From f1d804180b40899979ebed5f1c2c9222dbeea666 Mon Sep 17 00:00:00 2001
From: Marco Slot <marco.slot@gmail.com>
Date: Wed, 31 May 2017 11:15:21 +0200
Subject: [PATCH] Don't take a table lock in
 ForeignConstraintGetReferencedTableId

---
 src/backend/distributed/master/master_stage_protocol.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/backend/distributed/master/master_stage_protocol.c b/src/backend/distributed/master/master_stage_protocol.c
index cf492bc02..fae23b171 100644
--- a/src/backend/distributed/master/master_stage_protocol.c
+++ b/src/backend/distributed/master/master_stage_protocol.c
@@ -763,9 +763,8 @@ ForeignConstraintGetReferencedTableId(char *queryString)
 		if (constraint->contype == CONSTR_FOREIGN)
 		{
 			RangeVar *referencedTable = constraint->pktable;
-			LOCKMODE lockmode = AlterTableGetLockLevel(foreignConstraintStmt->cmds);
 
-			return RangeVarGetRelid(referencedTable, lockmode,
+			return RangeVarGetRelid(referencedTable, NoLock,
 									foreignConstraintStmt->missing_ok);
 		}
 	}