Starting MySQL. ERROR! The server quit without updating PID file (/alidata/server/mysql/data/AY140703134622335840Z.pid)

Starting MySQL. ERROR! The server quit without updating PID file (/alidata/server/mysql/data/AY140703134622335840Z.pid)   查看日志发现以下日志 请教高手这是什么问题？ 140813 08:42:34 mysqld_safe Starting mysqld daemon with databases from /alidata/server/mysql/data 140813  8:42:34 [Note] Plugin 'FEDERATED' is disabled. 140813  8:42:34 InnoDB: The InnoDB memory heap is disabled 140813  8:42:34 InnoDB: Mutexes and rw_locks use GCC atomic builtins 140813  8:42:34 InnoDB: C...