Do not allocate memory for inner vectors in nullable map when creating transfer pair

siddharthteotia · yongyanw · commit d6bad111cfdd · 2018-03-24T08:23:40.000-07:00
diff --git a/java/vector/src/main/java/org/apache/arrow/vector/complex/StructVector.java b/java/vector/src/main/java/org/apache/arrow/vector/complex/StructVector.java
@@ -130,7 +130,7 @@ public TransferPair getTransferPair(BufferAllocator allocator) {
 
   @Override
   public TransferPair makeTransferPair(ValueVector to) {
-    return new NullableStructTransferPair(this, (StructVector) to, true);
+    return new NullableStructTransferPair(this, (StructVector) to, false);
   }
 
   @Override

Original file line number	Diff line number	Diff line change
`@@ -130,7 +130,7 @@ public TransferPair getTransferPair(BufferAllocator allocator) {`
`130`	`130`
`131`	`131`	`@Override`
`132`	`132`	`public TransferPair makeTransferPair(ValueVector to) {`
`133`		`- return new NullableStructTransferPair(this, (StructVector) to, true);`
	`133`	`+ return new NullableStructTransferPair(this, (StructVector) to, false);`
`134`	`134`	`}`
`135`	`135`
`136`	`136`	`@Override`