mirror of
https://github.com/MariaDB/server.git
synced 2025-11-09 11:41:36 +03:00
41 lines
1.6 KiB
Plaintext
41 lines
1.6 KiB
Plaintext
SET @save_freq=@@GLOBAL.innodb_purge_rseg_truncate_frequency;
|
|
SET GLOBAL innodb_purge_rseg_truncate_frequency=1;
|
|
CREATE TABLE t (a int PRIMARY KEY, b int NOT NULL UNIQUE) engine = InnoDB;
|
|
InnoDB 0 transactions not purged
|
|
connect prevent_purge,localhost,root,,;
|
|
start transaction with consistent snapshot;
|
|
connect con_del_1,localhost,root,,;
|
|
INSERT INTO t VALUES (20,20);
|
|
SET DEBUG_SYNC = 'innodb_row_search_for_mysql_exit SIGNAL first_del_row_search_mvcc_finished WAIT_FOR first_del_cont';
|
|
DELETE FROM t WHERE b = 20;
|
|
connect con_ins_1,localhost,root,,;
|
|
SET DEBUG_SYNC = 'now WAIT_FOR first_del_row_search_mvcc_finished';
|
|
SET DEBUG_SYNC = 'lock_wait_start SIGNAL first_ins_locked';
|
|
SET DEBUG_SYNC = 'ib_after_row_insert SIGNAL first_ins_row_inserted WAIT_FOR first_ins_cont';
|
|
INSERT INTO t VALUES(10, 20);
|
|
connect con_del_2,localhost,root,,;
|
|
SET TRANSACTION ISOLATION LEVEL READ COMMITTED;
|
|
SET DEBUG_SYNC = 'now WAIT_FOR first_ins_locked';
|
|
SET DEBUG_SYNC = 'lock_wait_start SIGNAL second_del_locked';
|
|
DELETE FROM t WHERE b = 20;
|
|
connection default;
|
|
SET DEBUG_SYNC = 'now WAIT_FOR second_del_locked';
|
|
SET DEBUG_SYNC = 'now SIGNAL first_del_cont';
|
|
SET DEBUG_SYNC = 'now WAIT_FOR first_ins_row_inserted';
|
|
connection con_del_1;
|
|
connection default;
|
|
disconnect prevent_purge;
|
|
InnoDB 0 transactions not purged
|
|
SET DEBUG_SYNC = 'now SIGNAL first_ins_cont';
|
|
connection con_del_2;
|
|
connection con_ins_1;
|
|
connection default;
|
|
INSERT INTO t VALUES(30, 20);
|
|
disconnect con_ins_1;
|
|
disconnect con_del_1;
|
|
disconnect con_del_2;
|
|
connection default;
|
|
SET DEBUG_SYNC = 'RESET';
|
|
DROP TABLE t;
|
|
SET GLOBAL innodb_purge_rseg_truncate_frequency=@save_freq;
|