From c162755cc516f9f19827e420c34daa0773b11e9f Mon Sep 17 00:00:00 2001
From: Onur Tirtir <onurcantirtir@gmail.com>
Date: Thu, 13 Feb 2020 16:11:40 +0300
Subject: [PATCH] enable local execution for TRUNCATE command on distributed &
 reference tables

---
 src/backend/distributed/master/master_truncate.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/backend/distributed/master/master_truncate.c b/src/backend/distributed/master/master_truncate.c
index d6d4d56e0..795b822a1 100644
--- a/src/backend/distributed/master/master_truncate.c
+++ b/src/backend/distributed/master/master_truncate.c
@@ -73,7 +73,15 @@ citus_truncate_trigger(PG_FUNCTION_ARGS)
 	{
 		List *taskList = TruncateTaskList(relationId);
 
-		ExecuteUtilityTaskListWithoutResults(taskList);
+		/*
+		 * If it is a local placement of a distributed table or a reference table,
+		 * then execute TRUNCATE command locally.
+		 */
+		bool localExecutionSupported = true;
+
+		UseCoordinatedTransaction();
+
+		ExecuteUtilityTaskListWithoutResults(taskList, localExecutionSupported);
 	}
 
 	PG_RETURN_DATUM(PointerGetDatum(NULL));