update error message

rxin · Mar 31, 2015 · 3795c57 · 3795c57
1 parent ae7ac3e
commit 3795c57
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/complexTypes.scala b/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/complexTypes.scala
@@ -155,7 +155,8 @@ case class CreateStruct(children: Seq[NamedExpression]) extends Expression {
   override lazy val resolved: Boolean = childrenResolved
 
   override lazy val dataType: StructType = {
-    assert(resolved, s"CreateStruct is called with unresolved children: $children.")
+    assert(resolved,
+      s"CreateStruct contains unresolvable children: ${children.filterNot(_.resolved)}.")
     val fields = children.map { child =>
       StructField(child.name, child.dataType, child.nullable, child.metadata)
     }