Github user HyukjinKwon commented on a diff in the pull request:
https://github.com/apache/spark/pull/11194#discussion_r52841904
--- Diff:
sql/core/src/test/scala/org/apache/spark/sql/execution/datasources/csv/CSVSuite.scala
---
@@ -387,4 +387,16 @@ class CSVSuite extends QueryTest with SharedSQLContext
with SQLTestUtils {
verifyCars(carsCopy, withHeader = true)
}
}
+
+ test("Schema inference correctly identifies the datatype when data is
sparse.") {
+ val df = sqlContext.read
+ .format("csv")
+ .option("header", "true")
+ .option("inferSchema", "true")
+ .load(testFile(simpleSparseFile))
+
+ assert(
+ df.schema.fields.map{field => field.dataType}.deep ==
--- End diff --
A little nit (maybe only for me) but how about using `()` instead of `{}`?
I see the `{}` has been used with some indentations and new lines in Spark
codes.
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