Github user MaxGekk commented on a diff in the pull request: https://github.com/apache/spark/pull/20959#discussion_r180981947 --- Diff: sql/core/src/test/scala/org/apache/spark/sql/execution/datasources/csv/CSVSuite.scala --- @@ -1279,4 +1278,64 @@ class CSVSuite extends QueryTest with SharedSQLContext with SQLTestUtils { Row("0,2013-111-11 12:13:14") :: Row(null) :: Nil ) } + + val sampledTestData = (row: Row) => { --- End diff -- I have to define it as `val` because `def` contains a reference to outer class `CSVSuite` and the lambda inside of `map(...)` becomes not serializable.
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