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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;
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connection node_1;
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connection node_1;
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connection node_2;
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connection node_3;
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connection node_1;
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CREATE TABLE parent (
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id INT PRIMARY KEY
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) ENGINE=InnoDB;
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CREATE TABLE child (
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id INT PRIMARY KEY,
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parent_id INT,
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KEY (parent_id),
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CONSTRAINT FOREIGN KEY (parent_id) REFERENCES parent(id)
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) ENGINE=InnoDB;
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INSERT INTO parent VALUES (1), (2);
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connection node_3;
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SET SESSION wsrep_on = OFF;
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DELETE FROM parent WHERE id = 1;
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SET SESSION wsrep_on = ON;
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Restarting server 3 with one applier thread having FK and UK checks disabled
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SET GLOBAL DEBUG_DBUG = 'd,sync.wsrep_after_write_row';
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connection node_1;
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INSERT INTO child VALUES (1, 1);
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connection node_3;
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SET DEBUG_SYNC = 'now WAIT_FOR sync.wsrep_after_write_row_reached';
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SET GLOBAL DEBUG_DBUG = '';
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SET wsrep_sync_wait = 0;
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SET DEBUG_SYNC = 'ib_after_row_insert SIGNAL signal.wsrep_after_write_row';
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INSERT INTO child VALUES (2, 2);
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SET DEBUG_SYNC = 'RESET';
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include/assert_grep.inc [no FK constraint failure]
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Server 3
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SELECT COUNT(*) AS EXPECT_1 FROM parent;
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EXPECT_1
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1
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SELECT COUNT(*) AS EXPECT_2 FROM child;
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EXPECT_2
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2
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connection node_1;
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Server 1
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SET wsrep_sync_wait = 15;
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SELECT COUNT(*) AS EXPECT_2 FROM parent;
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EXPECT_2
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2
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SELECT COUNT(*) AS EXPECT_2 FROM child;
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EXPECT_2
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2
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connection node_2;
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Server 2
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SET wsrep_sync_wait = 15;
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SELECT COUNT(*) AS EXPECT_2 FROM parent;
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EXPECT_2
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2
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SELECT COUNT(*) AS EXPECT_2 FROM child;
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EXPECT_2
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2
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DROP TABLE child;
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DROP TABLE parent;
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disconnect node_2;
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disconnect node_1;
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