diff --git a/src/entry/Maat_command.cpp b/src/entry/Maat_command.cpp
index 02ce3ca..4f43ac5 100644
--- a/src/entry/Maat_command.cpp
+++ b/src/entry/Maat_command.cpp
@@ -547,12 +547,13 @@ error_out:
 	MESA_htable_destroy(htable, NULL);
 	return ret;
 }
-int get_rm_key_list(redisContext *c, long long instance_version, long long desired_version, long long* new_version, struct serial_rule_t** list,int *update_type, void* logger, int cumulative_off)
+
+int get_rm_key_list(redisContext *c, long long instance_version, long long desired_version, long long* new_version, struct Maat_table_manager* table_mgr, struct serial_rule_t** list,int *update_type, void* logger, int cumulative_off)
 {
 	redisReply* reply=NULL,*sub_reply=NULL;
 	char err_buff[256];
 	long long redis_version=0,target_version=0;
-	int rule_num=0, changed_rule_num=0;
+	int rule_num=0, changed_rule_num=0, table_id=0;
 	int ret=0;
 	unsigned int i=0,full_idx =0,append_cmd_cnt=0;
 	struct serial_rule_t *s_rule_array=NULL, *changed_rule_array=NULL, *history_rule_array=NULL;
@@ -701,6 +702,14 @@ FULL_UPDATE:
 			"Invalid Redis Key Format: %s", sub_reply->element[i]->str);
 			continue;
 		}
+		if(table_mgr)
+		{
+			table_id=Maat_table_get_id_by_name(table_mgr, s_rule_array[full_idx].table_name);
+			if(table_id<0)//Unrecognized table.
+			{
+				continue;
+			}
+		}
 		full_idx++;
 	}
 	rule_num=full_idx;
@@ -1330,9 +1339,11 @@ error_out:
 }
 const char* find_Nth_column(const char* line, int Nth, int* column_len)
 {
-	int i=0, j=0;
+	size_t i=0;
+	int j=0;
 	int start=0, end=0;
-	for(i=0;i<(int)strlen(line);i++)
+	size_t line_len= strlen(line);
+	for(i=0;i<line_len;i++)
 	{
 		if(line[i]!=' '&&line[i]!='\t')
 		{
@@ -1658,7 +1669,7 @@ void redis_monitor_traverse(long        long version, struct source_redis_ctx* m
 		}
 	}
 	
-	rule_num=get_rm_key_list(mr_ctx->read_ctx, version, feather->load_version_from, &new_version, &rule_list, &update_type, logger, feather->cumulative_update_off);
+	rule_num=get_rm_key_list(mr_ctx->read_ctx, version, feather->load_version_from, &new_version, feather->table_mgr, &rule_list, &update_type, logger, feather->cumulative_update_off);
 	if(rule_num<0)//redis communication error
 	{
 		return;
diff --git a/src/entry/Maat_rule.cpp b/src/entry/Maat_rule.cpp
index 6b01597..f7586ae 100644
--- a/src/entry/Maat_rule.cpp
+++ b/src/entry/Maat_rule.cpp
@@ -1667,6 +1667,13 @@ void update_expr_rule(struct Maat_table_schema* table,const char* table_line,str
 			maat_str_rule->match_method=MATCH_METHOD_SUB;
 				
 		}
+		if(strlen(maat_str_rule->keywords)<4)
+		{
+			MESA_handle_runtime_log(logger, RLOG_LV_INFO, maat_module ,
+										"Table %s region cfg %d has a expr less than 4 bytes.",
+										table->table_name,
+										maat_str_rule->region_id);
+		}
 		ret=add_expr_rule(table, maat_str_rule, scanner, logger);
 		if(ret<0)
 		{
diff --git a/src/inc_internal/Maat_rule_internal.h b/src/inc_internal/Maat_rule_internal.h
index dba92e2..c92b944 100644
--- a/src/inc_internal/Maat_rule_internal.h
+++ b/src/inc_internal/Maat_rule_internal.h
@@ -390,7 +390,7 @@ void maat_stat_table(struct Maat_table_runtime* p,int scan_len,struct timespec*
 void maat_stat_output(struct _Maat_feather_t* feather);
 
 redisReply *_wrap_redisCommand(redisContext *c, const char *format, ...);
-int get_rm_key_list(redisContext *c, long long instance_version, long long desired_version, long long* new_version, struct serial_rule_t** list,int *update_type, void* logger, int cumulative_off);
+int get_rm_key_list(redisContext *c, long long instance_version, long long desired_version, long long* new_version, struct Maat_table_manager* table_mgr, struct serial_rule_t** list,int *update_type, void* logger, int cumulative_off);
 int get_maat_redis_value(redisContext *c,struct serial_rule_t* rule_list,int rule_num,void* logger,int print_process);
 int get_foreign_keys_by_prefix(redisContext *ctx, struct serial_rule_t* rule_list, int rule_num, const char* dir,void *logger);
 void get_foreign_conts(redisContext *ctx, struct serial_rule_t* rule_list, int rule_num, int print_fn, void *logger);
diff --git a/tools/maat_redis_tool.cpp b/tools/maat_redis_tool.cpp
index 9ff0240..aff81b0 100644
--- a/tools/maat_redis_tool.cpp
+++ b/tools/maat_redis_tool.cpp
@@ -34,10 +34,12 @@ static int compare_serial_rule(const void *a, const void *b)
 	struct serial_rule_t *ra=(struct serial_rule_t *)a;
 	struct serial_rule_t *rb=(struct serial_rule_t *)b;
 
-	char p_str[256],q_str[256];
-	snprintf(p_str,sizeof(p_str),"%s.%ld",ra->table_name,ra->rule_id);
-	snprintf(q_str,sizeof(q_str),"%s.%ld",rb->table_name,rb->rule_id);
-	return strcmp(p_str,q_str);
+	int ret=strcmp(ra->table_name, rb->table_name);
+	if(ret==0)
+	{
+		ret= ra->rule_id - rb->rule_id;
+	}
+	return ret;
 }
 
 void read_rule_from_redis(redisContext * ctx, long long desire_version, const char* output_path ,void*logger)
@@ -51,7 +53,7 @@ void read_rule_from_redis(redisContext * ctx, long long desire_version, const ch
 
 	char table_path[256],index_path[256];
 	FILE *table_fp=NULL, *index_fp=NULL;
-	rule_num=get_rm_key_list(ctx, 0, desire_version, &version, &rule_list, &update_type, logger,0);
+	rule_num=get_rm_key_list(ctx, 0, desire_version, &version, NULL, &rule_list, &update_type, logger,0);
 	if(rule_num==0)
 	{
 		if(desire_version!=0)