Packet for query is too large (1660 > 1024). You can change this value on the server by setting the max_allowed_packet' variable.
原因是mysql 默认允许的 数据报包 是 1M 设置大一些就可以了
centos 下面 /ect/my.cnf 文件里面 加入或者修改 下面的参数
[mysqld]
max_allowed_packet=20M
这个可以查询 允许的最大数据报包
SHOW VARIABLES LIKE '%max_allowed_packet%';
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