insert into select报错be与fe超时

报错 errCode = 2, detailMessage = (192.168.8.51)[CANCELLED]Couldn't open transport for 192.168.7.79:9020 (open() timed out)
语句：insert into tmp_table select * from dwd_table
其中 192.168.8.51是be节点、192.168.7.79是fe节点，这个脚本连的是另一个fe节点192.168.7.77.