ajithme commented on a change in pull request #24762: [SPARK-27907][SQL]
HiveUDAF with 0 rows throw NPE when try to serialize
URL: https://github.com/apache/spark/pull/24762#discussion_r289523298
##########
File path:
sql/hive/src/test/scala/org/apache/spark/sql/hive/execution/HiveUDAFSuite.scala
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@@ -149,6 +149,14 @@ class HiveUDAFSuite extends QueryTest with
TestHiveSingleton with SQLTestUtils {
}
}
}
+
+ test("HiveUDAF with 0 rows throws NPE") {
+ sql("create table abc(a int)")
+ sql("insert into abc values (1)")
+ sql("insert into abc values (2)")
+ sql("select histogram_numeric(a,2) from abc").show
Review comment:
Just to show the effect only when query return 0 rows, i am ok to drop it,
they are not nessessary
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