database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2026-10-23 18:49:29 +03:00
Code Activity

MDEV-17598: Store DB_TRX_ID in secondary index leaf records

Browse Source 
Added innodb_sec_trx_id_debug variable to enable the secondary
index which has DB_TRX_ID as a part of the record.
This commit is contained in:
Thirunarayanan Balathandayuthapani
2026-10-19 11:08:50 +05:30
parent b302a2ecf6
commit 6eda7faa5e
6 changed files with 577 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

102
mysql-test/suite/innodb/r/sec_index_trx_id_debug.result Normal file
View File

@@ -0,0 +1,102 @@
# Old format (default)
CREATE TABLE t1 (a INT PRIMARY KEY, b INT, c VARCHAR(20), KEY(b), UNIQUE KEY(c))
ENGINE=InnoDB;
SELECT i.NAME, i.TYPE FROM information_schema.INNODB_SYS_INDEXES i
JOIN information_schema.INNODB_SYS_TABLES t USING (TABLE_ID)
WHERE t.NAME='test/t1' ORDER BY i.NAME;
NAME TYPE
b 0
c 2
PRIMARY 3
DROP TABLE t1;
# New format
SET GLOBAL innodb_sec_index_trx_id_debug=ON;
CREATE TABLE t1 (a INT PRIMARY KEY, b INT, c VARCHAR(20), KEY(b), UNIQUE KEY(c))
ENGINE=InnoDB;
SELECT i.NAME, i.TYPE FROM information_schema.INNODB_SYS_INDEXES i
JOIN information_schema.INNODB_SYS_TABLES t USING (TABLE_ID)
WHERE t.NAME='test/t1' ORDER BY i.NAME;
NAME TYPE
b 4
c 6
PRIMARY 3
SET GLOBAL innodb_sec_index_trx_id_debug=OFF;
INSERT INTO t1 SELECT seq, seq%10, CONCAT('v',seq) FROM seq_1_to_2000;
SELECT COUNT(*), SUM(b) FROM t1 FORCE INDEX(b) WHERE b>=5;
COUNT(*) SUM(b)
1000 7000
SELECT COUNT(*) FROM t1 FORCE INDEX(c);
COUNT(*)
2000
CHECK TABLE t1 EXTENDED;
Table Op Msg_type Msg_text
test.t1 check status OK
# UPDATE, DELETE, and rollback
BEGIN;
UPDATE t1 SET b=b+100 WHERE a<=100;
DELETE FROM t1 WHERE a BETWEEN 101 AND 200;
SELECT COUNT(*) FROM t1 FORCE INDEX(b) WHERE b>=100;
COUNT(*)
100
ROLLBACK;
SELECT COUNT(*) FROM t1 FORCE INDEX(b) WHERE b>=100;
COUNT(*)
0
SELECT COUNT(*) FROM t1 FORCE INDEX(b);
COUNT(*)
2000
UPDATE t1 SET b=b+1 WHERE a<=100;
DELETE FROM t1 WHERE a BETWEEN 101 AND 200;
INSERT INTO t1 VALUES (101,1,'v101');
CHECK TABLE t1 EXTENDED;
Table Op Msg_type Msg_text
test.t1 check status OK
# Consistent read of an old snapshot while another connection modifies
connect con1,localhost,root,,;
START TRANSACTION WITH CONSISTENT SNAPSHOT;
connection default;
UPDATE t1 SET b=999 WHERE a BETWEEN 1 AND 50;
DELETE FROM t1 WHERE a BETWEEN 51 AND 100;
connection con1;
SELECT COUNT(*) FROM t1 FORCE INDEX(b) WHERE b=999;
COUNT(*)
0
SELECT COUNT(*), SUM(b) FROM t1 FORCE INDEX(b) WHERE a<=100;
COUNT(*) SUM(b)
100 550
COMMIT;
disconnect con1;
connection default;
# Mixed formats in one table: ADD INDEX creates the old format
ALTER TABLE t1 ADD KEY(c, b);
SELECT i.NAME, i.TYPE FROM information_schema.INNODB_SYS_INDEXES i
JOIN information_schema.INNODB_SYS_TABLES t USING (TABLE_ID)
WHERE t.NAME='test/t1' ORDER BY i.NAME;
NAME TYPE
b 4
c 6
c_2 0
PRIMARY 3
SELECT COUNT(*) FROM t1 FORCE INDEX(c_2);
COUNT(*)
1851
CHECK TABLE t1 EXTENDED;
Table Op Msg_type Msg_text
test.t1 check status OK
# Restart keeps both formats
# restart
SELECT i.NAME, i.TYPE FROM information_schema.INNODB_SYS_INDEXES i
JOIN information_schema.INNODB_SYS_TABLES t USING (TABLE_ID)
WHERE t.NAME='test/t1' ORDER BY i.NAME;
NAME TYPE
b 4
c 6
c_2 0
PRIMARY 3
CHECK TABLE t1 EXTENDED;
Table Op Msg_type Msg_text
test.t1 check status OK
SELECT COUNT(*) FROM t1 FORCE INDEX(b);
COUNT(*)
1851
DROP TABLE t1;

204
mysql-test/suite/innodb/r/sec_index_trx_locking.result Normal file
View File

@@ -0,0 +1,204 @@
#
# MDEV-17598: implicit locks, consistent reads and purge on a secondary
# index whose records end with DB_TRX_ID, on an "orders" table.
#
SET GLOBAL innodb_sec_index_trx_id_debug=ON;
CREATE TABLE orders (
id INT PRIMARY KEY,
customer INT NOT NULL,
status VARCHAR(10) NOT NULL,
amount INT NOT NULL,
KEY(customer)
) ENGINE=InnoDB;
CREATE TABLE events (
id INT PRIMARY KEY,
a INT NOT NULL,
b INT NOT NULL,
total INT AS (a+b) VIRTUAL,
KEY(total)
) ENGINE=InnoDB;
SET GLOBAL innodb_sec_index_trx_id_debug=OFF;
# Both secondary indexes have the new format (TYPE bit 4)
SELECT t.NAME, i.NAME, (i.TYPE & 4) AS new_format
FROM information_schema.INNODB_SYS_INDEXES i
JOIN information_schema.INNODB_SYS_TABLES t USING (TABLE_ID)
WHERE t.NAME IN ('test/orders','test/events') AND i.NAME IN ('customer','total')
ORDER BY t.NAME;
NAME NAME new_format
test/events total 4
test/orders customer 4
INSERT INTO orders SELECT seq, seq%5, 'new', seq FROM seq_1_to_100;
connect con1,localhost,root,,;
connect con2,localhost,root,,;
#
# 1. Locks: a transaction moves order 7 from customer 2 to customer 9
#
connection con1;
BEGIN;
UPDATE orders SET customer=9 WHERE id=7;
connection con2;
SET SESSION innodb_lock_wait_timeout=1;
# (9,7) was inserted by con1 and is locked only implicitly
SELECT id FROM orders WHERE customer=9 FOR UPDATE;
ERROR HY000: Lock wait timeout exceeded; try restarting transaction
# (2,7) was delete-marked by con1
SELECT id FROM orders WHERE customer=2 FOR UPDATE;
ERROR HY000: Lock wait timeout exceeded; try restarting transaction
# Other orders are not locked
SELECT id FROM orders WHERE customer=3 AND id<=8 FOR UPDATE;
id
3
8
SET SESSION innodb_lock_wait_timeout=50;
# The waiter gets the lock when the holder commits
SELECT id FROM orders WHERE customer=9 FOR UPDATE;
connection default;
connection con1;
COMMIT;
connection con2;
id
7
# ... and when the holder rolls back
connection con1;
BEGIN;
UPDATE orders SET customer=8 WHERE id=12;
connection con2;
SELECT id FROM orders WHERE customer=8 FOR UPDATE;
connection default;
connection con1;
ROLLBACK;
connection con2;
id
SELECT COUNT(*) AS customer2_orders FROM orders FORCE INDEX(customer)
WHERE customer=2;
customer2_orders
19
#
# 2. Consistent reads: a report runs while orders change
#
connection con1;
START TRANSACTION WITH CONSISTENT SNAPSHOT;
SELECT customer, COUNT(*) FROM orders FORCE INDEX(customer)
GROUP BY customer ORDER BY customer;
customer COUNT(*)
0 20
1 20
2 19
3 20
4 20
9 1
connection default;
# customer 4 -> 0 (10 orders), customer 1 loses 10 orders, 2 new orders
# for customer 5, and a change of a column that is not in the index
UPDATE orders SET customer=0 WHERE customer=4 AND id<=50;
DELETE FROM orders WHERE customer=1 AND id>50;
INSERT INTO orders VALUES (101,5,'new',101), (102,5,'new',102);
UPDATE orders SET status='paid' WHERE customer=3;
connection con1;
# The report still sees the old orders
SELECT customer, COUNT(*) FROM orders FORCE INDEX(customer)
GROUP BY customer ORDER BY customer;
customer COUNT(*)
0 20
1 20
2 19
3 20
4 20
9 1
SELECT SUM(amount) FROM orders FORCE INDEX(customer) WHERE customer=4;
SUM(amount)
1030
SELECT COUNT(*) FROM orders FORCE INDEX(customer)
WHERE customer=3 AND status='new';
COUNT(*)
20
COMMIT;
# A new transaction sees the changes
SELECT customer, COUNT(*) FROM orders FORCE INDEX(customer)
GROUP BY customer ORDER BY customer;
customer COUNT(*)
0 30
1 10
2 19
3 20
4 10
5 2
9 1
SELECT COUNT(*) FROM orders FORCE INDEX(customer)
WHERE customer=3 AND status='paid';
COUNT(*)
20
#
# 3. Purge
#
DELETE FROM orders WHERE customer IN (1,5);
InnoDB 0 transactions not purged
CHECK TABLE orders EXTENDED;
Table Op Msg_type Msg_text
test.orders check status OK
SELECT COUNT(*) FROM orders;
COUNT(*)
80
# An old read view keeps the deleted orders of customer 4 alive
connection con1;
START TRANSACTION WITH CONSISTENT SNAPSHOT;
connection default;
DELETE FROM orders WHERE customer=4;
connection con1;
SELECT COUNT(*) AS customer4_in_old_view FROM orders FORCE INDEX(customer)
WHERE customer=4;
customer4_in_old_view
10
COMMIT;
connection default;
InnoDB 0 transactions not purged
SELECT COUNT(*) AS customer4_now FROM orders FORCE INDEX(customer)
WHERE customer=4;
customer4_now
0
# An order that is deleted and re-created before purge must survive
connection con1;
START TRANSACTION WITH CONSISTENT SNAPSHOT;
connection default;
DELETE FROM orders WHERE id=3;
INSERT INTO orders VALUES (3,3,'new',3);
connection con1;
COMMIT;
connection default;
InnoDB 0 transactions not purged
SELECT id, status FROM orders FORCE INDEX(customer) WHERE customer=3 AND id=3;
id status
3 new
SELECT customer, COUNT(*) FROM orders FORCE INDEX(customer)
GROUP BY customer ORDER BY customer;
customer COUNT(*)
0 30
2 19
3 20
9 1
CHECK TABLE orders EXTENDED;
Table Op Msg_type Msg_text
test.orders check status OK
#
# 4. Purge of an index on a virtual column
#
INSERT INTO events (id,a,b) SELECT seq, seq, 0 FROM seq_1_to_50;
UPDATE events SET b=b+100 WHERE id<=20;
DELETE FROM events WHERE id>40;
InnoDB 0 transactions not purged
CHECK TABLE events EXTENDED;
Table Op Msg_type Msg_text
test.events check status OK
# 20 events with total = id+100, 40 events in all
SELECT COUNT(*), SUM(total) FROM events FORCE INDEX(total) WHERE total>=100;
COUNT(*) SUM(total)
20 2210
SELECT COUNT(*) FROM events FORCE INDEX(total);
COUNT(*)
40
connection con1;
disconnect con1;
connection con2;
disconnect con2;
connection default;
DROP TABLE orders, events;

65
mysql-test/suite/innodb/t/sec_index_trx_id_debug.test Normal file
View File

@@ -0,0 +1,65 @@
--source include/have_innodb.inc
--source include/have_sequence.inc
let $flag_query=
SELECT i.NAME, i.TYPE FROM information_schema.INNODB_SYS_INDEXES i
JOIN information_schema.INNODB_SYS_TABLES t USING (TABLE_ID)
WHERE t.NAME='test/t1' ORDER BY i.NAME;
--echo # Old format (default)
CREATE TABLE t1 (a INT PRIMARY KEY, b INT, c VARCHAR(20), KEY(b), UNIQUE KEY(c))
ENGINE=InnoDB;
eval $flag_query;
DROP TABLE t1;
--echo # New format
SET GLOBAL innodb_sec_index_trx_id_debug=ON;
CREATE TABLE t1 (a INT PRIMARY KEY, b INT, c VARCHAR(20), KEY(b), UNIQUE KEY(c))
ENGINE=InnoDB;
eval $flag_query;
SET GLOBAL innodb_sec_index_trx_id_debug=OFF;
INSERT INTO t1 SELECT seq, seq%10, CONCAT('v',seq) FROM seq_1_to_2000;
SELECT COUNT(*), SUM(b) FROM t1 FORCE INDEX(b) WHERE b>=5;
SELECT COUNT(*) FROM t1 FORCE INDEX(c);
CHECK TABLE t1 EXTENDED;
--echo # UPDATE, DELETE, and rollback
BEGIN;
UPDATE t1 SET b=b+100 WHERE a<=100;
DELETE FROM t1 WHERE a BETWEEN 101 AND 200;
SELECT COUNT(*) FROM t1 FORCE INDEX(b) WHERE b>=100;
ROLLBACK;
SELECT COUNT(*) FROM t1 FORCE INDEX(b) WHERE b>=100;
SELECT COUNT(*) FROM t1 FORCE INDEX(b);
UPDATE t1 SET b=b+1 WHERE a<=100;
DELETE FROM t1 WHERE a BETWEEN 101 AND 200;
INSERT INTO t1 VALUES (101,1,'v101');
CHECK TABLE t1 EXTENDED;
--echo # Consistent read of an old snapshot while another connection modifies
connect (con1,localhost,root,,);
START TRANSACTION WITH CONSISTENT SNAPSHOT;
connection default;
UPDATE t1 SET b=999 WHERE a BETWEEN 1 AND 50;
DELETE FROM t1 WHERE a BETWEEN 51 AND 100;
connection con1;
SELECT COUNT(*) FROM t1 FORCE INDEX(b) WHERE b=999;
SELECT COUNT(*), SUM(b) FROM t1 FORCE INDEX(b) WHERE a<=100;
COMMIT;
disconnect con1;
connection default;
--echo # Mixed formats in one table: ADD INDEX creates the old format
ALTER TABLE t1 ADD KEY(c, b);
eval $flag_query;
SELECT COUNT(*) FROM t1 FORCE INDEX(c_2);
CHECK TABLE t1 EXTENDED;
--echo # Restart keeps both formats
--source include/restart_mysqld.inc
eval $flag_query;
CHECK TABLE t1 EXTENDED;
SELECT COUNT(*) FROM t1 FORCE INDEX(b);
DROP TABLE t1;

170
mysql-test/suite/innodb/t/sec_index_trx_locking.test Normal file
View File

@@ -0,0 +1,170 @@
--source include/have_innodb.inc
--source include/have_sequence.inc
--echo #
--echo # MDEV-17598: implicit locks, consistent reads and purge on a secondary
--echo # index whose records end with DB_TRX_ID, on an "orders" table.
--echo #
SET GLOBAL innodb_sec_index_trx_id_debug=ON;
CREATE TABLE orders (
id INT PRIMARY KEY,
customer INT NOT NULL,
status VARCHAR(10) NOT NULL,
amount INT NOT NULL,
KEY(customer)
) ENGINE=InnoDB;
CREATE TABLE events (
id INT PRIMARY KEY,
a INT NOT NULL,
b INT NOT NULL,
total INT AS (a+b) VIRTUAL,
KEY(total)
) ENGINE=InnoDB;
SET GLOBAL innodb_sec_index_trx_id_debug=OFF;
--echo # Both secondary indexes have the new format (TYPE bit 4)
SELECT t.NAME, i.NAME, (i.TYPE & 4) AS new_format
FROM information_schema.INNODB_SYS_INDEXES i
JOIN information_schema.INNODB_SYS_TABLES t USING (TABLE_ID)
WHERE t.NAME IN ('test/orders','test/events') AND i.NAME IN ('customer','total')
ORDER BY t.NAME;
# 100 orders, 20 for each of the customers 0..4
INSERT INTO orders SELECT seq, seq%5, 'new', seq FROM seq_1_to_100;
connect (con1,localhost,root,,);
connect (con2,localhost,root,,);
--echo #
--echo # 1. Locks: a transaction moves order 7 from customer 2 to customer 9
--echo #
connection con1;
BEGIN;
UPDATE orders SET customer=9 WHERE id=7;
connection con2;
SET SESSION innodb_lock_wait_timeout=1;
--echo # (9,7) was inserted by con1 and is locked only implicitly
--error ER_LOCK_WAIT_TIMEOUT
SELECT id FROM orders WHERE customer=9 FOR UPDATE;
--echo # (2,7) was delete-marked by con1
--error ER_LOCK_WAIT_TIMEOUT
SELECT id FROM orders WHERE customer=2 FOR UPDATE;
--echo # Other orders are not locked
SELECT id FROM orders WHERE customer=3 AND id<=8 FOR UPDATE;
SET SESSION innodb_lock_wait_timeout=50;
--echo # The waiter gets the lock when the holder commits
--send SELECT id FROM orders WHERE customer=9 FOR UPDATE
connection default;
let $wait_condition=
SELECT COUNT(*) = 1 FROM information_schema.INNODB_TRX
WHERE trx_state = 'LOCK WAIT';
--source include/wait_condition.inc
connection con1;
COMMIT;
connection con2;
reap;
--echo # ... and when the holder rolls back
connection con1;
BEGIN;
UPDATE orders SET customer=8 WHERE id=12;
connection con2;
--send SELECT id FROM orders WHERE customer=8 FOR UPDATE
connection default;
--source include/wait_condition.inc
connection con1;
ROLLBACK;
connection con2;
reap;
SELECT COUNT(*) AS customer2_orders FROM orders FORCE INDEX(customer)
WHERE customer=2;
--echo #
--echo # 2. Consistent reads: a report runs while orders change
--echo #
connection con1;
START TRANSACTION WITH CONSISTENT SNAPSHOT;
SELECT customer, COUNT(*) FROM orders FORCE INDEX(customer)
GROUP BY customer ORDER BY customer;
connection default;
--echo # customer 4 -> 0 (10 orders), customer 1 loses 10 orders, 2 new orders
--echo # for customer 5, and a change of a column that is not in the index
UPDATE orders SET customer=0 WHERE customer=4 AND id<=50;
DELETE FROM orders WHERE customer=1 AND id>50;
INSERT INTO orders VALUES (101,5,'new',101), (102,5,'new',102);
UPDATE orders SET status='paid' WHERE customer=3;
connection con1;
--echo # The report still sees the old orders
SELECT customer, COUNT(*) FROM orders FORCE INDEX(customer)
GROUP BY customer ORDER BY customer;
SELECT SUM(amount) FROM orders FORCE INDEX(customer) WHERE customer=4;
SELECT COUNT(*) FROM orders FORCE INDEX(customer)
WHERE customer=3 AND status='new';
COMMIT;
--echo # A new transaction sees the changes
SELECT customer, COUNT(*) FROM orders FORCE INDEX(customer)
GROUP BY customer ORDER BY customer;
SELECT COUNT(*) FROM orders FORCE INDEX(customer)
WHERE customer=3 AND status='paid';
--echo #
--echo # 3. Purge
--echo #
DELETE FROM orders WHERE customer IN (1,5);
--source include/wait_all_purged.inc
CHECK TABLE orders EXTENDED;
SELECT COUNT(*) FROM orders;
--echo # An old read view keeps the deleted orders of customer 4 alive
connection con1;
START TRANSACTION WITH CONSISTENT SNAPSHOT;
connection default;
DELETE FROM orders WHERE customer=4;
connection con1;
SELECT COUNT(*) AS customer4_in_old_view FROM orders FORCE INDEX(customer)
WHERE customer=4;
COMMIT;
connection default;
--source include/wait_all_purged.inc
SELECT COUNT(*) AS customer4_now FROM orders FORCE INDEX(customer)
WHERE customer=4;
--echo # An order that is deleted and re-created before purge must survive
connection con1;
START TRANSACTION WITH CONSISTENT SNAPSHOT;
connection default;
DELETE FROM orders WHERE id=3;
INSERT INTO orders VALUES (3,3,'new',3);
connection con1;
COMMIT;
connection default;
--source include/wait_all_purged.inc
SELECT id, status FROM orders FORCE INDEX(customer) WHERE customer=3 AND id=3;
SELECT customer, COUNT(*) FROM orders FORCE INDEX(customer)
GROUP BY customer ORDER BY customer;
CHECK TABLE orders EXTENDED;
--echo #
--echo # 4. Purge of an index on a virtual column
--echo #
INSERT INTO events (id,a,b) SELECT seq, seq, 0 FROM seq_1_to_50;
UPDATE events SET b=b+100 WHERE id<=20;
DELETE FROM events WHERE id>40;
--source include/wait_all_purged.inc
CHECK TABLE events EXTENDED;
--echo # 20 events with total = id+100, 40 events in all
SELECT COUNT(*), SUM(total) FROM events FORCE INDEX(total) WHERE total>=100;
SELECT COUNT(*) FROM events FORCE INDEX(total);
connection con1;
disconnect con1;
connection con2;
disconnect con2;
connection default;
DROP TABLE orders, events;

12
mysql-test/suite/sys_vars/r/sysvars_innodb.result
View File

@@ -1463,6 +1463,18 @@ NUMERIC_BLOCK_SIZE 0
ENUM_VALUE_LIST NULL
READ_ONLY NO
COMMAND_LINE_ARGUMENT OPTIONAL
VARIABLE_NAME INNODB_SEC_INDEX_TRX_ID_DEBUG
SESSION_VALUE NULL
DEFAULT_VALUE OFF
VARIABLE_SCOPE GLOBAL
VARIABLE_TYPE BOOLEAN
VARIABLE_COMMENT Testing aid: create the secondary indexes of new tables in the format where the leaf page records end with DB_TRX_ID. Not supported for ROW_FORMAT=REDUNDANT or COMPRESSED, temporary or FULLTEXT tables; ALTER TABLE ... ADD INDEX still creates the old format
NUMERIC_MIN_VALUE NULL
NUMERIC_MAX_VALUE NULL
NUMERIC_BLOCK_SIZE NULL
ENUM_VALUE_LIST OFF,ON
READ_ONLY NO
COMMAND_LINE_ARGUMENT OPTIONAL
VARIABLE_NAME INNODB_SNAPSHOT_ISOLATION
SESSION_VALUE ON
DEFAULT_VALUE ON

24
storage/innobase/handler/ha_innodb.cc
View File

@@ -206,6 +206,10 @@ extern uint srv_n_fil_crypt_iops;
my_bool innodb_evict_tables_on_commit_debug;
#endif
/** Create the secondary indexes of new tables in the
DICT_SEC_TRX_ID format. */
static my_bool innodb_sec_index_trx_id_debug;
#if defined(UNIV_DEBUG) || \
defined(INNODB_ENABLE_XAP_UNLOCK_UNMODIFIED_FOR_PRIMARY)
my_bool innodb_enable_xap_unlock_unmodified_for_primary_debug;
@@ -11153,6 +11157,17 @@ create_index(
ind_type |= DICT_UNIQUE;
}
if (innodb_sec_index_trx_id_debug
&& !(ind_type & DICT_CLUSTERED)
&& table->not_redundant()
&& !DICT_TF_GET_ZIP_SSIZE(table->flags)
&& !table->is_temporary()
&& !DICT_TF2_FLAG_IS_SET(
table,
DICT_TF2_FTS | DICT_TF2_FTS_HAS_DOC_ID)) {
ind_type |= DICT_SEC_TRX_ID;
}
field_lengths = (ulint*) my_malloc(PSI_INSTRUMENT_ME,
key->user_defined_key_parts * sizeof *
field_lengths, MYF(MY_FAE));
@@ -20467,6 +20482,14 @@ static MYSQL_SYSVAR_BOOL(enable_xap_unlock_unmodified_for_primary_debug,
#endif /* defined(UNIV_DEBUG) ||
defined(INNODB_ENABLE_XAP_UNLOCK_UNMODIFIED_FOR_PRIMARY) */
static MYSQL_SYSVAR_BOOL(sec_index_trx_id_debug,
innodb_sec_index_trx_id_debug, PLUGIN_VAR_OPCMDARG,
"Testing aid: create the secondary indexes of new tables "
" in the format where the leaf page records end with DB_TRX_ID. "
"Not supported for ROW_FORMAT=REDUNDANT or COMPRESSED, temporary or "
"FULLTEXT tables; ALTER TABLE ... ADD INDEX still creates the old format",
NULL, NULL, FALSE);
static MYSQL_SYSVAR_BOOL(force_primary_key,
srv_force_primary_key,
PLUGIN_VAR_OPCMDARG,
@@ -20736,6 +20759,7 @@ static struct st_mysql_sys_var* innobase_system_variables[]= {
MYSQL_SYSVAR(enable_xap_unlock_unmodified_for_primary_debug),
#endif /* defined(UNIV_DEBUG) ||
defined(INNODB_ENABLE_XAP_UNLOCK_UNMODIFIED_FOR_PRIMARY) */
MYSQL_SYSVAR(sec_index_trx_id_debug),
MYSQL_SYSVAR(force_primary_key),
MYSQL_SYSVAR(alter_copy_bulk),
MYSQL_SYSVAR(fatal_semaphore_wait_threshold),