cloud-fan commented on a change in pull request #31326:
URL: https://github.com/apache/spark/pull/31326#discussion_r563954119



##########
File path: 
sql/core/src/test/scala/org/apache/spark/sql/execution/command/DDLSuite.scala
##########
@@ -1734,9 +1735,8 @@ abstract class DDLSuite extends QueryTest with 
SQLTestUtils {
 
     // null partition values
     createTablePartition(catalog, Map("a" -> null, "b" -> null), tableIdent)
-    val nullPartValue = if (isUsingHiveMetastore) "__HIVE_DEFAULT_PARTITION__" 
else null
     assert(catalog.listPartitions(tableIdent).map(_.spec).toSet ==
-      Set(Map("a" -> nullPartValue, "b" -> nullPartValue)))
+      Set(Map("a" -> "__HIVE_DEFAULT_PARTITION__", "b" -> 
"__HIVE_DEFAULT_PARTITION__")))

Review comment:
       shall we do it in master branch as well?

##########
File path: sql/core/src/test/scala/org/apache/spark/sql/SQLQuerySuite.scala
##########
@@ -3575,15 +3575,6 @@ class SQLQuerySuite extends QueryTest with 
SharedSparkSession with AdaptiveSpark
       }
     })
   }
-
-  test("SPARK-33591: null as a partition value") {
-    val t = "part_table"
-    withTable(t) {
-      sql(s"CREATE TABLE $t (col1 INT, p1 STRING) USING PARQUET PARTITIONED BY 
(p1)")
-      sql(s"INSERT INTO TABLE $t PARTITION (p1 = null) SELECT 0")
-      checkAnswer(sql(s"SELECT * FROM $t"), Row(0, null))
-    }

Review comment:
       A simpler way is to test DROP PARTITION here.

##########
File path: sql/core/src/test/scala/org/apache/spark/sql/SQLQuerySuite.scala
##########
@@ -3575,15 +3575,6 @@ class SQLQuerySuite extends QueryTest with 
SharedSparkSession with AdaptiveSpark
       }
     })
   }
-
-  test("SPARK-33591: null as a partition value") {
-    val t = "part_table"
-    withTable(t) {
-      sql(s"CREATE TABLE $t (col1 INT, p1 STRING) USING PARQUET PARTITIONED BY 
(p1)")
-      sql(s"INSERT INTO TABLE $t PARTITION (p1 = null) SELECT 0")
-      checkAnswer(sql(s"SELECT * FROM $t"), Row(0, null))
-    }

Review comment:
       OK, then please forward port the new test to branch-3.1, as I used this 
smaller change while backporting.




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