From 70d8e1fe973b12342afd2406d6402d6dccb00f4e Mon Sep 17 00:00:00 2001
From: Onur Tirtir <onurcantirtir@gmail.com>
Date: Thu, 13 Jan 2022 19:09:57 +0300
Subject: [PATCH] Assert that we will create indexes on shards via local
 execution (#5620)

---
 src/backend/distributed/commands/utility_hook.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/backend/distributed/commands/utility_hook.c b/src/backend/distributed/commands/utility_hook.c
index 520d7f7fd..4c79ec3e1 100644
--- a/src/backend/distributed/commands/utility_hook.c
+++ b/src/backend/distributed/commands/utility_hook.c
@@ -1201,6 +1201,15 @@ ExecuteDistributedDDLJob(DDLJob *ddlJob)
 			 * snapshots via adaptive executor.
 			 */
 			set_indexsafe_procflags();
+
+			/*
+			 * We should not have any CREATE INDEX commands go through the
+			 * local backend as we signaled other backends that this backend
+			 * is executing a "safe" index command (PROC_IN_SAFE_IC), which
+			 * is NOT true, we are only faking postgres based on the reasoning
+			 * given above.
+			 */
+			Assert(localExecutionSupported == false);
 #endif
 		}