From 38b29a7593f4c8f1c55432c4e78f8e24cf9597bd Mon Sep 17 00:00:00 2001
From: Marco Slot <marco.slot@gmail.com>
Date: Thu, 10 Mar 2016 22:10:17 +0100
Subject: [PATCH] Use Row Exclusive Lock on distributed table

---
 src/backend/distributed/commands/multi_copy.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/backend/distributed/commands/multi_copy.c b/src/backend/distributed/commands/multi_copy.c
index c1c05d4d0..9267306ef 100644
--- a/src/backend/distributed/commands/multi_copy.c
+++ b/src/backend/distributed/commands/multi_copy.c
@@ -333,7 +333,7 @@ CitusCopyFrom(CopyStmt *copyStatement, char *completionTag)
 	compareFunction = ShardIntervalCompareFunction(partitionColumn, partitionMethod);
 
 	/* allocate column values and nulls arrays */
-	rel = heap_open(tableId, AccessShareLock);
+	rel = heap_open(tableId, RowExclusiveLock);
 	tupleDescriptor = RelationGetDescr(rel);
 	columnCount = tupleDescriptor->natts;
 	columnValues = palloc0(columnCount * sizeof(Datum));