Github user dima-asana commented on a diff in the pull request: https://github.com/apache/spark/pull/22759#discussion_r239577117 --- Diff: sql/core/src/test/scala/org/apache/spark/sql/test/DataFrameReaderWriterSuite.scala --- @@ -542,6 +551,35 @@ class DataFrameReaderWriterSuite extends QueryTest with SharedSQLContext with Be } } + test("parquet - column nullability -- write only") { + val schema = StructType( + StructField("cl1", IntegerType, nullable = false) :: --- End diff -- fixed
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