Github user mgaido91 commented on a diff in the pull request: https://github.com/apache/spark/pull/22638#discussion_r222945036 --- Diff: sql/core/src/test/scala/org/apache/spark/sql/DatasetCacheSuite.scala --- @@ -127,16 +127,16 @@ class DatasetCacheSuite extends QueryTest with SharedSQLContext with TimeLimits } test("cache UDF result correctly") { - val expensiveUDF = udf({x: Int => Thread.sleep(5000); x}) - val df = spark.range(0, 10).toDF("a").withColumn("b", expensiveUDF($"a")) + val expensiveUDF = udf({x: Int => Thread.sleep(2000); x}) --- End diff -- mmh...since we fail after 2 seconds we may pass this even in case it doesn't work. Shall we put it to 3? or 2500 at least?
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