#################
# INITIAL STATE #
#################
update performance_schema.setup_objects
set ENABLED = "YES", TIMED = "YES"
  where OBJECT_TYPE = "TABLE" and OBJECT_SCHEMA = "performance_schema";
FLUSH TABLES;
select * from INFORMATION_SCHEMA.tables
where TABLE_NAME like "pfs_example_%";
TABLE_CATALOG	TABLE_SCHEMA	TABLE_NAME	TABLE_TYPE	ENGINE	VERSION	ROW_FORMAT	TABLE_ROWS	AVG_ROW_LENGTH	DATA_LENGTH	MAX_DATA_LENGTH	INDEX_LENGTH	DATA_FREE	AUTO_INCREMENT	CREATE_TIME	UPDATE_TIME	CHECK_TIME	TABLE_COLLATION	CHECKSUM	CREATE_OPTIONS	TABLE_COMMENT
describe performance_schema.pfs_example_employee_name;
ERROR 42S02: Table 'performance_schema.pfs_example_employee_name' doesn't exist
show create table performance_schema.pfs_example_employee_name;
ERROR 42S02: Table 'performance_schema.pfs_example_employee_name' doesn't exist
select * from performance_schema.pfs_example_employee_name;
ERROR 42S02: Table 'performance_schema.pfs_example_employee_name' doesn't exist
###########
# INSTALL #
###########
INSTALL PLUGIN pfs_example_plugin_employee SONAME 'pfs_example_plugin_employee.xxx';
select name from mysql.plugin
where name like 'pfs_example_%';
name
pfs_example_plugin_employee
select TABLE_SCHEMA, TABLE_NAME, ENGINE, VERSION, TABLE_COMMENT
from INFORMATION_SCHEMA.tables
where TABLE_NAME like "pfs_example_%"
  order by table_name;
TABLE_SCHEMA	TABLE_NAME	ENGINE	VERSION	TABLE_COMMENT
performance_schema	pfs_example_employee_name	PERFORMANCE_SCHEMA	10	
performance_schema	pfs_example_employee_salary	PERFORMANCE_SCHEMA	10	
performance_schema	pfs_example_machine	PERFORMANCE_SCHEMA	10	
performance_schema	pfs_example_machine_by_employee_by_type	PERFORMANCE_SCHEMA	10	
describe performance_schema.pfs_example_employee_name;
Field	Type	Null	Key	Default	Extra
EMPLOYEE_NUMBER	int(11)	NO	PRI	NULL	
FIRST_NAME	char(20)	YES	MUL	NULL	
LAST_NAME	varchar(20)	YES		NULL	
show create table performance_schema.pfs_example_employee_name;
Table	Create Table
pfs_example_employee_name	CREATE TABLE `pfs_example_employee_name` (
  `EMPLOYEE_NUMBER` int(11) NOT NULL,
  `FIRST_NAME` char(20) DEFAULT NULL,
  `LAST_NAME` varchar(20) DEFAULT NULL,
  PRIMARY KEY (`EMPLOYEE_NUMBER`),
  KEY `FIRST_NAME` (`FIRST_NAME`)
) ENGINE=PERFORMANCE_SCHEMA DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci
select * from performance_schema.pfs_example_employee_name;
EMPLOYEE_NUMBER	FIRST_NAME	LAST_NAME
1	foo1	bar1
2	foo2	bar2
3	foo3	bar3
"===== In con1 : Issue query"
select * from performance_schema.pfs_example_employee_name;
EMPLOYEE_NUMBER	FIRST_NAME	LAST_NAME
1	foo1	bar1
2	foo2	bar2
3	foo3	bar3
"===== In con2 : Starting transaction"
begin;
select * from performance_schema.pfs_example_employee_name;
EMPLOYEE_NUMBER	FIRST_NAME	LAST_NAME
1	foo1	bar1
2	foo2	bar2
3	foo3	bar3
##############
# UN INSTALL #
##############
"===== In default : Sending UNINSTALL"
UNINSTALL PLUGIN pfs_example_plugin_employee;
"===== Check table lock status "
OBJECT_TYPE	OBJECT_SCHEMA	OBJECT_NAME	OWNER_THREAD_ID	INTERNAL_LOCK	EXTERNAL_LOCK
TABLE	performance_schema	pfs_example_employee_name	NULL	NULL	NULL
TABLE	performance_schema	pfs_example_employee_name	NULL	NULL	NULL
TABLE	performance_schema	pfs_example_employee_name	NULL	NULL	NULL
"===== Check Thread Status for default connection "
NAME	PROCESSLIST_COMMAND	PROCESSLIST_STATE	PROCESSLIST_INFO
thread/sql/one_connection	Query	Waiting for table metadata lock	UNINSTALL PLUGIN pfs_example_plugin_employee
"===== Check metadata lock status "
OBJECT_TYPE	OBJECT_SCHEMA	OBJECT_NAME	LOCK_TYPE	LOCK_DURATION	LOCK_STATUS
TABLE	performance_schema	pfs_example_employee_name	SHARED_READ	TRANSACTION	GRANTED
TABLE	performance_schema	pfs_example_employee_name	EXCLUSIVE	TRANSACTION	PENDING
select name from mysql.plugin
where name like 'pfs_example_%';
name
pfs_example_plugin_employee
"===== In con1 : Send a query. About to block"
select * from performance_schema.pfs_example_employee_name;
"===== In con2 : Still alive. Issue a query."
select * from performance_schema.pfs_example_employee_name;
EMPLOYEE_NUMBER	FIRST_NAME	LAST_NAME
1	foo1	bar1
2	foo2	bar2
3	foo3	bar3
"===== Check table lock status "
OBJECT_TYPE	OBJECT_SCHEMA	OBJECT_NAME	OWNER_THREAD_ID	INTERNAL_LOCK	EXTERNAL_LOCK
TABLE	performance_schema	pfs_example_employee_name	NULL	NULL	NULL
TABLE	performance_schema	pfs_example_employee_name	NULL	NULL	NULL
TABLE	performance_schema	pfs_example_employee_name	NULL	NULL	NULL
"===== Check Thread Status for default connection "
NAME	PROCESSLIST_COMMAND	PROCESSLIST_STATE	PROCESSLIST_INFO
thread/sql/one_connection	Query	Waiting for table metadata lock	UNINSTALL PLUGIN pfs_example_plugin_employee
"===== Check metadata lock status "
OBJECT_TYPE	OBJECT_SCHEMA	OBJECT_NAME	LOCK_TYPE	LOCK_DURATION	LOCK_STATUS
TABLE	performance_schema	pfs_example_employee_name	SHARED_READ	TRANSACTION	GRANTED
TABLE	performance_schema	pfs_example_employee_name	EXCLUSIVE	TRANSACTION	PENDING
TABLE	performance_schema	pfs_example_employee_name	SHARED_READ	TRANSACTION	PENDING
"===== In con2 : Closing transaction"
commit;
########
# CON1 #
########
ERROR 42S02: Table 'performance_schema.pfs_example_employee_name' doesn't exist
########################
# UNINSTALL completing #
########################
select name from mysql.plugin
where name like 'pfs_example_%';
name
select * from INFORMATION_SCHEMA.tables
where TABLE_NAME like "pfs_example_%";
TABLE_CATALOG	TABLE_SCHEMA	TABLE_NAME	TABLE_TYPE	ENGINE	VERSION	ROW_FORMAT	TABLE_ROWS	AVG_ROW_LENGTH	DATA_LENGTH	MAX_DATA_LENGTH	INDEX_LENGTH	DATA_FREE	AUTO_INCREMENT	CREATE_TIME	UPDATE_TIME	CHECK_TIME	TABLE_COLLATION	CHECKSUM	CREATE_OPTIONS	TABLE_COMMENT
describe performance_schema.pfs_example_employee_name;
ERROR 42S02: Table 'performance_schema.pfs_example_employee_name' doesn't exist
show create table performance_schema.pfs_example_employee_name;
ERROR 42S02: Table 'performance_schema.pfs_example_employee_name' doesn't exist
select * from performance_schema.pfs_example_employee_name;
ERROR 42S02: Table 'performance_schema.pfs_example_employee_name' doesn't exist
###############
# INSTALL (2) #
###############
INSTALL PLUGIN pfs_example_plugin_employee SONAME 'pfs_example_plugin_employee.xxx';
select name from mysql.plugin
where name like 'pfs_example_%';
name
pfs_example_plugin_employee
select TABLE_SCHEMA, TABLE_NAME, ENGINE, VERSION, TABLE_COMMENT
from INFORMATION_SCHEMA.tables
where TABLE_NAME like "pfs_example_%"
  order by table_name;
TABLE_SCHEMA	TABLE_NAME	ENGINE	VERSION	TABLE_COMMENT
performance_schema	pfs_example_employee_name	PERFORMANCE_SCHEMA	10	
performance_schema	pfs_example_employee_salary	PERFORMANCE_SCHEMA	10	
performance_schema	pfs_example_machine	PERFORMANCE_SCHEMA	10	
performance_schema	pfs_example_machine_by_employee_by_type	PERFORMANCE_SCHEMA	10	
describe performance_schema.pfs_example_employee_name;
Field	Type	Null	Key	Default	Extra
EMPLOYEE_NUMBER	int(11)	NO	PRI	NULL	
FIRST_NAME	char(20)	YES	MUL	NULL	
LAST_NAME	varchar(20)	YES		NULL	
show create table performance_schema.pfs_example_employee_name;
Table	Create Table
pfs_example_employee_name	CREATE TABLE `pfs_example_employee_name` (
  `EMPLOYEE_NUMBER` int(11) NOT NULL,
  `FIRST_NAME` char(20) DEFAULT NULL,
  `LAST_NAME` varchar(20) DEFAULT NULL,
  PRIMARY KEY (`EMPLOYEE_NUMBER`),
  KEY `FIRST_NAME` (`FIRST_NAME`)
) ENGINE=PERFORMANCE_SCHEMA DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci
select * from performance_schema.pfs_example_employee_name;
EMPLOYEE_NUMBER	FIRST_NAME	LAST_NAME
1	foo1	bar1
2	foo2	bar2
3	foo3	bar3
"===== In con1 : Issue query."
select * from performance_schema.pfs_example_employee_name;
EMPLOYEE_NUMBER	FIRST_NAME	LAST_NAME
1	foo1	bar1
2	foo2	bar2
3	foo3	bar3
"===== In con2 : Start transaction."
begin;
select * from performance_schema.pfs_example_employee_name;
EMPLOYEE_NUMBER	FIRST_NAME	LAST_NAME
1	foo1	bar1
2	foo2	bar2
3	foo3	bar3
##################
# UN INSTALL (2) #
##################
"===== In default : Sending UNINSTALL"
UNINSTALL PLUGIN pfs_example_plugin_employee;
"===== Check table lock status "
OBJECT_TYPE	OBJECT_SCHEMA	OBJECT_NAME	OWNER_THREAD_ID	INTERNAL_LOCK	EXTERNAL_LOCK
TABLE	performance_schema	pfs_example_employee_name	NULL	NULL	NULL
TABLE	performance_schema	pfs_example_employee_name	NULL	NULL	NULL
TABLE	performance_schema	pfs_example_employee_name	NULL	NULL	NULL
"===== Check Thread Status for default connection "
NAME	PROCESSLIST_COMMAND	PROCESSLIST_STATE	PROCESSLIST_INFO
thread/sql/one_connection	Query	Waiting for table metadata lock	UNINSTALL PLUGIN pfs_example_plugin_employee
"===== Check metadata lock status "
OBJECT_TYPE	OBJECT_SCHEMA	OBJECT_NAME	LOCK_TYPE	LOCK_DURATION	LOCK_STATUS
TABLE	performance_schema	pfs_example_employee_name	SHARED_READ	TRANSACTION	GRANTED
TABLE	performance_schema	pfs_example_employee_name	EXCLUSIVE	TRANSACTION	PENDING
select name from mysql.plugin
where name like 'pfs_example_%';
name
pfs_example_plugin_employee
"===== In con1 : Send query. About to block"
select * from performance_schema.pfs_example_employee_name;
"===== In con2 : Still alive. Issue query."
select * from performance_schema.pfs_example_employee_name;
EMPLOYEE_NUMBER	FIRST_NAME	LAST_NAME
1	foo1	bar1
2	foo2	bar2
3	foo3	bar3
"===== Check table lock status "
OBJECT_TYPE	OBJECT_SCHEMA	OBJECT_NAME	OWNER_THREAD_ID	INTERNAL_LOCK	EXTERNAL_LOCK
TABLE	performance_schema	pfs_example_employee_name	NULL	NULL	NULL
TABLE	performance_schema	pfs_example_employee_name	NULL	NULL	NULL
TABLE	performance_schema	pfs_example_employee_name	NULL	NULL	NULL
"===== Check Thread Status for default connection "
NAME	PROCESSLIST_COMMAND	PROCESSLIST_STATE	PROCESSLIST_INFO
thread/sql/one_connection	Query	Waiting for table metadata lock	UNINSTALL PLUGIN pfs_example_plugin_employee
"===== Check metadata lock status "
OBJECT_TYPE	OBJECT_SCHEMA	OBJECT_NAME	LOCK_TYPE	LOCK_DURATION	LOCK_STATUS
TABLE	performance_schema	pfs_example_employee_name	SHARED_READ	TRANSACTION	GRANTED
TABLE	performance_schema	pfs_example_employee_name	EXCLUSIVE	TRANSACTION	PENDING
TABLE	performance_schema	pfs_example_employee_name	SHARED_READ	TRANSACTION	PENDING
#########################
# KILLING UNINSTALL (2) #
#########################
kill query @pid;
"===== In con2 : Closing transaction"
commit;
########
# CON1 #
########
EMPLOYEE_NUMBER	FIRST_NAME	LAST_NAME
1	foo1	bar1
2	foo2	bar2
3	foo3	bar3
############################
# UNINSTALL (2) completing #
############################
ERROR 70100: Query execution was interrupted
show errors;
Level	Code	Message
Error	1317	Query execution was interrupted
Error	1883	Plugin 'pfs_example_plugin_employee' cannot be uninstalled now. Plugin is still in use.
select name from mysql.plugin
where name like 'pfs_example_%';
name
pfs_example_plugin_employee
select TABLE_SCHEMA, TABLE_NAME, ENGINE, VERSION, TABLE_COMMENT
from INFORMATION_SCHEMA.tables
where TABLE_NAME like "pfs_example_%"
  order by table_name;
TABLE_SCHEMA	TABLE_NAME	ENGINE	VERSION	TABLE_COMMENT
performance_schema	pfs_example_employee_name	PERFORMANCE_SCHEMA	10	
performance_schema	pfs_example_employee_salary	PERFORMANCE_SCHEMA	10	
performance_schema	pfs_example_machine	PERFORMANCE_SCHEMA	10	
performance_schema	pfs_example_machine_by_employee_by_type	PERFORMANCE_SCHEMA	10	
describe performance_schema.pfs_example_employee_name;
Field	Type	Null	Key	Default	Extra
EMPLOYEE_NUMBER	int(11)	NO	PRI	NULL	
FIRST_NAME	char(20)	YES	MUL	NULL	
LAST_NAME	varchar(20)	YES		NULL	
show create table performance_schema.pfs_example_employee_name;
Table	Create Table
pfs_example_employee_name	CREATE TABLE `pfs_example_employee_name` (
  `EMPLOYEE_NUMBER` int(11) NOT NULL,
  `FIRST_NAME` char(20) DEFAULT NULL,
  `LAST_NAME` varchar(20) DEFAULT NULL,
  PRIMARY KEY (`EMPLOYEE_NUMBER`),
  KEY `FIRST_NAME` (`FIRST_NAME`)
) ENGINE=PERFORMANCE_SCHEMA DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci
select * from performance_schema.pfs_example_employee_name;
EMPLOYEE_NUMBER	FIRST_NAME	LAST_NAME
1	foo1	bar1
2	foo2	bar2
3	foo3	bar3
##################
# UN INSTALL (3) #
##################
UNINSTALL PLUGIN pfs_example_plugin_employee;
select * from INFORMATION_SCHEMA.tables
where TABLE_NAME like "pfs_example_%";
TABLE_CATALOG	TABLE_SCHEMA	TABLE_NAME	TABLE_TYPE	ENGINE	VERSION	ROW_FORMAT	TABLE_ROWS	AVG_ROW_LENGTH	DATA_LENGTH	MAX_DATA_LENGTH	INDEX_LENGTH	DATA_FREE	AUTO_INCREMENT	CREATE_TIME	UPDATE_TIME	CHECK_TIME	TABLE_COLLATION	CHECKSUM	CREATE_OPTIONS	TABLE_COMMENT
describe performance_schema.pfs_example_employee_name;
ERROR 42S02: Table 'performance_schema.pfs_example_employee_name' doesn't exist
show create table performance_schema.pfs_example_employee_name;
ERROR 42S02: Table 'performance_schema.pfs_example_employee_name' doesn't exist
select * from performance_schema.pfs_example_employee_name;
ERROR 42S02: Table 'performance_schema.pfs_example_employee_name' doesn't exist
###########
# CLEANUP #
###########
update performance_schema.setup_objects
set ENABLED = "NO", TIMED = "NO"
  where OBJECT_TYPE = "TABLE" and OBJECT_SCHEMA = "performance_schema";
FLUSH TABLES;