From 7f1a989a1fc76cd9631eed2675ffa41b6cee4bbe Mon Sep 17 00:00:00 2001
From: emkornfield <emkornfield@gmail.com>
Date: Thu, 11 Aug 2022 23:14:11 -0700
Subject: [PATCH] PARQUET-2172: [C++] Change field return type to const
 NodePtr&

---
 cpp/src/parquet/schema.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/cpp/src/parquet/schema.h b/cpp/src/parquet/schema.h
index 9e06040226b80..1c440b1133ef7 100644
--- a/cpp/src/parquet/schema.h
+++ b/cpp/src/parquet/schema.h
@@ -285,7 +285,7 @@ class PARQUET_EXPORT GroupNode : public Node {
 
   bool Equals(const Node* other) const override;
 
-  NodePtr field(int i) const { return fields_[i]; }
+  const NodePtr& field(int i) const { return fields_[i]; }
   // Get the index of a field by its name, or negative value if not found.
   // If several fields share the same name, it is unspecified which one
   // is returned.