insert 语句批量插入的数据在3M 左右
通过pymyql 插入时报错：
MySQL server has gone away (BrokenPipeError(32, 'Broken pipe')
进入mysql 查询最大插入的packet:
show VARIABLES like '%max_allowed_packet%';
+--------------------------+------------+ | Variable_name | Value | +--------------------------+------------+ | max_allowed_packet | 1048576 | | slave_max_allowed_packet | 1073741824 | +--------------------------+------------+
可以看到 max_allowed_packet 最大是1M , 修改为10M即可：
set global max_allowed_packet = 1024*1024*10;