Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/21296#discussion_r187675312
--- Diff:
sql/core/src/test/scala/org/apache/spark/sql/execution/datasources/csv/CSVSuite.scala
---
@@ -1322,4 +1322,31 @@ class CSVSuite extends QueryTest with
SharedSQLContext with SQLTestUtils with Te
val sampled = spark.read.option("inferSchema",
true).option("samplingRatio", 1.0).csv(ds)
assert(sampled.count() == ds.count())
}
+
+ test("SPARK-24244: Select a little of many columns") {
--- End diff --
what does this test?
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