innodb-index sporadic failure on MDEV-15325 test case

CURRENT_TEST: innodb.innodb-index

mysqltest: At line 1115: query 'SELECT * FROM t1' failed: 1286: Unknown storage engine 'InnoDB'

The result from queries just before the failure was:

< snip >

insert into t1 values(1,1,2),(2,2,1);

alter table t1 add n1 int not null, drop primary key, add primary key(o1,n1,o2), lock=none;

drop table t1;

create table t1(o1 int, o2 int, o3 int, primary key(o1,o2,o3)) engine = innodb;

insert into t1 values(1,1,2),(2,2,1);

alter table t1 drop primary key, add primary key(o1), lock=none;

drop table t1;

#

# MDEV-15325 Incomplete validation of missing tablespace during recovery

#

CREATE TABLE t1(f1 INT PRIMARY KEY)ENGINE=InnoDB;

CREATE TABLE t2(f1 INT PRIMARY KEY)ENGINE=InnoDB;

# Kill the server

# Wrong space_id in a dirty file and a missing file

SELECT * FROM INFORMATION_SCHEMA.ENGINES

WHERE engine = 'innodb'

AND support IN ('YES', 'DEFAULT', 'ENABLED');

ENGINE	SUPPORT	COMMENT	TRANSACTIONS	XA	SAVEPOINTS

# Restore t1 and t2

SELECT * FROM t1;

More results from queries before failure can be found in /dev/shm/var/4/log/innodb-index.log

 - skipping '/dev/shm/var/4/log/innodb.innodb-index-innodb/'

Retrying test innodb.innodb-index, attempt(2/3)...