dongjoon-hyun commented on a change in pull request #31296:
URL: https://github.com/apache/spark/pull/31296#discussion_r562949231
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File path: sql/core/src/test/scala/org/apache/spark/sql/DatasetSuite.scala
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@@ -2007,6 +2007,28 @@ class DatasetSuite extends QueryTest
checkAnswer(withUDF, Row(Row(1), null, null) :: Row(Row(1), null, null) ::
Nil)
}
+
+ test("SPARK-34205: Pipe Dataset") {
+ assume(TestUtils.testCommandAvailable("cat"))
+
+ val nums = spark.range(4)
+ val piped = nums.pipe("cat").toDF
+
+ checkAnswer(piped, Row("0") :: Row("1") :: Row("2") :: Row("3") :: Nil)
+
+ val piped2 = nums.pipe("wc -l").toDF.collect()
+ assert(piped2.size == 2)
+ assert(piped2(0).getString(0).trim == "2")
+ assert(piped2(1).getString(0).trim == "2")
+ }
+
+ test("SPARK-34205: pipe Dataset with empty partition") {
Review comment:
Thank you for making this sure!
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