From 2f8b6410ce5de2ed8a9a5359ae2d0c3c136dc1b6 Mon Sep 17 00:00:00 2001
From: skylhd <dickylhd@gmail.com>
Date: Wed, 19 Jul 2023 02:42:28 +0000
Subject: [PATCH] [BUGFIX] fix read lob alloc memory failed

---
 src/storage/access/ob_multiple_merge.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/storage/access/ob_multiple_merge.cpp b/src/storage/access/ob_multiple_merge.cpp
index 5fb661d9a0..374cd9ceb0 100644
--- a/src/storage/access/ob_multiple_merge.cpp
+++ b/src/storage/access/ob_multiple_merge.cpp
@@ -1342,6 +1342,8 @@ bool ObMultipleMerge::need_read_lob_columns(const blocksstable::ObDatumRow &row)
 int ObMultipleMerge::handle_lob_before_fuse_row()
 {
   int ret = OB_SUCCESS;
+  // reuse lob locator every row because output filter shared common expr is already fixed
+  reuse_lob_locator();
   // Notice: should not  change behavior dynamicly by min cluster version:
   // for example, while running in 4.0 compat mode, the min cluster version changes to 4.1
   // but lob_locator_helper is not initialized.