diff --git a/inc/Maat_rule.h b/inc/Maat_rule.h
index d9f1d49..81d5419 100644
--- a/inc/Maat_rule.h
+++ b/inc/Maat_rule.h
@@ -155,6 +155,13 @@ enum MAAT_INIT_OPT
 };
 //return -1 if failed, return 0 on success;
 int Maat_set_feather_opt(Maat_feather_t feather,enum MAAT_INIT_OPT  type,const void* value,int size);
+enum MAAT_STATE_OPT
+{
+	MAAT_STATE_VERSION=1,			//Get current maat version. VALUE is interger, SIZE=sizeof(int). 
+	MAAT_STATE_LAST_UPDATING_TABLE	//Query at Maat_finish_callback_t to determine whether this table is the last one to update. VALUE is interger, SIZE=sizeof(int), 1:yes, 0: no
+};
+int Maat_read_feather_state(Maat_feather_t feather,enum MAAT_STATE_OPT  type,const void* value,int size);
+
 void Maat_burn_feather(Maat_feather_t feather);
 
 //return table_id(>=0) if success,otherwise return -1;
diff --git a/src/entry/Maat_command.cpp b/src/entry/Maat_command.cpp
index 9b056cd..a9e0dc3 100644
--- a/src/entry/Maat_command.cpp
+++ b/src/entry/Maat_command.cpp
@@ -1251,17 +1251,20 @@ int Maat_cmd_set_lines(Maat_feather_t feather,const struct Maat_line_t** line_ru
 			ret=-1;
 			goto error_out;
 		}
-		ret=get_valid_flag_offset(line_rule[i]->table_line
-			, _feather->p_table_info[table_id]->table_type
-			, _feather->p_table_info[table_id]->valid_flag_column);
-		if(ret<0||
-			(op==MAAT_OP_ADD&&line_rule[i]->table_line[ret]!='1'))
+		if(op==MAAT_OP_ADD)
 		{
-			MESA_handle_runtime_log(_feather->logger,RLOG_LV_FATAL,maat_command 
-					,"Command set line id %d failed: illegal valid flag."
-					, line_rule[i]->rule_id);
-			ret=-1;
-			goto error_out;
+			ret=get_valid_flag_offset(line_rule[i]->table_line
+				, _feather->p_table_info[table_id]->table_type
+				, _feather->p_table_info[table_id]->valid_flag_column);
+			if(ret<0||
+				(op==MAAT_OP_ADD&&line_rule[i]->table_line[ret]!='1'))
+			{
+				MESA_handle_runtime_log(_feather->logger,RLOG_LV_FATAL,maat_command 
+						,"Command set line id %d failed: illegal valid flag."
+						, line_rule[i]->rule_id);
+				ret=-1;
+				goto error_out;
+			}
 		}
 		if(line_rule[i]->expire_after>0)
 		{
diff --git a/src/entry/Maat_rule.cpp b/src/entry/Maat_rule.cpp
index c6c94b7..e1f6a56 100644
--- a/src/entry/Maat_rule.cpp
+++ b/src/entry/Maat_rule.cpp
@@ -2980,6 +2980,7 @@ void maat_start_cb(unsigned int new_version,int update_type,void*u_para)
 	struct _Maat_table_info_t* p_table=NULL;
 	struct _plugin_table_info* p_table_cb=NULL;
 	int i=0,j=0;
+	feather->new_version=new_version;
 	if(update_type==CM_UPDATE_TYPE_FULL)
 	{
 		feather->update_tmp_scanner=create_maat_scanner(new_version,feather);
@@ -3017,6 +3018,7 @@ void maat_start_cb(unsigned int new_version,int update_type,void*u_para)
 		{
 			continue;
 		}
+		feather->active_plugin_table_num++;
 		p_table_cb=p_table->cb_info;
 		for(j=0;j<p_table_cb->cb_plug_cnt;j++)
 		{
@@ -3052,6 +3054,10 @@ void maat_finish_cb(void* u_para)
 			continue;
 		}
 		p_table_cb=p_table->cb_info;
+		if(i==feather->active_plugin_table_num)
+		{
+			feather->is_last_plugin_table_updating=1;
+		}
 		for(j=0;j<p_table_cb->cb_plug_cnt;j++)
 		{
 			if(p_table_cb->cb_plug[j].finish!=NULL)
@@ -3059,6 +3065,7 @@ void maat_finish_cb(void* u_para)
 				p_table_cb->cb_plug[j].finish(p_table_cb->cb_plug[j].u_para);
 			}
 		}
+		feather->is_last_plugin_table_updating=0;
 	}
 	if(feather->update_tmp_scanner!=NULL)
 	{
@@ -3101,6 +3108,8 @@ void maat_finish_cb(void* u_para)
                                                                         "Version %d have no valid scan rules, plugin callback complete.",
                                                                         feather->maat_version);
 	}
+	feather->new_version=-1;
+	feather->active_plugin_table_num=0;
 	return;
 }
 int maat_update_cb(const char* table_name,const char* line,void *u_para)
diff --git a/src/entry/Maat_rule_internal.h b/src/entry/Maat_rule_internal.h
index 4839c2e..dc78dfd 100644
--- a/src/entry/Maat_rule_internal.h
+++ b/src/entry/Maat_rule_internal.h
@@ -392,6 +392,11 @@ struct _Maat_feather_t
 	struct _Maat_cmd_inner_t* cmd_qhead, *cmd_qtail;
 	pthread_mutex_t redis_write_lock; //protect redis_write_ctx
 	long long base_rgn_seq,base_grp_seq,server_time;
+//internal states
+	int new_version;
+	int active_plugin_table_num;
+	int is_last_plugin_table_updating;
+
 //for stat>>>>
 	screen_stat_handle_t stat_handle;
 	int total_stat_id;