Fix valueCount when loading NullVector (apache#1)

We should set `valueCount` when loading `NullVector`. Unfortunately there's no `nullCount` field.
sunchao · Mar 17, 2023 · eb033fd · eb033fd
1 parent 8abb941
commit eb033fd
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/java/vector/src/main/java/org/apache/arrow/vector/NullVector.java b/java/vector/src/main/java/org/apache/arrow/vector/NullVector.java
@@ -192,6 +192,7 @@ public List<FieldVector> getChildrenFromFields() {
   @Override
   public void loadFieldBuffers(ArrowFieldNode fieldNode, List<ArrowBuf> ownBuffers) {
     Preconditions.checkArgument(ownBuffers.isEmpty(), "Null vector has no buffers");
+    this.valueCount = fieldNode.getLength();
   }
 
   @Override