[SPARK-24305][SQL][FOLLOWUP] Making fields used in eval lazy-evaluate…

…d (Concat, MapConcat)
apache · Jul 17, 2018 · 872ef99 · 872ef99
1 parent a0abc25
commit 872ef99
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/...alyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/collectionOperations.scala b/...alyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/collectionOperations.scala
@@ -516,7 +516,7 @@ case class MapConcat(children: Seq[Expression]) extends ComplexTypeMergingExpres
     }
   }
 
-  override def dataType: MapType = {
+  @transient override lazy val dataType: MapType = {
     if (children.isEmpty) {
       MapType(StringType, StringType)
     } else {
@@ -2224,7 +2224,7 @@ case class Concat(children: Seq[Expression]) extends ComplexTypeMergingExpressio
     }
   }
 
-  override def dataType: DataType = {
+  @transient override lazy val dataType: DataType = {
     if (children.isEmpty) {
       StringType
     } else {