SET @saved_dbug = @@debug_dbug;
SET debug_dbug='+d,unstable_db_type';
install soname 'ha_archive';
create table t1 (a int) engine=archive;
insert t1 values (1),(2),(3);
flush tables;
uninstall soname 'ha_archive';
select table_schema, table_name from information_schema.tables where table_name like 't1';
table_schema	test
table_name	t1
select table_schema, table_name, engine, version from information_schema.tables where table_name like 't1';
table_schema	test
table_name	t1
engine	ARCHIVE
version	NULL
Warnings:
Level	Warning
Code	1286
Message	Unknown storage engine 'ARCHIVE'
select table_schema, table_name, engine, row_format from information_schema.tables where table_name like 't1';
table_schema	test
table_name	t1
engine	ARCHIVE
row_format	NULL
Warnings:
Level	Warning
Code	1286
Message	Unknown storage engine 'ARCHIVE'
install soname 'ha_archive';
db.opt
t1.ARZ
t1.frm
drop table t1;
db.opt
uninstall soname 'ha_archive';
SET debug_dbug=@saved_dbug;