Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/17277#discussion_r105805867
--- Diff:
sql/hive/src/test/scala/org/apache/spark/sql/hive/PartitionProviderCompatibilitySuite.scala
---
@@ -316,6 +316,20 @@ class PartitionProviderCompatibilitySuite
}
}
}
+
+ test(s"SPARK-19887 partition value is null - partition management
$enabled") {
+ withTable("test") {
+ Seq((1, "p", 1), (2, null, 2)).toDF("a", "b", "c")
+ .write.partitionBy("b", "c").saveAsTable("test")
+ checkAnswer(spark.table("test"),
+ Row(1, "p", 1) :: Row(2, null, 2) :: Nil)
+
+ Seq((3, null: String, 3)).toDF("a", "b", "c")
+ .write.mode("append").partitionBy("b", "c").saveAsTable("test")
+ checkAnswer(spark.table("test"),
+ Row(1, "p", 1) :: Row(2, null, 2) :: Row(3, null, 3) :: Nil)
+ }
+ }
--- End diff --
no they don't work. `ALTER TABLE xxx ADD PARTITION(A=null)`, we will
interpret `null` as a string instead of a null value. We should fix it in the
follow-up.
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