Github user dongjoon-hyun commented on a diff in the pull request: https://github.com/apache/spark/pull/22597#discussion_r225004937 --- Diff: sql/core/src/test/scala/org/apache/spark/sql/execution/datasources/orc/OrcFilterSuite.scala --- @@ -383,4 +384,15 @@ class OrcFilterSuite extends OrcTest with SharedSQLContext { )).get.toString } } + + test("SPARK-25579 ORC PPD should support column names with dot") { + import testImplicits._ + + withTempDir { dir => + val path = new File(dir, "orc").getCanonicalPath + Seq((1, 2), (3, 4)).toDF("col.dot.1", "col.dot.2").write.orc(path) + val df = spark.read.orc(path).where("`col.dot.1` = 1 and `col.dot.2` = 2") + checkAnswer(stripSparkFilter(df), Row(1, 2)) --- End diff -- Like that test, this test also generates two ORC files with one row and test if PPD works.
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