Dual thread hang in 'closing tables' and 'Waiting for table metadata lock' on Spider CREATE OR REPLACE TABLE

INSTALL PLUGIN Spider SONAME 'ha_spider.so';

CREATE USER Spider@localhost IDENTIFIED BY 'PWD1';

CREATE SERVER srv FOREIGN DATA WRAPPER MYSQL OPTIONS (SOCKET '../socket.sock',DATABASE 'test',user 'Spider',PASSWORD 'PWD1');

CREATE TABLE t (c INT) ENGINE=Spider COMMENT='WRAPPER "mysql",srv "srv",TABLE "t"';

CREATE OR REPLACE TABLE t (c INT) ENGINE=Spider;

10.11.0-opt>SHOW FULL PROCESSLIST;

+----+-------------+-----------+------+---------+------+----------------------------------------------------+-------------------------------------------------+----------+

| Id | User        | Host      | db   | Command | Time | State                                              | Info                                            | Progress |

+----+-------------+-----------+------+---------+------+----------------------------------------------------+-------------------------------------------------+----------+

|  4 | root        | localhost | test | Query   |  303 | closing tables                                     | CREATE OR REPLACE TABLE t (c INT) ENGINE=Spider |    0.000 |

|  5 | system user |           | NULL | Daemon  | NULL | Spider table background cardinality action handler | NULL                                            |    0.000 |

|  6 | system user |           | NULL | Daemon  | NULL | Spider table background cardinality action handler | NULL                                            |    0.000 |

|  7 | system user |           | NULL | Daemon  | NULL | Spider table background cardinality action handler | NULL                                            |    0.000 |

|  8 | system user |           | NULL | Daemon  | NULL | Spider table background statistics action handler  | NULL                                            |    0.000 |

|  9 | system user |           | NULL | Daemon  | NULL | Spider table background cardinality action handler | NULL                                            |    0.000 |

| 11 | system user |           | NULL | Daemon  | NULL | Spider table background cardinality action handler | NULL                                            |    0.000 |

| 12 | system user |           | NULL | Daemon  | NULL | Spider table background statistics action handler  | NULL                                            |    0.000 |

| 13 | system user |           | NULL | Daemon  | NULL | Spider table background cardinality action handler | NULL                                            |    0.000 |

| 14 | system user |           | NULL | Daemon  | NULL | Spider table background cardinality action handler | NULL                                            |    0.000 |

| 15 | system user |           | NULL | Daemon  | NULL | Spider table background statistics action handler  | NULL                                            |    0.000 |

| 16 | system user |           | NULL | Sleep   |  303 | Reset for next command                             | NULL                                            |    0.000 |

| 17 | system user |           | NULL | Daemon  | NULL | Spider table background statistics action handler  | NULL                                            |    0.000 |

| 19 | system user |           | NULL | Daemon  | NULL | Spider table background statistics action handler  | NULL                                            |    0.000 |

| 20 | system user |           | NULL | Daemon  | NULL | Spider table background statistics action handler  | NULL                                            |    0.000 |

| 18 | system user |           | NULL | Daemon  | NULL | Spider table background statistics action handler  | NULL                                            |    0.000 |

| 10 | system user |           | NULL | Daemon  | NULL | Spider table background statistics action handler  | NULL                                            |    0.000 |

| 22 | system user |           | NULL | Daemon  | NULL | Spider table background cardinality action handler | NULL                                            |    0.000 |

| 21 | system user |           | NULL | Daemon  | NULL | Spider table background cardinality action handler | NULL                                            |    0.000 |

| 23 | system user |           | NULL | Daemon  | NULL | Spider table background statistics action handler  | NULL                                            |    0.000 |

| 24 | system user |           | NULL | Daemon  | NULL | Spider table background cardinality action handler | NULL                                            |    0.000 |

| 25 | Spider      | localhost | test | Query   |  303 | Waiting for table metadata lock                    | show table status from `test` like 't'          |    0.000 |

| 26 | root        | localhost | test | Query   |    0 | starting                                           | SHOW FULL PROCESSLIST                           |    0.000 |

+----+-------------+-----------+------+---------+------+----------------------------------------------------+-------------------------------------------------+----------+

23 rows in set (0.000 sec)