[ERROR] Cannot find or open table wu777/processlist from the internal data dictionary of InnoDB tho

错误日志报错：

160719 14:51:01 [ERROR] Cannot find or open table wu777/processlist from
the internal data dictionary of InnoDB though the .frm file for the
table exists. Maybe you have deleted and recreated InnoDB data
files but have forgotten to delete the corresponding .frm files
of InnoDB tables, or you have moved .frm files to another database?
or, the table contains indexes that this version of the engine
doesn't support.
See http://dev.mysql.com/doc/refman/5.5/en/innodb-troubleshooting.html
how you can resolve the problem.

在information_schema里能看到该表的相应信息。如：

mysql> use wu777;
Database changed

mysql> show tables;
+-------------------------------+
 Tables_in_wu777               
+-------------------------------+                
 processlist       

           
但是却无法访问这个表。

ERROR 1146 (42S02): Table 'wu777.processlist' doesn't exist

而且，.frm文件还存在。

解决办法：

drop table wu777.processlist;

虽然执行该sql仍然会报错ERROR 1051 (42S02): Unknown table 'wu777.processlist''，但是再show tables就看不到这个表了。