Ian.han

这个是proxy没有完全兼容mysql协议, 而sysbench恰好用了这个特性. 2023年了, sysbench 没有发新版, 目前1.0.20还会有这个问题. master 分支已经修复了这个问题, 怀疑 https://github.com/akopytov/sysbench/commit/ead2689ac6f61c5e7ba7c6e19198b86bd3a51d3c 2021.3.26这个commit “修复"的. 验证: 删除左方代码, 则不会出现该问题. 

@git-hulk Yes, I will do this next week. > @in-han Thanks for your feedback, would you like to submit a PR to improve this？ Yeah, I will do it next...

If this is a bug, I guess the sub_key may be out of control because the meta_key is lost.