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d20a96f9c1
In MariaDB, we have a confusing problem where: * The transaction_isolation option can be set in a configuration file, but it cannot be set dynamically. * The tx_isolation system variable can be set dynamically, but it cannot be set in a configuration file. Therefore, we have two different names for the same thing in different contexts. This is needlessly confusing, and it complicates the documentation. The same thing applys for transaction_read_only. MySQL 5.7 solved this problem by making them into system variables. https://dev.mysql.com/doc/relnotes/mysql/5.7/en/news-5-7-20.html This commit takes a similar approach by adding new system variables and marking the original ones as deprecated. This commit also resolves some legacy problems related to SET STATEMENT and transaction_isolation.
93 lines
2.1 KiB
Text
93 lines
2.1 KiB
Text
include/rpl_init.inc [topology=1->2]
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connection server_1;
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ALTER TABLE mysql.gtid_slave_pos ENGINE=InnoDB;
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CREATE TABLE t1 (a int PRIMARY KEY, b INT) ENGINE=InnoDB;
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CREATE TABLE t2 (a int PRIMARY KEY, b INT) ENGINE=InnoDB;
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INSERT INTO t1 VALUES (1,0), (2,0), (3,0);
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INSERT INTO t2 VALUES (1,0), (2,0);
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connection server_2;
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SET @old_isolation= @@GLOBAL.transaction_isolation;
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SET @old_parallel_threads=@@GLOBAL.slave_parallel_threads;
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include/stop_slave.inc
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SET GLOBAL TRANSACTION ISOLATION LEVEL READ COMMITTED;
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SET GLOBAL slave_parallel_threads=10;
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CHANGE MASTER TO master_use_gtid=slave_pos;
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SET @old_parallel_mode=@@GLOBAL.slave_parallel_mode;
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SET GLOBAL slave_parallel_mode='aggressive';
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*** Test that we replicate correctly when using READ COMMITTED and --log-slave-updates=0 on the slave ***
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connection server_1;
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INSERT INTO t1 SELECT 4, COUNT(*) FROM t2;
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INSERT INTO t2 SELECT 4, COUNT(*) FROM t1;
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INSERT INTO t1 SELECT 5, COUNT(*) FROM t2;
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INSERT INTO t2 SELECT 5, COUNT(*) FROM t1;
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INSERT INTO t2 SELECT 6, COUNT(*) FROM t1;
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INSERT INTO t1 SELECT 6, COUNT(*) FROM t2;
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INSERT INTO t1 SELECT 7, COUNT(*) FROM t2;
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INSERT INTO t2 SELECT 7, COUNT(*) FROM t1;
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INSERT INTO t2 SELECT 8, COUNT(*) FROM t1;
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INSERT INTO t1 SELECT 8, COUNT(*) FROM t2;
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INSERT INTO t2 SELECT 9, COUNT(*) FROM t1;
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INSERT INTO t1 SELECT 9, COUNT(*) FROM t2;
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INSERT INTO t1 SELECT 10, COUNT(*) FROM t2;
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INSERT INTO t2 SELECT 10, COUNT(*) FROM t1;
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SELECT * FROM t1 ORDER BY a;
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a b
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1 0
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2 0
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3 0
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4 2
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5 3
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6 5
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7 5
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8 7
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9 8
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10 8
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SELECT * FROM t2 ORDER BY a;
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a b
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1 0
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2 0
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4 4
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5 5
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6 5
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7 7
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8 7
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9 8
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10 10
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include/save_master_gtid.inc
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connection server_2;
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include/start_slave.inc
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include/sync_with_master_gtid.inc
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SELECT * FROM t1 ORDER BY a;
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a b
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1 0
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2 0
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3 0
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4 2
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5 3
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6 5
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7 5
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8 7
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9 8
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10 8
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SELECT * FROM t2 ORDER BY a;
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a b
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1 0
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2 0
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4 4
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5 5
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6 5
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7 7
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8 7
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9 8
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10 10
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connection server_2;
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include/stop_slave.inc
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SET GLOBAL transaction_isolation= @old_isolation;
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SET GLOBAL slave_parallel_mode=@old_parallel_mode;
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SET GLOBAL slave_parallel_threads=@old_parallel_threads;
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include/start_slave.inc
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connection server_1;
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DROP TABLE t1, t2;
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connection server_2;
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call mtr.add_suppression("Deadlock found when trying to get lock.*");
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include/rpl_end.inc
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