使用sysbench对TiDB集群进行压测,报“FATAL: mysql_drv_query() returned error 2013 (Lost connection to MySQL server during query) for query 'INSERT INTO sbtest9(k, c, pad) VALUES(...”错误

TiDB没有重启,我用Navicat连接和查询都是正常的,但是sysbench的prepare任务是中断了的