From 459be3ac29124ef7a25169254ccfe43a2ee8316a Mon Sep 17 00:00:00 2001
From: sqyyeah <948885883@qq.com>
Date: Sat, 29 Aug 2020 18:33:15 +0800
Subject: [PATCH] update refreshmatviews

---
 src/gausskernel/optimizer/commands/matview.cpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/gausskernel/optimizer/commands/matview.cpp b/src/gausskernel/optimizer/commands/matview.cpp
index 19fcb0be2..1cd6b07c3 100644
--- a/src/gausskernel/optimizer/commands/matview.cpp
+++ b/src/gausskernel/optimizer/commands/matview.cpp
@@ -166,10 +166,9 @@ void ExecRefreshMatView(const RefreshMatViewStmt* stmt, const char* queryString,
 
     tableSpace = matviewRel->rd_rel->reltablespace;
 
-    heap_close(matviewRel, NoLock);
-
     /* Create the transient table that will receive the regenerated data. */
     OIDNewHeap = make_new_heap(matviewOid, tableSpace, ExclusiveLock);
+    LockRelationOid(OIDNewHeap, AccessExclusiveLock);
     dest = CreateTransientRelDestReceiver(OIDNewHeap);
     /*
      * Now lock down security-restricted operations.
@@ -183,9 +182,12 @@ void ExecRefreshMatView(const RefreshMatViewStmt* stmt, const char* queryString,
     t_thrd.storage_cxt.EnlargeDeadlockTimeout = true;
     LockRelationOid(matviewOid, AccessExclusiveLock);
     refresh_by_heap_swap(matviewOid, OIDNewHeap);
+
     if (!stmt->skipData)
         pgstat_count_heap_insert(matviewRel, processed);
 
+    heap_close(matviewRel, NoLock);
+
     /* Roll back any GUC changes */
     AtEOXact_GUC(false, save_nestlevel);