The wfHoover.ibd file continually disappears + reappears.
At first I thought this was a MySQL resource issue.
When I deactivate + activate WordFence the .ibd file reappears.
Shortly thereafter, the .ibd file disappears again.
Later it reappears.
Many log entries matching the error below spew into syslog on a 20 minute cycle.
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Sep 3 06:28:12 slnet1 mysqld: InnoDB: Error: trying to load index k2 for table 847830_root/sl_wfHoover
Sep 3 06:28:12 slnet1 mysqld: InnoDB: but the index tree has been freed!
Sep 3 06:28:12 slnet1 mysqld: 140903 6:28:12 [ERROR] Cannot find or open table 847830_root/sl_wfHoover from
Sep 3 06:28:12 slnet1 mysqld: the internal data dictionary of InnoDB though the .frm file for the
Sep 3 06:28:12 slnet1 mysqld: table exists. Maybe you have deleted and recreated InnoDB data
Sep 3 06:28:12 slnet1 mysqld: files but have forgotten to delete the corresponding .frm files
Sep 3 06:28:12 slnet1 mysqld: of InnoDB tables, or you have moved .frm files to another database?
Sep 3 06:28:12 slnet1 mysqld: or, the table contains indexes that this version of the engine
Sep 3 06:28:12 slnet1 mysqld: doesn't support.
Sep 3 06:28:12 slnet1 mysqld: See http://dev.mysql.com/doc/refman/5.5/en/innodb-troubleshooting.html
Sep 3 06:28:12 slnet1 mysqld: how you can resolve the problem.