From ab6e97cee6cd2c27cc65009e9ca8ee087a67fb27 Mon Sep 17 00:00:00 2001
From: "selva.govindarajan" <selva.govindarajan@dremio.com>
Date: Wed, 28 Jan 2026 21:30:36 -0800
Subject: [PATCH] ARROW-XXXX: [Java] Make StructVector.reallocValidityBuffer
 protected

Changes the access modifier of `reallocValidityBuffer` from package-private to protected.

This allows subclasses to reallocate the validity buffer independently of the struct elements. Previously,
expanding the validity buffer required a full vector reallocation, which could cause an `OversizedAllocationException`
if the child data vectors were already near their capacity.
---
 .../main/java/org/apache/arrow/vector/complex/StructVector.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/vector/src/main/java/org/apache/arrow/vector/complex/StructVector.java b/vector/src/main/java/org/apache/arrow/vector/complex/StructVector.java
index ca5f572034..1d122c5630 100644
--- a/vector/src/main/java/org/apache/arrow/vector/complex/StructVector.java
+++ b/vector/src/main/java/org/apache/arrow/vector/complex/StructVector.java
@@ -528,7 +528,7 @@ public void reAlloc() {
     super.reAlloc();
   }
 
-  private void reallocValidityBuffer() {
+  protected void reallocValidityBuffer() {
     final int currentBufferCapacity = checkedCastToInt(validityBuffer.capacity());
     long newAllocationSize = getNewAllocationSize(currentBufferCapacity);