Github user maropu commented on a diff in the pull request: https://github.com/apache/spark/pull/10427#discussion_r48250381 --- Diff: sql/core/src/test/scala/org/apache/spark/sql/jdbc/JDBCSuite.scala --- @@ -180,14 +181,23 @@ class JDBCSuite extends SparkFunSuite } test("SELECT * WHERE (simple predicates)") { - assert(stripSparkFilter(sql("SELECT * FROM foobar WHERE THEID < 1")).collect().size == 0) - assert(stripSparkFilter(sql("SELECT * FROM foobar WHERE THEID != 2")).collect().size == 2) - assert(stripSparkFilter(sql("SELECT * FROM foobar WHERE THEID = 1")).collect().size == 1) - assert(stripSparkFilter(sql("SELECT * FROM foobar WHERE NAME = 'fred'")).collect().size == 1) - assert(stripSparkFilter(sql("SELECT * FROM foobar WHERE NAME > 'fred'")).collect().size == 2) - assert(stripSparkFilter(sql("SELECT * FROM foobar WHERE NAME != 'fred'")).collect().size == 2) - assert(stripSparkFilter(sql("SELECT * FROM nulltypes WHERE A IS NULL")).collect().size == 1) - assert(stripSparkFilter(sql("SELECT * FROM nulltypes WHERE A IS NOT NULL")).collect().size == 0) + def checkPlan(df: DataFrame): DataFrame = { + val parentPlan = df.queryExecution.executedPlan + // Check if SparkPlan Filter is removed in a physical plan and + // the plan only has PhysicalRDD to scan JDBCRelation. --- End diff -- We need the wrap for scaladoc though, we also need it just for comments? There are the comments that have no wrap for spark classes; https://github.com/apache/spark/blob/master/sql/core/src/main/scala/org/apache/spark/sql/DataFrame.scala#L558
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