Github user srowen commented on a diff in the pull request:
https://github.com/apache/spark/pull/15767#discussion_r86661526
--- 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 --
Nit: This could be `require(nullable, ...)` which would throw a better
exception, `IllegalArgumentException`, too. (Even NPE would be reasonable.) But
I don't feel strongly about it.
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at [email protected] or file a JIRA ticket
with INFRA.
---
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
