revise static assert comment according to latest data structure

src/rootserver/ddl_task/ob_ddl_task.cpp

@@ -3263,7 +3263,7 @@ int ObDDLTaskRecordOperator::select_for_update(
   } else {
     SMART_VAR(ObMySQLProxy::MySQLResult, res) {
       sqlclient::ObMySQLResult *result = NULL;
-      if (OB_FAIL(sql_string.assign_fmt("SELECT status, execution_id FROM %s WHERE task_id = %lu FOR UPDATE NOWAIT",
+      if (OB_FAIL(sql_string.assign_fmt("SELECT status, execution_id FROM %s WHERE task_id = %lu FOR UPDATE",
           OB_ALL_DDL_TASK_STATUS_TNAME, task_id))) {
         LOG_WARN("assign sql string failed", K(ret), K(task_id), K(tenant_id));
       } else if (OB_FAIL(trans.read(res, tenant_id, sql_string.ptr()))) {

src/storage/tablet/ob_tablet.cpp

@@ -233,7 +233,7 @@ ObTablet::ObTablet()
     table_store_cache_()
 {
 #if defined(__x86_64__) && !defined(ENABLE_OBJ_LEAK_CHECK)
-  static_assert(sizeof(ObTablet) + sizeof(ObRowkeyReadInfo) <= 1672, "The size of ObTablet will affect the meta memory manager, and the necessity of adding new fields needs to be considered.");
+  static_assert(sizeof(ObTablet) + sizeof(ObRowkeyReadInfo) == 1616, "The size of ObTablet will affect the meta memory manager, and the necessity of adding new fields needs to be considered.");
 #endif
   MEMSET(memtables_, 0x0, sizeof(memtables_));
 }

src/storage/tablet/ob_tablet.h

@@ -795,7 +795,7 @@ private:
   int32_t version_;
   int32_t length_;
   volatile int64_t wash_score_;
-  ObTabletMdsData mds_data_;                                 // size: 440B, alignment: 8B
+  ObTabletMdsData mds_data_;                                 // size: 384B, alignment: 8B
   volatile int64_t ref_cnt_;
   ObTabletHandle next_tablet_guard_;                         // size: 56B, alignment: 8B
   ObTabletMeta tablet_meta_;                                 // size: 248, alignment: 8B