select name, if(enabled,'enabled','disabled') status
from information_schema.innodb_metrics;
name	status
metadata_table_handles_opened	disabled
lock_deadlocks	enabled
lock_timeouts	enabled
lock_rec_lock_waits	disabled
lock_table_lock_waits	disabled
lock_rec_lock_requests	disabled
lock_rec_lock_created	disabled
lock_rec_lock_removed	disabled
lock_rec_locks	disabled
lock_table_lock_created	disabled
lock_table_lock_removed	disabled
lock_table_locks	disabled
lock_row_lock_current_waits	enabled
lock_row_lock_time	enabled
lock_row_lock_time_max	enabled
lock_row_lock_waits	enabled
lock_row_lock_time_avg	enabled
buffer_pool_size	enabled
buffer_pool_reads	enabled
buffer_pool_read_requests	enabled
buffer_pool_write_requests	enabled
buffer_pool_wait_free	enabled
buffer_pool_read_ahead	enabled
buffer_pool_read_ahead_evicted	enabled
buffer_pool_pages_total	enabled
buffer_pool_pages_misc	enabled
buffer_pool_pages_data	enabled
buffer_pool_bytes_data	enabled
buffer_pool_pages_dirty	enabled
buffer_pool_bytes_dirty	enabled
buffer_pool_pages_free	enabled
buffer_pages_created	enabled
buffer_pages_written	enabled
buffer_pages_read	enabled
buffer_data_reads	enabled
buffer_data_written	enabled
buffer_flush_batch_scanned	disabled
buffer_flush_batch_num_scan	disabled
buffer_flush_batch_scanned_per_call	disabled
buffer_flush_batch_total_pages	disabled
buffer_flush_batches	disabled
buffer_flush_batch_pages	disabled
buffer_flush_neighbor_total_pages	disabled
buffer_flush_neighbor	disabled
buffer_flush_neighbor_pages	disabled
buffer_flush_n_to_flush_requested	disabled
buffer_flush_n_to_flush_by_age	disabled
buffer_flush_adaptive_avg_time	disabled
buffer_flush_adaptive_avg_pass	disabled
buffer_LRU_get_free_loops	disabled
buffer_flush_avg_page_rate	disabled
buffer_flush_lsn_avg_rate	disabled
buffer_flush_pct_for_dirty	disabled
buffer_flush_pct_for_lsn	disabled
buffer_flush_sync_waits	disabled
buffer_flush_adaptive_total_pages	disabled
buffer_flush_adaptive	disabled
buffer_flush_adaptive_pages	disabled
buffer_flush_sync_total_pages	disabled
buffer_flush_sync	disabled
buffer_flush_sync_pages	disabled
buffer_flush_background_total_pages	disabled
buffer_flush_background	disabled
buffer_flush_background_pages	disabled
buffer_LRU_batch_scanned	disabled
buffer_LRU_batch_num_scan	disabled
buffer_LRU_batch_scanned_per_call	disabled
buffer_LRU_batch_flush_total_pages	enabled
buffer_LRU_batch_evict_total_pages	enabled
buffer_LRU_get_free_search	disabled
buffer_LRU_search_scanned	disabled
buffer_LRU_search_num_scan	disabled
buffer_LRU_search_scanned_per_call	disabled
buffer_LRU_unzip_search_scanned	disabled
buffer_LRU_unzip_search_num_scan	disabled
buffer_LRU_unzip_search_scanned_per_call	disabled
buffer_page_read_index_leaf	disabled
buffer_page_read_index_non_leaf	disabled
buffer_page_read_index_ibuf_leaf	disabled
buffer_page_read_index_ibuf_non_leaf	disabled
buffer_page_read_undo_log	disabled
buffer_page_read_index_inode	disabled
buffer_page_read_ibuf_free_list	disabled
buffer_page_read_ibuf_bitmap	disabled
buffer_page_read_system_page	disabled
buffer_page_read_trx_system	disabled
buffer_page_read_fsp_hdr	disabled
buffer_page_read_xdes	disabled
buffer_page_read_blob	disabled
buffer_page_read_zblob	disabled
buffer_page_read_zblob2	disabled
buffer_page_read_other	disabled
buffer_page_written_index_leaf	disabled
buffer_page_written_index_non_leaf	disabled
buffer_page_written_index_ibuf_leaf	disabled
buffer_page_written_index_ibuf_non_leaf	disabled
buffer_page_written_undo_log	disabled
buffer_page_written_index_inode	disabled
buffer_page_written_ibuf_free_list	disabled
buffer_page_written_ibuf_bitmap	disabled
buffer_page_written_system_page	disabled
buffer_page_written_trx_system	disabled
buffer_page_written_fsp_hdr	disabled
buffer_page_written_xdes	disabled
buffer_page_written_blob	disabled
buffer_page_written_zblob	disabled
buffer_page_written_zblob2	disabled
buffer_page_written_other	disabled
os_data_reads	enabled
os_data_writes	enabled
os_data_fsyncs	enabled
os_pending_reads	enabled
os_pending_writes	enabled
os_log_bytes_written	enabled
trx_rw_commits	disabled
trx_ro_commits	disabled
trx_nl_ro_commits	disabled
trx_commits_insert_update	disabled
trx_rollbacks	disabled
trx_rollbacks_savepoint	disabled
trx_rseg_history_len	enabled
trx_undo_slots_used	disabled
trx_undo_slots_cached	enabled
trx_rseg_current_size	disabled
purge_del_mark_records	disabled
purge_upd_exist_or_extern_records	disabled
purge_invoked	disabled
purge_undo_log_pages	disabled
purge_dml_delay_usec	disabled
purge_stop_count	disabled
purge_resume_count	disabled
log_checkpoints	disabled
log_lsn_last_flush	disabled
log_lsn_last_checkpoint	disabled
log_lsn_current	disabled
log_lsn_checkpoint_age	disabled
log_lsn_buf_pool_oldest	disabled
log_max_modified_age_async	disabled
log_waits	enabled
log_write_requests	enabled
log_writes	enabled
compress_pages_compressed	disabled
compress_pages_decompressed	disabled
compression_pad_increments	disabled
compression_pad_decrements	disabled
compress_saved	disabled
compress_pages_page_compressed	disabled
compress_page_compressed_trim_op	disabled
compress_pages_page_decompressed	disabled
compress_pages_page_compression_error	disabled
compress_pages_encrypted	disabled
compress_pages_decrypted	disabled
index_page_splits	disabled
index_page_merge_attempts	disabled
index_page_merge_successful	disabled
index_page_reorg_attempts	disabled
index_page_reorg_successful	disabled
index_page_discards	disabled
adaptive_hash_searches	enabled
adaptive_hash_searches_btree	enabled
adaptive_hash_pages_added	disabled
adaptive_hash_pages_removed	disabled
adaptive_hash_rows_added	disabled
adaptive_hash_rows_removed	disabled
adaptive_hash_rows_deleted_no_hash_entry	disabled
adaptive_hash_rows_updated	disabled
file_num_open_files	enabled
ibuf_merges_insert	enabled
ibuf_merges_delete_mark	enabled
ibuf_merges_delete	enabled
ibuf_merges_discard_insert	enabled
ibuf_merges_discard_delete_mark	enabled
ibuf_merges_discard_delete	enabled
ibuf_merges	enabled
ibuf_size	enabled
innodb_master_thread_sleeps	disabled
innodb_activity_count	enabled
innodb_master_active_loops	disabled
innodb_master_idle_loops	disabled
innodb_log_flush_usec	disabled
innodb_dict_lru_usec	disabled
innodb_dict_lru_count_active	disabled
innodb_dict_lru_count_idle	disabled
innodb_dblwr_writes	enabled
innodb_dblwr_pages_written	enabled
innodb_page_size	enabled
ddl_background_drop_indexes	disabled
ddl_online_create_index	disabled
ddl_pending_alter_table	disabled
ddl_sort_file_alter_table	disabled
ddl_log_file_alter_table	disabled
icp_attempts	disabled
icp_no_match	disabled
icp_out_of_range	disabled
icp_match	disabled
create temporary table orig_innodb_metrics as select name, enabled from information_schema.innodb_metrics;
set global innodb_monitor_disable = All;
select name from information_schema.innodb_metrics where enabled;
name
set global innodb_monitor_enable = all;
select name from information_schema.innodb_metrics where not enabled;
name
set global innodb_monitor_enable = aaa;
ERROR 42000: Variable 'innodb_monitor_enable' can't be set to the value of 'aaa'
set global innodb_monitor_disable = All;
select name from information_schema.innodb_metrics where enabled;
name
set global innodb_monitor_reset_all = all;
select name from information_schema.innodb_metrics where count!=0;
name
set  global innodb_monitor_enable = "%lock%";
select name from information_schema.innodb_metrics
where enabled != (name like "%lock%");
name
set  global innodb_monitor_disable = "%lock%";
select name, if(enabled,'enabled','disabled') status
from information_schema.innodb_metrics
where name like "%lock%";
name	status
lock_deadlocks	disabled
lock_timeouts	disabled
lock_rec_lock_waits	disabled
lock_table_lock_waits	disabled
lock_rec_lock_requests	disabled
lock_rec_lock_created	disabled
lock_rec_lock_removed	disabled
lock_rec_locks	disabled
lock_table_lock_created	disabled
lock_table_lock_removed	disabled
lock_table_locks	disabled
lock_row_lock_current_waits	disabled
lock_row_lock_time	disabled
lock_row_lock_time_max	disabled
lock_row_lock_waits	disabled
lock_row_lock_time_avg	disabled
set global innodb_monitor_enable = "%lock*";
ERROR 42000: Variable 'innodb_monitor_enable' can't be set to the value of '%lock*'
set global innodb_monitor_enable="%%%%%%%%%%%%%%%%%%%%%%%%%%%";
select name from information_schema.innodb_metrics where not enabled;
name
set global innodb_monitor_disable="%%%%%";
select name from information_schema.innodb_metrics where enabled;
name
set global innodb_monitor_enable="%";
select name from information_schema.innodb_metrics where not enabled;
name
set global innodb_monitor_disable="%_%";
select name from information_schema.innodb_metrics where enabled;
name
set global innodb_monitor_enable="log%%%%";
select name from information_schema.innodb_metrics
where enabled != (name like "log%");
name
set global innodb_monitor_enable="os_%a_fs_ncs";
set global innodb_monitor_enable="os%pending%";
select name, if(enabled,'enabled','disabled') status
from information_schema.innodb_metrics
where name like "os%";
name	status
os_data_reads	disabled
os_data_writes	disabled
os_data_fsyncs	enabled
os_pending_reads	enabled
os_pending_writes	enabled
os_log_bytes_written	disabled
set global innodb_monitor_enable="";
ERROR 42000: Variable 'innodb_monitor_enable' can't be set to the value of ''
set global innodb_monitor_enable="_";
ERROR 42000: Variable 'innodb_monitor_enable' can't be set to the value of '_'
SET global innodb_monitor_disable = module_metadata;
SET global innodb_monitor_reset_all = module_metadata;
set global innodb_monitor_enable = metadata_table_handles_opened;
create table monitor_test(col int) engine = innodb;
select * from monitor_test;
col
select name, max_count, min_count, count,
max_count_reset, min_count_reset, count_reset,
if(enabled,'enabled','disabled') status
from information_schema.innodb_metrics
where name = "metadata_table_handles_opened";
name	max_count	min_count	count	max_count_reset	min_count_reset	count_reset	status
metadata_table_handles_opened	1	NULL	1	1	NULL	1	enabled
set global innodb_monitor_reset = metadata_table_handles_opened;
select name, max_count, min_count, count,
max_count_reset, min_count_reset, count_reset,
if(enabled,'enabled','disabled') status
from information_schema.innodb_metrics
where name = "metadata_table_handles_opened";
name	max_count	min_count	count	max_count_reset	min_count_reset	count_reset	status
metadata_table_handles_opened	1	NULL	1	NULL	NULL	0	enabled
drop table monitor_test;
create table monitor_test(col int) engine = innodb;
select * from monitor_test;
col
select name, max_count, min_count, count,
max_count_reset, min_count_reset, count_reset,
if(enabled,'enabled','disabled') status
from information_schema.innodb_metrics
where name = "metadata_table_handles_opened";
name	max_count	min_count	count	max_count_reset	min_count_reset	count_reset	status
metadata_table_handles_opened	2	NULL	2	1	NULL	1	enabled
set global innodb_monitor_reset_all = metadata_table_handles_opened;
select name, max_count, min_count, count,
max_count_reset, min_count_reset, count_reset,
if(enabled,'enabled','disabled') status
from information_schema.innodb_metrics
where name = "metadata_table_handles_opened";
name	max_count	min_count	count	max_count_reset	min_count_reset	count_reset	status
metadata_table_handles_opened	2	NULL	2	1	NULL	1	enabled
set global innodb_monitor_disable = metadata_table_handles_opened;
set global innodb_monitor_reset = metadata_table_handles_opened;
select name, max_count, min_count, count,
max_count_reset, min_count_reset, count_reset,
if(enabled,'enabled','disabled') status
from information_schema.innodb_metrics
where name = "metadata_table_handles_opened";
name	max_count	min_count	count	max_count_reset	min_count_reset	count_reset	status
metadata_table_handles_opened	2	NULL	2	NULL	NULL	0	disabled
drop table monitor_test;
create table monitor_test(col int) engine = innodb;
select * from monitor_test;
col
select name, max_count, min_count, count,
max_count_reset, min_count_reset, count_reset,
if(enabled,'enabled','disabled') status
from information_schema.innodb_metrics
where name = "metadata_table_handles_opened";
name	max_count	min_count	count	max_count_reset	min_count_reset	count_reset	status
metadata_table_handles_opened	2	NULL	2	NULL	NULL	0	disabled
set global innodb_monitor_reset_all = metadata_table_handles_opened;
select name, max_count, min_count, count,
max_count_reset, min_count_reset, count_reset,
if(enabled,'enabled','disabled') status
from information_schema.innodb_metrics
where name = "metadata_table_handles_opened";
name	max_count	min_count	count	max_count_reset	min_count_reset	count_reset	status
metadata_table_handles_opened	NULL	NULL	0	NULL	NULL	0	disabled
set global innodb_monitor_enable = metadata_table_handles_opened;
drop table monitor_test;
create table monitor_test(col int) engine = innodb stats_persistent=0;
select * from monitor_test;
col
select name, max_count, min_count, count,
max_count_reset, min_count_reset, count_reset,
if(enabled,'enabled','disabled') status
from information_schema.innodb_metrics
where name like "metadata%";
name	max_count	min_count	count	max_count_reset	min_count_reset	count_reset	status
metadata_table_handles_opened	1	NULL	1	1	NULL	1	enabled
set global innodb_monitor_disable = module_metadata;
set global innodb_monitor_reset = module_metadata;
select name, max_count, min_count, count,
max_count_reset, min_count_reset, count_reset,
if(enabled,'enabled','disabled') status
from information_schema.innodb_metrics
where name like "metadata%";
name	max_count	min_count	count	max_count_reset	min_count_reset	count_reset	status
metadata_table_handles_opened	1	NULL	1	NULL	NULL	0	disabled
set global innodb_monitor_reset_all = module_metadata;
select name, max_count, min_count, count,
max_count_reset, min_count_reset, count_reset,
if(enabled,'enabled','disabled') status
from information_schema.innodb_metrics
where name like "metadata%";
name	max_count	min_count	count	max_count_reset	min_count_reset	count_reset	status
metadata_table_handles_opened	NULL	NULL	0	NULL	NULL	0	disabled
set global innodb_monitor_enable = module_trx;
begin;
insert into monitor_test values(9);
commit;
begin;
insert into monitor_test values(9);
rollback;
select name, max_count, min_count, count,
max_count_reset, min_count_reset, count_reset,
if(enabled,'enabled','disabled') status
from information_schema.innodb_metrics
where name='trx_rollbacks';
name	max_count	min_count	count	max_count_reset	min_count_reset	count_reset	status
trx_rollbacks	1	NULL	1	1	NULL	1	enabled
set global innodb_monitor_disable = module_trx;
drop table monitor_test;
set global innodb_monitor_enable = file_num_open_files;
select name, max_count, min_count, count,
max_count_reset, min_count_reset, count_reset,
if(enabled,'enabled','disabled') status
from information_schema.innodb_metrics
where name like "file_num_open_files";
name	max_count	min_count	count	max_count_reset	min_count_reset	count_reset	status
file_num_open_files	#	#	#	#	#	#	enabled
set global innodb_monitor_disable = file_num_open_files;
set global innodb_monitor_enable = "icp%";
create table monitor_test(a char(3), b int, c char(2),
primary key (a(1), c(1)), key(b)) engine = innodb;
insert into monitor_test values("13", 2, "aa");
select a from monitor_test where b < 1 for update;
a
select name, count from information_schema.innodb_metrics
where name like "icp%";
name	count
icp_attempts	1
icp_no_match	0
icp_out_of_range	1
icp_match	0
select a from monitor_test where b < 3 for update;
a
13
select name, count from information_schema.innodb_metrics
where name like "icp%";
name	count
icp_attempts	2
icp_no_match	0
icp_out_of_range	1
icp_match	1
drop table monitor_test;
set global innodb_monitor_disable = All;
set global innodb_monitor_reset_all = all;
select 1 from `information_schema`.`INNODB_METRICS`
where case (1) when (1) then (AVG_COUNT_RESET) else (1) end;
1
set global innodb_monitor_enable = default;
set global innodb_monitor_disable = default;
set global innodb_monitor_reset = default;
set global innodb_monitor_reset_all = default;
#
# Bug#22576241 SETTING INNODB_MONITOR_ENABLE TO ALL DOES NOT ENABLE ALL
# MONITORS
#
CREATE TABLE t1 (a INT PRIMARY KEY) ENGINE=InnoDB STATS_PERSISTENT=0;
SELECT /*1*/ NAME, COUNT > 0 FROM INFORMATION_SCHEMA.INNODB_METRICS WHERE NAME
LIKE 'buffer_page_written_index_leaf';
NAME	COUNT > 0
buffer_page_written_index_leaf	0
SET GLOBAL innodb_monitor_enable='module_buffer_page';
INSERT INTO t1 VALUES (1), (2), (3), (4);
FLUSH TABLES t1 FOR EXPORT;
UNLOCK TABLES;
SELECT /*2*/ NAME, COUNT > 0 FROM INFORMATION_SCHEMA.INNODB_METRICS WHERE NAME
LIKE 'buffer_page_written_index_leaf';
NAME	COUNT > 0
buffer_page_written_index_leaf	1
SET GLOBAL innodb_monitor_disable='module_buffer_page';
SET GLOBAL innodb_monitor_reset_all='module_buffer_page';
SELECT /*3*/ NAME, COUNT > 0 FROM INFORMATION_SCHEMA.INNODB_METRICS WHERE NAME
LIKE 'buffer_page_written_index_leaf';
NAME	COUNT > 0
buffer_page_written_index_leaf	0
SET GLOBAL innodb_monitor_enable='%';
SET GLOBAL innodb_monitor_reset_all= '%', innodb_compression_algorithm= foo;
ERROR 42000: Variable 'innodb_compression_algorithm' can't be set to the value of 'foo'
INSERT INTO t1 VALUES (5), (6), (7), (8);
FLUSH TABLES t1 FOR EXPORT;
UNLOCK TABLES;
SELECT /*4*/ NAME, COUNT > 0 FROM INFORMATION_SCHEMA.INNODB_METRICS WHERE NAME
LIKE 'buffer_page_written_index_leaf';
NAME	COUNT > 0
buffer_page_written_index_leaf	1
SET GLOBAL innodb_monitor_disable='%';
SET GLOBAL innodb_monitor_reset_all='%';
SELECT /*5*/ NAME, COUNT > 0 FROM INFORMATION_SCHEMA.INNODB_METRICS WHERE NAME
LIKE 'buffer_page_written_index_leaf';
NAME	COUNT > 0
buffer_page_written_index_leaf	0
SET GLOBAL innodb_monitor_enable='ALL';
INSERT INTO t1 VALUES (9), (10), (11), (12);
FLUSH TABLES t1 FOR EXPORT;
UNLOCK TABLES;
SELECT /*6*/ NAME, COUNT > 0 FROM INFORMATION_SCHEMA.INNODB_METRICS WHERE NAME
LIKE 'buffer_page_written_index_leaf';
NAME	COUNT > 0
buffer_page_written_index_leaf	1
DROP TABLE t1;
CREATE TABLE fl0 (
id INT NOT NULL PRIMARY KEY
) ENGINE = InnoDB;
CREATE TABLE fl1 (
id INT NOT NULL PRIMARY KEY,
fl0_id INT,
CONSTRAINT `fkl0`
    FOREIGN KEY (fl0_id) REFERENCES fl0 (id)
ON DELETE CASCADE
ON UPDATE RESTRICT
) ENGINE = InnoDB;
CREATE TABLE fl2 (
id INT NOT NULL PRIMARY KEY,
fl1_id INT,
CONSTRAINT `fkl1`
    FOREIGN KEY (fl1_id) REFERENCES fl1 (id)
ON DELETE CASCADE
ON UPDATE SET NULL
) ENGINE = InnoDB;
INSERT INTO fl0 VALUES (1000);
INSERT INTO fl1 VALUES (500, 1000), (1500, 1000);
INSERT INTO fl2 VALUES (200, 500), (800, 500), (1200, 1500), (1800, 1500);
CREATE TABLE t1(id INT PRIMARY KEY, a INT, b CHAR(1), UNIQUE KEY u(a,b))
ENGINE=InnoDB;
SET @start = (SELECT COUNT FROM INFORMATION_SCHEMA.INNODB_METRICS WHERE NAME
= 'lock_rec_lock_created');
BEGIN;
INSERT INTO t1 VALUES(1,1,'a'),(2,9999,'b'),(3,10000,'c'),(4,4,'d');
DELETE FROM t1 WHERE a = 9999 AND b='b';
COMMIT;
SET @end = (SELECT COUNT FROM INFORMATION_SCHEMA.INNODB_METRICS WHERE NAME
= 'lock_rec_lock_created');
SELECT @end - @start;
@end - @start
1
# Records must not be S/X-locked if a table is X-locked.
SET @start = @end;
SET autocommit = 0;
BEGIN;
LOCK TABLE t1 WRITE;
SELECT * FROM t1;
id	a	b
1	1	a
4	4	d
3	10000	c
SELECT * FROM t1 WHERE a>=10000;
id	a	b
3	10000	c
SELECT * FROM t1 FOR UPDATE;
id	a	b
1	1	a
4	4	d
3	10000	c
SELECT * FROM t1 WHERE a>=10000 FOR UPDATE;
id	a	b
3	10000	c
UPDATE t1 SET b = 'b' WHERE id = 4;
UPDATE t1 SET b = 'b' WHERE a = 10000;
REPLACE INTO t1 VALUES (4,3,'a');
INSERT INTO t1 VALUES (3,1,'e') ON DUPLICATE KEY UPDATE b = 'b';
INSERT INTO t1 VALUES (5,5,'e');
DELETE FROM t1 WHERE a = 1 AND b='a';
DELETE FROM t1;
COMMIT;
UNLOCK TABLES;
SET @end = (SELECT COUNT FROM INFORMATION_SCHEMA.INNODB_METRICS WHERE NAME = 'lock_rec_lock_created');
SELECT @end - @start;
@end - @start
0
# Records must not be S-locked if a table is S-locked.
SET @start = @end;
BEGIN;
LOCK TABLE t1 WRITE;
INSERT INTO t1 VALUES(1,1,'a'),(2,9999,'b'),(3,10000,'c'),(4,4,'d');
DELETE FROM t1 WHERE a = 9999 AND b='b';
COMMIT;
UNLOCK TABLES;
BEGIN;
LOCK TABLE t1 READ;
SELECT * FROM t1 LOCK IN SHARE MODE;
id	a	b
1	1	a
4	4	d
3	10000	c
SELECT * FROM t1 WHERE a>=10000 LOCK IN SHARE MODE;
id	a	b
3	10000	c
COMMIT;
UNLOCK TABLES;
SET @end = (SELECT COUNT FROM INFORMATION_SCHEMA.INNODB_METRICS WHERE NAME = 'lock_rec_lock_created');
SELECT @end - @start;
@end - @start
0
# Records must not be S-locked for foreign keys enforcement
SET @start = @end;
BEGIN;
LOCK TABLE fl0 READ, fl1 READ, fl2 WRITE;
INSERT INTO fl2 VALUES (300, 500), (700, 500), (1300, 1500), (1700, 1500);
SELECT * FROM fl1 LOCK IN SHARE MODE;
id	fl0_id
500	1000
1500	1000
COMMIT;
UNLOCK TABLES;
SET @end = (SELECT COUNT FROM INFORMATION_SCHEMA.INNODB_METRICS WHERE NAME = 'lock_rec_lock_created');
SELECT @end - @start;
@end - @start
0
# Records must not be X-locked for foreign keys cascade
SET @start = @end;
BEGIN;
LOCK TABLE fl0 READ, fl1 WRITE, fl2 WRITE;
DELETE FROM fl1 WHERE id = 1500;
UPDATE fl1 SET id = 2500 WHERE id = 500;
COMMIT;
UNLOCK TABLES;
SET @end = (SELECT COUNT FROM INFORMATION_SCHEMA.INNODB_METRICS WHERE NAME = 'lock_rec_lock_created');
SELECT @end - @start;
@end - @start
0
SET autocommit = default;
DROP TABLE t1;
DROP TABLE fl2;
DROP TABLE fl1;
DROP TABLE fl0;
set global innodb_monitor_disable = 'adaptive\\_hash\\_p%';
set global innodb_monitor_disable = 'adaptive\\_hash\\_r%';
set global innodb_monitor_disable = 'buffer\\_LRU\\_batch\\_n%';
set global innodb_monitor_disable = 'buffer\\_LRU\\_batch\\_s%';
set global innodb_monitor_disable = 'buffer\\_LRU\\_g%';
set global innodb_monitor_disable = 'buffer\\_LRU\\_s%';
set global innodb_monitor_disable = 'buffer\\_LRU\\_u%';
set global innodb_monitor_disable = 'buffer\\_f%';
set global innodb_monitor_disable = 'buffer\\_page\\_%';
set global innodb_monitor_disable = 'c%';
set global innodb_monitor_disable = 'ddl%';
set global innodb_monitor_disable = 'icp%';
set global innodb_monitor_disable = 'index\\_p%';
set global innodb_monitor_disable = 'innodb\\_di%';
set global innodb_monitor_disable = 'innodb\\_l%';
set global innodb_monitor_disable = 'innodb\\_m%';
set global innodb_monitor_disable = 'lock\\_re%';
set global innodb_monitor_disable = 'lock\\_ta%';
set global innodb_monitor_disable = 'log%';
set global innodb_monitor_disable = 'm%';
set global innodb_monitor_disable = 'p%';
set global innodb_monitor_disable = 't%';
set global innodb_monitor_enable = 'log\\_w%';
set global innodb_monitor_enable = 'trx_rseg_history_len';
set global innodb_monitor_enable = 'trx_undo_slots_cached';
set global innodb_monitor_enable=default;
Warnings:
Warning	1230	Default value is not defined for this set option. Please specify correct counter or module name.
set global innodb_monitor_disable=default;
Warnings:
Warning	1230	Default value is not defined for this set option. Please specify correct counter or module name.
set global innodb_monitor_reset_all=default;
Warnings:
Warning	1230	Default value is not defined for this set option. Please specify correct counter or module name.
select name, orig.enabled, new.enabled from
orig_innodb_metrics orig join information_schema.innodb_metrics new using(name)
where orig.enabled != new.enabled;
name	enabled	enabled