Repository: spark
Updated Branches:
  refs/heads/master c9c89c31b -> c686b7dd4


[SPARK-2968][SQL] Fix nullabilities of Explode.

Output nullabilities of `Explode` could be detemined by 
`ArrayType.containsNull` or `MapType.valueContainsNull`.

Author: Takuya UESHIN <[email protected]>

Closes #1888 from ueshin/issues/SPARK-2968 and squashes the following commits:

d128c95 [Takuya UESHIN] Fix nullability of Explode.


Project: http://git-wip-us.apache.org/repos/asf/spark/repo
Commit: http://git-wip-us.apache.org/repos/asf/spark/commit/c686b7dd
Tree: http://git-wip-us.apache.org/repos/asf/spark/tree/c686b7dd
Diff: http://git-wip-us.apache.org/repos/asf/spark/diff/c686b7dd

Branch: refs/heads/master
Commit: c686b7dd4668b5e9fc3177f15edeae3446d2e634
Parents: c9c89c3
Author: Takuya UESHIN <[email protected]>
Authored: Mon Aug 11 20:18:03 2014 -0700
Committer: Michael Armbrust <[email protected]>
Committed: Mon Aug 11 20:18:03 2014 -0700

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 .../apache/spark/sql/catalyst/expressions/generators.scala   | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)
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http://git-wip-us.apache.org/repos/asf/spark/blob/c686b7dd/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/generators.scala
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diff --git 
a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/generators.scala
 
b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/generators.scala
index 3d41acb..e99c5b4 100644
--- 
a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/generators.scala
+++ 
b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/generators.scala
@@ -86,19 +86,19 @@ case class Explode(attributeNames: Seq[String], child: 
Expression)
     (child.dataType.isInstanceOf[ArrayType] || 
child.dataType.isInstanceOf[MapType])
 
   private lazy val elementTypes = child.dataType match {
-    case ArrayType(et, _) => et :: Nil
-    case MapType(kt,vt, _) => kt :: vt :: Nil
+    case ArrayType(et, containsNull) => (et, containsNull) :: Nil
+    case MapType(kt, vt, valueContainsNull) => (kt, false) :: (vt, 
valueContainsNull) :: Nil
   }
 
   // TODO: Move this pattern into Generator.
   protected def makeOutput() =
     if (attributeNames.size == elementTypes.size) {
       attributeNames.zip(elementTypes).map {
-        case (n, t) => AttributeReference(n, t, nullable = true)()
+        case (n, (t, nullable)) => AttributeReference(n, t, nullable)()
       }
     } else {
       elementTypes.zipWithIndex.map {
-        case (t, i) => AttributeReference(s"c_$i", t, nullable = true)()
+        case ((t, nullable), i) => AttributeReference(s"c_$i", t, nullable)()
       }
     }
 


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