mirror of
https://github.com/MariaDB/server.git
synced 2025-10-30 18:36:12 +01:00
c01bff4a10
It prevents a crash in wsrep_report_error() which happened when appliers would run with FK and UK checks disabled and erroneously execute plain inserts as bulk inserts. Moreover, in release builds such a behavior could lead to deadlocks between two applier threads if a thread waiting for a table-level lock was ordered before the lock holder. In that case the lock holder would proceed to commit order and wait forever for the now-blocked other applier thread to commit before. Signed-off-by: Julius Goryavsky <julius.goryavsky@mariadb.com>
61 lines
1.4 KiB
Text
61 lines
1.4 KiB
Text
connection node_2;
|
|
connection node_1;
|
|
connection node_1;
|
|
connection node_2;
|
|
connection node_3;
|
|
connection node_1;
|
|
CREATE TABLE parent (
|
|
id INT PRIMARY KEY
|
|
) ENGINE=InnoDB;
|
|
CREATE TABLE child (
|
|
id INT PRIMARY KEY,
|
|
parent_id INT,
|
|
KEY (parent_id),
|
|
CONSTRAINT FOREIGN KEY (parent_id) REFERENCES parent(id)
|
|
) ENGINE=InnoDB;
|
|
INSERT INTO parent VALUES (1), (2);
|
|
connection node_3;
|
|
SET SESSION wsrep_on = OFF;
|
|
DELETE FROM parent WHERE id = 1;
|
|
SET SESSION wsrep_on = ON;
|
|
Restarting server 3 with one applier thread having FK and UK checks disabled
|
|
SET GLOBAL DEBUG_DBUG = 'd,sync.wsrep_after_write_row';
|
|
connection node_1;
|
|
INSERT INTO child VALUES (1, 1);
|
|
connection node_3;
|
|
SET DEBUG_SYNC = 'now WAIT_FOR sync.wsrep_after_write_row_reached';
|
|
SET GLOBAL DEBUG_DBUG = '';
|
|
SET wsrep_sync_wait = 0;
|
|
SET DEBUG_SYNC = 'ib_after_row_insert SIGNAL signal.wsrep_after_write_row';
|
|
INSERT INTO child VALUES (2, 2);
|
|
SET DEBUG_SYNC = 'RESET';
|
|
include/assert_grep.inc [no FK constraint failure]
|
|
Server 3
|
|
SELECT COUNT(*) AS EXPECT_1 FROM parent;
|
|
EXPECT_1
|
|
1
|
|
SELECT COUNT(*) AS EXPECT_2 FROM child;
|
|
EXPECT_2
|
|
2
|
|
connection node_1;
|
|
Server 1
|
|
SET wsrep_sync_wait = 15;
|
|
SELECT COUNT(*) AS EXPECT_2 FROM parent;
|
|
EXPECT_2
|
|
2
|
|
SELECT COUNT(*) AS EXPECT_2 FROM child;
|
|
EXPECT_2
|
|
2
|
|
connection node_2;
|
|
Server 2
|
|
SET wsrep_sync_wait = 15;
|
|
SELECT COUNT(*) AS EXPECT_2 FROM parent;
|
|
EXPECT_2
|
|
2
|
|
SELECT COUNT(*) AS EXPECT_2 FROM child;
|
|
EXPECT_2
|
|
2
|
|
DROP TABLE child;
|
|
DROP TABLE parent;
|
|
disconnect node_2;
|
|
disconnect node_1;
|