CREATE DATABASE unlocked;
CREATE TABLE unlocked.t1(a INT PRIMARY KEY) ENGINE=INNODB STATS_PERSISTENT=0;
CREATE DATABASE locked;
CREATE TABLE locked.t1(a INT PRIMARY KEY) ENGINE=INNODB STATS_PERSISTENT=1;
CREATE TABLE innodb_stats_drop_locked (c INT, KEY c_key (c))
ENGINE=INNODB STATS_PERSISTENT=1;
ANALYZE TABLE innodb_stats_drop_locked;
Table	Op	Msg_type	Msg_text
test.innodb_stats_drop_locked	analyze	status	Engine-independent statistics collected
test.innodb_stats_drop_locked	analyze	status	OK
BEGIN;
SELECT table_name FROM mysql.innodb_table_stats
WHERE table_name='innodb_stats_drop_locked'
FOR UPDATE;
table_name
innodb_stats_drop_locked
SELECT table_name FROM mysql.innodb_index_stats
WHERE table_name='innodb_stats_drop_locked'
FOR UPDATE;
table_name
innodb_stats_drop_locked
innodb_stats_drop_locked
innodb_stats_drop_locked
innodb_stats_drop_locked
innodb_stats_drop_locked
innodb_stats_drop_locked
innodb_stats_drop_locked
connect  con1,localhost,root,,;
SET innodb_lock_wait_timeout=1;
ALTER TABLE innodb_stats_drop_locked DROP INDEX c_key;
ERROR HY000: Lock wait timeout exceeded; try restarting transaction
SHOW CREATE TABLE innodb_stats_drop_locked;
Table	Create Table
innodb_stats_drop_locked	CREATE TABLE `innodb_stats_drop_locked` (
  `c` int(11) DEFAULT NULL,
  KEY `c_key` (`c`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci STATS_PERSISTENT=1
DROP TABLE innodb_stats_drop_locked;
ERROR HY000: Lock wait timeout exceeded; try restarting transaction
DROP DATABASE unlocked;
DROP DATABASE locked;
ERROR HY000: Lock wait timeout exceeded; try restarting transaction
disconnect con1;
connection default;
COMMIT;
DROP DATABASE locked;
SELECT table_name FROM mysql.innodb_table_stats
WHERE table_name='innodb_stats_drop_locked';
table_name
innodb_stats_drop_locked
SELECT table_name FROM mysql.innodb_index_stats
WHERE table_name='innodb_stats_drop_locked';
table_name
innodb_stats_drop_locked
innodb_stats_drop_locked
innodb_stats_drop_locked
innodb_stats_drop_locked
innodb_stats_drop_locked
innodb_stats_drop_locked
innodb_stats_drop_locked
ALTER TABLE innodb_stats_drop_locked DROP INDEX c_key;
SELECT table_name FROM mysql.innodb_index_stats
WHERE table_name='innodb_stats_drop_locked';
table_name
innodb_stats_drop_locked
innodb_stats_drop_locked
innodb_stats_drop_locked
DROP TABLE innodb_stats_drop_locked;
SELECT table_name FROM mysql.innodb_table_stats
WHERE table_name='innodb_stats_drop_locked';
table_name
SELECT table_name FROM mysql.innodb_index_stats
WHERE table_name='innodb_stats_drop_locked';
table_name