not return error code when schedule config update task failed

src/observer/omt/ob_tenant_config.cpp

@@ -313,6 +313,7 @@ int ObTenantConfig::got_version(int64_t version, const bool remove_repeat)
       if ((ATOMIC_FAA(&update_task_.running_task_count_, 1) < 2)) {
         if (OB_FAIL(config_mgr_->schedule(update_task_, 0))) {
           LOG_WARN("schedule task failed", K_(tenant_id), K(ret));
+          ret = OB_SUCCESS; // if task reach 32 limit, it has chance to retry later
           ATOMIC_DEC(&update_task_.running_task_count_);
         } else {
           LOG_INFO("Schedule update tenant config task successfully!", K_(tenant_id));

src/sql/engine/expr/ob_expr_to_outfile_row.cpp

@@ -190,9 +190,9 @@ int ObExprToOutfileRow::to_outfile_str(const ObExpr &expr, ObEvalCtx &ctx, ObDat
         if (OB_SUCC(ret)) {
           char *res_buf = NULL;
           if (OB_ISNULL(res_buf = expr.get_str_res_mem(ctx, pos))) {
-            ret = OB_ALLOCATE_MEMORY_FAILED;
-            LOG_WARN("allocate memory failed", K(ret), K(pos));
-          } else {
+            ret = OB_ALLOCATE_MEMORY_FAILED;
+            LOG_WARN("allocate memory failed", K(ret), K(pos));
+          } else {
             MEMCPY(res_buf, buf, pos);
             expr_datum.set_string(res_buf, pos);
           }