Github user sureshthalamati commented on a diff in the pull request:
https://github.com/apache/spark/pull/12904#discussion_r62444274
--- Diff:
sql/core/src/test/scala/org/apache/spark/sql/execution/datasources/csv/CSVSuite.scala
---
@@ -555,4 +558,37 @@ class CSVSuite extends QueryTest with SharedSQLContext
with SQLTestUtils {
assert(numbers.count() == 8)
}
+
+ test("load data with empty quoted string fields.") {
+ val results = sqlContext
+ .read
+ .format("csv")
+ .options(Map(
+ "header" -> "true",
+ "nullValue" -> null,
--- End diff --
If nullValue is not set it will return empty string for null values by
default. The reason I set it explicitly is to make sure my fix is working.
Before my fix it was retruning null for the empty quoted string , and empty
string for null values by default.
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