From 4a8ba2c87c525ffb0270129b38210baf72263966 Mon Sep 17 00:00:00 2001
From: Xing Guo <higuoxing@gmail.com>
Date: Thu, 11 Apr 2024 08:00:43 +0800
Subject: [PATCH] Add comment for the assignment.

---
 src/backend/distributed/utils/citus_depended_object.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/backend/distributed/utils/citus_depended_object.c b/src/backend/distributed/utils/citus_depended_object.c
index dc639b6e9..e54336e7d 100644
--- a/src/backend/distributed/utils/citus_depended_object.c
+++ b/src/backend/distributed/utils/citus_depended_object.c
@@ -483,7 +483,13 @@ AnyObjectViolatesOwnership(DropStmt *dropStmt)
 			Relation rel = NULL;
 			objectAddress = get_object_address(objectType, object,
 											   &rel, AccessShareLock, missingOk);
-			relation = rel;
+			/*
+			 * The object relation is qualified with volatile and its value is obtained from
+			 * get_object_address(). Unless we can qualify the corresponding parameter of
+			 * get_object_address() with volatile (this is a function defined in PostgreSQL),
+			 * we cannot get rid of this assignment.
+			 */
+                        relation = rel;
 
 			if (OidIsValid(objectAddress.objectId))
 			{