DRILL-1265: Drill may incorrectly return null when evaluates an expression of repeated list. The fix is to correctly set offsets vectors for repeated list vector.

1 files changed, 2 insertions, 1 deletions

diff --git a/exec/java-exec/src/main/java/org/apache/drill/exec/vector/complex/RepeatedListVector.java b/exec/java-exec/src/main/java/org/apache/drill/exec/vector/complex/RepeatedListVector.java
index 00716cf0b..f903b0ca4 100644
--- a/exec/java-exec/src/main/java/org/apache/drill/exec/vector/complex/RepeatedListVector.java
+++ b/exec/java-exec/src/main/java/org/apache/drill/exec/vector/complex/RepeatedListVector.java
@@ -324,8 +324,9 @@ public class RepeatedListVector extends AbstractContainerVector implements Repea
       for(int i = holder.start; i < holder.end; i++, newIndex++){
         if(!vectorTransfer.copyValueSafe(i, newIndex)) return false;
       }
-      if(!this.to.offsets.getMutator().setSafe(to, newIndex)) return false;
+      if(!this.to.offsets.getMutator().setSafe(to + 1, newIndex)) return false;
 
+      this.to.lastSet++;
       return true;
     }