SELECT @@have_symlink;
@@have_symlink
DISABLED
CREATE TABLE t1(a INT, KEY(a)) ENGINE=InnoDB DATA DIRECTORY '$MYSQL_TMP_DIR' INDEX DIRECTORY '$MYSQL_TMP_DIR';
Warnings:
Warning	1618	DATA DIRECTORY option ignored
Note	1618	INDEX DIRECTORY option ignored
DROP TABLE t1;
CREATE TABLE t1(a INT, KEY(a)) ENGINE=InnoDB;
ALTER TABLE t1 DATA DIRECTORY '$MYSQL_TMP_DIR' INDEX DIRECTORY '$MYSQL_TMP_DIR';
Warnings:
Warning	1618	DATA DIRECTORY option ignored
Warning	1618	INDEX DIRECTORY option ignored
SHOW CREATE TABLE t1;
Table	Create Table
t1	CREATE TABLE `t1` (
  `a` int(11) DEFAULT NULL,
  KEY `a` (`a`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci
DROP TABLE t1;
# restart: --symbolic-links
CREATE TABLE t1(a INT PRIMARY KEY, b INT) ENGINE=InnoDB
DATA DIRECTORY '$MYSQL_TMP_DIR' INDEX DIRECTORY '$MYSQL_TMP_DIR/other';
Warnings:
Note	1618	INDEX DIRECTORY option ignored
CREATE TABLE t2(a INT PRIMARY KEY, b INT) ENGINE=InnoDB
DATA DIRECTORY '$MYSQL_TMP_DIR' INDEX DIRECTORY '$MYSQL_TMP_DIR';
TRUNCATE TABLE t1;
TRUNCATE TABLE t2;
# restart
ALTER TABLE t1 FORCE, ALGORITHM=INPLACE;
ALTER TABLE t2 FORCE, ALGORITHM=COPY;
OPTIMIZE TABLE t1;
Table	Op	Msg_type	Msg_text
test.t1	optimize	note	Table does not support optimize, doing recreate + analyze instead
test.t1	optimize	status	OK
t1.ibd
t2.ibd
DROP TABLE t2;
RENAME TABLE t1 TO t2;
ALTER TABLE t2 ADD UNIQUE INDEX(b), RENAME TO t3;
Warnings:
Warning	1618	DATA DIRECTORY option ignored
ALTER TABLE t3 RENAME TO t2;
ALTER TABLE t2 DROP INDEX b, RENAME TO t1;
Warnings:
Warning	1618	DATA DIRECTORY option ignored
ALTER TABLE t1 CHANGE b c INT;
Warnings:
Warning	1618	DATA DIRECTORY option ignored
ALTER TABLE t1 CHANGE c b INT NOT NULL;
Warnings:
Warning	1618	DATA DIRECTORY option ignored
t1.ibd
TRUNCATE TABLE t1;
DROP TABLE t1;