644
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/csv/CSVInferSchema.scala
---
@@ -232,7 +232,11 @@ private[csv] object CSVTypeCast {
nullable: Boolean = true,
options: CSVOptions = CSVOptions()): Any = {
- if (nullable && datum == options.nullValue) {
+ // datum can be null if the number of fields found is less than the
length of the schema
+ if (datum == options.nullValue || datum == null) {
+ if (!nullable) {
+ throw new RuntimeException("null value found but the field is not
nullable.")
--- End diff --
Sure, I can. Will try to make this neat up.
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