diff --git a/src/storage/ob_i_table.cpp b/src/storage/ob_i_table.cpp
index 9c9cc63102..867e4d8d7d 100644
--- a/src/storage/ob_i_table.cpp
+++ b/src/storage/ob_i_table.cpp
@@ -74,7 +74,8 @@ const char* ObITable::table_type_name_[] =
   "DDL_MERGE_CO",
   "DDL_MERGE_CG",
   "DDL_MEM_CO",
-  "DDL_MEM_CG"
+  "DDL_MEM_CG",
+  "MDS"
 };
 
 uint64_t ObITable::TableKey::hash() const
diff --git a/src/storage/ob_i_table.h b/src/storage/ob_i_table.h
index 64a275d7fe..ce07c83ab1 100644
--- a/src/storage/ob_i_table.h
+++ b/src/storage/ob_i_table.h
@@ -101,6 +101,7 @@ public:
     DDL_MERGE_CG_SSTABLE = 22, // used for column store ddl, for normal cg sstable, rowkey cg not supported
     DDL_MEM_CO_SSTABLE = 23,
     DDL_MEM_CG_SSTABLE = 24,
+    MDS_SSTABLE = 25,
     // < add new sstable before here, See is_sstable()
 
     MAX_TABLE_TYPE