database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-08-08 11:22:35 +03:00
Code Activity

Merge remote-tracking branch 'github/bb-11.4-release' into bb-11.8-serg

Browse Source
This commit is contained in:
Sergei Golubchik
2025-04-27 11:33:27 +02:00
committed by Oleksandr Byelkin
parent a0b77eb806 a8d4642375
commit 237e24497b
430 changed files with 14769 additions and 6751 deletions
Download Patch File Download Diff File Expand all files Collapse all files

90
mysql-test/suite/innodb/r/lock_isolation.result
View File

@@ -1,3 +1,6 @@
connect disable_purging,localhost,root;
START TRANSACTION WITH CONSISTENT SNAPSHOT;
connection default;
#
# MDEV-26642 Weird SELECT view when a record is
# modified to the same value by two transactions
@@ -53,15 +56,17 @@ DROP TABLE t;
# MDEV-26643 Inconsistent behaviors of UPDATE under
# READ UNCOMMITTED and READ COMMITTED isolation level
#
CREATE TABLE t(a INT, b INT) ENGINE=InnoDB;
CREATE TABLE t(a INT, b INT) ENGINE=InnoDB STATS_PERSISTENT=0;
INSERT INTO t VALUES(NULL, 1), (2, 2);
SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;
BEGIN;
UPDATE t SET a = 10;
connection consistent;
SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;
SET DEBUG_SYNC="lock_wait_before_suspend SIGNAL select_blocked";
UPDATE t SET b = 20 WHERE a;
connection default;
SET DEBUG_SYNC="now WAIT_FOR select_blocked";
COMMIT;
connection consistent;
SELECT * FROM t;
@@ -75,8 +80,10 @@ BEGIN;
UPDATE t SET a = 10;
connection consistent;
SET TRANSACTION ISOLATION LEVEL READ COMMITTED;
SET DEBUG_SYNC="lock_wait_before_suspend SIGNAL select_blocked";
UPDATE t SET b = 20 WHERE a;
connection default;
SET DEBUG_SYNC="now WAIT_FOR select_blocked";
COMMIT;
connection consistent;
SELECT * FROM t;
@@ -90,8 +97,10 @@ BEGIN;
UPDATE t SET a = 10;
connection con_weird;
SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;
SET DEBUG_SYNC="lock_wait_before_suspend SIGNAL select_blocked";
UPDATE t SET b = 20 WHERE a;
connection default;
SET DEBUG_SYNC="now WAIT_FOR select_blocked";
SELECT * FROM t;
a b
10 1
@@ -114,8 +123,10 @@ UPDATE t SET b = 3;
connection consistent;
SET TRANSACTION ISOLATION LEVEL READ COMMITTED;
BEGIN;
SET DEBUG_SYNC="lock_wait_before_suspend SIGNAL select_blocked";
UPDATE t SET b = 2 WHERE a;
connection default;
SET DEBUG_SYNC="now WAIT_FOR select_blocked";
UPDATE t SET a = 1;
COMMIT;
connection consistent;
@@ -129,20 +140,25 @@ DROP TABLE t;
#
# MDEV-33802 Weird read view after ROLLBACK of other transactions
#
CREATE TABLE t(a INT PRIMARY KEY, b INT UNIQUE) ENGINE=InnoDB;
INSERT INTO t SET a=1;
BEGIN;
INSERT INTO t SET a=2;
CREATE TABLE t(a INT PRIMARY KEY, b INT UNIQUE) ENGINE=InnoDB STATS_PERSISTENT=0;
connection consistent;
START TRANSACTION WITH CONSISTENT SNAPSHOT;
connection default;
INSERT INTO t SET a=1;
connection consistent;
SAVEPOINT sp1;
SELECT * FROM t FORCE INDEX (b) FOR UPDATE;
ERROR HY000: Record has changed since last read in table 't'
SAVEPOINT sp1;
connection default;
BEGIN;
INSERT INTO t SET a=2;
connection con_weird;
START TRANSACTION WITH CONSISTENT SNAPSHOT;
SET DEBUG_SYNC="lock_wait_before_suspend SIGNAL select_blocked";
SELECT * FROM t FORCE INDEX (b) FOR UPDATE;
connection default;
SET DEBUG_SYNC="now WAIT_FOR select_blocked";
ROLLBACK;
connection con_weird;
a b
@@ -150,12 +166,74 @@ a b
SELECT * FROM t FORCE INDEX (b) FOR UPDATE;
a b
1 NULL
COMMIT;
disconnect con_weird;
connection consistent;
SELECT * FROM t FORCE INDEX (b) FOR UPDATE;
a b
1 NULL
disconnect consistent;
COMMIT;
connection default;
TRUNCATE TABLE t;
#
# MDEV-36639 innodb_snapshot_isolation=1 gives error for not comitted row changes
#
INSERT INTO t VALUES (1,1),(2,2);
connection default;
# Case 1: Transaction A modifies a record, transaction B with snapshot
# isolation level is blocked by A, then A is committed.
# Expected behaviour: B gets ER_CHECKREAD.
BEGIN;
UPDATE t SET b=3 WHERE a = 1;
connection consistent;
SET TRANSACTION ISOLATION LEVEL REPEATABLE READ;
BEGIN;
SELECT * FROM t;
a b
1 1
2 2
SET DEBUG_SYNC="lock_wait_before_suspend SIGNAL select_blocked";
SELECT * FROM t WHERE a=1 FOR UPDATE;
connection default;
SET DEBUG_SYNC="now WAIT_FOR select_blocked";
COMMIT;
connection consistent;
ERROR HY000: Record has changed since last read in table 't'
# Case 2: Transaction A modifies a record, transaction B with snapshot
# isolation level is blocked by A, then A is rolled back.
# Expected behaviour: B continues execution.
connection default;
BEGIN;
UPDATE t SET b=4 WHERE a=1;
connection consistent;
BEGIN;
SELECT * FROM t;
a b
2 2
1 3
SET DEBUG_SYNC="lock_wait_before_suspend SIGNAL select_blocked";
SELECT * FROM t WHERE a=1 FOR UPDATE;
connection default;
SET DEBUG_SYNC="now WAIT_FOR select_blocked";
ROLLBACK;
connection consistent;
a b
1 3
ROLLBACK;
# Case 3: Transaction B with snapshot isolation level started with
# consistent snapshot. Transaction A modifies a record and is committed.
# Both B tries to read modified by A record.
# Expected behavior: B gets ER_CHECKREAD.
connection consistent;
START TRANSACTION WITH CONSISTENT SNAPSHOT;
connection default;
UPDATE t SET b=4 WHERE a=1;
connection consistent;
SELECT * FROM t WHERE a=1 FOR UPDATE;
ERROR HY000: Record has changed since last read in table 't'
disconnect consistent;
disconnect disable_purging;
connection default;
SET DEBUG_SYNC="RESET";
DROP TABLE t;
# End of 10.6 tests