Add tensor value type

1 files changed, 2 insertions, 1 deletions

diff --git a/vespajlib/src/main/java/com/yahoo/tensor/functions/ReduceJoin.java b/vespajlib/src/main/java/com/yahoo/tensor/functions/ReduceJoin.java
index b268e33b418..db950e6c8b9 100644
--- a/vespajlib/src/main/java/com/yahoo/tensor/functions/ReduceJoin.java
+++ b/vespajlib/src/main/java/com/yahoo/tensor/functions/ReduceJoin.java
@@ -268,7 +268,8 @@ public class ReduceJoin extends CompositeTensorFunction {
     }
 
     private TensorType dimensionsInCommon(IndexedTensor a, IndexedTensor b) {
-        TensorType.Builder builder = new TensorType.Builder();
+        TensorType.Builder builder = new TensorType.Builder(TensorType.Value.largestOf(a.type().valueType(),
+                                                                                       b.type().valueType()));
         for (TensorType.Dimension aDim : a.type().dimensions()) {
             for (TensorType.Dimension bDim : b.type().dimensions()) {
                 if (aDim.name().equals(bDim.name())) {