Tokudb BUG ? ERROR 1034 (HY000): Incorrect key file for table 'mytable'

MySQL & MariaDB Percona Server for MySQL 5.7
1

Server version: 5.7.20-18-log Percona Server (GPL), Release 18, Revision 7ce54a6deef

Table info:

CREATE TABLE mytable (
ID varchar(500) NOT NULL,
c1 varchar(30) DEFAULT NULL,
c2 datetime DEFAULT NULL,
c3 datetime DEFAULT NULL,
UPDATE_TIME datetime DEFAULT NULL,
c4 datetime NOT NULL,
col1 decimal(4,0) DEFAULT NULL,
col2 decimal(2,0) DEFAULT NULL,
col3 decimal(2,0) DEFAULT NULL,
col4 decimal(2,0) DEFAULT NULL,
col5 decimal(2,0) DEFAULT NULL,
col6 varchar(9) NOT NULL,
col7 decimal(6,0) DEFAULT NULL,
col8 decimal(6,0) DEFAULT NULL,
col9 decimal(6,0) DEFAULT NULL,
col10 decimal(6,0) DEFAULT NULL,
PRIMARY KEY (id),
KEY D_UPDATE_TIME (UPDATE_TIME) USING BTREE
) ENGINE=TokuDB DEFAULT CHARSET=utf8

When execute following query:

select * from mytable where update_time < ‘2018-01-11 07:35:02’ limit 1;
ERROR 1034 (HY000): Incorrect key file for table ‘mytable’; try to repair it.

FYI:

There is enough space on all my disk. The default txn isolation is RC.

Please tell me why this happend and how to repair it?

2

Do you have anything in the Error Logs ?

3

TokuDB does not emit that error. InnoDB, MyISAM and the server code appears to though. It is probably a problem with some system table.