connection node_2;
connection node_1;
connect node_1a, 127 .0 .0 .1 , root, , test, $NODE_MYPORT_1;
connection node_1;
SET SESSION wsrep_trx_fragment_size = 1 ;
CREATE TABLE t1 (f1 INTEGER PRIMARY KEY);
CREATE TABLE t2 (f1 INTEGER PRIMARY KEY);
INSERT INTO t2 VALUES (1 ),(2 ),(3 );
ALTER TABLE t2 DROP PRIMARY KEY;
INSERT INTO t2 VALUES (1 );
SET SESSION wsrep_trx_fragment_size = 1 ;
START TRANSACTION;
INSERT INTO t1 SELECT * FROM t2;
ERROR 40001 : Deadlock found when trying to get lock; try restarting transaction
SELECT * FROM t1;
f1
connection node_2;
SELECT * FROM t1;
f1
connection node_1;
DROP TABLE t1;
DROP TABLE t2;
CREATE TABLE t1 (f1 INTEGER PRIMARY KEY AUTO_INCREMENT, f2 CHAR(10 )) ENGINE=InnoDB;
connection node_1;
SET innodb_snapshot_isolation = OFF;
SET SESSION wsrep_trx_fragment_size = 1 ;
START TRANSACTION;
INSERT INTO t1 VALUES (1 , 'node1' );
connection node_1a;
INSERT INTO t1 VALUES (5 , 'node2' );
connection node_1;
INSERT INTO t1 VALUES (5 , 'node1' );
ERROR 23000 : Duplicate entry '5' for key 'PRIMARY'
SELECT * FROM t1;
f1 f2
1 node1
5 node2
SET SESSION wsrep_trx_fragment_size = 10000 ;
START TRANSACTION;
INSERT INTO t1 VALUE (10 , 'node1' );
connection node_1a;
INSERT INTO t1 VALUES(15 , 'node2' );
connection node_1;
SELECT * FROM t1;
f1 f2
1 node1
5 node2
10 node1
15 node2
INSERT INTO t1 VALUES(15 , 'node1' );
ERROR 23000 : Duplicate entry '15' for key 'PRIMARY'
COMMIT;
SELECT * FROM t1;
f1 f2
1 node1
5 node2
10 node1
15 node2
DROP TABLE t1;
Messung V0.5 in Prozent C=29 H=100 G=73
¤ Dauer der Verarbeitung: 0.8 Sekunden
(vorverarbeitet am 2026-10-08)
¤
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