From 712a38a2f5b502725c76bf91b5daf1e105daed4c Mon Sep 17 00:00:00 2001
From: Onder Kalaci <onderkalaci@gmail.com>
Date: Thu, 25 Aug 2022 11:19:57 +0200
Subject: [PATCH] w

---
 src/backend/distributed/commands/table.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/backend/distributed/commands/table.c b/src/backend/distributed/commands/table.c
index d6a4ea5a2..e119b21ef 100644
--- a/src/backend/distributed/commands/table.c
+++ b/src/backend/distributed/commands/table.c
@@ -162,6 +162,13 @@ PreprocessDropTableStmt(Node *node, const char *queryString,
 			LockColocationId(cacheEntry->colocationId, ShareLock);
 		}
 
+		/*
+		 * Invalidate foreign key cache if the table involved in any foreign key. We'd normally  */
+		if ((TableReferenced(relationId) || TableReferencing(relationId)))
+		{
+			MarkInvalidateForeignKeyGraph();
+		}
+
 		/* we're only interested in partitioned and mx tables */
 		if (!ShouldSyncTableMetadata(relationId) || !PartitionedTable(relationId))
 		{